Astronomy and Astrophysics – Astronomy
Scientific paper
Sep 1998
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1998atel...37....1r&link_type=abstract
The Astronomer's Telegram, #37
Astronomy and Astrophysics
Astronomy
1
X-Ray, Binaries, Transients
Scientific paper
The black hole candidate (BHC) X-ray transient XTE J1550-564 (IAUC #7008) continues to brighten in X-rays, according to RXTE All-Sky Monitor (ASM; 2-12 keV) observations, and at the time of this posting has reached 6.8 Crab (513 +/- 10 cts/sec) in its brightest 90-second ASM dwell. A total of 113 ASM dwells on the source between 7.0 Sep and 13.0 Sep 1998 (UT) show the X-ray intensity increased at an average rate of 0.23 +/-0.002 Crab/day (1 Crab=75.5 ASM c/s), up to 1.45+/-0.14 Crab, with little (<5%) variability about this linear rise.
Fox Daniel
Rutledge Robert
Smith Alastair D.
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