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Fermi Detection of γ-ray emission from the M2 Soft X-ray Flare on 2010 June 12
Fermi GBM Collaboration, Fermi LAT Collaboration, B. R. Dennis +2
The GOES M2-class solar flare, SOL2010-06-12T00:57, was modest in many respects yet exhibited remarkable acceleration of energetic particles. The flare produced an ~50 s impulsive…
The observation of Gamma Ray Bursts and Terrestrial Gamma-ray Flashes with AGILE
E. Del Monte, G. Barbiellini, F. Fuschino +50
Since its early phases of operation, the AGILE mission is successfully observing Gamma Ray Bursts (GRBs) in the hard X-ray band with the SuperAGILE imager and in the MeV range with…
Simultaneous multi-wavelength campaign on PKS 2005-489 in a high state
The H. E. S. S. Collaboration, the Fermi LAT Collaboration, : +345
The high-frequency peaked BL Lac object PKS 2005-489 was the target of a multi-wavelength campaign with simultaneous observations in the TeV gamma-ray (H.E.S.S.), GeV gamma-ray (Fe…
Fermi-LAT spectral analysis of Fermi, Planck, Swift and radio selected samples of AGN
C. Monte, S. Raino, F. Gargano +4
Blazars are jet-dominated extragalactic objects characterized by the emission of strongly variable non-thermal radiation across the entire electromagnetic spectrum. Therefore, the…
Fermi Large Area Telescope Observations of the Supernova Remnant G8.7-0.1
LAT Collaboration
We present a detailed analysis of the GeV gamma-ray emission toward the supernova remnant (SNR) G8.7-0.1 with the Large Area Telescope (LAT) onboard the \emph{Fermi} Gamma-ray Spac…
The AGILE observations of the hard and bright GRB 100724B
E. Del Monte, G. Barbiellini, I. Donnarumma +49
The observation of Gamma Ray Bursts (GRBs) in the gamma-ray band has been advanced by the AGILE and Fermi satellites after the era of the Compton Gamma-Ray Observatory. AGILE and F…
Search for Gamma-ray Emission from X-ray Selected Seyfert Galaxies with Fermi-LAT
LAT Collaboration
We report on a systematic investigation of the gamma-ray properties of 120 hard X-ray-selected Seyfert galaxies classified as `radio-quiet' objects, utilizing the three-year accumu…
Measurement of separate cosmic-ray electron and positron spectra with the Fermi Large Area Telescope
The Fermi LAT Collaboration, M. Ackermann, M. Ajello +148
We measured separate cosmic-ray electron and positron spectra with the Fermi Large Area Telescope. Because the instrument does not have an onboard magnet, we distinguish the two sp…
Constraining Dark Matter Models from a Combined Analysis of Milky Way Satellites with the Fermi Large Area Telescope
LAT Collaboration, M. Ackermann, M. Ajello +150
Satellite galaxies of the Milky Way are among the most promising targets for dark matter searches in gamma rays. We present a search for dark matter consisting of weakly interactin…
Fermi Large Area Telescope Second Source Catalog
LAT Collaboration
We present the second catalog of high-energy gamma-ray sources detected by the Large Area Telescope (LAT), the primary science instrument on the Fermi Gamma-ray Space Telescope (Fe…
The Second Catalog of Active Galactic Nuclei Detected by the Fermi Large Area Telescope
LAT Collaboration
The second catalog of active galactic nuclei (AGNs) detected by the Fermi Large Area Telescope (LAT) in two years of scientific operation is presented. The Second LAT AGN Catalog (…
A Statistical Approach to Recognizing Source Classes for Unassociated Sources in the First Fermi-LAT Catalog
LAT Collaboration
The Fermi Large Area Telescope First Source Catalog (1FGL) provided spatial, spectral, and temporal properties for a large number of gamma-ray sources using a uniform analysis meth…
Constraints on dark matter models from a Fermi LAT search for high-energy cosmic-ray electrons from the Sun
The Fermi LAT Collaboration
During its first year of data taking, the Large Area Telescope (LAT) onboard the Fermi Gamma-Ray Space Telescope has collected a large sample of high-energy cosmic-ray electrons an…
Fermi-LAT Observations of Markarian 421: the Missing Piece of its Spectral Energy Distribution
LAT collaboration, A. A. Abdo et al., the MAGIC collaboration +4
We report on the gamma-ray activity of the high-synchrotron-peaked BL Lacertae object Mrk 421 during the first 1.5 years of Fermi operation, from 2008 August 5 to 2010 March 12. We…
Detection of High-Energy Gamma-Ray Emission during the X-ray flaring activity in GRB100728A
The Fermi Collaboration, L. Piro
We present the simultaneous Swift and Fermi observations of the bright GRB100728A and its afterglow. The early X-ray emission is dominated by a vigorous flaring activity continuing…
The puzzling temporally variable optical and X-ray afterglow of GRB 101024A
B. Gendre, G. Stratta, M. Laas-Bourezınst +5
Aim: To present the optical observations of the afterglow of GRB 101024A and to try to reconcile these observations with the X-ray afterglow data of GRB 101024A using current after…
Fermi-LAT Observations of Two Gamma-Ray Emission Components from the Quiescent Sun
A. A. Abdo
We report the detection of high-energy gamma rays from the quiescent Sun with the Large Area Telescope (LAT) on board the Fermi Gamma-Ray Space Telescope (Fermi) during the first 1…
Observations of the young supernova remnant RX J1713.7-3946 with the Fermi Large Area Telescope
A. A. Abdo, Fermi LAT Collaboration
We present observations of the young Supernova remnant (SNR) RX J1713.7-3946 with the Fermi Large Area Telescope (LAT). We clearly detect a source positionally coincident with the…
Discovery of High-Energy Gamma-Ray Emission from the Binary System PSR B1259-63/LS 2883 Around Periastron with Fermi
A. A. Abdo, Fermi LAT Collaboration, M. Chernyakova +3
We report on the discovery of \geq 100 MeV γ rays from the binary system PSR B1259-63/LS 2883 using the Large Area Telescope (LAT) on board Fermi. The system comprises a radio puls…
Fermi Gamma-ray Space Telescope Observations of the Gamma-ray Outburst from 3C 454.3 in November 2010
LAT collaboration
The flat-spectrum radio quasar 3C 454.3 underwent an extraordinary 5-day gamma-ray outburst in November 2010 where the daily flux measured with the Fermi Large Area Telescope (LAT)…
The first Fermi multifrequency campaign on BL Lacertae: characterizing the low-activity state of the eponymous blazar
A. A. Abdo
We report on observations of BL Lacertae during the first 18 months of Fermi-LAT science operations and present results from a 48-day multifrequency coordinated campaign from 2008…
Detection of a spectral break in the extra hard component of GRB 090926A
Fermi-LAT, Fermi-GBM collaborations
We report on the observation of the bright, long gamma-ray burst, GRB 090926A, by the Gamma-ray Burst Monitor (GBM) and Large Area Telescope (LAT) instruments on board the \Fermi\…