The BL Lacertae object 3C 66A was detected in a flaring state by the Fe r m i 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. © 2011. The American Astronomical Society.

Abdo, A., Ackermann, M., Ajello, M., Baldini, L., Ballet, J., Barbiellini, G., et al. (2011). Multi-wavelength observations of the flaring gamma-ray blazar 3C 66A in 2008 October. THE ASTROPHYSICAL JOURNAL, 726(1) [10.1088/0004-637X/726/1/43].

Multi-wavelength observations of the flaring gamma-ray blazar 3C 66A in 2008 October

Fumagalli M.;
2011

Abstract

The BL Lacertae object 3C 66A was detected in a flaring state by the Fe r m i 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. © 2011. The American Astronomical Society.
Si
Articolo in rivista - Articolo scientifico
Scientifica
BL Lacertae objects: individual (3C 66A); Galaxies: active; Gamma rays: galaxies;
English
Abdo, A., Ackermann, M., Ajello, M., Baldini, L., Ballet, J., Barbiellini, G., et al. (2011). Multi-wavelength observations of the flaring gamma-ray blazar 3C 66A in 2008 October. THE ASTROPHYSICAL JOURNAL, 726(1) [10.1088/0004-637X/726/1/43].
Abdo, A; Ackermann, M; Ajello, M; Baldini, L; Ballet, J; Barbiellini, G; Bastieri, D; Bechtol, K; Bellazzini, R; Berenji, B; Blandford, R; Bonamente, E; Borgland, A; Bouvier, A; Bregeon, J; Brez, A; Brigida, M; Bruel, P; Buehler, R; Buson, S; Caliandro, G; Cameron, R; Caraveo, P; Carrigan, S; Casandjian, J; Cavazzuti, E; Cecchi, C; Celik, O; Charles, E; Chekhtman, A; Cheung, C; Chiang, J; Ciprini, S; Claus, R; Cohen-Tanugi, J; Conrad, J; Costamante, L; Cutini, S; Davis, D; Dermer, C; De Palma, F; Digel, S; Do Couto E Silva, E; Drell, P; Dubois, R; Dumora, D; Favuzzi, C; Fegan, S; Fortin, P; Frailis, M; Fuhrmann, L; Fukazawa, Y; Funk, S; Fusco, P; Gargano, F; Gasparrini, D; Gehrels, N; Germani, S; Giglietto, N; Giommi, P; Giordano, F; Giroletti, M; Glanzman, T; Godfrey, G; Grenier, I; Grove, J; Guillemot, L; Guiriec, S; Hadasch, D; Hayashida, M; Hays, E; Horan, D; Hughes, R; Itoh, R; Johannesson, G; Johnson, A; Johnson, T; Johnson, W; Kamae, T; Katagiri, H; Kataoka, J; Knodlseder, J; Kuss, M; Lande, J; Latronico, L; Lee, S; Longo, F; Loparco, F; Lott, B; Lovellette, M; Lubrano, P; Makeev, A; Mazziotta, M; Mcenery, J; Mehault, J; Michelson, P; Mizuno, T; Moiseev, A; Monte, C; Monzani, M; Morselli, A; Moskalenko, I; Murgia, S; Nakamori, T; Naumann-Godo, M; Nestoras, I; Nolan, P; Norris, J; Nuss, E; Ohsugi, T; Okumura, A; Omodei, N; Orlando, E; Ormes, J; Ozaki, M; Paneque, D; Panetta, J; Parent, D; Pelassa, V; Pepe, M; Pesce-Rollins, M; Piron, F; Porter, T; Raino, S; Rando, R; Razzano, M; Reimer, A; Reimer, O; Reyes, L; Ripken, J; Ritz, S; Romani, R; Roth, M; Sadrozinski, H; Sanchez, D; Sander, A; Scargle, J; Sgro