A periodic variable X-ray counterpart to SGR 0525-66?

Details A periodic variable X-ray counterpart to SGR 0525-66? A periodic variable X-ray counterpart to SGR 0525-66?

Aug 1996

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1996aipc..384..931d&link_type=abstract

Gamma-ray bursts: 3rd Huntsville symposium. AIP Conference Proceedings, Volume 384, pp. 931-935 (1996).

Physics

X-Ray Sources, X-Ray Bursts, Gamma-Ray Sources, Gamma-Ray Bursts

Scientific paper

The Soft Gamma Repeater, SGR 0525-66 is famous for the extremely bright burst it emitted on 5 March 1979. Its very tight error box coincides with the supernova remnant N49 in the LMC. An earlier analysis of the SGR events hinted to a 164 day periodicity. A persistent X-ray source was detected within the error box with the Einstein HRI. Recently our reanalysis of archival ROSAT HRI observations indicates that a previously unnoticed variable X-ray point source is detected close to the persistent source. A program to monitor N49 with 12 observations of 10ks each over one year with ROSAT has been accepted for the current observing interval (AO6). We present the currently available X-ray data and briefly outline some possible implications of a periodically variable counterpart.

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