A torque reversal of 4U 1907+09
| dc.contributor.author | Fritz, S. | |
| dc.contributor.author | Kreykenbohm, I. | |
| dc.contributor.author | Wilms, J. | |
| dc.contributor.author | Staubert, R. | |
| dc.contributor.author | Bayazit, F. | |
| dc.contributor.author | Pottschmidt, Katja | |
| dc.contributor.author | Rodriguez, J. | |
| dc.contributor.author | Santangelo, A. | |
| dc.date.accessioned | 2023-10-06T21:08:04Z | |
| dc.date.available | 2023-10-06T21:08:04Z | |
| dc.date.issued | 2006-09-12 | |
| dc.description.abstract | Aims.We present an analysis of the accreting X-ray pulsar system 4U 1907+09 based on INTEGRAL data. The main focus of this analysis is a study of the timing behavior of this source. In addition we also show an analysis of the 5–90 keV spectrum. Methods.The data were extracted using the official INTEGRAL software OSA 5.1. Timing analysis was performed using epoch folding and pulsar pulse phasing. Results.We have measured 12 individual pulse periods for the years 2003 to 2005. We confirm earlier RXTE results that during 2003 the spin down became slower and show furthermore that after this phase 4U 1907+09 started to spin up with ṗₚᵤₗₛₑ = -0.158s yr⁻¹ in 2004. The similarity of the pulse period histories of 4U 1907+09 and 4U 1626-26 suggests that accretion onto an oblique rotator, as recently proposed by Perna et al., is a possible explanation for this change. | en_US |
| dc.description.sponsorship | We acknowledge the support of the Deutsches Zentrum für Luft- und Raumfahrt under grant numbers 50OR0302, 50OG9601, and 50OG0501, and by National Aeronautics and Space Administration grant INTEG04-0000-0010. This work is based on observations with INTEGRAL, an European Space Agency (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://www.aanda.org/articles/aa/abs/2006/42/aa5557-06/aa5557-06.html | en_US |
| dc.format.extent | 9 pages | en_US |
| dc.genre | journal articles | en_US |
| dc.identifier | doi:10.13016/m2qheo-efs4 | |
| dc.identifier.citation | Fritz, S., I. Kreykenbohm, J. Wilms, R. Staubert, F. Bayazit, K. Pottschmidt, J. Rodriguez, and A. Santangelo. “A Torque Reversal of 4U 1907+09.” Astronomy & Astrophysics 458, no. 3 (November 1, 2006): 885–93. https://doi.org/10.1051/0004-6361:20065557. | en_US |
| dc.identifier.uri | https://doi.org/10.1051/0004-6361:20065557 | |
| dc.identifier.uri | http://hdl.handle.net/11603/30020 | |
| 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 | A torque reversal of 4U 1907+09 | en_US |
| dc.type | Text | en_US |
| dcterms.creator | https://orcid.org/0000-0002-4656-6881 | en_US |