dc.contributor.author | Woods, P. M. | |
dc.contributor.author | Olausen, S. A. | |
dc.contributor.author | Scholz, P. | |
dc.contributor.author | Oezel, F. | |
dc.contributor.author | Gavriil, F. P. | |
dc.contributor.author | Guever, Tolga | |
dc.contributor.author | Ng, C. -Y. | |
dc.contributor.author | Kaspi, V. M. | |
dc.contributor.author | Dib, R. | |
dc.date.accessioned | 2021-03-03T07:40:13Z | |
dc.date.available | 2021-03-03T07:40:13Z | |
dc.date.issued | 2011 | |
dc.identifier.citation | Ng C. -. , Kaspi V. M. , Dib R., Olausen S. A. , Scholz P., Guever T., Oezel F., Gavriil F. P. , Woods P. M. , "CHANDRA AND RXTE OBSERVATIONS OF 1E 1547.0-5408: COMPARING THE 2008 AND 2009 OUTBURSTS", ASTROPHYSICAL JOURNAL, cilt.729, sa.2, 2011 | |
dc.identifier.issn | 0004-637X | |
dc.identifier.other | vv_1032021 | |
dc.identifier.other | av_1334c576-2b5a-48e4-bb54-cd65bbbce4a9 | |
dc.identifier.uri | http://hdl.handle.net/20.500.12627/18374 | |
dc.identifier.uri | https://doi.org/10.1088/0004-637x/729/2/131 | |
dc.description.abstract | We present results from Chandra X-ray Observatory and Rossi X-ray Timing Explorer (RXTE) observations of the magnetar 1E 1547.0-5408 (SGR J1550-5418) following the source's outbursts in 2008 October and 2009 January. During the time span of the Chandra observations, which covers days 4 through 23 and days 2 through 16 after the 2008 and 2009 events, respectively, the source spectral shape remained stable in the Chandra band, while the pulsar's spin-down rate in the same span in 2008 increased by a factor of 2.2 as measured by RXTE. This suggests decoupling between the source's spin-down and radiative changes, hence between the spin-down-inferred magnetic field strength and that inferred spectrally. The lack of spectral variation during flux decay is surprising for models of magnetar outbursts. We also found a strong anti-correlation between the phase-averaged flux and the pulsed fraction in the 2008 and 2009 Chandra data, but not in the pre-2008 measurements. We discuss these results in the context of the magnetar model. | |
dc.language.iso | eng | |
dc.subject | Temel Bilimler (SCI) | |
dc.subject | ASTRONOMİ VE ASTROFİZİK | |
dc.subject | Uzay bilimi | |
dc.subject | Fizik | |
dc.subject | Astronomi ve Astrofizik | |
dc.subject | Temel Bilimler | |
dc.title | CHANDRA AND RXTE OBSERVATIONS OF 1E 1547.0-5408: COMPARING THE 2008 AND 2009 OUTBURSTS | |
dc.type | Makale | |
dc.relation.journal | ASTROPHYSICAL JOURNAL | |
dc.contributor.department | Mcgill University , , | |
dc.identifier.volume | 729 | |
dc.identifier.issue | 2 | |
dc.contributor.firstauthorID | 582109 | |