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We report the first blazar detection by the AGILE satellite. AGILE detected 3C 454.3 during a period of strongly enhanced optical emission in July 2007. AGILE observed the source with a dedicated repointing during the period 2007 July 24-30…

We report on the extreme gamma-ray activity from the FSRQ PKS 1510-089 observed by AGILE in March 2009. In the same period a radio-to-optical monitoring of the source was provided by the GASP-WEBT and REM. Moreover, several Swift ToO…

高能天体物理现象 · 物理学 2011-06-16 F. D'Ammando , C. M. Raiteri , M. Villata , P. Romano , G. Pucella , H. A. Krimm , S. Covino , M. Orienti , G. Giovannini , S. Vercellone , E. Pian , I. Donnarumma , V. Vittorini , M. Tavani , A. Argan , G. Barbiellini , F. Boffelli , A. Bulgarelli , P. Caraveo , P. W. Cattaneo , A. W. Chen , V. Cocco , E. Costa , E. Del Monte , G. De Paris , G. Di Cocco , Y. Evangelista , M. Feroci , A. Ferrari , M. Fiorini , T. Froysland , M. Frutti , F. Fuschino , M. Galli , F. Gianotti , A. Giuliani , C. Labanti , I. Lapshov , F. Lazzarotto , P. Lipari , F. Longo , M. Marisaldi , S. Mereghetti , A. Morselli , L. Pacciani , A. Pellizzoni , F. Perotti , G. Piano , P. Picozza , M. Pilia , G. Porrovecchio , M. Prest , M. Rapisarda , A. Rappoldi , A. Rubini , S. Sabatini , P. Soffitta , E. Striani , M. Trifoglio , A. Trois , E. Vallazza , A. Zambra , D. Zanello , I. Agudo , H. D. Aller , M. F. Aller , A. A. Arkharov , U. Bach , E. Benitez , A. Berdyugin , D. A. Blinov , C. S. Buemi , W. P. Chen , A. Di Paola , M. Dolci , E. Forne , L. Fuhrmann , J. L. Gomez , M. A. Gurwell , B. Jordan , S. G. Jorstad , J. Heidt , D. Hiriart , T. Hovatta , H. Y. Hsiao , G. Kimeridze , T. S. Konstantinova , E. N. Kopatskaya , E. Koptelova , O. M. Kurtanidze , S. O. Kurtanidze , V. M. Larionov , A. Lahteenmaki , P. Leto , E. Lindfors , A. P. Marscher , B. McBreen , I. M. McHardy , D. A. Morozova , K. Nilsson , M. Pasanen , M. Roca-Sogorb , A. Sillanpaa , L. O. Takalo , M. Tornikoski , C. Trigilio , I. S. Troitsky , G. Umana , L. A. Antonelli , S. Colafrancesco , C. Pittori , P. Santolamazza , F. Verrecchia , P. Giommi , L. Salotti

We report the detection by the AGILE satellite of a rapid gamma-ray flare from the powerful gamma-ray quasar PKS 1510-089, during a pointing centered on the Galactic Center region from 1 March to 30 March 2008. This source has been…

高能天体物理现象 · 物理学 2014-11-20 F. D'Ammando , G. Pucella , C. M. Raiteri , M. Villata , V. Vittorini , S. Vercellone , I. Donnarumma , F. Longo , M. Tavani , A. Argan , G. Barbiellini , F. Boffelli , A. Bulgarelli , P. Caraveo , P. W. Cattaneo , A. W. Chen , V. Cocco , E. Costa , E. Del Monte , G. De Paris , G. Di Cocco , Y. Evangelista , M. Feroci , A. Ferrari , M. Fiorini , T. Froysland , F. Fuschino , M. Galli , F. Gianotti , A. Giuliani , C. Labanti , I. Lapshov , F. Lazzarotto , P. Lipari , M. Marisaldi , S. Mereghetti , A. Morselli , L. Pacciani , A. Pellizzoni , F. Perotti , G. Piano , P. Picozza , M. Pilia , M. Prest , M. Rapisarda , A. Rappoldi , S. Sabatini , P. Soffitta , M. Trifoglio , A. Trois , E. Vallazza , A. Zambra , D. Zanello , I. Agudo , M. F. Aller , H. D. Aller , A. A. Arkharov , U. Bach , E. Benitez , A. Berdyugin , D. A. Blinov , C. S. Buemi , W. P. Chen , A. Di Paola , G. Di Rico , D. Dultzin , L. Fuhrmann , J. L. Gomez , M. A. Gurwell , S. G. Jorstad , J. Heidt , D. Hiriart , H. Y. Hsiao , G. Kimeridze , T. S. Konstantinova , E. N. Kopatskaya , E. Koptelova , O. Kurtanidze , V. M. Larionov , P. Leto , E. Lindfors , J. M. Lopez , A. P. Marscher , I. M. McHardy , D. A. Melnichuk , M. Mommert , R. Mujica , K. Nilsson , M. Pasanen , M. Roca-Sogorb , M. Sorcia , L. O. Takalo , B. Taylor , C. Trigilio , I. S. Troitsky , G. Umana , L. A. Antonelli , S. Colafrancesco , S. Cutini , D. Gasparrini , C. Pittori , B. Preger , P. Santolamazza , F. Verrecchia , P. Giommi , L. Salotti