, C; Shaw, M; Smith, P; Spandre, G; Spinelli, P; Strickman, M; Suson, D; Takahashi, H; Tanaka, T; Thayer, J; Thayer, J; Thompson, D; Tibaldo, L; Torres, D; Tosti, G; Tramacere, A; Usher, T; Vandenbroucke, J; Vasileiou, V; Vilchez, N; Vitale, V; Waite, A; Wang, P; Winer, B; Wood, K; Yang, Z; Ylinen, T; Ziegler, M; Acciari, V; Aliu, E; Arlen, T; Aune, T; Beilicke, M; Benbow, W; Bottcher, M; Boltuch, D; Bradbury, S; Buckley, J; Bugaev, V; Byrum, K; Cannon, A; Cesarini, A; Christiansen, J; Ciupik, L; Cui, W; De La Calle Perez, I; Dickherber, R; Errando, M; Falcone, A; Finley, J; Finnegan, G; Fortson, L; Furniss, A; Galante, N; Gall, D; Gillanders, G; Godambe, S; Grube, J; Guenette, R; Gyuk, G; Hanna, D; Holder, J; Hui, C; Humensky, T; Imran, A; Kaaret, P; Karlsson, N; Kertzman, M; Kieda, D; Konopelko, A; Krawczynski, H; Krennrich, F; Lang, M; Lebohec, S; Maier, G; Mcarthur, S; Mccann, A; Mccutcheon, M; Moriarty, P; Mukherjee, R; Ong, R; Otte, A; Pandel, D; Perkins, J; Pichel, A; Pohl, M; Quinn, J; Ragan, K; Reynolds, P; Roache, E; Rose, H; Schroedter, M; Sembroski, G; Senturk, G; Smith, A; Steele, D; Swordy, S; Tesic, G; Theiling, M; Thibadeau, S; Varlotta, A; Vassiliev, V; Vincent, S; Wakely, S; Ward, J; Weekes, T; Weinstein, A; Weisgarber, T; Williams, D; Wissel, S; Wood, M; Villata, M; Raiteri, C; Gurwell, M; Larionov, V; Kurtanidze, O; Aller, M; Lahteenmaki, A; Chen, W; Berduygin, A; Agudo, I; Aller, H; Arkharov, A; Bach, U; Bachev, R; Beltrame, P; Benitez, E; Buemi, C; Dashti, J; Calcidese, P; Capezzali, D; Carosati, D; Da Rio, D; Di Paola, A; Diltz, C; Dolci, M; Dultzin, D; Forne, E; Gomez, J; Hagen-Thorn, V; Halkola, A; Heidt, J; Hiriart, D; Hovatta, T; Hsiao, H; Jorstad, S; Kimeridze, G; Konstantinova, T; Kopatskaya, E; Koptelova, E; Leto, P; Ligustri, R; Lindfors, E; Lopez, J; Marscher, A; Mommert, M; Mujica, R; Nikolashvili, M; Nilsson, K; Palma, N; Pasanen, M; Roca-Sogorb, M; Ros, J; Roustazadeh, P; Sadun, A; Saino, J; Sigua, L; Sillanaa, A; Sorcia, M; Takalo, L; Tornikoski, M; Trigilio, C; Turchetti, R; Umana, G; Belloni, T; Blake, C; Bloom, J; Angelakis, E; Fumagalli, M; Hauser, M; Prochaska, J; Riquelme, D; Sievers, A; Starr, D; Tagliaferri, G; Ungerechts, H; Wagner, S; Zensus, J
File in questo prodotto:
File Dimensione Formato  
1011.1053.pdf

accesso aperto

Tipologia di allegato: Submitted Version (Pre-print)
Dimensione 938.3 kB
Formato Adobe PDF
938.3 kB Adobe PDF Visualizza/Apri

I documenti in IRIS sono protetti da copyright e tutti i diritti sono riservati, salvo diversa indicazione.

Utilizza questo identificativo per citare o creare un link a questo documento: http://hdl.handle.net/10281/295236
Citazioni
  • Scopus 54
  • ???jsp.display-item.citation.isi??? 59
Social impact