A binary millisecond pulsar in globular cluster NGC 6544

被引：34

作者：

Ransom, SM

Greenhill, LJ

Herrnstein, JR

Manchester, RN

Camilo, F

Eikenberry, SS

Lyne, AG

机构：

[1] Harvard Smithsonian Ctr Astrophys, Cambridge, MA 02138 USA

[2] Natl Radio Astron Observ, Socorro, NM 87801 USA

[3] CSIRO, Australia Telescope Natl Facil, Epping, NSW 1710, Australia

[4] Columbia Univ, Columbia Astrophys Lab, New York, NY 10027 USA

[5] Cornell Univ, Dept Astron, Ithaca, NY 14853 USA

[6] Univ Manchester, Jodrell Bank Observ, Macclesfield SK11 9DL, Cheshire, England

来源：

ASTROPHYSICAL JOURNAL | 2001年 / 546卷 / 01期

基金：

美国国家航空航天局; 美国国家科学基金会;

关键词：

globular clusters : individual (NGC 6544); pulsars : individual (PSR J1807-2459) radio continuum : stars;

D O I：

10.1086/318062

中图分类号：

P1 [天文学];

学科分类号：

0704 ;

摘要：

We report the detection of a new 3.06 ms binary pulsar in the globular cluster NGC 6544 using a Fourier-domain "acceleration" search. With an implied companion mass of similar to0.01 M. and an orbital period of only P-b similar to 1.7 hr, it displays orbital properties very similar to many pulsars that are eclipsed by their companion winds. The orbital period is the second shortest of known binary pulsars after 47 Tuc R. The measured flux density of 1.3 +/- 0.4 mJy at 1332 MHz indicates that the pulsar is almost certainly the known steep-spectrum point source near the core of NGC 6544.

引用

页码：L25 / L28

页数：4

共 34 条

[1] DISCOVERY OF 2 RADIO PULSARS IN THE GLOBULAR-CLUSTER M15 [J].