Results 21 to 30 of about 131,026 (299)
Gamma-ray luminosity function of gamma-ray bright AGNs [PDF]
Research in Astronomy and Astrophysics, 2009 Detection of Gamma-ray emission from a class of active galactic nuclei (viz blazars), has been one of the important findings from the Compton Gamma Ray Observatory (CGRO). However, their Gamma-ray luminosity function has not been well determined. Few attempts have been made in earlier works, where BL Lacs and Flat Spectrum Radio Quasars (FSRQs) have ...
Bhattacharya, Debbijoy +2 more
openaire +2 more sources
Scientific Reports, 2021 Multi-tracer imaging can provide useful information in the definitive diagnosis and research of medical, biological, and pharmaceutical sciences. Single-photon emission computed tomography (SPECT) is one of the nuclear medicine imaging modalities widely ...
Mizuki Uenomachi +3 more
doaj +1 more source
Particles, 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 +2 more sources
New applications and developments in the neutron shielding
EPJ Web of Conferences, 2017 Shielding neutrons involve three steps that are slowing neutrons, absorption of neutrons, and impregnation of gamma rays. Neutrons slow down with thermal energy by hydrogen, water, paraffin, plastic. Hydrogenated materials are also very effective for the
Uğur Fatma Aysun
doaj +1 more source
Radiation effect on germination and seedling traits in rice (Oryza sativa L.)
Electronic Journal of Plant Breeding, 2019 The biological effect of new source of physical mutagen viz., electron beam over gamma rays were studied with different dosages in the M1 generation of rice during 2017-18.
R. Lalitha +6 more
doaj +1 more source
Absorption of High Energy Gamma Rays by Interactions with Extragalactic Starlight Photons at High Redshifts [PDF]
, 1997 We extend earlier calculations of the attenuation suffered by gamma rays during their propagation from extragalactic sources, obtaining new extinction curves for gamma rays down to 10 GeV in energy, from sources up to a redshift of z=3.Comment: 5 pages ...
Salamon, M. H., Stecker, F. W.
core +2 more sources
Probit analysis and effect of electron beam and gamma rays in blackgram (Vigna mungo (L.) Hepper)
Electronic Journal of Plant Breeding, 2017 An experimental investigation was carried out to determine the lethal dose (LD50) of electron beam and gamma rays on two black gram varieties viz., MDU 1, VBN (Bg) 4. The lethal dose was determined by probit analysis. Dry seeds of both the varieties were
K. Veni +2 more
doaj +1 more source
On the Detectability of Galactic Dark Matter Annihilation into Monochromatic Gamma-rays
, 2010 Monochromatic gamma-rays are thought to be the smoking gun signal for identifying the dark matter annihilation. However, the flux of monochromatic gamma-rays is usually suppressed by the virtual quantum effects since dark matter should be neutral and ...
Abdo A A +17 more
core +1 more source
Time-of-flight discrimination between gamma-rays and neutrons by neural networks
, 2012 In gamma-ray spectroscopy, a number of neutrons are emitted from the nuclei together with the gamma-rays and these neutrons influence gamma-ray spectra.
Akkoyun, Serkan
core +1 more source
Multiwavelength Variability Analysis of 3C 279
Frontiers in Astronomy and Space Sciences, 2017 We present a multifrequency analysis of the variability in the flat-spectrum radio quasar 3C 279 from 2008 to 2014. Our multiwavelength datasets range from 1 mm to gamma-rays, with additional optical polarimetry.
Víctor M. Patiño-Álvarez +8 more
doaj +1 more source