OPTICAL NEAR-INFRARED OBSERVATIONS OF GRO J1744-28/

Citation
Dm. Cole et al., OPTICAL NEAR-INFRARED OBSERVATIONS OF GRO J1744-28/, The Astrophysical journal, 480(1), 1997, pp. 377
Citations number
30
Categorie Soggetti
Astronomy & Astrophysics
Journal title
ISSN journal
0004637X
Volume
480
Issue
1
Year of publication
1997
Part
1
Database
ISI
SICI code
0004-637X(1997)480:1<377:ONOOGJ>2.0.ZU;2-I
Abstract
We present results from a series of optical (g- and r-band) and near-i nfrared (K'-band) observations of the region of the sky including the entire Rossi X-Ray Tinting Explorer and ROSAT error circles for the '' Bursting Pulsar,'' GRO J1744-28. These data were taken with the Astrop hysical Research Consortium's 3.5 m telescope at Apache Point Observat ory and with the 2.2 m telescope at the European Southern Observatory. We see no new object, or any significant brightening of any known obj ect, in these error circles, with the exception of an object detected in our 1996 February 8 image. This object has already been proposed as a near-infrared counterpart to GRO J1744-28. While it is seen in only two of our 10 frames from February 8, there is no evidence that this is an instrumental artifact, suggesting the possibility of near-infrar ed flares from GRO J1744-28, similar to those that have been reported from the Rapid Burster. The distance to the Bursting Pulsar must be mo re than 2 kpc, and we suggest that it is more than 7 kpc.