A MASSIVE RADIO PULSAR BINARY IN THE SMALL MAGELLANIC CLOUD

被引：106

作者：

KASPI, VM

JOHNSTON, S

BELL, JF

MANCHESTER, RN

BAILES, M

BESSELL, M

LYNE, AG

DAMICO, N

机构：

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

[2] CSIRO, AUSTRALIA TELESCOPE NATL FACIL, EPPING, NSW 2121, AUSTRALIA

[3] UNIV SYDNEY, THEORET ASTROPHYS RES CTR, SYDNEY, NSW 2006, AUSTRALIA

[4] AUSTRALIAN NATL UNIV, MT STROMLO & SIDING SPRING OBSERV, WESTON 2611, AUSTRALIA

[5] UNIV MANCHESTER, NUFFIELD RADIO ASTRON LABS, MACCLESFIELD SK11 9DL, CHESHIRE, ENGLAND

[6] UNIV PALERMO, IST FIS, I-90123 PALERMO, ITALY

[7] CNR, IST RADIOASTRON, I-40126 BOLOGNA, ITALY

来源：

ASTROPHYSICAL JOURNAL | 1994年 / 423卷 / 01期

关键词：

BINARIES; GENERAL; MAGELLANIC CLOUDS; PULSARS; INDIVIDUAL; PSR-J0045-7319;

D O I：

10.1086/187231

中图分类号：

P1 [天文学];

学科分类号：

0704 ;

摘要：

We have discovered regular Doppler shifts of the pulse period of PSR J0045 - 7319, the only known pulsar in the Small Magellanic Cloud. These indicate that the pulsar is in a highly eccentric 51 day orbit with a companion star of mass greater than 4 M.. No regular eclipses of the pulsed signal are observed. Optical observations in the direction of the pulsar reveal a 16th magnitude B star, which we conclude is the pulsar's companion. Timing observations imply that this pulsar has not been spun up by accretion from the companion, suggesting that, like the PSR B1259-63 binary system, the PSR J0045-7319 system is a progenitor of an X-ray binary system.

引用

页码：L43 / L45

页数：3

共 13 条

[1]

Blaauw A., 1961, B ASTRON I NETH, V15, P265, DOI DOI 10.1111/J.1558-5646.1961.TB03150.X

[2]

CLARET A, 1991, ASTRON ASTROPHYS SUP, V87, P507

[3]

DEJAGER C, 1988, ASTRON ASTROPHYS SUP, V72, P259

[4] STUDIES CONCERNING EXISTENCE OF RUNAWAY STARS WITH COLLAPSED COMPANIONS [J].