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Supernova remnants (SNRs) are thought to be one of the major acceleration sites of galactic cosmic rays (CRs) and an important class of objects for high-energy astrophysics. SNRs produce multi-wavelength, non-thermal emission via…

高能天体物理现象 · 物理学 2019-05-08 Haruo Yasuda , Shiu-Hang Lee

Supernova remnants (SNRs) are widely considered to be accelerators of cosmic rays (CR). They are also expected to produce very-high-energy (VHE; $E > 100$ GeV) gamma rays through interactions of high-energy particles with the surrounding…

高能天体物理现象 · 物理学 2019-08-14 Iurii Sushch , Ryan C. G. Chaves , Manuel Paz Arribas , Francesca Volpe , Nukri Komin , Matthias Kerschhaggl

A nonlinear kinetic theory of cosmic ray (CR) acceleration in supernova remnants is employed to re-examine the nonthermal properties of the remnant of SN 1987A for an extended evolutionary period of 5--100 yr. It is shown that an efficient…

高能天体物理现象 · 物理学 2011-04-18 E. G. Berezhko , L. T. Ksenofontov , H. J. Voelk

The contribution of the Source Cosmic Rays (SCRs), confined in Supernova Remnants, to the diffuse high energy \gr emission above 1 GeV from the Galactic disk is studied. \grs produced by the SCRs have a much harder spectrum compared with…

天体物理学 · 物理学 2010-12-03 Evgeny G. Berezhko , Heinrich J. Voelk

Supernova remnants (SNRs) have long been suspected to be the primary sources of Galactic cosmic rays. Over the past decades, great strides have been made in the modelling of particle acceleration, magnetic field amplification, and escape…

高能天体物理现象 · 物理学 2025-02-18 Anton Stall , Chun Khai Loo , Philipp Mertsch

We study the production of cosmic rays (CRs) in supernova remnants (SNRs), including the reacceleration of background galactic cosmic rays (GCRs) - thus refining the early considerations by Blandford & Ostriker (1980) and Wandel et al.…

天体物理学 · 物理学 2007-05-23 E. G. Berezhko , L. T. Ksenofontov , V. S. Ptuskin , V. N. Zirakashvili , H. J. Voelk

SNR G106.3+2.7 is a complex TeV emitting source whose emission is still poorly understood. It has especially been at the center of numerous discussions on its potential for being a supernova remnant (SNR) PeVatron, since its gamma-ray…

高能天体物理现象 · 物理学 2026-03-31 P. Cristofari , G. Emery , T. Lubrano di Vavaria , H. Costantini , F. Cassol , M. -S. Carrasco , B. Le Nagat Neher

We performed kinetic simulations of diffusive shock acceleration in Type Ia supernova remnants (SNRs) expanding into a uniform interstellar medium (ISM). The preshock gas temperature is the primary parameter that governs the cosmic ray (CR)…

高能天体物理现象 · 物理学 2011-05-20 Hyesung Kang

Explicitly time-dependent, nonlinear kinetic theory of cosmic ray (CR) acceleration in supernova remnants (SNRs) has been used to investigate the properties of the very large SNR RX J0852.0-4622. The available observations do not clearly…

天体物理学 · 物理学 2007-08-01 E. G. Berezhko , G. Pühlhofer , H. J. Völk

Energetic gamma rays (GeV to TeV photon energy) have been detected toward several supernova remnants (SNR) associated with molecular clouds. If the gamma rays are produced mainly by hadronic processes rather than leptonic processes like…

高能天体物理现象 · 物理学 2012-05-16 F. Schuppan , J. K. Becker , J. H. Black , S. Casanova

Supernova remnants (SNRs) have long been assumed to be the source of cosmic rays (CRs) up to the "knee" of the CR spectrum at 10^15 eV, accelerating particles to relativistic energies in their blast waves by the process of diffusive shock…

GeV and TeV emission from the forward shocks of supernova remnants (SNRs) indicates that they are capable particle accelerators, making them promising sources of Galactic cosmic rays (CRs). However, it remains uncertain whether this…

高能天体物理现象 · 物理学 2023-08-23 N. Corso , R. Diesing , D. Caprioli

The galactic cosmic rays are generally believed to be originated in supernova remnants (SNRs), produced in diffusive shock acceleration (DSA) process in supernova blast waves driven by expanding SNRs. One of the key unsettled issue in SNR…

高能天体物理现象 · 物理学 2019-05-21 Prabir Banik , Arunava Bhadra

Supernova remnants (SNRs) have been regarded for many decades as the sources of Galactic cosmic rays (CRs) up to a few PeV. However, only with the advent of Fermi-LAT it has been possible to detect - at least in some SNRs - \gamma-rays…

高能天体物理现象 · 物理学 2013-03-12 Damiano Caprioli

In the past few years, gamma-ray astronomy has entered a golden age thanks to two major breakthroughs: Cherenkov telescopes on the ground and the Large Area Telescope (LAT) onboard the Fermi satellite. The sample of supernova remnants…

高能天体物理现象 · 物理学 2015-10-06 John W. Hewitt , Marianne Lemoine-Goumard

Supernova remnants (SNRs) are believed to be the primary location of the acceleration of Galactic cosmic rays, via diffusive shock (Fermi) acceleration. Despite considerable theoretical work the precise details are still unknown, in part…

天体物理学 · 物理学 2008-11-26 Michael D. Stage , Glenn E. Allen , John C. Houck , John E. Davis

While supernova remnants (SNRs) have long been considered prime candidates for the source of cosmic rays, at least to energies up to ~10^14 eV, it is only over the past several years that direct evidence of such energetic particles in SNRs…

天体物理学 · 物理学 2007-05-23 Patrick Slane

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…

高能天体物理现象 · 物理学 2017-08-23 Pasquale Blasi

We investigate hypernova (hyper-energetic supernova) and gamma-ray burst (GRB) remnants in our Galaxy as TeV gamma-ray sources, particularly in the role of potential TeV unidentified sources, which have no clear counterpart at other…

高能天体物理现象 · 物理学 2015-04-23 Kunihito Ioka , Peter Meszaros

Two main physical mechanisms are used to explain supernova explosions: thermonuclear explosion of a white dwarf(Type Ia) and core collapse of a massive star (Type II and Type Ib/Ic). Type Ia supernovae serve as distance indicators that led…

太阳与恒星天体物理 · 物理学 2015-01-21 Lingzhi Wang , Xiaohong Cui , Hui Zhu , Wenwu Tian , Xiaofeng Wang