Physics
Scientific paper
Oct 2010
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2010xmm..prop...35i&link_type=abstract
XMM-Newton Proposal ID #06709127
Physics
White Dwarf Binaries, Neutron Star Binaries, Cataclysmic Variables, Ulxs, Black Holes, 4U 1254-690, 4U 1636-536, 1A 1246-588, 4U 1735-444, Gx 3+1, 4U 1820-303, Ser X-1, Slx 1735-269, 4U 1608-522, 4U 1702-429, 4U 1705-44, Gx 354-0, 1A 1742-294, Slx 1744-300, Gs 1826-24, 4U 1915-05, 4U 0513-40, 1E 1724-307, 4U 1812-12, 2S 0918-549, 4U 1708-40, 4U 1850-087, 4U 0614+091, Rx J1832-33, M15 X-2, 4U 1746-31, 4U 1708-40
Scientific paper
Superbursts are thermonuclear X-ray flashes on neutron stars that last up to 14 hr. We propose to carry out 2 quick 25 ks XMM-Newton triggered observations on superbursts from any of 23 (candidate) superbursters that persistently radiate at 30% of Eddington or slower, to carry out high-resolution X-ray spectroscopy of the neutron star surface and constrain the mass-radius relation and equation of state of neutron stars. We will make use of superburst alerts from INTEGRAL/IBIS and Swift/BAT. The potential of this program is at least as good as that of the program on EXO 0748-676, but at much reduced exposure requirements (50 ks in total).
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