Results 291 to 300 of about 266,284 (323)
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Nuclear Physics B - Proceedings Supplements, 2004
Two aspects of cosmic rays and cosmology are considered here. Firstly, the relevance of extragalactic cosmic rays to the radiation – and magnetic – fields in the Universe and secondly the contribution of Galactic cosmic rays (or other entities allied to them) to the 'foreground' in analysis of the cosmic microwave background (CMB).
Tadeus Wibig +3 more
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Two aspects of cosmic rays and cosmology are considered here. Firstly, the relevance of extragalactic cosmic rays to the radiation – and magnetic – fields in the Universe and secondly the contribution of Galactic cosmic rays (or other entities allied to them) to the 'foreground' in analysis of the cosmic microwave background (CMB).
Tadeus Wibig +3 more
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Chemical Society Reviews, 2013
Gas-phase chemistry in the interstellar medium is driven by fast ion-molecule reactions. This, of course, demands a mechanism for ionization, and cosmic rays are the ideal candidate as they can operate throughout the majority of both diffuse and dense interstellar clouds.
Benjamin J. McCall, Nick Indriolo
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Gas-phase chemistry in the interstellar medium is driven by fast ion-molecule reactions. This, of course, demands a mechanism for ionization, and cosmic rays are the ideal candidate as they can operate throughout the majority of both diffuse and dense interstellar clouds.
Benjamin J. McCall, Nick Indriolo
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Space Science Reviews, 1998
Secondary radioactive isotopes that are used for the determination of cosmic-ray age have relatively short decay lifetimes. The measured abundance of these isotopes at low energies is representative of the cosmic-ray diffusion and the gas distribution in a region of a few hundred parsecs around the Sun.
Vladimir Ptuskin, Aimé Soutoul
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Secondary radioactive isotopes that are used for the determination of cosmic-ray age have relatively short decay lifetimes. The measured abundance of these isotopes at low energies is representative of the cosmic-ray diffusion and the gas distribution in a region of a few hundred parsecs around the Sun.
Vladimir Ptuskin, Aimé Soutoul
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Il Nuovo Cimento, 1952
Cosmic rays undergound are treated as entirely caused by the electromagnetic interactions of μ-mesons. Simple approximations are given for the underground spectra of μ-mesons, virtual photons, soft showers, and nucleons. Comparison with experimental data is satisfactory on the absolute rate of slow neutron and nuclear star production, and on the charge
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Cosmic rays undergound are treated as entirely caused by the electromagnetic interactions of μ-mesons. Simple approximations are given for the underground spectra of μ-mesons, virtual photons, soft showers, and nucleons. Comparison with experimental data is satisfactory on the absolute rate of slow neutron and nuclear star production, and on the charge
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2010
This book is not a book on high energy physics and particle interactions. We have, however, to give the reader some information on the structure of matter and the interactions between its building blocks, because these are necessary for the understanding of the phenomena of cosmic ray acceleration, propagation in the Universe, and detection.
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This book is not a book on high energy physics and particle interactions. We have, however, to give the reader some information on the structure of matter and the interactions between its building blocks, because these are necessary for the understanding of the phenomena of cosmic ray acceleration, propagation in the Universe, and detection.
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2010
As we discussed in the previous chapter, primary cosmic rays interact with the atmosphere and produce fluxes of secondary, tertiary, etc. particles. All these particles together create a cascade, called an air shower. In principle, measurements of air shower particles can be interpreted in terms of the energy spectrum and the composition of the primary
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As we discussed in the previous chapter, primary cosmic rays interact with the atmosphere and produce fluxes of secondary, tertiary, etc. particles. All these particles together create a cascade, called an air shower. In principle, measurements of air shower particles can be interpreted in terms of the energy spectrum and the composition of the primary
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New physics from the polarized light of the cosmic microwave background
Nature Reviews Physics, 2022Eiichiro Komatsu
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