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The First LHAASO Catalog of Gamma-Ray Sources [PDF]

open access: yesThe Astrophysical Journal Supplement Series, 2023
We present the first catalog of very-high-energy and ultra-high-energy gamma-ray sources detected by the Large High Altitude Air Shower Observatory. The catalog was compiled using 508 days of data collected by the Water Cherenkov Detector Array from 2021
Zhen Cao   +280 more
doaj   +6 more sources

Gamma Ray Bursts as Neutrino Sources [PDF]

open access: yes, 2015
Gamma-ray burst sources appear to fulfill all the conditions for being efficient cosmic ray accelerators, and being extremely compact, are also expected to produce multi-GeV to PeV neutrinos. I review the basic model predictions for the expected neutrino
Peter Mészáros
semanticscholar   +5 more sources

The Third Fermi Large Area Telescope Catalog of Gamma-Ray Pulsars

open access: yesThe Astrophysical Journal, 2023
We present 294 pulsars found in GeV data from the Large Area Telescope (LAT) on the Fermi Gamma-ray Space Telescope. Another 33 millisecond pulsars (MSPs) discovered in deep radio searches of LAT sources will likely reveal pulsations once phase-connected
D. A. Smith   +170 more
doaj   +2 more sources

Evidence that gamma-ray burst sources repeat [PDF]

open access: greenMonthly Notices of the Royal Astronomical Society, 1994
We investigate clustering in the angular distribution of the 260 $ $-ray bursts in the publicly available BATSE catalogue, using a nearest neighbour analysis and the measures of burst brightness $B$ and short time scale variability $V$ which we introduced earlier. We find that while all 260 bursts are only modestly clustered (Q-value = $1.8 \times 10^{
Jean M. Quashnock, D. Q. Lamb
openalex   +5 more sources

On the Potential of Bright, Young Pulsars to Power Ultrahigh Gamma-Ray Sources [PDF]

open access: yesAstrophysical Journal Letters, 2022
The recent discovery of a new population of ultrahigh-energy gamma-ray sources with spectra extending beyond 100 TeV revealed the presence of Galactic PeVatrons—cosmic-ray factories accelerating particles to PeV energies.
E. de Oña Wilhelmi   +3 more
semanticscholar   +1 more source

3HWC: The Third HAWC Catalog of Very-high-energy Gamma-Ray Sources [PDF]

open access: yesAstrophysical Journal, 2020
We present a new catalog of TeV gamma-ray sources using 1523 days of data from the High-Altitude Water Cherenkov (HAWC) Observatory. The catalog represents the most sensitive survey of the northern gamma-ray sky at energies above several TeV, with three ...
A. Albert   +106 more
semanticscholar   +1 more source

On the Properties of Inverse Compton Spectra Generated by Upscattering a Power-law Distribution of Target Photons

open access: yesThe Astrophysical Journal, 2023
Relativistic electrons are an essential component in many astrophysical sources, and their radiation may dominate the high-energy bands. Inverse Compton (IC) emission is the radiation mechanism that plays the most important role in these bands. The basic
Dmitry Khangulyan   +2 more
doaj   +1 more source

Limits on Leptonic TeV Emission from the Cygnus Cocoon with Swift-XRT

open access: yesThe Astrophysical Journal, 2023
γ -ray observations of the Cygnus Cocoon, an extended source surrounding the Cygnus X star-forming region, suggest the presence of a cosmic-ray accelerator reaching energies up to a few PeV.
David Guevel   +7 more
doaj   +1 more source

Extended gamma-ray sources around pulsars constrain the origin of the positron flux at Earth [PDF]

open access: yesScience, 2017
Exotic origin for cosmic positrons Several cosmic-ray detectors have found more positrons arriving at Earth than expected. Some researchers interpret this as a signature of exotic physics, such as the annihilation of dark matter particles.
A. Abeysekara   +115 more
semanticscholar   +1 more source

GeV gamma-ray sources [PDF]

open access: yesAIP Conference Proceedings, 2000
We report on the preliminary extension of our work on cataloging the GeV sky to approximately 7 years of CGRO/EGRET observations with special emphasis on a search for transient sources. The search method and significance levels are presented. Our initial results on 13 possible transients indicate that 3 may be new gamma-ray sources.
Lamb, R. C., Macomb, D. J.
openaire   +4 more sources

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