THE MASSES OF 2 BINARY NEUTRON-STAR SYSTEMS

被引：116

作者：

THORSETT, SE

ARZOUMANIAN, Z

MCKINNON, MM

TAYLOR, JH

机构：

[1] PRINCETON UNIV,DEPT PHYS,PRINCETON,NJ 08544

[2] PRINCETON UNIV,JOSEPH HENRY LABS,PRINCETON,NJ 08544

[3] NATL RADIO ASTRON OBSERV,GREEN BANK,WV 24944

来源：

ASTROPHYSICAL JOURNAL | 1993年 / 405卷 / 01期

关键词：

BINARIES; GENERAL; PULSARS; STARS; INDIVIDUAL (PSR B1802; 07; PSR B2303+46); NEUTRON;

D O I：

10.1086/186758

中图分类号：

P1 [天文学];

学科分类号：

0704 ;

摘要：

The measurement or constraint of the masses of neutron stars and their binary companions test theories of neutron star structure and of pulsar formation and evolution. We have measured the rate of the general relativistic advance of the longitude of periastron for the pulsar PSR B1802-07: omega. = 0.060-degrees +/- 0.009-degrees yr-1, which implies a total system mass, pulsar plus companion star, of M = 1.7 +/- 0.4 M.. We also present a much improved measurement of the rate of periastron advance for PSR B2303 +/- 46: omega. = 0.0099-degrees +/- 0.0002-degrees yr-1, implying M = 2.53 +/- 0.08 M. for this system. We discuss the available constraints on distribution of mass between the pulsars and their companions, and we compare the pulsar masses with other determinations of neutron star masses.

引用

页码：L29 / L32

页数：4

共 28 条

[1] MASSES OF NEUTRON STARS AND BLACK-HOLES IN X-RAY BINARIES [J].