Detection of Multiple Hard X-ray Flares from Sco X-1 with OSSE

Details Detection of Multiple Hard X-ray Flares from Sco X-1 with OSSE Detection of Multiple Hard X-ray Flares from Sco X-1 with OSSE

Apr 2000

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2000aipc..510..222s&link_type=abstract

THE FIFTH COMPTON SYMPOSIUM. AIP Conference Proceedings, Volume 510, pp. 222-226 (2000).

Computer Science

16

X-Ray Binaries, Stellar Activity, X-Ray

Scientific paper

CGRO/OSSE observations of the bright LMXB Sco X-1 have resulted in the discovery of transient episodes of hard X-ray emission extending to energies above 200 keV. During these periods, the emission spectrum above 80 keV deviates significantly from the extrapolation of the soft thermal spectrum observed at lower X-ray energies. The intervals of hard emission last ~4-days with a duty cycle ~30%. Using RXTE/ASM data from the same intervals to establish the state of Sco X-1 on the color-color diagram ``Z'' is in progress, but preliminary results indicate that the hard X-ray episodes occur over a limited range of mass accretion rates. .

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