The broad iron Kα line of Cygnus X-1 as seen by XMM-Newton in the EPIC-pn modified timing mode
| dc.contributor.author | Duro, R. | |
| dc.contributor.author | Dauser, T. | |
| dc.contributor.author | Wilms, J. | |
| dc.contributor.author | Pottschmidt, Katja | |
| dc.contributor.author | Nowak, M. A. | |
| dc.contributor.author | Fritz, S. | |
| dc.contributor.author | Kendziorra, E. | |
| dc.contributor.author | Kirsch, M. G. F. | |
| dc.contributor.author | Reynolds, C. S. | |
| dc.contributor.author | Staubert, R. | |
| dc.date.accessioned | 2023-09-21T19:13:05Z | |
| dc.date.available | 2023-09-21T19:13:05Z | |
| dc.date.issued | 2011-08-19 | |
| dc.description.abstract | We present the analysis of the broadened, flourescent iron Kα line in simultaneous XMM-Newton and RXTE data from the black hole Cygnus X-1. The XMM-Newton data were taken in a modified version of the timing mode of the EPIC-pn camera. In this mode the lower energy threshold of the instrument is increased to 2.8 keV to avoid telemetry drop outs due to the brightness of the source, while at the same time preserving the signal-to-noise ratio in the Fe Kα band. We find that the best-fit spectrum consists of the sum of an exponentially cutoff power-law and relativistically smeared, ionized reflection. The shape of the broadened Fe Kα feature is due to strong Compton broadening combined with relativistic broadening. Assuming a standard, thin accretion disk, the black hole is close to rotating maximally. | en |
| dc.description.sponsorship | This work was partly supported by the European Commission under contract ITN215212 “Black Hole Universe” and by the Bundesministerium für Wirtschaft and Technologie under Deutsches Zentrum für Luft- und Raumfahrt grants 50 OR 0701 and 50 OR 1001. This paper is based on observations obtained with XMM-Newton, an ESA science mission with instruments and contributions directly funded by ESA member states and NASA. We thank Norbert Schartel and the XMM-Newton operations team for agreeing to perform observations in a new and untested mode, Maria Díaz-Trigo for many useful discussions on CTE and pile-up effects in the EPIC-pn camera, Manfred Hanke for his significant input concerning the data analysis and interpretation for black hole X-ray data, and Jérome Rodriguez for his many insightful comments. | en |
| dc.description.uri | https://www.aanda.org/articles/aa/full_html/2011/09/aa17446-11/aa17446-11.html | en |
| dc.format.extent | 4 pages | en |
| dc.genre | journal articles | en |
| dc.identifier | doi:10.13016/m21vws-s1yx | |
| dc.identifier.citation | Duro, R., T. Dauser, J. Wilms, K. Pottschmidt, M. A. Nowak, S. Fritz, E. Kendziorra, M. G. F. Kirsch, C. S. Reynolds, and R. Staubert. “The Broad Iron Kα Line of Cygnus X-1 as Seen by XMM-Newton in the EPIC-Pn Modified Timing Mode.” Astronomy & Astrophysics 533 (September 1, 2011): L3. https://doi.org/10.1051/0004-6361/201117446. | en |
| dc.identifier.uri | https://doi.org/10.1051/0004-6361/201117446 | |
| dc.identifier.uri | http://hdl.handle.net/11603/29801 | |
| dc.language.iso | en | en |
| dc.publisher | EDP Sciences | en |
| 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.relation.ispartof | UMBC Faculty Collection | |
| dc.rights | Attribution 4.0 International (CC BY 4.0) | * |
| 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 |
| dc.rights.uri | https://creativecommons.org/licenses/by/4.0/ | * |
| dc.title | The broad iron Kα line of Cygnus X-1 as seen by XMM-Newton in the EPIC-pn modified timing mode | en |
| dc.type | Text | en |
| dcterms.creator | https://orcid.org/0000-0002-4656-6881 | en |