An upper limit on the coalescence rate of double neutron-star binaries in the Galaxy

被引:44
作者
Kalogera, V
Lorimer, DR
机构
[1] Harvard Smithsonian Ctr Astrophys, Cambridge, MA 02138 USA
[2] Arecibo Observ, Arecibo, PR 00612 USA
关键词
binaries : close; pulsars : general; stars : neutron;
D O I
10.1086/308417
中图分类号
P1 [天文学];
学科分类号
0704 ;
摘要
In the context of assessing the detectability of the coalescence of two neutron stars (NS) by currently built gravitational wave experiments, we present a way of obtaining an upper limit to the coalescence rate in the Galaxy. We consider the NS/NS progenitors just before the second supernova explosion. We combine the theoretical understanding of orbital dynamics at NS formation with methods of empirically estimating pulsar birth rates and derive an upper limit of a few mergers every 10(5) yr. Such a Galactic rate implies a possible detection by the "enhanced" LIGO of up to a few to 10 mergers per year.
引用
收藏
页码:890 / 895
页数:6
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