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Related papers: Simulating TeV gamma-ray morphologies of shell-typ…

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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…

High Energy Astrophysical Phenomena · Physics 2026-03-31 P. Cristofari , G. Emery , T. Lubrano di Vavaria , H. Costantini , F. Cassol , M. -S. Carrasco , B. Le Nagat Neher

Amongst the population of TeV gamma-ray sources detected with the High Energy Stereoscopic System (H.E.S.S.) in the Galactic plane, clearly identified supernova remnant (SNR) shells constitute a small but precious source class. TeV-selected…

Observations of very-high-energy (VHE) gamma-ray emission from supernova remnants (SNR) established them as sources of accelerated particles up to energies of 100 TeV. The dominant process - leptonic or hadronic - responsible for the VHE…

High Energy Astrophysical Phenomena · Physics 2013-07-23 Stephanie Häffner , Ira Jung , Christian Stegmann

Supernova Remnants (SNRs) are believed to be acceleration sites of Galactic cosmic rays. Therefore, deep studies of these objects are instrumental for an understanding of the high energy processes in our Galaxy. RX J0852.0-4622, also known…

High Energy Astrophysical Phenomena · Physics 2019-08-14 Manuel Paz Arribas , Ullrich Schwanke , Iurii Sushch , Nukri Komin , Fabio Acero , Stefan Ohm

SNRs are likely to be significant sources of Galactic cosmic rays up to the knee. They produce gamma rays in the very-high-energy (E>100 GeV) range mainly via two mechanisms: hadronic interactions of accelerated protons with the…

High Energy Astrophysical Phenomena · Physics 2023-08-23 Rowan Batzofin , Pierre Cristofari , Kathrin Egberts , Constantin Steppa

We present analytical and numerical studies of models of supernova-remnant (SNR) blast waves expanding into uniform media and interacting with a denser cavity wall, in one spatial dimension. We predict the nonthermal emission from such…

High Energy Astrophysical Phenomena · Physics 2017-01-23 Zhu Tang , Stephen P. Reynolds , Sean M. Ressler

Non-relativistic shocks accelerate ions to highly relativistic energies provided that the orientation of the magnetic field is closely aligned with the shock normal (quasi-parallel shock configuration). In contrast, quasi-perpendicular…

High Energy Astrophysical Phenomena · Physics 2018-06-13 M. Pais , C. Pfrommer , K. Ehlert , R. Pakmor

Supernova remnant (SNR) RX J1713.7-3946 is well known for its bright TeV gamma-ray emission with shell-like morphology. To constrain the hydrodynamical evolution, we have performed six times observations of the northwestern (NW) shell with…

High Energy Astrophysical Phenomena · Physics 2016-11-15 Naomi Tsuji , Yasunobu Uchiyama

We show here that highly polarized X-ray synchrotron radiation from young supernova remnants (SNRs) can be modeled within the framework of diffusive shock acceleration (DSA) and nonlinear magnetic turbulence generation.Cosmic ray…

High Energy Astrophysical Phenomena · Physics 2024-09-30 Andrei. M. Bykov , Sergei. M. Osipov , Yury. A. Uvarov , Donald. C. Ellison , Patrick Slane

(Aims.) SNR RX J1713.7-3946 is perhaps one of the best observed shell-type supernova remnants with emissions dominated by energetic particles accelerated near the shock front. The nature of the TeV emission, however, is an issue still open…

High Energy Astrophysical Phenomena · Physics 2015-05-19 Zhonghui Fan , Siming Liu , Qiang Yuan , Lyndsay Fletcher

We present calculations of expected continuum emissions from Sedov-Taylor phase Type Ia supernova remnants (SNRs), using the energy spectra of cosmic ray (CR) electrons and protons from nonlinear diffusive shock acceleration (DSA)…

High Energy Astrophysical Phenomena · Physics 2015-05-27 Paul P. Edmon , Hyesung Kang , T. W. Jones , Renyi Ma

Context: HESS J1731-347 has been identified as one of the few TeV-bright shell-type supernova remnants (SNRs). These remnants are dominated by nonthermal emission, and the nature of TeV emission has been continuously debated for nearly a…

High Energy Astrophysical Phenomena · Physics 2015-06-19 Rui-zhi Yang , Xiao Zhang , Qiang Yuan , Siming Liu

Improved calculations of X-ray spectra for supernova remnants (SNRs) in the Sedov-Taylor phase are reported, which for the first time include reliable atomic data for Fe L-shell lines. This new set of Sedov models also allows for a partial…

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

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…

High Energy Astrophysical Phenomena · Physics 2019-05-08 Haruo Yasuda , Shiu-Hang Lee

For the case of Tycho's supernova remnant (SNR) we present the relation between the blast wave and contact discontinuity radii calculated within the nonlinear kinetic theory of cosmic ray (CR) acceleration in SNRs. It is demonstrated that…

Astrophysics · Physics 2008-11-26 H. J. Voelk , E. G. Berezhko , L. T. Ksenofontov

Observations show that the magnetic field in young supernova remnants (SNRs) is significantly stronger than can be expected from the compression of the circumstellar medium (CSM) by a factor of four expected for strong blast waves.…

Astrophysics of Galaxies · Physics 2009-08-05 K. M. Schure , J. Vink , A. Achterberg , R. Keppens

MAGIC and H.E.S.S experiments are the first to produce images of supernova remnats (SNRs) in TeV gamma-rays. The gamma-radiation are produced either by electrons (due to inverse-Compton scatterings) or protons (due to pion decays). We…

High Energy Astrophysical Phenomena · Physics 2011-09-13 V. Beshley , O. Petruk

We present new models for the forward and reverse shock thermal X-ray emission from core-collapse and Type Ia supernova remnants (SNRs) which include the efficient production of cosmic rays via non-linear diffusive shock acceleration (DSA).…

High Energy Astrophysical Phenomena · Physics 2015-06-22 Shiu-Hang Lee , Daniel J. Patnaude , Donald C. Ellison , Shigehiro Nagataki , Patrick O. Slane

Precise measurements of galactic cosmic rays revealed a significant difference between the rigidity spectral indices of protons and helium ions. This finding is a notable contrast to the commonly accepted theoretical prediction that…

High Energy Astrophysical Phenomena · Physics 2019-02-27 A. Hanusch , T. Liseykina , M. Malkov