The theoretical predictions of the converging inflow, or Bulk-Motion Comptonization model are discussed and some predictions are compared to X- and gamma-ray observations of the high-soft state of Galactic black hole candidate XTE J1550+564. The approx. 1...

We present the INTEGRAL and RXTE X-ray observations of XTE J1550-564, a Galactic microquasar and a black hole candidate, during its outburst in the spring of 2003. The source during the outburst was in a canonical hard state, and its spectrum remained constant in both the rise and decay phases.

... Subject Category: BH AND NS BINARIES Abstract: We have discovered X-ray emission from the superluminal jet of the Galactic black hole XTE J1550-564. ...

We present results of a broadband spectroscopy of the galactic microquasars and black hole candidates XTE J1550-564 and GRO J1655-40, performed with the INTEGRAL and RXTE observatories during strong outbursts in 2003 and 2005, respectively. The spectral parameters evolution was traced during brightening and fading phases of each ...

The microquasar XTE J1550-564 produced the very first X-ray jets to be observed from a black-hole X-ray binary. Chandra imaging data obtained for these jets during 2000-2003 offer a near-unique opportunity to test whether the black hole's spin axis is tilted or aligned with respect to the plane of the binary orbit. To this end, we ...

[abridged] The black hole X-ray binary XTE J1550-564 was monitored extensively at X-ray, optical and infrared wavelengths throughout its outburst in 2000. We show that it is possible to separate the optical/near-infrared (OIR) jet emission from the OIR disc emission. Focussing on the jet component, we find that as the source fades in ...

The black hole X-ray binary XTE J1550-564 was monitored extensively at X-ray, optical and infrared wavelengths throughout its outburst in 2000. We show that it is possible to separate the optical/near-infrared (OIR) jet emission from the OIR disc emission. Focussing on the jet component, we find that as the source fades in the X-ray ...

The physical mechanisms responsible for production of the non-thermal emission in accreting black holes should be imprinted in the observational appearances of the power law tails in the X-ray spectra from these objects. Variety of spectral states observe...

We present an analysis of the high-frequency timing properties of the April-May 2000 outburst of the

Society. All rights reserved. Printed in U.S.A. THE 1998 OUTBURST OF XTE J1550[564: A MODEL BASED 13 ABSTRACT The 1998 September outburst of the black hole X-ray binary XTE J1550[564 was monitored at X-ray, optical, and radio wavelengths. We divide the outburst sequence ...

The coincidence excess between the gravitational wave detectors EXPLORER and NAUTILUS observed in the ten-day period 7-17 September 1998 is the largest ever observed. The event occurred mainly at the sidereal hour 4, when the detectors axes were perpendicular to the Galactic disk. This excess occurred during a period of intense activity of the black hole candidate XTE ...

An unusual timing and spectral state of a black hole microquasar XTE J1550-564 observed with RXTE is analyzed. Millisecond variabilities are found, which are significantly shorter than the minimum possible time scale in the light curves of black hole binaries, as suggested by Sunyaev & Revnivtsev (2000). The X-ray spectral fitting ...

Although relativistic jets are present in AGN, Galactic compact objects (called microquasars) and probably gamma-ray bursts, their production and basic properties are not well-understood. Using Chandra, we have discovered extended X-ray jet emission from the black hole X-ray transient and microquasar XTE J1550-564. Based on the ...

We have detected, at x-ray and radio wavelengths, large-scale moving jets from the microquasar XTE J1550-564. Plasma ejected from near the black hole traveled at relativistic velocities for at least 4 years. We present direct evidence for gradual deceleration in a relativistic jet. The broadband spectrum of the jets is consistent with ...

The well known black-hole X-ray binary transient XTE 31 550-564 underwent an outburst during the spring of 2003 which was substantially underluminous in comparison to previous periods of peak activity in that source. In addition, our analysis shows that i...

We report optical, infrared, and X-ray light curves for the outburst, in 2000, of the black hole candidate XTE J1550-564. We find that the start of the outburst in the H and V bands precedes that seen in the Rossi X-Ray Timing Explorer All-Sky Monitor by 11.5+/-0.9 and 8.8+/-0.6 days, respectively; a similar delay has been observed in ...

freq. (Hz) d 0 5 10 15 20 MJD 51680 (days) 0.01 0.1 1. 10. QPO frequency (Hz) e FIGURE 3: The evoultion

We investigated the reported distances of Galactic black hole (BH) and neutron star low-mass X-ray binaries (LMXBs). Comparing the distances derived for the neutron stars Cyg X-2 and XTE J2123-058 using the observed Eddington limited photospheric radius expansion bursts with the distances derived using the observed radius and effective temperature of the companion star we find ...

