The Soft Gamma-Ray Bursts Detected with the Apex Experiment Evidence for a Persistent Sgr-Like Activity
Abstract
Among gamma ray bursters, the Soft Gamma Repeaters (SRGs) constitute a particular class characterized by short periods of intense activity and long quiet periods lasting at least 1 year. The behavior of SGR 1806-21, watched during about 7 years, was studied in detail. The detection, by the Soviet-French Apex experiment, of 6 soft bursts with characteristics identical to SRG repetitions is reported. It is shown that these observations argue in favor of a persistent SRG type activity. The implications of these detections for SRG observations with future missions are considered.
- Publication:
-
Two Topics in X-Ray Astronomy, Volume 1: X Ray Binaries. Volume 2: AGN and the X Ray Background
- Pub Date:
- November 1989
- Bibcode:
- 1989ESASP.296..263A
- Keywords:
-
- Gamma Ray Astronomy;
- Gamma Ray Bursts;
- Stellar Activity;
- Stellar Radiation;
- Emission Spectra;
- French Space Program;
- Neutron Stars;
- Spaceborne Experiments;
- Stellar Oscillations;
- U.S.S.R. Space Program;
- Astronomy