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GRO J1655-40: Early Stages of the 2005 Outburst
hal.structure.identifier | NASA Goddard Space Flight Center [GSFC] | |
dc.contributor.author | SHAPOSHNIKOV, N. | |
hal.structure.identifier | NASA Goddard Space Flight Center [GSFC] | |
dc.contributor.author | SWANK, J. | |
hal.structure.identifier | NASA Goddard Space Flight Center [GSFC] | |
dc.contributor.author | SHRADER, C. R. | |
hal.structure.identifier | National Optical Astronomy Observatory [NOAO] | |
dc.contributor.author | RUPEN, M. | |
hal.structure.identifier | NASA Goddard Space Flight Center [GSFC] | |
dc.contributor.author | BECKMANN, V. | |
hal.structure.identifier | NASA Goddard Space Flight Center [GSFC] | |
dc.contributor.author | MARKWARDT, C. B. | |
hal.structure.identifier | Centre d'Etudes Nucléaires de Bordeaux Gradignan [CENBG] | |
dc.contributor.author | SMITH, D. A. | |
dc.date.issued | 2007-01 | |
dc.identifier.issn | 0004-637X | |
dc.description.abstractEn | The black hole X-ray binary transient GRO J1655-40 underwent an outburst beginning in early 2005. We present the results of our multiwavelength observational campaign to study the early outburst spectral and temporal evolution, which combines data from X-ray (RXTE and INTEGRAL), radio (VLA), and optical (ROTSE and SMARTS) instruments. During the reported period, the source left quiescence and went through four major accreting black hole states: low-hard, hard intermediate, soft intermediate, and high-soft. We investigated dipping behavior in the RXTE band and compare our results to the 1996-1997 case, when the source was predominantly in the high-soft state, finding significant differences. We consider the evolution of the low-frequency quasi-periodic oscillations and find that the frequency strongly correlates with the spectral characteristics, before shutting off prior to the transition to the high-soft state. We model the broadband high-energy spectrum in the context of empirical models, as well as more physically motivated thermal and bulk motion Comptonization and Compton reflection models. RXTE and INTEGRAL data together support a statistically significant high-energy cutoff in the energy spectrum at ~100-200 keV during the low-hard state. The RXTE data alone also show it very significantly during the transition, but not in the high-soft state spectra. We consider radio, optical, and X-ray connections in the context of possible synchrotron and synchrotron self-Compton origins of X-ray emission in low-hard and intermediate states. In this outburst of GRO J1655-40, the radio flux does not rise strongly with the X-ray flux. | |
dc.language.iso | en | |
dc.publisher | American Astronomical Society | |
dc.subject.en | Accretion | |
dc.subject.en | Accretion Disks | |
dc.subject.en | Black Hole Physics | |
dc.subject.en | Gamma Rays: Observations | |
dc.subject.en | Stars: Individual: Alphanumeric: GRO J1655-40 | |
dc.title.en | GRO J1655-40: Early Stages of the 2005 Outburst | |
dc.type | Article de revue | |
dc.identifier.doi | 10.1086/509755 | |
dc.subject.hal | Physique [physics]/Astrophysique [astro-ph]/Phénomènes cosmiques de haute energie [astro-ph.HE] | |
dc.subject.hal | Planète et Univers [physics]/Astrophysique [astro-ph]/Phénomènes cosmiques de haute energie [astro-ph.HE] | |
dc.identifier.arxiv | astro-ph/0609757 | |
bordeaux.journal | The Astrophysical Journal | |
bordeaux.page | 434-446 | |
bordeaux.volume | 655 | |
bordeaux.peerReviewed | oui | |
hal.identifier | hal-00728383 | |
hal.version | 1 | |
hal.popular | non | |
hal.audience | Internationale | |
hal.origin.link | https://hal.archives-ouvertes.fr//hal-00728383v1 | |
bordeaux.COinS | ctx_ver=Z39.88-2004&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.jtitle=The%20Astrophysical%20Journal&rft.date=2007-01&rft.volume=655&rft.spage=434-446&rft.epage=434-446&rft.eissn=0004-637X&rft.issn=0004-637X&rft.au=SHAPOSHNIKOV,%20N.&SWANK,%20J.&SHRADER,%20C.%20R.&RUPEN,%20M.&BECKMANN,%20V.&rft.genre=article |
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