Results 61 to 70 of about 4,991,129 (370)

GeV Analysis of Mixed Morphology Supernova Remnants Interacting with Molecular Clouds [PDF]

open access: yes, 2012
The first remnants detected by the Fermi Gamma-ray Space Telescope were of the type of mixed-morphology supernova remnants interacting with molecular clouds.
Ercan, E. Nihal, Ergin, Tülün
core   +2 more sources

GAMMA-RAY BURSTS [PDF]

open access: yesParticles, Strings and Cosmology (PASCOS 99), 2000
Ultra-high-energy, >10^19 eV, cosmic-ray and high energy, ~10^14 eV, neutrino production in GRBs is discussed in the light of recent GRB and cosmic-ray observations. Emphasis is put on model predictions that can be tested with operating and planned cosmic-ray and neutrino detectors, and on the prospects of testing for neutrino properties.
openaire   +4 more sources

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

open access: yesThe 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

BL Lacertae Objects and the Extragalactic Gamma-Ray Background

open access: yes, 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   +39 more
core   +1 more source

The Gamma‐Ray Observatory [PDF]

open access: yesAnnals of the New York Academy of Sciences, 1989
AbstractThe Gamma-Ray Observatory (GRO), a Shuttle-launched free-flying Observatory is currently scheduled for launch in November 1990. The mission provides nearly six orders of magnitude in spectral coverage, from about 50 KeV to about 30 GeV, with a sensitivity over the entire range over an order of magnitude greater than that of previous ...
openaire   +3 more sources

Indirect detection of neutralino dark matter candidates in anomaly-mediated supersymmetry breaking scenarios [PDF]

open access: yes, 2001
We consider a model for neutralino dark matter candidates arising in anomaly-mediated supersymmetry breaking schemes, and examine its testability through the search for exotic cosmic rays produced by neutralino pair annihilations in the dark halo of the ...
Ullio, Piero
core   +2 more sources

MoO3-TeO2 glass system for gamma ray shielding applications

open access: yesMaterials Research Express, 2020
This paper examines the gamma-ray shielding features of some selected tellurite-based glasses in the form of xMoO _3 (100−x)TeO _2 (20 ≤ x ≤ 50 mol%). Mass attenuation coefficients ( μ _m ) of these glasses have been calculated using Geant4 toolkit and ...
M S Al-Buriahi   +4 more
doaj   +1 more source

A New Determination Of The Diffuse Galactic and Extragalactic Gamma-Ray Emission

open access: yes, 2005
The GALPROP model for cosmic-ray propagation is able to make explicit predictions for the distribution of galactic diffuse gamma-rays. We compare different propagation models with gamma-ray spectra measured by EGRET for various regions of the sky.
Moskalenko, Igor V.   +2 more
core   +1 more source

Gamma-ray glow preceding downward terrestrial gamma-ray flash

open access: yesCommunications Physics, 2019
Two types of high-energy events have been detected from thunderstorms. One is “terrestrial gamma-ray flashes” (TGFs), sub-millisecond emissions coinciding with lightning discharges. The other is minute-lasting “gamma-ray glows”.
Y. Wada   +15 more
semanticscholar   +1 more source

Simultaneous X-Ray, Gamma-Ray, and Radio Observations of the Repeating Fast Radio Burst FRB 121102 [PDF]

open access: yes, 2017
We undertook coordinated campaigns with the Green Bank, Effelsberg, and Arecibo radio telescopes during Chandra X-ray Observatory and XMM-Newton observations of the repeating fast radio burst FRB 121102 to search for simultaneous radio and X-ray bursts ...
P. Scholz   +25 more
semanticscholar   +1 more source

Home - About - Disclaimer - Privacy