Astronomy and Astrophysics – Astronomy
Scientific paper
Aug 2003
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2003atel..185....1s&link_type=abstract
The Astronomer's Telegram, #185
Astronomy and Astrophysics
Astronomy
X-Ray, Gamma Ray, Request For Observations, Black Holes
Scientific paper
The black-hole candidate GRS1758-258 was observed with IBIS/INTEGRAL on Aug 24-29, 2003. Comparison with results of previous observations of this source with GRANAT/SIGMA, RXTE, CGRO, BeppoSAX shows that current source flux in hard X-rays is close to its maximum observed in 1990 and 1997. The averaged fluxes are equal to ~65, 80 and 115 mCrab in the 25-50, 50-100, 100-150 keV energy bands, respectively.
Lutovinov Alexander A.
Molkov Sergei
Sunyaev Rachid
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