Unidentified EGRET Sources and the Extragalactic Gamma-Ray Background [PDF]
, 2006 The large majority of EGRET point sources remain to this day without an identified low-energy counterpart. Whatever the nature of the EGRET unidentified sources, faint unresolved objects of the same class must have a contribution to the diffuse gamma-ray
A. Dar +20 more
core +2 more sources
The Gamma-ray Window to Intergalactic Magnetism [PDF]
Universe, 2021 One of the most promising ways to probe intergalactic magnetic fields (IGMFs) is through gamma rays produced in electromagnetic cascades initiated by high-energy gamma rays or cosmic rays in the intergalactic space.
R. Alves Batista, A. Saveliev
semanticscholar +1 more source
Prompt gamma-ray methods for industrial process evaluation: A simulation study
Nukleonika, 2022 Radioisotope applications in industrial process inspection and evaluation using gamma-ray emitters provide otherwise unavailable information. Offering alternative gamma-ray sources can support the technology by complementing sources’ availability and ...
Mohammed Mohammed Siddig H. +5 more
doaj +1 more source
PARKES RADIO SEARCHES OF FERMI GAMMA-RAY SOURCES AND MILLISECOND PULSAR DISCOVERIES [PDF]
, 2015 In a search with the Parkes radio telescope of 56 unidentified Fermi-Large Area Telescope (LAT) gamma-ray sources, we have detected 11 millisecond pulsars (MSPs), 10 of them discoveries, of which five were reported by Kerr et al.
F. Camilo +15 more
semanticscholar +1 more source
AMEGO-X: MeV gamma-ray Astronomy in the Multi-messenger Era [PDF]
International Conference on Rebooting Computing, 2021 Recent detections of gravitational wave signals and neutrinos from gamma-ray sources have ushered in the era of multi-messenger astronomy, while highlighting the importance of gammaray observations for this emerging field.
H. Fleischhack
semanticscholar +1 more source
A stacking method to study the gamma-ray emission of source samples based on the co-adding of Fermi LAT count maps [PDF]
, 2012 We present a stacking method that makes use of co-added maps of gamma-ray counts produced from data taken with the Fermi Large Area Telescope. Sources with low integrated gamma-ray fluxes that are not detected individually may become detectable when ...
Farnier, C. +4 more
core +1 more source
A correlation between hard gamma-ray sources and cosmic voids along the line of sight [PDF]
, 2014 We estimate the galaxy density along lines of sight to hard extragalactic gamma-ray sources by correlating source positions on the sky with a void catalog based on the Sloan Digital Sky Survey (SDSS).
A. Furniss +3 more
semanticscholar +1 more source
A Search for Blazar-Like Radio-Loud Narrow-Line Seyfert 1 Galaxies
Galaxies, 2017 We report the results of an observational program to investigate the gamma-ray and optical variability properties of the vRL NLSY1 galaxies listed in the Yuan et al. sample. We have identified 17 members of the Yuan et al. sample possibly associated with
Hugh R. Miller +6 more
doaj +1 more source
BLAZARS AS ULTRA-HIGH-ENERGY COSMIC-RAY SOURCES: IMPLICATIONS FOR TeV GAMMA-RAY OBSERVATIONS [PDF]
, 2011 The spectra of BL Lac objects and Fanaroff–Riley I radio galaxies are commonly explained by the one-zone leptonic synchrotron self-Compton (SSC) model. Spectral modeling of correlated multiwavelength data gives the comoving magnetic field strength, the ...
K. Murase +3 more
semanticscholar +1 more source
NEW ASSOCIATIONS OF GAMMA-RAY SOURCES FROM THE FERMI SECOND SOURCE CATALOG [PDF]
, 2014 We present the results of an all-sky radio survey between 5 and 9 GHz of sky areas surrounding all unassociated γ-ray objects listed in the Fermi Large Area Telescope Second Source Catalog (2FGL).
F. Schinzel +5 more
semanticscholar +1 more source