Journal
ASTROPHYSICAL JOURNAL
Volume 546, Issue 1, Pages L25-L28Publisher
UNIV CHICAGO PRESS
DOI: 10.1086/318062
Keywords
globular clusters : individual (NGC 6544); pulsars : individual (PSR J1807-2459) radio continuum : stars
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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.
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