We report on timing and spectral observations of the 2000 outburst of XTE J1550--564 made by the Unconventional Stellar Aspect (USA) Experiment on board the Advanced Research and Global Observation Satellite (ARGOS). We observe a low-frequency quasi-periodic oscillation (LFQPO) with a centroid frequency that tends to increase with ...

I will report on a detailed analysis of RXTE data from the galactic black hole candidate XTE J1550-564 during rising phase of the 1998 outburst. Specific focus is made on the behavior of the time lags and their correlation with other properties observed in X-ray and radio wavelengths. The main result of the presented study is a strong ...

We revisit the discovery outburst of the X-ray transient XTE J1550-564 during which relativistic jets were observed in 1998 September, and review the radio images obtained with the Australian Long Baseline Array, and light curves obtained with the Molonglo Observatory Synthesis Telescope and the Australia Telescope Compact Array. Based ...

We investigate the accretion disk geometry in one of the Galactic black hole source: XTE J1550-564, by measuring the time delay between soft (2-5 keV) and hard (20-50 keV) X-ray emissions. We have also found model independent pivoting pattern along with change in the centroid frequency of the respective QPOs in a single observation. We ...

We have considered, in the past two years, coincidences between the gravitational wave detector NAUTILUS and EXPLORER in order to study fluxes of projectiles or Gravitational Waves, produced by a limited numbers of cosmic source. We use coincidences between the two distant detectors as a good tool in order to minimize local noise and we have chosen a coincidence time acceptance window of +/-5 s ...

For the first time, astronomers have tracked the life cycle of X-ray jets from a black hole. A series of images from NASA's Chandra X-ray Observatory has revealed that as the jets evolved, they traveled at near light speed for several years before slowing down and fading. "Watching these jets slow down and disappear is like watching a time-lapse movie of the rise and fall of the Bronze Age," said ...

We investigated the reported distances of Galactic black hole (BH) and neutron star low-mass X-ray binaries (LMXBs). Comparing the distances derived for the neutron stars Cyg X-2 and XTE J2123-058 using the observed Eddington limited photospheric radius expansion bursts with the distances derived using the observed radius and effective temperature of the companion star, we ...

Low Mass X-ray Binaries (LMXBs) with either a black hole or a neutron star show power spectra characterised by Quasi Periodic Oscillations (QPOs). Twin peak high frequency QPOs are characterised by frequencies that are typical for matter orbiting within 10 rg from the compact object. We consider clumps of material orbiting a Schwarzschild black hole, that are deformed by tidal interaction. We ...

We report on the spectral analysis of RXTE and INTEGRAL data of the 2005 April outburst of the transient Atoll source Aql X-1. Although this outburst is one of the faintest ever detected for this source in the soft X-rays (RXTE/ASM), one of our INTEGRAL observations, taken close to the soft X-ray peak, shows that the source flux was quite high, with a 20-200 keV flux of 2.05 x 10^-9 erg cm^-2 ...

Soft X-ray transients (SXTs), a sub-class of low-mass X-ray binaries (LMXBs), provide a unique opportunity to test General Relativity and to probe fundamental physics under conditions terrestrially unattainable. SXT outbursts are of great interest because they allow the study of LMXBs under a wide range of accretion rates. The majority of known SXTs contain black holes, therefore SXT outbursts are ...

We measure the spin of XTE J1550-564 using the two leading methods: (i) modelling the thermal continuum spectrum of the accretion disc; and (ii) modelling the broad red wing of the reflection fluorescence Fe K? line. We find that these two independent measurements of spin are in agreement. For the continuum-fitting analysis, we use a ...

We measure the spin of XTE J1550-564 using the two leading methods: (i) modelling the thermal continuum spectrum of the accretion disc; and (ii) modelling the broad red wing of the reflection fluorescence Fe K? line. We find that these two independent measurements of spin are in agreement. For the continuum-fitting analysis, we use a ...

The physical mechanisms responsible for the production of non-thermal emission in accreting black holes (BHs) should be imprinted in the observational appearances of the power-law tails in the X-ray spectra from these objects. Phenomenology of different spectral states exhibited by galactic BH binaries allows us to establish the physics of the photon upscattering under different accretion regimes. ...

It is now established that thermal disc emission and non-thermal jet emission can both play a role at optical/infrared (OIR) wavelengths in X-ray transients. The spectra of the jet and disc components differ, as do their dependence on mass accretion properties. Here we demonstrate that the OIR colour-magnitude diagrams (CMDs) of the evolution of the X-ray transient XTE ...

It is now established that thermal disc emission and non-thermal jet emission can both play a role at optical/infrared (OIR) wavelengths in X-ray transients. The spectra of the jet and disc components differ, as do their dependence on mass accretion properties. Here we demonstrate that the OIR colour-magnitude diagrams (CMDs) of the evolution of the X-ray transient XTE ...

