Probing Cosmic Acceleration Using Model-independent Parameterizations and Three Kinds of Supernova Statistics Techniques
نویسندگان
چکیده
منابع مشابه
Cosmic-ray acceleration in supernova shocks
Galactic cosmic rays are widely believed to be accelerated in expanding shock waves initiated by supernova explosions. The theory of diffusive shock acceleration of cosmic rays is now well established, but two fundamental questions remain partly unanswered: what is the acceleration efficiency, i.e. the fraction of the total supernova energy converted to cosmic-ray energy, and what is the maximu...
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Laboratoire d'Annecy-le-Vieux de Physique des Particules, Université de Savoie, CNRS/IN2P3, BP 110 F-74941 Annecy-le-Vieux Cedex, France Max-Planck-Institut fur Kernphysik, P.O. Box 103980, D 69029 Heidelberg, Germany Astroparticule et Cosmologie (APC), CNRS, Universite Paris 7 Denis Diderot, F-75205 Paris Cedex 13, France LPNHE, Université Pierre et Marie Curie Paris 6, Université Denis Didero...
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In the common model supernova shock-acceleration of cosmic rays there are two open questions: 1. where does the high energy cosmic rays below the knee (10 − 10 Gev) come from, and 2. are cosmic ray accelerated only at their origin or contineuosly during their residence in the Galaxy. We show that 105 eV light nuclei are probably accelerted by associations of supernovae. The ratio of the spectra...
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ژورنال
عنوان ژورنال: The Astrophysical Journal
سال: 2019
ISSN: 1538-4357
DOI: 10.3847/1538-4357/ab0416