We present the results of a series of optical, UV, X-ray and gamma-ray observations of the BL Lac object S50716+714 carried out by the Swift and AGILE satellites in late 2007 when this blazar was flaring close to its historical maximum at…

BL Lac objects of the intermediate subclass (IBLs) are known to emit a substantial fraction of their power in the energy range 0.1--10 GeV. Detecting gamma-ray emission from such sources provides therefore a direct probe of the emission…

Since the CGRO operation in 1991-2000, one of the primary unresolved questions about the blazar gamma-ray emission has been its possible correlation with the low-energy (in particular optical) emission. To help answer this problem, the…

During the first 3 years of operation the Gamma-Ray Imaging Detector onboard the AGILE satellite detected several blazars in a high gamma-ray activity: 3C 279, 3C 454.3, PKS 1510-089, S5 0716+714, 3C 273, W Comae, Mrk 421, PKS 0537-441 and…

Since its launch in April 2007, the AGILE satellite detected with its Gamma-Ray Imaging Detector (GRID) several blazars at high significance: 3C 279, 3C 454.3, PKS 1510-089, S5 0716+714, 3C 273, W Comae, Mrk 421 and PKS 0537-441. Moreover,…

Thanks to the wide field of view of its gamma-ray imager, the AGILE satellite obtained a long term monitoring of the brightest blazars in the sky and during the first 3 years of operation detected several blazars in a high gamma-ray state:…

高能天体物理现象 · 物理学 2019-08-14 Filippo D'Ammando

During the first two years of observation, AGILE detected several blazars at high significance: 3C 279, 3C 454.3, PKS 1510-089, S5 0716+714, 3C 273, W Comae, Mrk 421 and PKS 0537-441. We obtained long-term coverage of 3C 454.3, for a total…

We report the results of an extensive search in the AGILE data for a gamma-ray counterpart of the LIGO gravitational wave event GW150914. Currently in spinning mode, AGILE has the potential of covering with its gamma-ray instrument 80 % of…

The AGILE gamma-ray satellite provides large sky exposure levels ($\geq 10^9$ cm$^2$ s per year on the Galactic Plane) with sensitivity peaking at $E\sim$100 MeV where the bulk of pulsar energy output is typically released. Its $\sim$1…

高能天体物理现象 · 物理学 2019-08-14 Maura Pilia , Alberto Pellizzoni

We report on 18 months of multiwavelength observations of the blazar 3C 454.3 (Crazy Diamond) carried out in July 2007-January 2009. We show the results of the AGILE campaigns which took place on May-June 2008, July-August 2008, and October…

高能天体物理现象 · 物理学 2015-05-18 S. Vercellone , F. D'Ammando , V. Vittorini , I. Donnarumma , G. Pucella , M. Tavani , A. Ferrari , C. M. Raiteri , M. Villata , P. Romano , H. Krimm , A. Tiengo , A. W. Chen , G. Giovannini , T. Venturi , M. Giroletti , Y. Y. Kovalev , K. Sokolovsky , A. B. Pushkarev , M. L. Lister , A. Argan , G. Barbiellini , A. Bulgarelli , P. Caraveo , P. W. Cattaneo , V. Cocco , E. Costa , E. Del Monte , G. De Paris , G. Di Cocco , Y. Evangelista , M. Feroci , M. Fiorini , F. Fornari , T. Froysland , F. Fuschino , M. Galli , F. Gianotti , C. Labanti , I. Lapshov , F. Lazzarotto , P. Lipari , F. Longo , A. Giuliani , M. Marisaldi , S. Mereghetti , A. Morselli , A. Pellizzoni , L. Pacciani , F. Perotti , G. Piano , P. Picozza , M. Pilia , M. Prest , M. Rapisarda , A. Rappoldi , S. Sabatini , P. Soffitta , E. Striani , M. Trifoglio , A. Trois , E. Vallazza , A. Zambra , D. Zanello , C. Pittori , F. Verrecchia , P. Santolamazza , P. Giommi , S. Colafrancesco , L. Salotti , I. Agudo , H. D. Aller , M. F. Aller , A. A. Arkharov , U. Bach , R. Bachev , P. Beltrame , E. Benitez , M. Boettcher , C. S. Buemi , P. Calcidese , D. Capezzali , D. Carosati , W. P. Chen , D. Da Rio , A. Di Paola , M. Dolci , D. Dultzin , E. Forne , J. L. Gomez , M. A. Gurwell , V. A. Hagen-Thorn , A. Halkola , J. Heidt , D. Hiriart , T. Hovatta , H. Y. Hsiao , S. G. Jorstad , G. Kimeridze , T. S. Konstantinova , E. N. Kopatskaya , E. Koptelova , O. Kurtanidze , A. Lahteenmaki , V. M. Larionov , P. Leto , R. Ligustri , E. Lindfors , J. M. Lopez , A. P. Marscher , R. Mujica , M. Nikolashvili , K. Nilsson

The quasar-type blazar 3C 454.3 underwent a phase of high activity in summer and autumn 2007, which was intensively monitored in the radio-to-optical bands by the Whole Earth Blazar Telescope (WEBT). The gamma-ray satellite AGILE detected…

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