Gradual Brightening of SGR 1806-20

Details Gradual Brightening of SGR 1806-20 Gradual Brightening of SGR 1806-20

Jul 2004

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2004atel..313....1w&link_type=abstract

The Astronomer's Telegram, #313

Astronomy and Astrophysics

Astronomy

9

Infra-Red, X-Ray, Gamma Ray, Request For Observations, Soft Gamma-Ray Repeaters

Scientific paper

The Soft Gamma Repeater SGR 1806-20 became particularly burst active in May 2004 (GCN 2603, 2604) and has remained active up through the present. Over this interval, both the pulsed X-ray flux as measured with the RXTE/PCA and the phase-averaged X-ray flux as measured with Chandra/ACIS have been 2 to 3 times higher than ever observed since the discovery of the X-ray counterpart in 1993. In the Chandra X-ray data, we detect a thermal component in the X-ray spectrum of SGR 1806-20 for the first time.

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