AGILE detection of a gamma-ray flare from the blazar 4C+21.35 (PKS 1222+21)

Details AGILE detection of a gamma-ray flare from the blazar 4C+21.35 (PKS 1222+21) AGILE detection of a gamma-ray flare from the blazar 4C+21.35 (PKS 1222+21)

Jun 2010

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2010atel.2686....1s&link_type=abstract

The Astronomer's Telegram, #2686

Astronomy and Astrophysics

Astronomy

2

Gamma Ray, >Gev, Vhe, Request For Observations, Agn, Blazars, Quasars

Scientific paper

AGILE is detecting intense gamma-ray emission above 100 MeV from a source consistent with the Flat Spectrum Radio Quasar PKS 1222+21 (R.A.=186.2, Dec.=21.4). Integrating from 2010-06-17 09:20 UT to 2010-05-19 09:30 UT, a maximum likelihood analysis yields a detection at a significance level of about 9 sigma, and a flux F = (6.5+/-1.3) 10-6 ph/cm2/s (E > 100 MeV), which correspond to an increase of about a factor of 2 with respect to the previous 48 hours.

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