Results 51 to 60 of about 418,709 (225)
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.
openaire +3 more sources
, 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
core +1 more source
Journal of Physics: Conference Series, 2006 In this brief review we describe the theory of the origin of Galactic cosmic rays. The concept that interaction near the source is the dominant source of ?-rays, and spallation secondaries seems best suited to explain the EGRET ?-spectrum of the inner Galaxy, the abundances of light elements, the anti-protons and the positrons.
openaire +1 more source
The Effects of Discreteness of Galactic Cosmic‐Ray Sources [PDF]
The Astrophysical Journal, 2004 Most studies of GeV Galactic Cosmic Rays (GCR) nuclei assume a steady state/continuous distribution for the sources of cosmic rays, but this distribution is actually discrete in time and in space. The current progress in our understanding of cosmic ray physics (acceleration, propagation), the required consistency in explaining several GCRs ...
Taillet, R. +4 more
openaire +3 more sources
Meteoritics &Planetary Science, EarlyView.Abstract Regolith samples from the carbonaceous asteroid Bennu were stowed and delivered to Earth in the OSIRIS‐REx spacecraft's Sample Return Capsule (SRC). We applied multiple analytical techniques to study the components of the post‐flight SRC, with a focus on assessing the conditions and any contaminants to which the Bennu samples were exposed ...
Scott A. Sandford +35 more
wiley +1 more source
GEV-TEV GALACTIC COSMIC RAYS [PDF]
Particle Physics at the Year of Centenary of Bruno Pontecorvo, 2015 This short review aims at presenting the way we currently understand, model, and constrain the transport of cosmic rays in the GeV-TeV energy domain. This is a research field per se, but is also an important tool e.g. to improve our understanding of the cosmic-ray sources, of the diffuse non-thermal Galactic emissions (from radio wavelengths to gamma ...
openaire +2 more sources
Thermal history, collisional history, and structure of the CK‐chondrite parent body
Meteoritics &Planetary Science, EarlyView.Abstract Major chondrite groups (H, L, LL, R, EH, EL, CK) with some members of petrologic type 5 and 6 also have some members of types 3 and 4; they do not have members of type 1 or 2. Their parent bodies had onion‐shell structures and were internally heated by the decay of 26Al.
Alan E. Rubin
wiley +1 more source
Renaissance Studies, EarlyView.ABSTRACT This article examines the iconography of the Andromeda constellation as an intersex figure within medieval and early modern astrological traditions. It focuses on the origins of this imagery in the thirteenth‐century astrological writings of Scot and its reappearance nearly three centuries later in Ratdolt's illustrated 1482 edition of Hyginus'
Bar Leshem
wiley +1 more source
Electrons in the cosmic radiation [PDF]
, 1990 The nature of cosmic ray electrons and their radiation in the Universe has been studied. A convection associated diffusion model is proposed to describe the main characteristics of the large-scale distribution of cosmic ray electrons in the Galaxy: (1) a
Chi, Xinyu, Chi, X
core
Experimental Physiology, EarlyView.Abstract Long‐term space travel (e.g. travel to Mars) will greatly exceed the recommended lifetime radiation dose of 600 millisieverts (mSv) and have a detrimental effect on skeletal fragility. Our objective was to determine if 1 Gray (GY) radiation impacts the biomechanical properties of the tibia and femur from rats under microgravity.
Brent J. F. Hill, Rahul Mehta
wiley +1 more source