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Optical Behavior of GRB 061121 around its X-Ray Shallow Decay Phase
T. Uehara, M. Uemura, A. Arai +8
Aims. We report on a detailed study of the optical afterglow of GRB 061121 with our original time-series photometric data. In conjunction with X-ray observations, we discuss the or…
Constraints on the Cosmic-Ray Density Gradient beyond the Solar Circle from Fermi gamma-ray Observations of the Third Galactic Quadrant
Fermi LAT Collaboration
We report an analysis of the interstellar -ray emission in the third Galactic quadrant measured by the {Fermi} Large Area Telescope. The window encompassing the Galactic plane f…
Fermi Large Area Telescope Observations of Gamma-ray Pulsars PSR J1057-5226, J1709-4429, and J1952+3252
Fermi LAT Collaboration, A. A. Abdo
The Fermi Large Area Telescope (LAT) data have confirmed the pulsed emission from all six high-confidence gamma-ray pulsars previously known from the EGRET observations. We report…
Fermi LAT observations of the Geminga pulsar
LAT Collaboration, A. A. Abdo
We report on the \textit{Fermi}-LAT observations of the Geminga pulsar, the second brightest non-variable GeV source in the -ray sky and the first example of a radio-quiet -r…
Fermi Large Area Telescope View of the Core of the Radio Galaxy Centaurus A
Fermi Collaboration, A. Falcone, H. Hase +2
We present gamma-ray observations with the LAT on board the Fermi Gamma-Ray Telescope of the nearby radio galaxy Centaurus~A. The previous EGRET detection is confirmed, and the loc…
Fermi Large Area Telescope Constraints on the Gamma-ray Opacity of the Universe
The Fermi LAT, the GBM Collaboration, : +1
The Extragalactic Background Light (EBL) includes photons with wavelengths from ultraviolet to infrared, which are effective at attenuating gamma rays with energy above ~10 GeV dur…
Suzaku Observations of Luminous Quasars: Revealing the Nature of High-Energy Blazar Emission in Quiescent States
LAT Collaboration, A. A. Abdo, F. Tavecchio +5
We present the results from the Suzaku X-ray observations of five flat-spectrum radio quasars (FSRQs), namely PKS0208-512, Q0827+243, PKS1127-145, PKS1510-089 and 3C 454.3. All the…
Gamma-ray Light Curves and Variability of Bright Fermi-Detected Blazars
A. A. Abdo
This paper presents light curves and the first systematic characterization of variability of the 106 objects in the Fermi Large Area Telescope (LAT) Bright AGN Sample (LBAS). Weekl…
A population of gamma-ray emitting globular clusters seen with the Fermi Large Area Telescope
The Fermi LAT collaboration
Globular clusters with their large populations of millisecond pulsars (MSPs) are believed to be potential emitters of high-energy gamma-ray emission. Our goal is to constrain the m…
The First Catalog of Active Galactic Nuclei Detected by the Fermi Large Area Telescope
A. A. Abdo
We present the first catalog of active galactic nuclei (AGN) detected by the LAT, corresponding to 11 months of data collected in scientific operation mode. The First LAT AGN Catal…
The Vela Pulsar: Results from the First Year of Fermi LAT Observations
A. A. Abdo
We report on analysis of timing and spectroscopy of the Vela pulsar using eleven months of observations with the Large Area Telescope on the Fermi Gamma-Ray Space Telescope. The in…
The Spectrum of the Isotropic Diffuse Gamma-Ray Emission Derived From First-Year Fermi Large Area Telescope Data
LAT collaboration
We report on the first Fermi Large Area Telescope (LAT) measurements of the so-called "extra-galactic" diffuse gamma-ray emission (EGB). This component of the diffuse gamma-ray emi…
Observation of Supernova Remnant IC443 with the Fermi Large Area Telescope
A. A. Abdo
We report observation of the supernova remnant IC443 (G189.1+3.0) with the Fermi Gamma-ray Space Telescope Large Area Telescope (LAT) in the energy band between 200MeV and 50GeV. I…
Observations of the Large Magellanic Cloud with Fermi
LAT collaboration, A. A. Abdo
Context: The Large Magellanic Cloud (LMC) is to date the only normal external galaxy that has been detected in high-energy gamma rays. High-energy gamma rays trace particle acceler…
Fermi-LAT discovery of GeV gamma-ray emission from the young supernova remnant Cassiopeia A
A. Abdo
We report on the first detection of GeV high-energy gamma-ray emission from a young supernova remnant with the Large Area Telescope aboard the Fermi Gamma-ray Space Telescope. Thes…
PSR J1907+0602: A Radio-Faint Gamma-Ray Pulsar Powering a Bright TeV Pulsar Wind Nebula
Fermi LAT Collaboration, the Fermi Pulsar Timing Consortium, : +1
We present multiwavelength studies of the 106.6 ms gamma-ray pulsar PSR J1907+06 near the TeV source MGRO J1908+06. Timing observations with Fermi result in a precise position dete…