Periodic transient hard X-ray emission from GRO 1849-03.

Details Periodic transient hard X-ray emission from GRO 1849-03. Periodic transient hard X-ray emission from GRO 1849-03.

Dec 1996

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1996a%26as..120c.227z&link_type=abstract

Astronomy and Astrophysics Supplement, v.120, p.227-230

Astronomy and Astrophysics

Astrophysics

14

Stars: Individual: Gro J1849-03, X-Rays: Stars

Scientific paper

We have recently discovered periodic transient hard X-ray emission from a source, GRO 1849-03, possibly located in the 5kpc arm of the galaxy, using archival BATSE data. The source produces hard X-ray outbursts at regular 241-day intervals. Each outburst lasts roughly 13-days, reaching a peak luminosity of 75mCrab. The spectrum extends to at least 100keV with a photon power law index of -2.8. We interpret the emission as due to close encounters between a compact object and a companion star in a binary system.

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