MULTI-WAVELENGTH OBSERVATIONS OF THE FLARING GAMMA-RAY BLAZAR 3C 66A IN 2008 OCTOBER

Abdo, A A; Ackermann, M; Ajello, M; Bechtol, K; Berenji, B; Blandford, R D; Borgland, A W; Bouvier, A; Buehler, R; Baldini, L; Bellazzini, R; Bregeon, J; Brez, A; Ballet, J; Barbiellini, G; Bastieri, D; Buson, S; Bonamente, E; Brigida, M; Bruel, P

doi:10.1088/0004-637X/726/1/43

MULTI-WAVELENGTH OBSERVATIONS OF THE FLARING GAMMA-RAY BLAZAR 3C 66A IN 2008 OCTOBER

Journal Article · Sat Jan 01 04:00:00 EST 2011 · Astrophysical Journal

DOI:https://doi.org/10.1088/0004-637X/726/1/43· OSTI ID:21567511

Abdo, A A ^[1]; Ackermann, M; Ajello, M; Bechtol, K; Berenji, B; Blandford, R D; Borgland, A W; Bouvier, A; Buehler, R ^[2]; Baldini, L; Bellazzini, R; Bregeon, J; Brez, A ^[3]; Ballet, J ^[4]; Barbiellini, G ^[5]; Bastieri, D; Buson, S ^[6]; Bonamente, E ^[7]; Brigida, M ^[8]; Bruel, P ^[9]

Space Science Division, Naval Research Laboratory, Washington, DC 20375 (United States)
W. W. Hansen Experimental Physics Laboratory, Kavli Institute for Particle Astrophysics and Cosmology, Department of Physics and SLAC National Accelerator Laboratory, Stanford University, Stanford, CA 94305 (United States)
Istituto Nazionale di Fisica Nucleare, Sezione di Pisa, I-56127 Pisa (Italy)
Laboratoire AIM, CEA-IRFU/CNRS/Universite Paris Diderot, Service d'Astrophysique, CEA Saclay, F-91191 Gif sur Yvette (France)
Istituto Nazionale di Fisica Nucleare, Sezione di Trieste, I-34127 Trieste (Italy)
Istituto Nazionale di Fisica Nucleare, Sezione di Padova, I-35131 Padova (Italy)
Istituto Nazionale di Fisica Nucleare, Sezione di Perugia, I-06123 Perugia (Italy)
Dipartimento di Fisica 'M. Merlin' dell'Universita e del Politecnico di Bari, I-70126 Bari (Italy)
Laboratoire Leprince-Ringuet, Ecole polytechnique, CNRS/IN2P3, Palaiseau (France)

The BL Lacertae object 3C 66A was detected in a flaring state by the Fermi Large Area Telescope (LAT) and VERITAS in 2008 October. In addition to these gamma-ray observations, F-GAMMA, GASP-WEBT, PAIRITEL, MDM, ATOM, Swift, and Chandra provided radio to X-ray coverage. The available light curves show variability and, in particular, correlated flares are observed in the optical and Fermi-LAT gamma-ray band. The resulting spectral energy distribution can be well fitted using standard leptonic models with and without an external radiation field for inverse Compton scattering. It is found, however, that only the model with an external radiation field can accommodate the intra-night variability observed at optical wavelengths.

OSTI ID:: 21567511

Journal Information:: Astrophysical Journal, Journal Name: Astrophysical Journal Journal Issue: 1 Vol. 726; ISSN ASJOAB; ISSN 0004-637X

Country of Publication:: United States

Language:: English

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