Astronomy and Astrophysics – Astrophysics
Scientific paper
2008-05-15
Astronomy and Astrophysics
Astrophysics
5 pages (in emulate-apj style), 3 figures; accepted for publication in ApJ Letters
Scientific paper
10.1086/590078
We present the analysis of six XMM-Newton observations of the Anomalous X-ray Pulsar CXOU J010043.1-721134, the magnetar candidate characterized by the lowest interstellar absorption. In contrast with all the other magnetar candidates, its X-ray spectrum cannot be fit by an absorbed power-law plus blackbody model. The sum of two (absorbed) blackbody components with kT1=0.30 keV and kT2=0.7 keV gives an acceptable fit, and the radii of the corresponding blackbody emission regions are R1=12.1 km and R2=1.7 km. The former value is consistent with emission from a large fraction of a neutron star surface and, given the well known distance of CXOU J010043.1-721134, that is located in the Small Magellanic Cloud, it provides the most constraining lower limit to a magnetar radius ever obtained. A more physical model, where resonant cyclotron scattering in the magnetar magnetosphere is taken into account, has also been successfully applied to this source.
Esposito Paolo
Mereghetti Sandro
Tiengo Andrea
No associations
LandOfFree
XMM-Newton observations of CXOU J010043.1-721134: the first deep look at the soft X-ray emission of a magnetar does not yet have a rating. At this time, there are no reviews or comments for this scientific paper.
If you have personal experience with XMM-Newton observations of CXOU J010043.1-721134: the first deep look at the soft X-ray emission of a magnetar, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and XMM-Newton observations of CXOU J010043.1-721134: the first deep look at the soft X-ray emission of a magnetar will most certainly appreciate the feedback.
Profile ID: LFWR-SCP-O-509811