scholarly journals Gamma-ray signatures from pair cascades in recombination-line radiation fields

2021 ◽  
Author(s):  
Christoph Wendel ◽  
Josefa Becerra Gonzalez ◽  
Amit Shukla ◽  
David Paneque ◽  
Karl Mannheim
Keyword(s):  
Gamma Ray ◽  
Recombination Line ◽  
Line Radiation ◽  
Radiation Fields

Tritium Measurement in High Gamma-Ray Radiation Fields by Using an Imaging Plate

2011 ◽  
Vol 60 (3) ◽  
pp. 944-947 ◽  
Author(s):  
Hiroko Ohuchi ◽  
Yasuhiro Kondo ◽  
Yamato Asakura ◽  
Takao Kawano
Keyword(s):  
Gamma Ray ◽  
Imaging Plate ◽  
Radiation Fields ◽  
High Gamma

Definition of the radiation fields for the JET gamma-ray spectrometer diagnostics

2013 ◽  
Vol 88 (6-8) ◽  
pp. 1366-1370 ◽  
Author(s):  
Vasile Zoita ◽  
Sorin Soare ◽  
Teddy Craciunescu ◽  
Marian Curuia ◽  
Vasily Kiptily ◽  
...  
Keyword(s):  
Gamma Ray ◽  
Radiation Fields ◽  
Gamma Ray Spectrometer ◽  
Definition Of

Very high energy gamma-ray absorption via localized diffuse radiation fields

2012 ◽  
Author(s):  
Andreas Maurer ◽  
Josefa Becerra-Gonzalez ◽  
Martin Raue ◽  
Dieter Horns
Keyword(s):  
Gamma Ray ◽  
Diffuse Radiation ◽  
High Energy ◽  
High Energy Gamma ◽  
Radiation Fields ◽  
Very High Energy ◽  
Energy Gamma ◽  
Very High

GAMMA RAY LINE RADIATION

1994 ◽  
pp. 32-68 ◽  
Author(s):  
REUVEN RAMATY ◽  
RICHARD E. LINGENFELTER
Keyword(s):  
Gamma Ray ◽  
Line Radiation

A Novel Detector for Measuring Gamma-Ray Fluxes in a Mixed Pulsed Neutron-Gamma Radiation Fields

2007 ◽  
Vol 54 (4) ◽  
pp. 1239-1243 ◽  
Author(s):  
Xiaoping Ouyang ◽  
Zhongbing Zhang ◽  
Qunshu Wang
Keyword(s):  
Gamma Radiation ◽  
Gamma Ray ◽  
Radiation Fields ◽  
Pulsed Neutron

scholarly journals Constraints on the optical-IR extragalactic background from γ-ray absorption studies

2011 ◽  
Vol 7 (S284) ◽  
pp. 420-428 ◽  
Author(s):  
Luigi Costamante
Keyword(s):  
Gamma Ray ◽  
High Energy ◽  
Background Light ◽  
Radiation Fields ◽  
Direct Measurements ◽  
Absorption Studies ◽  
Diffuse Background ◽  
Very High Energy ◽  
Tev Gamma Rays ◽  
Very High

AbstractVery high energy (VHE ≳0.1 TeV) gamma-rays from extragalactic sources, interacting by γ-γ collisions with diffuse intergalactic radiation fields, provide an alternative way to constrain the diffuse background light, completely independent of direct measurements. The limits depend however on our knowledge of the physics of the gamma-ray sources. After clarifying the interplay between background light and VHE spectra, I summarize the extent and validity of the obtainable limits, and where future improvements can be expected.

HIGH ENERGY NEUTRINOS FROM ACCELERATORS OF COSMIC RAY NUCLEI

2008 ◽  
Vol 17 (09) ◽  
pp. 1401-1409
Author(s):  
ANDREW M. TAYLOR
Keyword(s):  
Active Galactic Nuclei ◽  
Gamma Ray ◽  
Neutrino Flux ◽  
Galactic Nuclei ◽  
Cosmic Ray ◽  
High Energy ◽  
Air Shower ◽  
Radiation Fields ◽  
High Energy Neutrinos ◽  
Neutrino Fluxes

Ongoing experimental efforts to detect cosmic sources of high energy neutrinos are guided by the expectation that astrophysical accelerators of cosmic ray protons also generate high energy neutrinos through their interactions with ambient matter and/or photons. However the predicted neutrino flux is reduced if cosmic ray sources accelerate not only protons but also a significant number of heavier nuclei, as is indicated by recent air shower data. I consider two plausible extragalactic class of sources, active galactic nuclei and gamma-ray bursts, and demand consistency with the observed cosmic ray composition and energy spectrum at Earth after allowing for propagation through intergalactic radiation fields. This allows me to calculate the degree of photo-disintegration and pion production expected to occur in these sources, and hence the neutrino fluxes from them.

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