The Mass of the X-ray Pulsar in X1822-371

Details The Mass of the X-ray Pulsar in X1822-371 The Mass of the X-ray Pulsar in X1822-371

Feb 2008

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2008aipc..983..542m&link_type=abstract

40 YEARS OF PULSARS: Millisecond Pulsars, Magnetars and More. AIP Conference Proceedings, Volume 983, pp. 542-544 (2008).

Computer Science

1

X-Ray Binaries, Pulsars, Neutron Stars, Accretion And Accretion Disks, Masses

Scientific paper

We have computed the K-correction for emission lines formed on the irradiated face of the companion stars in X-ray binaries. Our results, combined with the detection of high excitation emission lines arising from the donor star can provide the first mass determinations for either neutron stars or black holes in active Low Mass X-ray Binaries (LMXBs). Here we present preliminary results of a high spectral resolution VLT+UVES campaign on the LMXB X-ray pulsar X1822-371. We measure a emission line velocity of Kem = 280+/-3 km s-1. The application of the K-correction to this Kem together with previous determinations of system parameters yields 1.52Msolar

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