4U 1630-47 Enters a Bright X-Ray Flaring State

Details 4U 1630-47 Enters a Bright X-Ray Flaring State 4U 1630-47 Enters a Bright X-Ray Flaring State

May 2003

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2003atel..161....1t&link_type=abstract

The Astronomer's Telegram, #161

Astronomy and Astrophysics

Astronomy

1

X-Ray, Black Holes, Transients

Scientific paper

The black hole candidate X-ray transient 4U 1630-47 is currently undergoing an extended outburst that began in 2002 September (see ATELs #106, #108, and #109) and has now persisted for nearly 260 days. Over the past 10 days (MJD 52,776-52,786), the source brightened from 20 c/s to over 40 c/s in the Rossi X-ray Timing Explorer ASM, and the 1.5-12 keV flux is currently near 2E-8 erg cm^-2 s^-1. As the flux increased, our RXTE/PCA observations indicate that the X-ray (3-60 keV) variability on ~10-100 second time scales increased significantly.

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