AGILE detection of the blazar Mrk 421
Abstract
The AGILE Gamma Ray Imaging Detector (GRID) detected Mrk 421 in the period between 2008-06-09 17:02 UT and 2008-06-15 02:17 UT during a Target of Opportunity (ToO) re-pointing towards W Comae. A preliminary maximum likelihood analysis shows a detection at a significance level of about 4 sigma, at energies above 100 MeV. During the AGILE ToO, the Super- AGILE hard X-ray monitor detected Mrk 421 in a relatively high-state, with a source flux of about 40 mCrab, in the energy range 18-60 keV (see Costa et al., ATEL #1574).
- Publication:
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The Astronomer's Telegram
- Pub Date:
- June 2008
- Bibcode:
- 2008ATel.1583....1P
- Keywords:
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- Gamma Ray;
- AGN;
- Quasars