RXTE studies of X-ray novae have revealed distinctive effects that almost certainly originate in the near vicinity of a black hole, such as fast QPOs in the inner disk regions of several systems. In a further search for measurements of relativistic effects, we propose an aggressive campaign of X-ray observations of the next non-pulsing X-ray nova that rises above 1 Crab at 2-12 keV. We further ...

We present our analysis of archival X-ray timing data on four galactic compact objects known to exhibit a variety quasi-periodic oscillations. A time-domain approach, utilizing Autocorrelation Functions (ACFs), as opposed to conventional frequency-domain analyses, is pursued to search for possible fresh insights into the long-standing and unsolved QPO problem. We find three distinct cases in the ...

Events in eleven X-ray transient observed in detail by the RXTE produced radio counterparts. This includes four Galactic superluminal sources or microquasars: GRS 1915+105, which had many events between 1996 and 2000; the 1996-1997 event in GRO J1655-40; XTE J1748-288, the first Galactic superluminal discovered by RXTE in 1998; and the Sep. 14-16 events in V4641 Sgr ...

The standard spectral model for analyzing the soft component of thermal emission from a thin accretion disk around a black hole is the multi-temperature blackbody (MTB) model. The widely used implementation of this model, which is known as ``diskbb,'' assumes nonzero torque at the inner edge of the accretion disk. This assumption is contrary to the classic and current literature on thin-disk ...

All prior work on measuring the spins of stellar-mass black holes (BHs) via the X-ray continuum-fitting (CF) method has relied on the use of weakly Comptonized spectra obtained in the thermal dominant (TD) state. Using a self-consistent Comptonization model, we show that one can analyze spectra that exhibit strong power-law components and obtain values of the inner disk radius, and hence spin, ...

All prior work on measuring the spins of stellar-mass black holes (BHs) via the X-ray continuum-fitting (CF) method has relied on the use of weakly Comptonized spectra obtained in the thermal dominant (TD) state. Using a self-consistent Comptonization model, we show that one can analyze spectra that exhibit strong power-law components and obtain values of the inner disk radius, and hence spin, ...

Most accretion-powered relativistic jet sources in our Galaxy are transient X-ray binaries (XBs). Efforts to coordinate multiwavelength observations of these objects have improved dramatically over the last decade. Now the challenge is to interpret broadband spectral energy distributions (SEDs) of XBs that are well sampled in both wavelength and time. Here we focus on the evolution of the jet in ...

GRS 1915+105 is a galactic source known for its superluminal jet ejections. There have been recurrent radio flares in which the radio jets have been resolved. There have also been many observations of infrared and radio flux oscillations with the same time scale as cyclic X-ray variations. Simultaneous observations have been possible and approximately identify the point in the X-ray cycle where a ...

We present a study of the correlations between spectral, timing properties and mass accretion rate observed in X-rays from the eight Galactic Black Hole (BH) binaries during the transition between hard and soft states. We analyze all transition episodes from X-ray sources observed with Rossi X-ray Timing Explorer (RXTE). We show that broad-band energy spectra of Galactic sources during all these ...

Context. Motivated by the recent proposal that one can obtain quasi-periodic oscillations (QPOs) by photon echoes manifesting as non-trivial features in the autocorrelation function (ACF), we study the ACFs of the light curves of three accreting black hole candidates and a neutron star already known to exhibit QPOs namely, GRS 1915+105, XTE ...

We present an improved dynamical model of the X-ray binary and microquasar XTE J1550-564 based on new moderate-resolution optical spectroscopy and near-infrared photometry obtained with the 6.5 m Magellan Telescopes at Las Campanas Observatory. Twelve spectra of the source were obtained using the Magellan Echellette Spectrograph ...

Apr 6, 2011 ... "In April 2000, J1550-564 was nearly as bright as the Crab Nebula, which is the brightest hard x-ray source in the entire sky," says Dr. Mike ...

The 2003 X-ray outburst of the candidate black hole binary, H1743-322, was investigated in frequent pointed observations (2-250 keV) with the Rossi X-Ray Timing Explorer (RXTE). One particular program of 130 observations is organized into 111 time intervals and searched for the presence of high-frequency quasi-periodic oscillations (HFQPOs) in the range 50-2000 Hz. Only a single observation (2003 ...

We have analyzed Rossi X-Ray Timing Explorer pointed observations of the outbursts of black hole and neutron star soft X-ray transients in which an initial low/hard state, or ``island'' state, followed by a transition to a softer state was observed. In three sources-the black hole transient XTE J1550-564, the neutron star transient ...

