Results 121 to 130 of about 3,608,924 (307)
Proton Acceleration with Relativistic Electromagnetic Shock
Advanced Science, EarlyView.New Ion Acceleration Mechanism! A novel cosmic‐ray proton acceleration mechanism is proposed, where relativistic electromagnetic shocks accelerate protons transversely. Hamiltonian analysis yields a scaling law linking the proton energy to the minimum longitudinal thickness of the shock.
Ting Xiao +5 more
wiley +1 more source
Galactic Cosmic Rays: The first detection of TeV gamma-rays from Red Dwarfs [PDF]
EPJ Web of Conferences, 2019 The present point of view on the sources of cosmic rays in Galaxy considers explosions of supernovae as sources of these particles up to energies of 1017 eV.
Sinitsyna V.G. +2 more
doaj +1 more source
Impact of Cosmic Ray Transport on Galactic Winds [PDF]
, 2017 The role of cosmic rays generated by supernovae and young stars has very recently begun to receive significant attention in studies of galaxy formation and evolution due to the realization that cosmic rays can efficiently accelerate galactic winds. Microscopic cosmic ray transport processes are fundamental for determining the efficiency of cosmic ray ...
arxiv +1 more source
Impact of transport modelling on the $^{60}$Fe abundance inside Galactic cosmic ray sources [PDF]
, 2020 The ACE-CRIS collaboration has recently released the measurement of radioactive $^{60}$Fe nuclei abundance in Galactic Cosmic Rays, in the energy range $\sim 195-500$ MeV per nucleon. We model Cosmic Ray propagation and derive from this measurement the $^{60}$Fe/$^{56}$Fe ratio that is expected in the sources of Galactic Cosmic Rays. We describe Cosmic
arxiv +1 more source
OBSERVATION OF SMALL-SCALE ANISOTROPY IN THE ARRIVAL DIRECTION DISTRIBUTION OF TeV COSMIC RAYS WITH HAWC [PDF]
, 2014 The High-Altitude Water Cherenkov (HAWC) Observatory is sensitive to gamma rays and charged cosmic rays at TeV energies. The detector is still under construction, but data acquisition with the partially deployed detector started in 2013.
A. Abeysekara +107 more
semanticscholar +1 more source
Advanced Electronic Materials, EarlyView.A blackbody‐sensitive infrared photodetector comprised of an open‐shell conjugated polymer demonstrates high sensitivity without cooling and exceptional radiation hardness, surpassing inorganic compound semiconductor devices. This functionality, inherent to the polymer semiconductor, provides a new frontier for low‐cost, size, weight, and power space ...
Anthony R. Benasco +10 more
wiley +1 more source
The IceCube Neutrino Observatory III: Cosmic Rays [PDF]
arXiv, 2011 Cosmic rays and related measurements: IceTop overview; IceTop calibration; Cosmic ray composition; Air shower measurements; Studies of cosmic ray muons; Studies of PeV gamma rays; Cosmic ray anisotropy; Forbush decrease; Submitted papers to the 32nd International Cosmic Ray Conference, Beijing 2011.
arxiv
The past and future 20-years endeavor for discovering origins of ultra-high energy cosmic rays -- Rapporteur's summary of cosmic ray indirect -- [PDF]
PoS (ICRC2023) 031This article is the rapporteur's summary of the cosmic ray indirect sessions of the 38th International Cosmic Ray Conference in Nagoya, Japan. The rapporteur highlights cosmic ray indirect observatories around the world, and reviews a selection of the latest results regarding the cosmic ray energy spectrum, mass composition, anisotropy, hadronic ...
arxiv +1 more source
The Nine Lives of Cosmic Rays in Galaxies
, 2015 © 2015 by Annual Reviews. Cosmic-ray astrophysics has advanced rapidly in recent years, and its impact on other astronomical disciplines has broadened.
I. Grenier, J. Black, A. Strong
semanticscholar +1 more source
The origin of galactic cosmic rays [PDF]
, 2014 Initial discovery of Cosmic Rays (CRs) dates back to a century ago (1912). Their identification as particles rather than radiation dates to about 20 years later and in 20 more years also the first suggestion that they were associated with SNRs was in ...
E. Amato
semanticscholar +1 more source