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Related papers: Cosmic Rays and the Monogem Supernova Remnant

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Several groups have reported a possible excess of primary electrons at high energies with the joint fit of the positron fraction and total electron/positron spectra. With the latest release of high-precision electron/positron spectra…

High Energy Astrophysical Phenomena · Physics 2022-01-25 Tian-Peng Tang , Zi-Qing Xia , Zhao-Qiang Shen , Lei Zu , Lei Feng , Qiang Yuan , Yi-Zhong Fan , Jian Wu

We analyse the results of recent measurements of nonthermal emission from individual supernova remnants (SNRs) and their correspondence to the nonlinear kinetic theory of cosmic ray (CR) acceleration in SNRs. It is shown that the theory…

Astrophysics · Physics 2008-11-26 E. G. Berezhko

The direct measurements of cosmic rays (CRs), after correction for the propagation effects in the interstellar medium, indicate that their source spectra are likely to be significantly steeper than the canonical $E^{-2}$ spectrum predicted…

High Energy Astrophysical Phenomena · Physics 2019-10-08 Mikhail Malkov , Felix Aharonian

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…

Astrophysics · Physics 2007-08-01 E. G. Berezhko , G. Pühlhofer , H. J. Völk

It is generally regarded that the bulk of cosmic rays originate in the Galaxy and that those below the 'knee' (the rapid steepening in the energy spectrum) at a few PeV come from Galactic supernovae, the particles being accelerated by the…

Astrophysics · Physics 2009-11-13 A. D. Erlykin , A. W. Wolfendale

The cosmic-ray spectrum up to the knee ($E\sim 10^{15}$ eV) is attributed to acceleration processes taking place at the blastwaves which bound supernova remnants. Theoretical predictions give a similar estimate for the maximum energy which…

Astrophysics · Physics 2009-10-31 Eric van der Swaluw , Abraham Achterberg , Yves A. Gallant

The nonlinear kinetic model of cosmic ray (CR) acceleration in supernova remnants (SNRs) is used to describe the properties of the remnant of SN 1006. It is shown, that the theory fits the existing data in a satisfactory way within a set of…

Astrophysics · Physics 2009-11-07 E. G. Berezhko , L. T. Ksenofontov , H. J. Voelk

Cosmic ray (CR) knees (spectral steepenings) encode information on CR accelerator populations. We seek population features that imprint onto knee observables in a manner that is robust enough to be discernible even in the presence of…

High Energy Astrophysical Phenomena · Physics 2025-11-06 Myrto Falalaki , Vasiliki Pavlidou

Recent results from the KASCADE extensive air shower experiment are presented. After briefly reviewing the status of the experiment we report on tests of hadronic interaction models and emphasize the progress being made in understanding the…

Astrophysics · Physics 2007-05-23 K. -H. Kampert , KASCADE-Collaboration

Supernova remnants (SNRs) are one of the most energetic astrophysical events and are thought to be the dominant source of Galactic cosmic rays (CRs). A recent report on observations from the Fermi satellite has shown a signature of pion…

High Energy Astrophysical Phenomena · Physics 2015-08-26 Soonyoung Roh , Shu-ichiro Inutsuka , Tsuyoshi Inoue

Supernova remnants (SNRs) are thought to be the primary sources of Galactic Cosmic Rays (CRs). In the last few years, the wealth of gamma-ray data collected by GeV and TeV instruments has provided important information about particle…

High Energy Astrophysical Phenomena · Physics 2016-11-02 Martina Cardillo , Elena Amato , Pasquale Blasi

Pinpointing a pulsar in its parent supernova remnant (SNR) or resulting pulsar wind nebula (PWN) is key for understanding its formation history, and the pulsar wind mechanism. Yet, only about half the SNRs and PWNe appear associated with a…

High Energy Astrophysical Phenomena · Physics 2019-03-13 Samayra Straal , Joeri van Leeuwen

Observations of cosmic rays have been improved at all energies, both in terms of higher statistics and reduced systematics. As a result, the all particle cosmic ray energy spectrum starts to exhibit more structures than could be seen…

High Energy Astrophysical Phenomena · Physics 2015-06-15 Karl-Heinz Kampert

Recent cosmic ray (CR) experiments discovered that the CR spectra experience a remarkable hardening for rigidity above several hundred GV. We propose that this is caused by the superposition of the CR energy spectra of many sources that…

High Energy Astrophysical Phenomena · Physics 2011-09-08 Qiang Yuan , Bing Zhang , Xiao-Jun Bi

We investigate non-thermal electron and nuclei energy losses within the binary neutron star merger remnant produced by the event GW170817. The lack of a cooling feature within the detected synchrotron emission from the source is used to…

High Energy Astrophysical Phenomena · Physics 2018-11-06 Xavier Rodrigues , Daniel Biehl , Denise Boncioli , Andrew M. Taylor

The proof of cosmic ray (CR) origin in supernova remnants (SNR) must hinge on full consistency of the CR acceleration theory with the observations; direct proof is impossible because of the orbit stochasticity of CR particles. Recent…

Astrophysics of Galaxies · Physics 2016-10-11 M. A. Malkov , P. H. Diamond , R. Z. Sagdeev

In the last two decades, different advances with extensive air shower (EAS) experiments have allowed to unveil several details about the composition and energy spectrum of galactic cosmic rays from some TeV up to several hundreds of PeV,…

High Energy Astrophysical Phenomena · Physics 2025-09-23 J. C. Arteaga-Velázquez

Supernova remnants (SNRs) are thought to be the most plausible sources of Galactic cosmic rays. One of the principal questions is whether they are accelerating particles up to the maximum energy of Galactic cosmic rays ($\sim$PeV). In this…

High Energy Astrophysical Phenomena · Physics 2023-10-31 Hiromasa Suzuki , Aya Bamba , Ryo Yamazaki , Yutaka Ohira

Galactic cosmic rays up to energies of around 10^15 eV are assumed to originate in supernova remnants (SNRs). The shock wave of a young SNR like SN 1006 AD can accelerate electrons to energies greater than 1 TeV, where they can produce…

Astrophysics · Physics 2009-10-31 K. K. Dyer , S. P. Reynolds , K. J. Borkowski

Supernova remnants (SNRs) are believed to be capable of accelerating cosmic rays (CRs) to PeV energies. SNR G106.3+2.7 is a prime PeVatron candidate. It is formed by a head region, where the pulsar J2229+6114 and its boomerang-shaped pulsar…

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