The goal of this investigation is to further our understanding of the dynamics of secreting neutron stars and black holes in the hope of using these systems as probes of the physics of strong gravitational fetus. The main focus of this work has been a multi-year program of simultaneous millisecond X-ray timing and spectral observations carried out with the Rossi X-Ray Timing Explorer (RXTE) to ...

Context. Microquasars are accreting Galactic sources that are also observed to launch relativistic jets. A key signature of the ejection is non-thermal radio emission. The level of this jet component at high frequencies is still poorly constrained. Aims: The X-ray binary and microquasar black hole candidate XTEJ1550-564 exhibited a faint X-ray outburst in April 2003 during which it stayed in the ...

We use a ray-tracing technique to compute the observed spectrum of a thin accretion disk around a Kerr black hole. We include all relativistic effects such as frame-dragging, Doppler boost, gravitational redshift, and bending of light by the gravity of the black hole. We also include self-irradiation of the disk as a result of light deflection. Assuming that the disk emission is locally blackbody, ...

We report on the discovery of X-ray quasi-periodic oscillations (QPOs) at frequencies of 3-4 mHz from a transient ultraluminous X-ray source X42.3+59 in M82. The QPOs are strong and broad and appear with weak or absent red noise, and are detected only in Chandra observations when the source is brighter than 1040 erg s-1. The QPO behavior is similar to the type A-I QPOs found in ...

My group, in close collaboration with Dr. Zhang's group at University of Alabama-Huntsville, have been systematically analyzing and re-analyzing a substantial amount of archival data from previous and ongoing X-ray missions, in order to study possible relativistic effects around stellar-mass black holes and neutron stars. Our effort has been focused primarily on the data from the Rossi X-ray ...

We consider the dependence of the viewing angle in supercritical accretion flows and discuss the observational implications of galactic black-hole candidates and ultraluminous X-ray sources. Model spectra of supercritical accretion flows strongly depend on the inclination angle. For example, the maximum temperature of the supercritical disk (the accretion rate and the black-hole mass are dot{M} = ...

The X-ray spectra of Galactic binary systems dominated by a quasi-thermal component (disc dominated or high/soft state) are well described by a standard Shakura-Sunyaev disc structure down to the last stable orbit around the black hole. This is not the case in the very high (or steep power-law) state, where the X-ray spectra show both a strong disc component and strong, steep tail to higher ...

The power spectra of black hole binaries have been well studied for decades, giving a very detailed phenomenological picture of the variability properties and their correlation with the energy spectrum (spectral state) of the source. Here we take the truncated disc/hot inner flow picture which can describe the spectral changes, and show that propagating mass accretion rate fluctuations in the hot ...

Low mass X-ray binaries (LMXBs) are interacting systems in which a neutron star or black hole accretes material from a donor star via an accretion disk. LMXBs provide excellent environments for studying the evolution of compact objects, disk accretion dynamics, and physics in the strong gravity regime, but this work is hampered by the limited information on key parameters such as the masses of the ...

The newly discovered AM Her AXJ2315-592 is unique in exhibiting complex absorption through most of its orbital period. This absorption presumably ocurrs in the accretion flow immediately after it has been threaded by the magnetic field and lifted out of the orbital plane. This source presents an excellent opportunity to make a detailed study of the accretion flow and hence of the magnetic ...

The Galactic black hole candidate XTE J1752-223 was observed during the decay of its 2009 outburst with the Suzaku and XMM-Newton observatories. The observed spectra are consistent with the source being in the �intermediate� and �low-hard� states, respectively. The presence of a strong, relativistic iron emission line is clearly detected in both observations and the ...

The X-ray transient XTE J1719-291 was discovered with Rossi X-ray Timing Explorer/Proportional Counter Array (RXTE/PCA) during its outburst in 2008 March, which lasted at least 46 d. Its 2-10 keV peak luminosity is 7 � 1035 erg s-1 assuming a distance of 8 kpc, which classifies the system as a very faint X-ray transient. The outburst was monitored with Swift, RXTE, Chandra ...

Planned XTE observations of Eta Carinae from Long Term Timeline. last update: 01 -31-96 ... Observation ID = XTE observation ID. ...

RXTE PCA Monitoring Observations of: XTE J1824-141 ... XTE J1824-141 Light Curve . Source Light Curve: ASCII table | FITS table | Postscript light curve ...

RXTE PCA Monitoring Observations of: XTE J1819-254 ... XTE J1819-254 Light Curve . Source Light Curve: ASCII table | FITS table | Postscript light curve ...

RXTE PCA Monitoring Observations of: XTE J1818-245 ... XTE J1818-245 Light Curve . Source Light Curve: ASCII table | FITS table | Postscript light curve ...

RXTE PCA Monitoring Observations of: XTE J1752-223 ... XTE J1752-223 Light Curve . Source Light Curve: ASCII table | FITS table | Postscript light curve ...

