A binary millisecond pulsar in globular cluster NGC 6544

Authors
Ransom, SM Greenhill, LJ Herrnstein, JR Manchester, RN Camilo, F Eikenberry, SS Lyne, AG
Citation
Sm. Ransom et al., A binary millisecond pulsar in globular cluster NGC 6544, ASTROPHYS J, 546(1), 2001, pp. L25-L28
Citations number
34
Categorie Soggetti
Space Sciences
Journal title
ASTROPHYSICAL JOURNAL
ISSN journal
0004637X → ACNP
Volume
546
Issue
1
Year of publication
2001
Part
2
Pages
L25 - L28
Database
ISI
SICI code
0004-637X(20010101)546:1<L25:ABMPIG>2.0.ZU;2-4
Abstract
We report the detection of a new 3.06 ms binary pulsar in the globular clus ter 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 simil ar to 1.7 hr, it displays orbital properties very similar to many pulsars t hat 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 certain ly the known steep-spectrum point source near the core of NGC 6544.