Multiwavelength Observations of the Galactic Black Hole Transient 4U 1543–47 during Outburst Decay: State Transitions and Jet Contribution
| dc.contributor.author | Kalemci, E. | |
| dc.contributor.author | Tomsick, J. A. | |
| dc.contributor.author | Buxton, M. M. | |
| dc.contributor.author | Rothschild, R. E. | |
| dc.contributor.author | Pottschmidt, Katja | |
| dc.contributor.author | Corbel, S. | |
| dc.contributor.author | Brocksopp, C. | |
| dc.contributor.author | Kaaret, P. | |
| dc.date.accessioned | 2023-10-11T21:01:42Z | |
| dc.date.available | 2023-10-11T21:01:42Z | |
| dc.date.issued | 2005-03-20 | |
| dc.description.abstract | Multiwavelength observations of Galactic black hole (GBH) transients during state transitions and in the low/hard state may provide detailed information on the accretion structure of these systems. The object 4U 1543-47 is a GBH transient that was covered exceptionally well in X-rays and the infrared (daily observations) and reasonably well in the optical and radio during its outburst decay in 2002. When all the available information is gathered from the intermediate and the low/hard states, 4U 1543-47 makes an important contribution to our understanding of state transitions and the role of outflows in the high-energy emission properties of black hole binaries. The evolution of the X-ray spectral and temporal properties and the infrared light curve place strong constraints on different models to explain the overall emission from accreting black holes. The overall spectral energy distribution is consistent with a synchrotron origin for the optical and infrared emission; however, the X-ray flux is above the power-law continuation of the optical and infrared flux. The infrared light curve, the HEXTE light curve, and the evolution of the X-ray photon index indicate that the major source of hard X-rays cannot be direct synchrotron radiation from an acceleration region in a jet for most of the outburst decay. | en_US |
| dc.description.sponsorship | E. K. acknowledges NASA grant NAG 5-13142 and partial support from TU¨ B˙ITAK. The authors thank Sera Markoff, Jeroen Homan, and Juri Poutanen for useful discussion and comments. E. K. thanks all the scientists who contributed to the Tu¨bingen Timing Tools. The authors thank Charles Bailyn, who (along with M. M. Buxton) provided access to the OIR data prior to publication. J. A. T. acknowledges partial support from NASA grant NAG 5-13055. M. B. gratefully acknowledges support from the National Science Foundation through grant AST 00-98421. R. E. R. acknowledges NASA grant NAS 5-30270. K. P. acknowledges support from the Deutsches Zentrum fu¨r Luft- und Raumfahrt, grant 50 OG 95030. The authors also would like to thank Jean Swank and Evan Smith for all their scheduling efforts, especially scheduling the first P70128 observation as early as possible; that observation could not have taken place at a better time. We also would like to thank Rob Fender for his help coordinating the radio observations, and Steven Tingay for conducting the ATCA observations. The Australia Telescope Compact Array is part of the Australia Telescope, which is funded by the Commonwealth of Australia for operation as a National Facility managed by CSIRO. This work has made use of data obtained through the High Energy Astrophysics Science Archive Research Center online service, provided by the NASA Goddard Space Flight Center. | en_US |
| dc.description.uri | https://iopscience.iop.org/article/10.1086/427818 | en_US |
| dc.format.extent | 12 pages | en_US |
| dc.genre | journal articles | en_US |
| dc.identifier | doi:10.13016/m2oolo-cze2 | |
| dc.identifier.citation | Kalemci, E., J. A. Tomsick, M. M. Buxton, R. E. Rothschild, K. Pottschmidt, S. Corbel, C. Brocksopp, and P. Kaaret. “Multiwavelength Observations of the Galactic Black Hole Transient 4U 1543–47 during Outburst Decay: State Transitions and Jet Contribution.” The Astrophysical Journal 622, no. 1 (March 20, 2005): 508. https://doi.org/10.1086/427818. | en_US |
| dc.identifier.uri | https://doi.org/10.1086/427818 | |
| dc.identifier.uri | http://hdl.handle.net/11603/30080 | |
| dc.language.iso | en_US | en_US |
| dc.publisher | IOP Publishing | en_US |
| dc.relation.isAvailableAt | The University of Maryland, Baltimore County (UMBC) | |
| dc.relation.ispartof | UMBC Center for Space Sciences and Technology | |
| dc.relation.ispartof | UMBC Physics Department | |
| dc.rights | This item is likely protected under Title 17 of the U.S. Copyright Law. Unless on a Creative Commons license, for uses protected by Copyright Law, contact the copyright holder or the author. | en_US |
| dc.title | Multiwavelength Observations of the Galactic Black Hole Transient 4U 1543–47 during Outburst Decay: State Transitions and Jet Contribution | en_US |
| dc.type | Text | en_US |
| dcterms.creator | https://orcid.org/0000-0002-4656-6881 | en_US |