Apr 21, 1995 ... Breaking News ---------------- Q. How do I find out the very latest information about XTE; the availability of matrices, ...

Feb 10, 1995 ... XTE NRA released by NASA HQ ---------------------------------------------------- -------------- XTENEWS#2 10th February 1995 NASA ...

Jul 18, 2002 ... XTELTSCHED: XTE Long-Term Schedule Information ... obsid The unique ID of scheduled observation. prnb The proposal number. target_name The ...

Jul 7, 2008 ... The XTECOI table provides a complete, accurate, and easily accessible list of information about the XTE proposal co-investigators (coi). ...

Oct 21, 1998 ... The ABC of XTE. Data Files. Introduction. FITS Files. Science Array Files. Science Event Files. Filter Files ...

XTE X-ray Observations of Eta Carinae. Most Recent XTE lightcurve . Created using Craig Markwardt's updated PCU background models. ...

XTE TOO OBSERVATIONS OF THE ETA CAR "FLARE". Preliminary TOO Lightcurve. This represents the gross lightcurve corrected for background using PCABACKEST ...

We report the discovery of a new X-ray pulsar, XTE J1810-197, that was serendipitously discovered on

The observations made using Rossi XTE offer scientists a new window on the ... The first detection of the remarkable fluctuations by Rossi XTE was made in ...

Updated values are sent to the EDS and applied to data in all configurations except the following: ...

UV spectra of the magnetic accretor AO Psc show absorption features for half the binary orbit. The absorption is unlike the wind-formed features often seen in similar stars. Instead, we attribute it to a fraction of the stream that overflows the impact with the accretion disk. Rapid velocity variations can be explained by changes in the trajectory of the stream depending on ...

Thermonuclear bursts in LMXBs accreting pure helium are sensitive to the thermal proceses in the NS interiors, as the heat for burst ignition must come entirely from the pycnonuclear reactions in the crust. But for a small number of observed He-accretors, the measured burst recurrence times are significantly shorter than predicted and cannot be reconciled with any current ...

XTE J1946+274 = GRO J1944+26 is a 15.8-s Be/X-ray pulsar discovered simultaneously in 1998 September

XTE J1946+274 = GRO J1944+26 is a 15.8 s Be/X-ray pulsar discovered simultaneously in 1998 September

RXTE PCA Monitoring Observations of: XTE J1829-098. Coordinates: 277.4333, - 9.8563 (J2000). Source Page: Top | Light Curve Plot | Light Curve Data | Return ...

RXTE PCA Monitoring Observations of: XTE J1748-288. Coordinates: 267.0210, - 28.4740 (J2000). Source Page: Top | Light Curve Plot | Light Curve Data | Return ...

RXTE PCA Monitoring Observations of: XTE J1739-285. Coordinates: 264.9790, - 28.4826 (J2000). Source Page: Top | Light Curve Plot | Light Curve Data | Return ...

RXTE PCA Monitoring Observations of: XTE J1737-376. Coordinates: 264.4950, - 37.7721 (J2000). Source Page: Top | Light Curve Plot | Light Curve Data | Return ...

Dashed lines show average rate (and +/- 1 sigma standard deviation) for this source (derived from this plot) XTEJ1859p226 XTE J1859+226.

Dashed lines show average rate (and +/- 1 sigma standard deviation) for this source (derived from this plot) XTEJ1818-245 XTE J1818-245.

Dashed lines show average rate (and +/- 1 sigma standard deviation) for this source (derived from this plot) XTEJ1810-197 XTE J1810-197.

Dashed lines show average rate (and +/- 1 sigma standard deviation) for this source (derived from this plot) XTEJ1810-189 XTE J1810-189.

Dashed lines show average rate (and +/- 1 sigma standard deviation) for this source (derived from this plot) XTEJ1739-285 XTE J1739-285.

Jun 19, 1998 ... setenv XFDB /blah/blah/FD. giving the full path to the top of your XTE ... setenv XFDB /blah/blah/FD. 3. Go into the Day0000 directory, ...

Sep 16, 1999 ... An XTE filter file contains most of the housekeeping data deemed useful ... an FMI file and a sub-directory for each ObsId (e.g., subdirectories: ...

Reconstruct a proposal level FMI from obsid level FMIs recofmi /data/xte/P00013 NOTES: BUGS Please report problems to xtehelp@athena.gsfc.nasa.gov. ...

May 2, 2008 ... You can find them at: http://rxte.gsfc.nasa.gov/docs/xte/whatsnew/xte_phds.html If you know of a thesis we're missing, send it to the ...

