Results 21 to 30 of about 4,151 (91)
A Unified Model of High-Energy Astrophysical phenomena [PDF]
, 2004 I outline a unified model of high-energy astrophysics, in which the gamma background radiation, cluster "cooling flows", gamma-ray bursts, X-ray flashes and cosmic-ray electrons and nuclei of all energies -share a common origin.
A. Rújula
semanticscholar +1 more source
Identification of Ultra High Energy neutrino induced acoustic pulses
International Conference on Rebooting Computing, 2023 According to the thermo-acoustic model introduced by Askaryan, the instantaneous energy deposition of a particle’s shower in a medium produces a sound wave. The concept of acoustic neutrino detection is based on this principle.
C. Markou +4 more
semanticscholar +1 more source
Searches for connections between dark matter and high-energy neutrinos with IceCube [PDF]
Journal of Cosmology and Astroparticle Physics, 2022 In this work, we present the results of searches for signatures of dark matter decay or annihilation into Standard Model particles, and secret neutrino interactions with dark matter. Neutrinos could be produced in the decay or annihilation of galactic or
R. Abbasi +381 more
semanticscholar +1 more source
Physics of Plasmas, 2023 The study of relativistic electron–positron pair plasmas is both of fundamental physics interest and important to understand the processes that shape the magnetic field dynamics, particle acceleration, and radiation emission in high-energy astrophysical ...
Hui-Hwa Chen, F. Fiuza
semanticscholar +1 more source
NuSTAR Tests of Sterile-Neutrino Dark Matter: New Galactic Bulge Observations and Combined Impact
, 2020 We analyze two dedicated NuSTAR observations with exposure ${\sim}190$ ks located ${\sim}10^\circ$ from the Galactic plane, one above and the other below, to search for x-ray lines from the radiative decay of sterile-neutrino dark matter.
Beacom, John F. +6 more
core +1 more source
Study of high energy phenomena from near space using low-cost meteorological balloons [PDF]
Experimental astronomy (Print), 2017 Indian Centre for Space Physics has taken a novel strategy to study low energy cosmic rays and astrophysical X-ray sources which involve very light weight payloads up to about five kilograms on board a single or multiple balloons which are used for ...
S. Chakrabarti +3 more
semanticscholar +2 more sources
Axion Like Particles and the Inverse Seesaw Mechanism [PDF]
, 2015 Light pseudoscalars known as axion like particles (ALPs) may be behind physical phenomena like the Universe transparency to ultra-energetic photons, the soft $\gamma$-ray excess from the Coma cluster, and the 3.5 keV line.
Carvajal, C. D. R. +3 more
core +2 more sources
Impact of Bayesian prior on the characterization of binary black hole coalescences [PDF]
, 2017 In a regime where data are only mildly informative, prior choices can play a significant role in Bayesian statistical inference, potentially affecting the inferred physics.
Chatziioannou, Katerina +4 more
core +5 more sources
Detection of ultra high energy neutrinos by IceCube: Sterile neutrino scenario [PDF]
, 2013 The short-baseline neutrino oscillation experiments, the excess of radiation from the measurement of the cosmic microwave background radiation, the necessity of the nonbaryonic dark matter candidate and the depletion of the neutrino flux in IceCube all ...
Rajpoot, Subhash +2 more
core +2 more sources
Revisiting the SN1987A gamma-ray limit on ultralight axion-like particles [PDF]
, 2014 We revise the bound from the supernova SN1987A on the coupling of ultralight axion-like particles (ALPs) to photons. In a core-collapse supernova, ALPs would be emitted via the Primakoff process, and eventually convert into gamma rays in the magnetic ...
A. Mirizzi +29 more
core +1 more source