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VERITAS Observations of day-scale flaring of M87 in 2010 April
E. Aliu, T. Arlen, T. Aune +88
VERITAS has been monitoring the very-high-energy (VHE; >100GeV) gamma-ray activity of the radio galaxy M87 since 2007. During 2008, flaring activity on a timescale of a few days wa…
VERITAS Collaboration Contributions to the 32nd International Cosmic Ray Conference
The VERITAS Collaboration, E. Aliu, T. Arlen +96
Compilation of papers contributed by the VERITAS Collaboration to the 32nd International Cosmic Ray Conference, held 11-18 August 2011 in Beijing, China.
Multiwavelength Observations of the Previously Unidentified Blazar RX J0648.7+1516
E. Aliu, T. Aune, M. Beilicke +84
We report on the VERITAS discovery of very-high-energy (VHE) gamma- ray emission above 200 GeV from the high-frequency-peaked BL Lac object RXJ0648.7+1516 (GBJ0648+1516), associate…
The 2010 very high energy gamma-ray flare & 10 years of multi-wavelength observations of M 87
The H. E. S. S. Collaboration, :, A. Abramowski +442
Abridged: The giant radio galaxy M 87 with its proximity, famous jet, and very massive black hole provides a unique opportunity to investigate the origin of very high energy (VHE;…
Prospects of GRB observations for CTA from a phenomenological model
Aurelien Bouvier, Rudy Gilmore, Valerie Connaughton +3
Very high energy (VHE, i.e. GeV) photons from Gamma-Ray Bursts (GRBs), as high as 90 GeV in rest frame energy, have been detected by the Large Area Telescope (…
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…
Detection of Pulsed Gamma Rays Above 100 GeV from the Crab Pulsar
VERITAS Collaboration, E. Aliu, T. Arlen +93
We report the detection of pulsed gamma rays from the Crab pulsar at energies above 100 Gigaelectronvolts (GeV) with the VERITAS array of atmospheric Cherenkov telescopes. The dete…
The radio/gamma-ray connection in Active Galactic Nuclei in the era of the Fermi Large Area Telescope
M. Ackermann, M. Ajello, A. Allafort +144
We present a detailed statistical analysis of the correlation between radio and gamma-ray emission of the Active Galactic Nuclei (AGN) detected by Fermi during its first year of op…
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…
VERITAS Observations of the Unusual Extragalactic Transient Swift J164449.3+573451
E. Aliu, T. Arlen, T. Aune +79
We report on very-high-energy (100 GeV) gamma-ray observations of Swift J164449.3+573451, an unusual transient object first detected by the {\it Swift} Observatory and later det…
Fermi Large Area Telescope Observations of the Active Galaxy 4C +55.17: Steady, Hard Gamma-Ray Emission and its Implications
W. McConville, L. Ostorero, R. Moderski +14
We report Fermi/LAT observations and broad-band spectral modeling of the radio-loud active galaxy 4C +55.17 (z=0.896), formally classified as a flat-spectrum radio quasar. Using 19…
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…
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…
Catching GRBs with atmospheric Cherenkov telescopes
Rudy C. Gilmore, Joel R. Primack, Aurelien Bouvier +1
Fermi has shown GRBs to be a source of >10 GeV photons. We present an estimate of the detection rate of GRBs with a next generation Cherenkov telescope. Our predictions are based o…
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)…
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\…