The eccentric binary millisecond pulsar in NGC 1851

被引：0
|
作者：
Freire, Paulo C. C.
Ransom, Scott M.
Gupta, Yashwant
机构：
来源：
40 YEARS OF PULSARS: MILLISECOND PULSARS, MAGNETARS AND MORE | 2007年 / 983卷
关键词：
millisecond pulsars; binary pulsars; precision timing;
D O I：
暂无
中图分类号：
P1 [天文学];
学科分类号：
0704 ;
摘要：
PSR J0514-4002A is a 5-ms pulsar is located in the globular cluster NGC 185 1; it belongs to a highly eccentric (e = 0.888) binary system. It is one of the earliest known examples of a numerous and fast-growing class of eccentric binary MSPs recently discovered in globular clusters. Using the GBT, we have obtained a phase-coherent timing solution for the pulsar, which includes a measurement of the rate of advance of periastron (omega) over dot = 0.01289(4)degrees yr(-1), which if due completely to general relativity, implies a total system mass of 2.453(14)M-circle dot; we also derive m(p) 1.5M(circle dot) and m(c) 0.96M(circle dot). The companion is likely to be a massive white dwarf star.
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页码：491 / 493
页数：3
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