On the controlled chaos of S-iteration according to Lyapunov exponent and certain control mechanisms in discrete dynamical systems
PUNJAB UNIVERSITY JOURNAL OF MATHEMATICS, vol.55, pp.253-267, 2023 (ESCI, Scopus)
- Publication Type: Article / Article
- Volume: 55
- Publication Date: 2023
- Doi Number: 10.52280/pujm.2023.55(7-8)01
- Journal Name: PUNJAB UNIVERSITY JOURNAL OF MATHEMATICS
- Journal Indexes: Emerging Sources Citation Index (ESCI), Scopus
- Page Numbers: pp.253-267
- Yıldız Technical University Affiliated: Yes
Abstract
We review the main observational and theoretical facts about acceleration of Galactic cosmic rays in supernova remnants, discussing the arguments in favor and against a connection between cosmic rays and supernova remnants, the so-called supernova remnant paradigm for the origin of Galactic cosmic rays. Recent developments in the modeling of the mechanism of diffusive shock acceleration are discussed, with emphasis on the role of 1) magnetic field amplification, 2) acceleration of nuclei heavier than hydrogen, 3) presence of neutrals in the circumstellar environment. The status of the supernova-cosmic ray connection in the time of Fermi-LAT and Cherenkov telescopes is also discussed.