The enigmatic neutron star X-ray binary AX J1754.2-2754

Details The enigmatic neutron star X-ray binary AX J1754.2-2754 The enigmatic neutron star X-ray binary AX J1754.2-2754

Oct 2009

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2009xmm..prop...45d&link_type=abstract

XMM-Newton Proposal ID #06514501

Other

White Dwarf Binaries, Neutron Star Binaries, Cataclysmic Variables, Ulxs, Black Holes, Ax J1754.2-2754

Scientific paper

We propose a single 35 ksec XMM-Newton observation of the very-faint X-ray binary AX J1754.2-2754, an enigmatic neutron star system that is underluminous by orders of magnitude compared to the well-known bright sources. AX J1754.2-2754 is a candidate ultra-compact X-ray binary and observations with other X-ray satellites suggest that it has an unusually soft spectrum with a powerlaw index of ~3. With our proposed observation we will obtain high-quality data of AX J1754.2-2754, which allows for a detailed spectral (e.g., verify its softness) and timing study (e.g., search for possible orbital modulations, X-ray pulsations and type-I X-ray bursts), which can refine our understanding of the nature of this system.

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