期刊
MONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETY
卷 412, 期 1, 页码 L63-L67出版社
OXFORD UNIV PRESS
DOI: 10.1111/j.1745-3933.2010.01006.x
关键词
astrometry; binaries: general; stars: early-type; pulsars: general; pulsars: individual: PSR J1740-3052; infrared: stars
资金
- NSERC Discovery Grant
- STFC [ST/G002487/1] Funding Source: UKRI
We report on the identification of a near-infrared counterpart to the massive (> 11M(circle dot)) binary companion of pulsar J1740-3052. An accurate celestial position of PSR J1740-3052 is determined from interferometric radio observations. Adaptive optics corrected near-infrared imaging observations show a counterpart at the interferometric position of the pulsar. The counterpart has K-s = 15.87 +/- 0.10 and J - K-s > 0.83. Based on distance and absorption estimates from models of the Galactic electron and dust distributions, these observed magnitudes are consistent with those of a main-sequence star as the binary companion. We argue that this counterpart is the binary companion to PSR J1740-3052 and thus rule out a stellar mass black hole as the pulsar companion.
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