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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).
TADEUSZ WIBIG, ARNOLD W. WOLFENDALE
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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).
TADEUSZ WIBIG, ARNOLD W. WOLFENDALE
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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 S. 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 S. Ptuskin, Aimé Soutoul
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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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Cosmic rays and cosmic strings
Astroparticle Physics, 1992Abstract It has been suggested that the highest-energy cosmic rays might be protons resulting from collapsing cosmic strings in the Universe. We point out that this mechanism, although attractive, has important shortcomings, notably the fact that gamma rays produced along with the protons and those produced by the protons in their interactions with ...
Xinyu Chi +3 more
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Radiation Research, 1961
the sun at the time of these flares. The peak intensity near the earth's orbit may be much higher than that of the galactic cosmic-ray background. There is evidence that the radiations originating in solar flares consist of particles usually having nonrelativistic velocities, but at times with energies extending well up into the relativistic range ...
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the sun at the time of these flares. The peak intensity near the earth's orbit may be much higher than that of the galactic cosmic-ray background. There is evidence that the radiations originating in solar flares consist of particles usually having nonrelativistic velocities, but at times with energies extending well up into the relativistic range ...
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2021
Cosmic rays are not rays. They are high energy particles arriving from outside the atmosphere, produced by the Sun and a number of different types of high energy astronomical sources. I first explain how, in the early twentieth century Victor Hess in a high altititude balloon showed that they do not have a terrrestrial origin, and how Robert Millikan ...
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Cosmic rays are not rays. They are high energy particles arriving from outside the atmosphere, produced by the Sun and a number of different types of high energy astronomical sources. I first explain how, in the early twentieth century Victor Hess in a high altititude balloon showed that they do not have a terrrestrial origin, and how Robert Millikan ...
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An Unscheduled Journey: From Cosmic Rays into Cosmic X-Rays
Annual Review of Astronomy and Astrophysics, 2013My research career began with cosmic-ray physics. Invited to the Netherlands, I was engaged in the measurement of cosmic-ray electrons. In parallel, we began balloon observations of the cosmic X-ray background. Coming back to Nagoya, we carried out rocket observations of soft X-rays with a thin polypropylene window.
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2010
Primary cosmic rays almost never reach sea level. Secondary particles do. Hadrons, electrons and γ-rays interact immediately with the rock and are quickly absorbed. 10 meters of rock provide two to three times more column depth than the whole atmosphere. Only very high energy muons (E > 500 GeV) can penetrate deep underground where they can be detected
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Primary cosmic rays almost never reach sea level. Secondary particles do. Hadrons, electrons and γ-rays interact immediately with the rock and are quickly absorbed. 10 meters of rock provide two to three times more column depth than the whole atmosphere. Only very high energy muons (E > 500 GeV) can penetrate deep underground where they can be detected
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2010
Cosmic rays are an essential part of the Universe. Their origin is interrelated with the main processes and the dynamics of star formation, stellar evolution, supernova explosions and to the state and conditions of the interstellar matter in the Galaxy.
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Cosmic rays are an essential part of the Universe. Their origin is interrelated with the main processes and the dynamics of star formation, stellar evolution, supernova explosions and to the state and conditions of the interstellar matter in the Galaxy.
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2010
Cosmic ray showers are cascades initiated by cosmic rays interacting in the atmosphere. Cascades had already been observed in the 1920s when a single track belonging to a charged particle was observed to split into two tracks. The observations of showers led to the development of the electromagnetic cascade theory in the 1930s with the participation of
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Cosmic ray showers are cascades initiated by cosmic rays interacting in the atmosphere. Cascades had already been observed in the 1920s when a single track belonging to a charged particle was observed to split into two tracks. The observations of showers led to the development of the electromagnetic cascade theory in the 1930s with the participation of
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