Black-Hole Candidate 1E 1740.7-2942 Enters a Faint Soft State

Details Black-Hole Candidate 1E 1740.7-2942 Enters a Faint Soft State Black-Hole Candidate 1E 1740.7-2942 Enters a Faint Soft State

May 2002

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2002atel...94....1s&link_type=abstract

The Astronomer's Telegram, #94

Other

3

X-Ray, Gamma Ray, Binaries, Black Holes

Scientific paper

Frequent x-ray monitoring of the black-hole candidate 1E 1740.7-2942 near the Galactic Center with the Proportional Counter Array (PCA) on RXTE shows that it has faded and softened dramatically over the last month, entering a state similar to that shown by the only other persistently active "microquasar" in the Galactic bulge, GRS 1758-258, last year (ATEL #66; also Smith et al. 2001, ApJ 554, L41).

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