INTEGRAL and Swift observations of EXO 2030+375 during a giant outburst
| dc.contributor.author | Klochkov, D. | |
| dc.contributor.author | Horns, D. | |
| dc.contributor.author | Santangelo, A. | |
| dc.contributor.author | Staubert, R. | |
| dc.contributor.author | Segreto, A. | |
| dc.contributor.author | Ferrigno, C. | |
| dc.contributor.author | Kretschmar, P. | |
| dc.contributor.author | Kreykenbohm, I. | |
| dc.contributor.author | Barbera, A. La | |
| dc.contributor.author | Masetti, N. | |
| dc.contributor.author | McCollough, M. | |
| dc.contributor.author | Pottschmidt, Katja | |
| dc.contributor.author | Schönherr, G. | |
| dc.contributor.author | Wilms, J. | |
| dc.date.accessioned | 2023-10-06T21:07:14Z | |
| dc.date.available | 2023-10-06T21:07:14Z | |
| dc.date.issued | 2007-01-29 | |
| dc.description.abstract | Aims.We investigate the X-ray spectral and timing properties of the high mass X-ray binary EXO 2030+375 observed during its June–September 2006 giant (type II) outburst. Methods.The data analyzed in this work are from partly simultaneous observations with INTEGRAL and Swift. The pulse period P and its temporal derivative P are measured. X-ray pulse profiles in different energy ranges and time intervals are constructed. Pulse averaged X-ray spectra for different time intervals are studied. Results.We report a strong spin-up of the source during the outburst, comparable to that observed in 1985 during the previous giant outburst when the source was discovered. The value of P is found to be linearly related to the X-ray luminosity of the source during the outburst. For the first time the hard X-ray (>25 keV) characteristics of the source during a type II outburst are studied. The X-ray pulse profiles apparently change with luminosity. The X-ray spectral continuum in the 3–120 keV energy range is modeled with an absorbed power law with an exponential cutoff around E ~ 26 keV. An iron emission line at ~6–7 keV is observed. The spectrum reveals some features between 10 and 20 keV which can be modeled either by a broad emission line at ~13–15 keV (a “bump”) or by two absorption lines at ~10 and ~20 keV. | en_US |
| dc.description.sponsorship | D.K. thanks Konstantin Postnov for useful suggestions. We thank the referee Dr. Lucien Kuiper for his comments and corrections which improved clearness and readibility of the paper. We wish to thank the Swift PI, Neil Gehrels, and the Staff of the Swift Missions Operation Center as well as the INTEGRAL Mission Scientist, C. Winkler, and the ESA ISOC personnel for their patient help in scheduling the simultaneous observations of this Target of Opportunity Program. This research is supported by the German Space Agency (DLR) under contracts Nos. 50 OG 9601 and 50 OG 0501. | en_US |
| dc.description.uri | https://www.aanda.org/articles/aa/abs/2007/12/aa6801-06/aa6801-06.html | en_US |
| dc.format.extent | 4 pages | en_US |
| dc.genre | journal articles | en_US |
| dc.identifier | doi:10.13016/m298dy-a8pn | |
| dc.identifier.citation | Klochkov, D., D. Horns, A. Santangelo, R. Staubert, A. Segreto, C. Ferrigno, P. Kretschmar, et al. “INTEGRAL and Swift Observations of EXO 2030+375 during a Giant Outburst.” Astronomy & Astrophysics 464, no. 3 (March 1, 2007): L45–48. https://doi.org/10.1051/0004-6361:20066801. | en_US |
| dc.identifier.uri | https://doi.org/10.1051/0004-6361:20066801 | |
| dc.identifier.uri | http://hdl.handle.net/11603/30017 | |
| dc.language.iso | en_US | en_US |
| dc.publisher | EDP Sciences | 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.rights | Attribution 4.0 International (CC BY 4.0) | * |
| dc.rights.uri | https://creativecommons.org/licenses/by/4.0/ | * |
| dc.title | INTEGRAL and Swift observations of EXO 2030+375 during a giant outburst | en_US |
| dc.type | Text | en_US |
| dcterms.creator | https://orcid.org/0000-0002-4656-6881 | en_US |