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Observations have revealed strong evidence for powerful jets in the Low/Hard states of black hole candidate X-ray binaries. Correlations, both temporal and spectral, between the radio -- infrared and X-ray bands suggest that jet synchrotron…

Astrophysics · Physics 2011-05-23 Sera Markoff , Heino Falcke , Rob Fender

The black hole X-ray transient, XTE J1118+480, has now twice been observed in outburst - 2000 and 2005 - and on both occasions remained in the low/hard X-ray spectral state. Here we present radio, infrared, optical, soft X-ray and hard…

High Energy Astrophysical Phenomena · Physics 2015-05-14 C. Brocksopp , P. G. Jonker , D. Maitra , H. A. Krimm , G. G. Pooley , G. Ramsay , C. Zurita

We present multiwavelength observations of the newly discovered X-ray transient XTE J1118+480 obtained in the rising phase of the 2000 April outburst. This source is located at unusually high Galactic latitude and in a very low absorption…

Astrophysics · Physics 2009-10-31 R. I. Hynes , C. W. Mauche , C. A. Haswell , C. R. Shrader , W. Cui , S. Chaty

We report multiwavelength observations of the soft X-ray transient (SXT) XTE J1118+480, which we observed with UKIRT, HST, RXTE, EUVE and many other instruments and facilities. Adding radio (Ryle Telescope, VLA), sub-millimeter (JCMT) and…

Astrophysics · Physics 2009-11-10 S. Chaty , C. A. Haswell , J. Malzac , R. I. Hynes , C. R. Shrader , W. Cui

We present radio observations of the black hole X-ray transient XTE J1720-318, which was discovered in 2003 January as it entered an outburst. We analyse the radio data in the context of the X-ray outburst and the broad-band spectrum. An…

Astrophysics · Physics 2009-11-10 C. Brocksopp , S. Corbel , R. P. Fender , M. Rupen , R. Sault , S. J. Tingay , D. Hannikainen , K. O'Brien

We present simultaneous multicolor infrared and optical photometry of the black hole X-ray transient XTE J1118+480 during its short 2005 January outburst, supported by simultaneous X-ray observations. The variability is dominated by short…

[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…

High Energy Astrophysical Phenomena · Physics 2015-05-18 D. M. Russell , D. Maitra , R. J. H. Dunn , S. Markoff

We have simultaneously fit Chandra and RXTE spectra of the Galactic black hole XTE J1118+480 with three models for X-ray reflection. We explored a range of accretion disc ionizations (log(xi)=1-4; xi=L_X/nR^{2}) and iron abundances…

Astrophysics · Physics 2009-09-17 J. M. Miller , D. R. Ballantyne , A. C. Fabian , W. H. G. Lewin

We study spectral and temporal properties of Galactic short orbital period transient black hole XTE J1118+480 during its 2005 outburst using archival data of RXTE PCA and HEXTE instruments in the combined energy range of $3-100$ keV.…

High Energy Astrophysical Phenomena · Physics 2020-12-02 Dipak Debnath , Debjit Chatterjee , Arghajit Jana , Sandip K. Chakrabarti , Kaushik Chatterjee

We report radio observations, made with the Australia Telescope Compact Array, of the X-ray transient XTE J1701-462. This system has been classified as a new `Z' source, displaying characteristic patterns of behaviour probably associated…

Astrophysics · Physics 2009-11-13 R P Fender , M Dahlem , J Homan , S Corbel , R Sault , T M Belloni

We report here on multiwavelength observations of the two new soft X-ray transients (SXTs) XTE J1859+226 and XTE J1118+480, which we observed with HST/RXTE/UKIRT. For XTE J1118+480 we also used EUVE since it is located at a very high…

We report on optical spectroscopic observations of the X-ray Transient XTE J1118+480 covering the period from April 7, 2000 to July 4, 2000. The spectrum is characterized by weak, broad, double-peaked Balmer and He lines on top of a blue…

Astrophysics · Physics 2009-10-31 Guillaume Dubus , Rita S. J. Kim , Kristen Menou , Paula Szkody , David V. Bowen

We report on simultaneous radio and X-ray observations of the black hole candidate XTE J1650-500 during the course of its 2001-2002 outburst. The scheduling of the observations allowed us to sample the properties of XTE J1650-50 in…

Astrophysics · Physics 2008-11-26 S. Corbel , R. P. Fender , J. A. Tomsick , A. K. Tzioumis , S. Tingay

In this article, models are constructed of the compact jet in GRS 1915+105 during an epoch of optimal data capture. On April 02, 2003, the object was observed in the hard X-ray/soft gamma ray band (INTEGRAL), hard X-ray band (RXTE), near IR…

High Energy Astrophysical Phenomena · Physics 2015-05-30 Brian Punsly

We report on results of a target of opportunity observation of the X-ray transient XTE J1118+480 performed on 2000 April 14-15 with the Narrow Field Instruments (0.1-200 keV) of the SAX satellite. The measured spectrum is a power law with a…

The transient black hole binary XTE J1118+480 exhibited dramatic rapid variability at all wavelengths which were suitably observed during its 2000 April-July outburst. We examine time-resolved X-ray, ultraviolet, optical, and infrared data…

We report on radio and X-ray observations of the black hole candidate (BHC) XTE J1550-564 performed during its 2000 X-ray outburst. Observations have been conducted with the Australia Telescope Compact Array (ATCA) and have allowed us to…

X-ray binaries are known to show state transitions related to accretion rate changes which are often accompanied with dramatic changes in the jet emission. However, it is not clear whether this characteristics of stellar-mass black hole…

Astrophysics of Galaxies · Physics 2023-04-21 K. É. Gabányi , K. Smith , S. Frey , Z. Paragi , T. An , A. Moór

We present optical and infrared monitoring of the 2005 outburst of the halo black hole X-ray transient XTE J1118+480. We measured a total outburst amplitude of ~5.7+-0.1 mag in the R band and ~5 mag in the infrared J, H and K_s bands. The…

Four persistent (Cygnus X-1, GX 339-4, GRS 1758-258 and 1E 1740.7-2942) and three transient (GS 2023+38, GRO J0422+32 and GS 1354-64) black hole X-ray binary systems have been extensively observed at radio wavelengths during extended…

Astrophysics · Physics 2009-10-31 R. P. Fender
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