Jun 10, 1999 ... 1998: "XTE J0421+560 and CI Camelopardalis", IAUC 6857, F.E. Marshall, T.E. Strohmayer (1998). 1998: "XTE J1858+034", IAUC 6828, ...

Sep 8, 2005 ... 1998: "XTE J0421+560 and CI Camelopardalis", IAUC 6857, F.E. Marshall, T.E. Strohmayer (1998). 1998: "XTE J1858+034", IAUC 6828, F.E. ...

The X-ray transient XTE J1908+094 was serendipitously discovered during RXTE ToO observations of SGR

Index of /docs/xte/abc. Icon Name Last modified Size Description. [DIR] Parent Directory - [TXT] abc_footer.html 19-Jun-1998 17:59 449 [TXT] ...

to-soft state transition indicates a mass of the BH in XTE J1752-223 between 8 ... J1752-223 during its recent October 2009 - May 2010 outburst. ...

There was a typo in the declination of XTE J1752-233 as reported in ATel. 2438. The correct coordinates are RA 17 52 15.064, Dec.-22 20 31.982

When quaternions are not available for a desired time, the rate is also given a ... This may be either the XTE FILTER file, or the quaternion file (FH0e. ...

In general, GTI files are created with the ftool maketime which applies Boolean and/or arithmetic selection criteria to the ...

Evidence for the Unified Model of Seyfert I and II Galaxies ... characteristic variability time scales, and establish a unified model of AGN ...

Because the RDF formats are designed to be flexible, ... Currently, data from EINSTEIN, ASCA, CGRO and XTE are being or will be archived in the RDF format. ...

in Gleditsia triacanthos, Schnabel et al. (1998) reduced the number of parameters esti- mated by treating

Preferential etching by mixture of nitric and hydrochloric acids reveals crystal dislocation defects

EUVE, ASCA, and XTE observed the eclipsing binary Algol (Beta Per) from 1-7 Feb. 96. The coordinated observation covered approximately 2 binary orbits of the system, with a net exposure of approximately 160 ksec for EUVE, 40 ksec for ASCA (in 4 pointing), and 90 ksec for XTE (in 45 pointings). We discuss results of modeling the combined EUVE, ASCA, and ...

EUVE, Advanced Satellite for Cosmology and Astrophysics (ASCA), and X-ray Timing Explorer (XTE) observed the eclipsing binary Algol (Beta Per) from 1-7 Feb 1996. The coordinated observation covered approx. 2 binary orbits of the system, with a net exposure of approx. 160 ksec for EUVE, 40 ksec for ASCA (in 4 pointings), and 90 ksec for XTE (in 45 ...

Jan 12, 1996 ... The revision is due to the request to shift Algol into the early February span to get better coordination with EUVE and XTE. ...

Two Intermediate Mars were observed with XTE (X-Ray Timing Explorer): PQ Gem and AO Psc. A very preliminary analysis for PQ Gem was presented at the Annapolis Workshop on Magnetic Cataclysmic Variables. At about the same time, the XTE team created a new background estimator for faint sources. The PQ Gem data must be reanalyzed using the new background ...

We propose a coordinated XTE observation of the prototypical eclipsing binary Algol in conjunction with an already approved EUVE observation. Observing the X-ray spectrum of Algol with XTE,EUVE, and hopefully ASCA will provide critical, near-simultaneous constraints on the distribution of the hottest temperature plasma in the Algol system: this is required ...

We consider the interaction between a binary system (e.g. two supermassive black holes or two stars) and an external accretion disc with misaligned angular momentum. This situation occurs in galaxy merger events involving supermassive black holes, and in the formation of stellar mass binaries in star clusters. We work out the gravitational torque between the binary and disc, and show that their ...

We provide a comprehensive description of the long-term (secular) orbital evolution of eccentric interacting binary systems. Using a description for the position of the L1 point and the size of the Roche lobe in an asynchronous eccentric binary system, we determine the orbtial trajectory of a particle ejected from periastron in the ballistic limit. We provide a method for determining a priori the ...

2D modeling of gas flow structure in a binary system using the modified model on a fine grid has been carried out for the parameters of the classical symbiotic star Z And. The calculations have confirmed the mechanism of quiescent to active state change as a consequence of the transition from the disk accretion to the accretion from the flow proposed in our previous works. The simulations of the ...

We have developed a three-dimensional numerical model and applied it to simulate plasma flows in semi-detached binary systems whose accretor possesses a strong intrinsic magnetic field. The model is based on the assumption that the plasma dynamics are determined by the slow mean flow, which forms a backdrop for the rapid propagation of MHD waves. The equations describing the ...

The appearance of transient behaviour in a low-mass X-ray binary places very strong constraints on the system. These are most easily satisfied if the accretor is a black hole, as in this case the system cannot easily attain a persistent state in which the central accretor keeps the accretion disc ionized and therefore stable by irradiating it. In contrast, ...

