Results 21 to 30 of about 8,442 (193)
Assessment of galactic cosmic ray models [PDF]
Journal of Geophysical Research: Space Physics, 2012 Among several factors involved in the development of a manned space mission concept, the astronauts' health is a major concern that needs to be considered carefully. Galactic cosmic rays (GCRs), which mainly consist of high‐energetic nuclei ranging from hydrogen to iron and beyond, pose a major radiation health risk in long‐term space missions.
Mrigakshi, Alankrita Isha +4 more
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The Astrophysical Journal, 2023 Abstract The origin of cosmic rays (CRs) above the knee in the spectrum is an unsolved problem. We present a wind model in which interstellar gas flows along a nonrotating, expanding flux tube with a changing speed and cross-sectional area.
Payel Mukhopadhyay +4 more
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The galactic cosmic ray ionization rate [PDF]
Proceedings of the National Academy of Sciences, 2006 The chemistry that occurs in the interstellar medium in response to cosmic ray ionization is summarized, and a review of the ionization rates that have been derived from measurements of molecular abundances is presented. The successful detection of large abundances of H 3 + in diffuse clouds and the ...
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Astrophysics of Galactic Charged Cosmic Rays [PDF]
, 2013 Invited review, to appear in Vol.5 of "Planets, Stars and Stellar Systems" Editor-in-chief: Oswalt, T.D McLean, I.S.; Bond, H.E.; French, L.; Kalas, P.; Barstow, M.; Gilmore,G.F.; Keel, W.
Castellina, Antonella, Donato, Fiorenza
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Cosmic ray-driven winds in the Galactic environment and the cosmic ray spectrum [PDF]
Monthly Notices of the Royal Astronomical Society, 2017 Cosmic Rays escaping the Galaxy exert a force on the interstellar medium directed away from the Galactic disk. If this force is larger than the gravitational pull due to the mass embedded in the Galaxy, then galactic winds may be launched. Such outflows may have important implications for the history of star formation of the host galaxy, and in turn ...
Recchia, S. +2 more
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Direct Measurements of Galactic Cosmic Rays [PDF]
, 2023 This paper reviews recent progress in the field of direct measurements of Galactic cosmic rays. High-statistic measurements of cosmic ray energy spectra, chemical and isotopic composition, and the rare antimatter components have been made using large ...
Tomassetti, Nicola
core +1 more source
Transition from Galactic to extragalactic cosmic-rays : implications for the highest energy Galactic cosmic-rays [PDF]
, 2014 International audienceIn this contribution, we discuss the transition from galactic to extragalactic cosmic-rays and its implications for the highest energy galactic cosmic-rays.
Denis Allard, Allard, Denis
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Advanced Science, EarlyView.We have shown that both simulated and actual spaceflight contribute to cartilage degradation in the knees of mice. Using RNA sequencing and bioenergetic profiling, we identified NADPH oxidase 4 (NOX4) as a key factor driving these changes. Additionally, we found that kaempferol, a naturally occurring flavonoid that binds directly to NOX4, reduces ...
Yuesong Yin +23 more
wiley +1 more source
The THESEUS Space Mission and the Infrared Telescope Calibration Unit
Astronomische Nachrichten, EarlyView.ABSTRACT The Transient High‐Energy Sky and Early Universe Surveyor (THESEUS) is an ESA M7 mission concept currently in Phase A, designed to exploit gamma‐ray bursts to probe the early Universe while advancing multi‐messenger and time‐domain astrophysics. To achieve its ambitious goals, THESEUS will combine wide‐band x‐ray and gamma‐ray monitors with an
András Péter Joó +9 more
wiley +1 more source
Multiscaling of Galactic Cosmic Ray Flux
Physical Review Letters, 2003 Multiscaling analysis of differential flux dissipation rate of galactic cosmic rays (Carbon nuclei) is performed in the energy ranges: 56.3-73.4 Mev/nucleon and 183.1-198.7 MeV/nucleon, using the data collected by ACE/CRIS spacecraft instrument for 2000 year.
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