Solar cycle variations of cosmic ray intensity and large-scale structure of the heliosphere

1983 ◽  
Vol 34 (2) ◽  
Author(s):  
SantP. Agrawal
Keyword(s):  
Solar Cycle ◽  
Large Scale ◽  
Cosmic Ray ◽  
Large Scale Structure ◽  
Scale Structure ◽  
Cosmic Ray Intensity

COSMOLOGICAL SHOCK WAVES IN THE LARGE SCALE STRUCTURE OF THE UNIVERSE

2013 ◽  
Vol 23 ◽  
pp. 386-390
Author(s):  
RENYI MA ◽  
DONGSU RYU ◽  
HYESUNG KANG
Keyword(s):  
Shock Waves ◽  
Galaxy Clusters ◽  
Large Scale ◽  
Gamma Ray ◽  
High Redshift ◽  
Cosmic Ray ◽  
Large Scale Structure ◽  
Scale Structure ◽  
Weak Shocks ◽  
The Universe

Based on the cosmological hydrodynamic simulation, we study the properties of shock waves formed during the formation of the large scale structure (LSS) of the universe, and investigate their contribution to the cosmic ray (CR) fraction in the intergalactic medium (IGM). It is found that while strong accretion shocks prevail at high redshift, weak internal shocks become dominant in the intracluster medium (ICM) as galaxy clusters form and virialize at low redshift, z < 1. The accumulated CR proton energy is likely to be less than 10 % of the thermal energy in the ICM, since weak shocks of M ≲ 3 are most abundant. This is consistent with the upper limit constrained by radio and gamma-ray observations of galaxy clusters. In the warm-hot medium (WHIM) inside filaments, CRs and gas could be almost in energy equipartition, since relatively stronger shocks of 5 ≲ M ≲ 10 are dominant there. We suggest that the non-thermal emissions from the CR electrons and protons accelerated by cosmological shock waves could provide a new way to detect the WHIM of the universe.

scholarly journals Cosmic ray anisotropy from large-scale structure and the effect of magnetic horizons

2019 ◽  
Vol 484 (3) ◽  
pp. 4167-4173 ◽  
Author(s):  
N Globus ◽  
T Piran ◽  
Y Hoffman ◽  
E Carlesi ◽  
D Pomarède
Keyword(s):  
Large Scale ◽  
Cosmic Ray ◽  
Large Scale Structure ◽  
Scale Structure

scholarly journals The Imprint of Large-scale Structure on the Ultrahigh-energy Cosmic-Ray Sky

2021 ◽  
Vol 913 (1) ◽  
pp. L13
Author(s):  
Chen Ding ◽  
Noémie Globus ◽  
Glennys R. Farrar
Keyword(s):  
Large Scale ◽  
Cosmic Ray ◽  
Large Scale Structure ◽  
Scale Structure ◽  
Ultrahigh Energy
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