Abstract. The accretion process onto a magnetized isolated neutron star, which captures material from the interstellar medium, is discussed. The evolutionary track of such a star can be presented as a sequence of four states: ejector, supersonic propeller, subsonic propeller, andsteady accretor. Ishowthatsubsonic propeller ? accretor transition does not ...

The INTEGRAL satellite extensively observed XTE J1817-330 and XTE J1818-245 which underwent X-ray outbursts from, respectively, Jan. 2006 and Feb. 2005 to Nov. 2006, during the INTEGRAL Core Program and Target of Opportunity observations, dedicated to new X-ray novae, and during Galactic Bulge observations. We report some results of simultaneous ...

This paper describes the thermal design and flight results of the X-Ray Timing Explorer (XTE) deployable mechanisms. The two subsystems discussed are the SADA and the APS gimbal. The SADA (Solar Array Drive Assembly) is the mechanism that maneuvers the solar arrays during flight operation and the APS gimbal (Antenna Pointing System gimbal) is the mechanism that maneuvers the ...

#480) --- X�rays: stars 1. INTRODUCTION The X�ray nova XTE J1118#480 was discovered with the Rossi X Society. All rights reserved. Printed in U.S.A. A BLACK HOLE GREATER THAN 6 M, IN THE X�RAY NOVA XTE J1118 of the quiescent X�ray nova XTE J1118#480 with the new 6.5 m Multiple Mirror Telescope have revealed

In this Letter we present a new analysis of the torques acting on the accreting millisecond X-ray pulsars SAX J1808.4-3658 and XTE J1814-338, and show how our results can be used to constrain theoretical models of the spin evolution. In particular, we find upper limits on any spin-up/down phase of XTE J1814-338 of |\\dot{\

The InxSb40-xTe60 alloy was selected as a new alternative phase change material for Ge2Sb2Te5 (GST) for phase change random access memory (PRAM). The crystal structure of InxSb40-xTe60 was an ?(Sb2Te3) rhombohedral (a=b=c, ?=?=? \

With reference to the RXTE discovery of XTE J1824-141, a new intermittent 120 sec pulsar (Atel 1679), we note that the unidentified INTEGRAL source IGR J18246-1425 belonging to the 3rd IBIS Survey Catalogue (Bird et al. 2007, ApJS, 170, 175) is at a distance of 18 arcmin well within the 30 arcmin PCA error box. The IBIS source position is (RA,Dec) =276.161, -14.418 (J2000) ...

... keywords in XTE Science Event files. edsgcor - Converts the PCA/EDS Gain ... pcabackest - Creates an estimated PCA background spectrum for a specific ...

Aug 15, 2011 ... It includes science data from the PCA Standard and HEXTE Archive modes, and the complete set of housekeeping, attitude, and orbit data ...

Aug 19, 2011... is defined as a period during which the RXTE elevation angle is less than 0 ... belongs, according to the following RXTE classification system: ...

5 1998 PCU 4/5 TSM: It was discovered that the onboard automatic procedures that turn off PCUs 4 and 5 when possible breakdowns occur were not fully ...

202, From outburst to quiescence: the decay of the transient AXP XTE J1810- ...... Haines, C. P.; Merluzzi, P.; Mercurio, A.; Gargiulo, A.; Krusanova, N.; ...

to a precision of ~ 10% of the pulse period once every satellite orbit. ... electronics, low- and high-voltage power converters, a coarse ...

Jul 24, 1997 ... The name of the configuration provides a summary of the properties of the ... The configuration name does not, however, give a complete ...

Sep 16, 1999 ... Events that survive rise-time rejection pass through - or not, as the case may be - the lower and upper pulse-height discriminators and ...

Sep 14, 1999 ... HEXTE Configurations: Histogram Bin. Return, if you like, to the HEXTE Issues chapter or to the Table of Contents. ...

Sep 14, 1999... that is, the NaI-only events that survive background rejection and pass through the pulse-height and pulse-shape discriminators, ...

Jul 24, 1997 ... you want only a spectrum. Type of binning for LIGHTCURVE: This option determines how the binned values in light ...

Sep 14, 1999 ... Spillage is used to flag instances when the EDS received more events than it could process and more than zero events were dropped. ...

Sep 14, 1999 ... EDS Configurations: Transparent. The Transparent configurations use three Event Analyzers simultaneously to provide detailed spectral and ...

Sep 14, 1999 ... Gain and offset corrections are not applied by the EDS to Standard-2 data. ... as well as a coda of keywords summarizing EDS status. ...

Sep 14, 1999 ... EDS Configurations: Standard-1. Packaging of science data; Time and energy resolution; Reduction requirements and options; Gain and offset ...

