SIMBAD references

2008ApJ...680L.133T - Astrophys. J., 680, L133-L136 (2008/June-3)

XMM-Newton observations of CXOU J010043.1-721134: the first deep look at the soft X-ray emission of a magnetar.


Abstract (from CDS):

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 fitted by an absorbed power-law plus blackbody model. The sum of two (absorbed) blackbody components with kT1=0.30±0.02 keV and kT2=0.7±0.1 keV gives an acceptable fit, and the radii of the corresponding blackbody emission regions are RBB1=12.1+2.1–1.4 km and RBB2=1.7+0.6–0.5km. 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, which 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.

Abstract Copyright:

Journal keyword(s): Stars: Pulsars: Individual: Alphanumeric: CXOU J010043.1-721134 - Stars: Neutron

Simbad objects: 9

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