4U 1909+07: a well-hidden pearl (Conf. Proc.)
| dc.contributor.author | Fürst, F. | |
| dc.contributor.author | Kreykenbohm, I. | |
| dc.contributor.author | Barragán, L. | |
| dc.contributor.author | Wilms, J. | |
| dc.contributor.author | Rothschild, R. E. | |
| dc.contributor.author | Suchy, S. | |
| dc.contributor.author | Pottschmidt, Katja | |
| dc.date.accessioned | 2023-09-29T20:39:18Z | |
| dc.date.available | 2023-09-29T20:39:18Z | |
| dc.date.issued | 2010-10-28 | |
| dc.description | 2009 Fermi Symposium, Washington, D.C., Nov. 2-5, 2009 | en_US |
| dc.description.abstract | We present the first detailed spectral and timing analysis of the High Mass X-ray Binary (HMXB) 4U 1909+07 with INTEGRAL and RXTE. 4U 1909+07 is detected with an average of 2.4 cps in ISGRI, but shows flares up to ∼50 cps. The system shows a pulse period of 605 s, but we found that the period changes erratically around this value. The pulse profile is extremely energy dependent: while it shows a double peaked structure at low energies, the secondary pulse decreases rapidly with increasing energy and above 20 keV only the primary pulse is visible. This evolution is consistent between PCA, HEXTE and ISGRI. We find that the phase averaged spectrum can be well fitted with a photoabsorbed power law with a cutoff at high energies and a blackbody component. To investigate the peculiar pulse profile, we performed phase resolved spectral analysis. We find that a change in the cutoff energy is required to fit the changing spectrum of the different pulse phases. | en_US |
| dc.description.sponsorship | This work was supported by the Bundeministerium fur Wirtschaft und Technologie through DLR grant 50 OR 0808 and via a DAAD fellowship. This work has been partially funded by the European Commission under the 7th Framework Program under contract ITN 215212. FF thanks the colleagues at UCSD and GSFC for their hospitality. This research has made use of NASA’s Astrophysics Data System. This work is based on observations with INTEGRAL, an ESA project with instruments and science data centre funded by ESA member states (especially the PI countries: Denmark, France, Germany, Italy, Switzerland, Spain), Czech Republic and Poland, and with the participation of Russia and the USA. | en_US |
| dc.description.uri | https://arxiv.org/abs/0912.3702 | en_US |
| dc.format.extent | 6 pages | en_US |
| dc.genre | conference papers and proceedings | en_US |
| dc.genre | preprints | en_US |
| dc.identifier | doi:10.13016/m2a4mj-md9n | |
| dc.identifier.uri | https://doi.org/10.48550/arXiv.0912.3702 | |
| dc.identifier.uri | http://hdl.handle.net/11603/29928 | |
| dc.language.iso | en_US | 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 Faculty Collection | |
| 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 | 4U 1909+07: a well-hidden pearl (Conf. Proc.) | en_US |
| dc.type | Text | en_US |
| dcterms.creator | https://orcid.org/0000-0002-4656-6881 | en_US |