dc.contributor.author | Parke, WC | |
dc.contributor.author | Cline, T | |
dc.contributor.author | BALMAN, Şölen | |
dc.contributor.author | Kouveliotou, C | |
dc.contributor.author | Hurley, K | |
dc.contributor.author | Ibrahim, AI | |
dc.contributor.author | Markwardt, CB | |
dc.contributor.author | Swank, JH | |
dc.contributor.author | Ransom, S | |
dc.contributor.author | Roberts, M | |
dc.contributor.author | Kaspi, V | |
dc.contributor.author | Woods, PM | |
dc.contributor.author | Safi-Harb, S | |
dc.date.accessioned | 2021-03-05T13:57:40Z | |
dc.date.available | 2021-03-05T13:57:40Z | |
dc.date.issued | 2004 | |
dc.identifier.citation | Ibrahim A., Markwardt C., Swank J., Ransom S., Roberts M., Kaspi V., Woods P., Safi-Harb S., BALMAN Ş., Parke W., et al., "Discovery of a transient magnetar: XTE J1810-197", ASTROPHYSICAL JOURNAL, cilt.609, 2004 | |
dc.identifier.issn | 0004-637X | |
dc.identifier.other | vv_1032021 | |
dc.identifier.other | av_b4c896d8-d3cf-4325-a494-0f55ab091cad | |
dc.identifier.uri | http://hdl.handle.net/20.500.12627/120372 | |
dc.identifier.uri | https://doi.org/10.1086/422636 | |
dc.description.abstract | We report the discovery of a new X-ray pulsar, XTE J1810 - 197, that was serendipitously discovered on 2003 July 15 by the Rossi X-Ray Timing Explorer (RXTE) while observing the soft gamma repeater SGR 1806 - 20. The pulsar has a 5.54 s spin period, a soft X-ray spectrum ( with a photon index of approximate to 4), and is detectable in earlier RXTE observations back to 2003 January but not before. These show that a transient outburst began between 2002 November 17 and 2003 January 23 and that the source's persistent X-ray flux has been declining since then. The pulsar exhibits a high spin-down rate (P) over dot approximate to 10(-11) s s(-1) with no evidence of Doppler shifts due to a binary companion. The rapid spin-down rate and slow spin period imply a supercritical characteristic magnetic field B similar or equal to 3 x 10(14) G and a young age tau less than or equal to 7600 yr. Follow-up Chandra observations provided an accurate position of the source. Within its error radius, the 1.5 m Russian-Turkish Optical Telescope found a limiting magnitude R-C = 21.5. All such properties are strikingly similar to those of anomalous X-ray pulsars and soft gamma repeaters, providing strong evidence that the source is a new magnetar. However, archival ASCA and ROSAT observations found the source nearly 2 orders of magnitude fainter. This transient behavior and the observed long-term flux variability of the source in absence of an observed SGR-like burst activity make it the first confirmed transient magnetar and suggest that other neutron stars that share the properties of XTE J1810 - 197 during its inactive phase may be unidentified transient magnetars awaiting detection via a similar activity. This implies a larger population of magnetars than previously surmised and a possible evolutionary connection between magnetars and other neutron star families. | |
dc.language.iso | eng | |
dc.subject | Temel Bilimler (SCI) | |
dc.subject | ASTRONOMİ VE ASTROFİZİK | |
dc.subject | Astronomi ve Astrofizik | |
dc.subject | Fizik | |
dc.subject | Uzay bilimi | |
dc.subject | Temel Bilimler | |
dc.title | Discovery of a transient magnetar: XTE J1810-197 | |
dc.type | Makale | |
dc.relation.journal | ASTROPHYSICAL JOURNAL | |
dc.contributor.department | , , | |
dc.identifier.volume | 609 | |
dc.identifier.issue | 1 | |
dc.contributor.firstauthorID | 2212640 | |