Sep 14, 1999 ... EDS Configurations: Good Xenon Burst Catcher. A description of the Good Xenon Burst Catcher configurations will appear here later. ...

Sep 14, 1999 ... EDS Configurations: Good Xenon. General Description; Detailed Description; Time and energy resolution; Reduction requirements and options ...

Sep 14, 1999... mm: - the lower bound of the upper channel; hhh: - the upper bound of the upper channel; rr: - the readout time (either 16 s or 64 s) ...

Sep 14, 1999 ... Gain and offset corrections are applied by the EDS to generic Binned data. ... as well as a coda of keywords summarizing EDS status. ...

Nov 5, 2007 ... Also written in DDL, the TDDES2 keyword describes which events have been selected by the EDS. As an example, here is the value of ...

Sep 14, 1999 ... Gain and offset corrections are applied by the EDS to Binned Burst Catcher data. ... as well as a coda of keywords summarizing EDS status. ...

Jun 11, 2002 ... DDL: Data Description Language. Purpose; Basic Syntax: DDL for TDDES Keywords; DDL For Science Event Data. Purpose ...

Aug 8, 1997 ... What PCA Data Are Like Before Being Packaged By The EDS. EDS Structure and Operation ... EDS Modes. Binned Data mode. Standard 1. Standard 2 ...

If you attempt to use a bitmask that does not obey SEEXTRCT's rules, it will attempt to .... SUM outputs the sum total of the the value of the counts. ...

... greater than BINSZ, they will not be included in the data extraction. ..... now been changed into aborting commands since a cascade effect would happen ...

Possible detection of Lense-Thirring precession around neutron stars and black holes, and discovery of unsuspected Lense-Thirring precession modes of the ...

We report evidence for an Fe K-alpha fluorescence line feature in the Very High, High, and Low state

Encapsulated atop the vehicle is the X-ray Timing Explorer (XTE), which the Delta ... The accreting gas can be guided to the magnetic pole of the compact object ...

Jun 29, 1998 ... Thus, XDF can locate any data. file, as long as it is given the path to the directory where the FMI file resides. ...

Jun 27, 2002 ... Here are descriptions of the known bugs in the XTE related tools released with FTOOLS v5.2. Please check this list before reporting a bug to ...

Apr 2, 2004 ... This Getting Started Guide does not, however, explain how to reduce .... XDF ( XTE Data Finder) is a tool with a graphical user interface (GUI) to ...

Jun 19, 1998 ... recipe will not work for your data! To find out how to remake an FMI file, see the Database. Management recipe. ...

Aug 20, 2001 ... A more complete description of the ASM products may be found in The XTE All Sky Monitor Data Products. (This document is also available via ...

Jul 16, 2001 ... Office of Guest Investigator Programs Grants Status. RXTE AO3 xte. Funding for Guest Observers will be initated within a week after the ...

Feb 28, 1996 ... A new "EDS" gain correction file for the PCA is now available in the HEASARC Calibration Database (ie via anonymous ftp from ...

essed on the ground in a standard man- ner or, more likely, in one of several objective-specific scenarios (depending ...

The X-ray binary XTE J1817-330 was discovered in outburst on 26 January 2006 with RXTE/ASM. One year later, another X-ray transient discovered in 1996, XTE J1856+053, was detected by RXTE during a new outburst on 28 February 2007. We triggered XMM-Newton target of opportunity observationson these two objects to constrain their parameters and search for a ...

Drs. Whitlock and Lochner are key players in an active Education and Public Outreach Group at NASA/GSFC which has developed the popular web-based learning ...

Matches, lighters, tobacco products, food or pocket knives may not be taken into the cleanroom. Launch of XTE will be aboard a McDonnell Douglas-built Delta ...

... GED-funded, materials R&D effort focused primarily on the HP compressor impeller, which had experienced a HCF failure in ATEGG testing, and ...

Copy an FMI from any of the above directories into ... and Download by ftp from legacy.gsfc.nasa.gov the following -auxilliary data files: ...

The authors comment on recent papers published by Capper et al. (1983) and Jones et al. (1983) which

May 6, 2009 ... Here we give an example of keywords used for the Primary and Data ... In Section 4.2 we give an example from XTE of the format with multiple ...

For a system exhibiting a more complex time evolution, the traditional tools of time series analysis often miss some underlying information in the data. ...

MIT X-Ray Timing Explorer Project � List of RXTE Target of Opportunity (TOO) Observations � XTE SOF ASM Light Curve Generator ...

XTE(ASM) and BATSE links to Accreting Pulsars. Last Updated: December 6, 2002 ... Undetermined Companion, Anomalous X-ray Pulsars (non-accretion objects) ...