Accreting pulsars in quiescence

Details Accreting pulsars in quiescence Accreting pulsars in quiescence

Oct 2010

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2010xmm..prop..177d&link_type=abstract

XMM-Newton Proposal ID #06741801

Other

White Dwarf Binaries, Neutron Star Binaries, Cataclysmic Variables, Ulxs, Black Holes, 1A 0535+26

Scientific paper

After more than 40 years of studies, surprisingly little is known on the emission of accreting pulsars at low-luminosity. It was suggested that already at 10^{35} ergs/s the onset of a centrifugal barrier should inhibit the accretion. On the other hand, pulsations during quiescence were reported for three transient pulsars, namely 1A 0535+262, 4U 1145-619, and 1A 1118-61. Accretion nature of the emission is suggested by short-term variability, energetics, hard X-ray spectrum and pulsations. It is unclear, however how the accretion proceeds in this case. Here, we propose to observe 1A 0535+262, 4U 1145-619, and 1A 1118-61 with XMM-Newton to study their spectral and timing properties to clarify the nature of pulsed emission at low luminosities.

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