Precise Interplanetary Network Localization of the Bursting Pulsar GRO J1744-28
Abstract
We analyze 426 observations of the bursting pulsar GRO J1744-28 by Ulysses and BATSE. Triangulating each burst, and statistically combining the triangulation annuli, we obtain a 3 sigma error ellipse whose area is 532 sq. arcsec. The accuracy of this statistical method has been independently verified with observations of the soft gamma repeater SGR1900+14. The ellipse is fully contained within the 1 ' radius ASCA error circle of the soft X-ray counterpart, and partially overlaps the 10 " radius ROSAT error circle of a source which may also be the soft X-ray counterpart. A variable source which has been proposed as a possible IR counterpart lies at the edge of the 3 sigma error ellipse, making it unlikely from a purely statistical point of view to be associated with the bursting pulsar.
Keywords
Cite
@article{arxiv.astro-ph/9912506,
title = {Precise Interplanetary Network Localization of the Bursting Pulsar GRO J1744-28},
author = {K. Hurley and C. Kouveliotou and T. Cline and D. Cole and M. C. Miller and A. Harmon and G. Fishman and M. Briggs and J. van Paradijs and J. Kommers and W. Lewin},
journal= {arXiv preprint arXiv:astro-ph/9912506},
year = {2009}
}
Comments
Submitted to the Astrophysical Journal