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XMM-Newton Observations of the Be/X-ray transient A0538-66 in quiescence | | P. Kretschmar
; J. Wilms
; R. Staubert
; I. Kreykenbohm
; W. A. Heindl
; | | Date: |
1 Jun 2004 | | Subject: | astro-ph | | Affiliation: | MPE/ISDC), J. Wilms (Univ. Warwick), R. Staubert (IAA Tuebingen), I. Kreykenbohm (IAAT/ISDC) and W. A. Heindl (CASS/UCSD | | Abstract: | We present XMM-Newton observations of the recurrent Be/X-ray transient A0538-66, situated in the Large Magellanic Cloud, in the quiescent state. Despite a very low luminosity state of (5-8)E33 ergs/s in the range 0.3-10 keV, the source is clearly detected up to ~8 keV. and can be fitted using either a power law with photon index alpha=1.9+-0.3 or a bremsstrahlung spectrum with kT=3.9+3.9-1.7 keV. The spectral analysis confirms that the off-state spectrum is hard without requiring any soft component, contrary to the majority of neutron stars observed in quiescence up to now. | | Source: | arXiv, astro-ph/0406015 | | Services: | Forum | Review | PDF | Favorites | |
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