Results 81 to 90 of about 26,003 (179)
Pulsar Timing with the Parkes Radio Telescope for the Fermi Mission
, 2009 We report here on two years of timing of 168 pulsars using the Parkes radio telescope. The vast majority of these pulsars have spin-down luminosities in excess of 10^34 erg/s and are prime target candidates to be detected in gamma-rays by the Fermi Gamma-
A. Possenti +22 more
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Universe, 2022 The blazar PKS 0208-512 was in the lowest γ-ray brightness state during the initial 10 years of observations with the Fermi Gamma-ray Space Telescope (Fermi), which was an order of magnitude lower than its flux state during the EGRET era (1991–2000). The
Krishna Mohana Ammenadka +4 more
doaj +1 more source
The Statistical Analysis of GeV Spectral Breaks in Bright Gamma-Ray Flat-spectrum Radio Quasars
The Astrophysical Journal Supplement SeriesWe present the statistical results of GeV spectral breaks of bright gamma-ray flat-spectrum radio quasars (FSRQs) in the energy range of 0.1–10 GeV based on New Pass 8 data of the Large Area Telescope on board Fermi Gamma-Ray Space Telescope.
K. R. Zhu, J. M. Chen, L. Zhang
doaj +1 more source
Gamma Ray Bursts and the Fermi Gamma Ray Space Telescope: Notes to the La Plata Lectures
, 2008 33 pages; notes to a series of 5 one-hour lectures given at the First La Plata School in Astrophysics and Geophysics, La Plata, Argentina, March 10 - 14 ...
Dermer, Charles D., Fryer, Chris L.
openaire +2 more sources
Fermi-LAT upper limits on gamma-ray emission from colliding wind binaries
, 2012 Context: Colliding wind binaries (CWBs) are thought to give rise to a plethora of physical processes including acceleration and interaction of relativistic particles. Observation of synchrotron radiation in the radio band confirms there is a relativistic
Egberts, K. +3 more
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SU(2)X vector DM and Galactic Center gamma-ray excess
Physics Letters B, 2015 An unbroken Z3 symmetry remains when a local SU(2)X symmetry is broken spontaneously by a quadruplet. The gauge boson χμ(χ¯μ) carries the dark charge and is the candidate of dark matter (DM).
Chuan-Hung Chen, Takaaki Nomura
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Identification of the Early Fermi LAT Gamma-Ray Bright Objects with Extragalactic VLBI sources
, 2009 A list of 205 gamma-ray strong objects was reported recently as a result of a 3-month integration with the Large Area Telescope on board the Fermi Gamma-Ray Space Telescope.
Abdo +33 more
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The Astrophysical Journal, 2023 Motivated by the recent discovery of a low-surface-brightness diffuse emission, a supernova remnant (SNR) candidate, surrounding the young pulsar PSR J0837–2454, we carry out a likelihood analysis of the γ -ray data obtained by the Fermi Gamma-ray Space ...
Pengfei Zhang, Yuliang Xin
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Fermi gamma-ray space telescope: Science highlights for the first 8 months [PDF]
Nuclear Instruments and Methods in Physics Research Section A: Accelerators, Spectrometers, Detectors and Associated Equipment, 2011 The Fermi Gamma-ray Space Telescope was launched on June 11, 2008 and since August 2008 has successfully been conducting routine science observations of high energy phenomena in the gamma-ray sky. A number of exciting discoveries have been made during its first year of operation, including blazar flares, high-energy gamma-ray bursts, and numerous new ...
openaire +2 more sources
Fermi-LAT Detection of a Break in the Gamma-Ray Spectrum of the Supernova Remnant Cassiopeia A
, 2013 We report on observations of the supernova remnant Cassiopeia A in the energy range from 100 MeV to 100 GeV using 44 months of observations from the Large Area Telescope on board the Fermi Gamma-ray Space Telescope.
, +7 more
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