Results 41 to 50 of about 610,854 (344)

BL Lacertae Objects and the Extragalactic Gamma-Ray Background

, 2011
A tight correlation between gamma-ray and radio emission is found for a sample of BL Lacertae (BL Lac) objects detected by Fermi Gamma-ray Space Telescope (Fermi) and the Energetic Gamma-Ray Experiment Telescope (EGRET).
Abdo, Abdo, Atwood, Bai, Cao, Chiang, Dermer, Dermer, Dodson, Dondi, Fan, Fan, Fan, Fan Li, Gear, Georganopoulos, Ghisellini, Giroletti, Gu, Hartman, Helmboldt, Horiuchi, Kataoka, Komossa, Kovalev, Liu, Mattox, Michelson, Narumoto, Padovani, Padovani, Sreekumar, Strong, Thompson, Wang, Xin-Wu Cao, Yuan, Zhang, Zhou, Zhou   +39 more
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Outliers in Spectral Time Lag-Selected Gamma Ray Bursts

Universe, 2022
It is possible that astrophysical samples are polluted by some outliers, which might belong to a different sub-class. By removing the outliers, the underlying statistical features may be revealed.
Fei-Fei Wang, Yuan-Chuan Zou
doaj   +1 more source

Gamma Rays from Star Formation in Clusters of Galaxies

, 2012
Star formation in galaxies is observed to be associated with gamma-ray emission. The detection of gamma rays from star-forming galaxies by the Fermi Large Area Telescope (LAT) has allowed the determination of a functional relationship between star ...
Abdo, Ackermann, Ackermann, Bai, Book, Chung, Chung, Clarke, Dale, Egami, Emma M. Storm, Han, McDonald, Miller, Reddy, Reiprich, Rieke, Stefano Profumo, Tesla E. Jeltema, Voelk, Yun   +20 more
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COMPTEL observations of cosmic gamma‐ray bursts [PDF]

, 1991
The imaging γ‐ray telescope COMPTEL on board NASA’s Compton Gamma‐Ray Observatory (GRO) has observed many cosmic gamma‐ray bursts during the early mission phase of GRO. COMPTEL records time‐resolved burst spectra over 0.1 MeV to 10 MeV energies, and, for
Bennett, K, Bloemen, H, Busetta, M, Collmar, W, Connors, A, de Vries, C, deBoer, H, den Herder, J W, Diehl, R, Hanlon, L O, Hermsen, W, Kippen, R M, Kuiper, L, Lichti, G G, Lockwood, J, McConnell, Mark L, Morris, D, Ryan, James M., Schonfelder, V, Stacy, G, Steinle, H, Strong, A W, Swanenburg, B, Taylor, B G, Varendorff, M, Williams, O R, Winkler, C   +26 more
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Fermi LAT measurements of diffuse gamma-ray emission: results at the first-year milestone

, 2010
For more than one year the Fermi Large Area Telescope has been surveying the gamma-ray sky from 20 MeV to more than 300 GeV with unprecedented statistics and angular resolution.
Tibaldo, Luigi
core   +1 more source

GAMMA-RAY OBSERVATIONS OF GAMMA-RAY BINARIES

International Journal of Modern Physics: Conference Series, 2014
Gamma-ray binaries are binary systems that emit most of their radiative output above 1 MeV. Following the detection of five such systems in the past decade, they have been clearly established as a population of galactic GeV and TeV sources. In this review I discuss their recent gamma-ray observational results from Cherenkov telescopes and the Fermi ...
openaire   +2 more sources

Probing Orbital Parameters of Gamma-Ray Binaries with TeV Light Curves

The Astrophysical Journal, 2023
Gamma-ray binaries are binary systems in which the energy flux peaks in the gamma-ray energy band. They harbor a compact object (a neutron star or a black hole) orbiting around a massive star, which provides a strong radiation field.
Iurii Sushch, Brian van Soelen
doaj   +1 more source

A Roadmap to Gamma-Ray Bursts: New Developments and Applications to Cosmology

Galaxies, 2021
Gamma-ray bursts are the most powerful explosions in the universe and are mainly placed at very large redshifts, up to z≃9. In this short review, we first discuss gamma-ray burst classification and morphological properties.
Orlando Luongo, Marco Muccino
doaj   +1 more source

Gamma ray effects on flash memory cell arrays [PDF]

Nuclear Technology and Radiation Protection, 2012
Information stored in flash memories is physically represented by the absence or presence of charge on electrically isolated floating gates. Interaction of gamma rays with the insulators surrounding the floating gate produces effects that degrade the ...
Dolićanin Edin Ć.
doaj   +1 more source

Contribution of the Gamma-ray Loud Radio Galaxies Core Emissions to the Cosmic MeV and GeV Gamma-Ray Background Radiation

, 2011
The Fermi gamma-ray satellite has recently detected gamma-ray emissions from radio galaxy cores. From these samples, we first examine the correlation between the luminosities at 5 GHz, L_{5GHz}, and at 0.1-10 GeV, L_{gamma}, of these gamma-ray loud radio
Abdo, Abdo, Abdo, Abdo, Abdo, Abdo, Abdo, Abdo, Abdo, Ajello, Ajello, Atwood, Bennett, Bergström, Bhattacharya, Bhattacharya, Boggs, Burgess, Burgess, Chiang, Dai, Dermer, Dondi, Dunlop, Ekers, Fanaroff, Faucher-Giguère, Fields, Finke, Gruber, Hartman, Hopkins, Horiuchi, Inoue, Inoue, Inoue, Inoue, Kappadath, Kataoka, Kendall, Keshet, Kubo, Laing, Makiya, Massaro, Morganti, Muecke, Murase, Narumoto, Oda, Padovani, Padovani, Pavlidou, Pavlidou, Press, Razzaque, Razzaque, Rybicki, Saikia, Salamon, Siegal-Gaskins, Sreekumar, Stawarz, Stecker, Stecker, Strigari, Strong, Thompson, Thompson, Totani, Totani, Ueda, Unger, Venters, Wang, Watanabe, Watanabe, Yoshiyuki Inoue, Zdziarski, Zhang   +79 more
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