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The origin of galactic cosmic rays [PDF]
, 2007 The origin of galactic cosmic rays is one of the most interesting unsolved problems in astroparticle physics. Experimentally, the problem is attacked by a multi-disciplinary effort, namely by direct measurements of cosmic rays above the atmosphere, by ...
Aharonian +54 more
core +3 more sources
Earth Surface Processes and Landforms, Volume 48, Issue 1, Page 198-214, January 2023., 2023 The Atlantic coast of NW Spain, where shingle beaches appear today, has suffered an important mobilization of dunes from a sea level about −120 m (bpsl), 20 ky ago. This aeolization caused the collapse of coastal/fluvial ecosystems (as forests) until the Late Holocene.
Carlos Arce Chamorro +3 more
wiley +1 more source
Extreme Value Analysis of Ground Magnetometer Observations at Valentia Observatory, Ireland
Space Weather, 2023 Understanding global space weather effects is of great importance to the international scientific community, but more localized space weather predictions are important on a national level.
Alexandra Ruth Fogg +7 more
doaj +1 more source
Radiation Exposure in the Lower Atmosphere during Different Periods of Solar Activity
Atmosphere, 2022 In recent years, there has been a huge increase in air travel, both for business and leisure. For this reason, entities such as the European Commission and the International Committee on Radiological Protection have provided several recommendations for ...
Anastasia Tezari +9 more
doaj +1 more source
On the physical basis of cosmic time [PDF]
Studies in History and Philosophy of Science Part B: Studies in History and Philosophy of Modern Physics, 2009 44 pages.
Henrik Zinkernagel, Svend E. Rugh
openaire +4 more sources
Hubble Tension: The Evidence of New Physics [PDF]
Universe, 2023 The ΛCDM model provides a good fit to most astronomical observations but harbors large areas of phenomenology and ignorance. With the improvements in the precision and number of observations, discrepancies between key cosmological parameters of this ...
Jian-Ping Hu, Fayin Wang
semanticscholar +1 more source
The hadronic models for cosmic ray physics: the FLUKA code solutions [PDF]
, 2006 FLUKA is a general purpose Monte Carlo transport and interaction code used for fundamental physics and for a wide range of applications. These include Cosmic Ray Physics (muons, neutrinos, EAS, underground physics), both for basic research and applied ...
A. Empl +32 more
core +2 more sources
The Impact of Cosmic Ray Injection on Magnetic Flux Tubes in a Galactic Disk [PDF]
, 2022 In galactic disks, the Parker instability results when non-thermal pressure support exceeds a certain threshold. The non-thermal pressures considered in the Parker instability are cosmic ray pressure and magnetic pressure. This instability takes a long time to saturate $(>500 \, \mathrm{Myr})$ and assumes a background with fixed cosmic ray pressure to ...
arxiv +1 more source
Discrepancies between CFHTLenS cosmic shear and Planck: new physics or systematic effects? [PDF]
, 2016 There is currently a discrepancy in the measured value of the amplitude of matter clustering, parameterised using $\sigma_8$, inferred from galaxy weak lensing, and cosmic microwave background data, which could be an indication of new physics, such as ...
T. Kitching +3 more
semanticscholar +1 more source
Gravitational waves from current-carrying cosmic strings [PDF]
Journal of Cosmology and Astroparticle Physics, 2022 Cosmic strings are predicted by many Standard Model extensions involving the cosmological breaking of a symmetry with nontrivial first homotopy group and represent a potential source of primordial gravitational waves (GWs).
P. Auclair +3 more
semanticscholar +1 more source