Enhanced gamma-ray activity from Eta Carinae
Abstract
AGILE is detecting gamma-ray emission above 100 MeV from a source positionally consistent with the colliding wind binary Eta Carinae. Integrating from 2019-11-26 UT 00:00:00 to 2019-11-28 UT 12:00:00 (MJD: 58813.0 - 58815.5), a preliminary multi-source likelihood analysis yields a detection at coordinates (l, b) = (288.3, -0.7) +/- 0.7 deg (99% C.L. stat.) +/- 0.1 deg (syst.), with a significance above 4 sigma and a gamma-ray flux F( > 100 MeV) = (2.2 +/- 0.8) x 10^-6 photons/cm^2/s.
- Publication:
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The Astronomer's Telegram
- Pub Date:
- December 2019
- Bibcode:
- 2019ATel13329....1P
- Keywords:
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- Binary