ROSAT observations of the binary millisecond pulsar PSR j0751+1807

被引：13
|
作者：
Becker, W
Trumper, J
Lundgren, SC
Cordes, JM
Zepka, AF
机构：
[1] USN,RES LAB,REMOTE SENSING DIV,WASHINGTON,DC 20375
[2] CORNELL UNIV,ITHACA,NY 14853
[3] UNIV CALIF BERKELEY,DEPT ASTRON,BERKELEY,CA 94720
来源：
MONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETY | 1996年 / 282卷 / 03期
关键词：
binaries; general; stars; individual; RX J075109.7+180736; neutron; pulsars; PSR J0751+1807; X-rays; RAPIDLY SPINNING PULSARS; ENERGETIC RADIATION; X-RAYS;
D O I：
10.1093/mnras/282.3.L33
中图分类号：
P1 [天文学];
学科分类号：
0704 ;
摘要：
We report the discovery of the binary millisecond pulsar PSR J0751+1807 in the soft X-ray domain with ROSAT. The low number of source counts does not allow a detailed spectral modelling. Assuming an energy spectrum similar to that of PSR J0437-4715 implies, for the pulsar X-ray flux, f(x) similar to 1 x 10(-13) erg s(-1) cm(-2) within the 0.1-2.4 keV energy range. This corresponds to an X-ray luminosity of L(x) similar to 4.7 x 10(31) erg s(-1) if we adopt the dispersion measure based pulsar distance of 2 kpc. A photon arrival time analysis does not reveal significant X-ray pulses. A sine-wave fit to the folded light curve results in a 2 sigma pulsed fraction upper limit of 35 per cent.
引用
收藏
页码：L33 / L36
页数：4
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