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Related papers: VHE Gamma-ray supernova remnants

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Supernova remnants (SNRs) have emerged as one of the largest source classes in very-high-energy (VHE; E>0.1,TeV) astronomy. Many of the now known VHE gamma-ray emitting SNRs have been discovered by the H.E.S.S. imaging Cherenkov telescope…

Astrophysics of Galaxies · Physics 2019-08-14 P. Hofverberg , R. C. G. Chaves , J. Méhault , M. de Naurois

If supernova remnants (SNRs) are the sites of cosmic-ray acceleration, the associated nuclear interactions should result in observable fluxes of TeV gamma-rays from the nearest SNRs. Measurements of the gamma-ray flux from six nearby,…

The investigation of VHE gamma-ray sources by any methods, including mirror Cherenkov telescopes, touches on the problem of the cosmic ray origin and, accordingly, the role of the Galaxy in their generation. The SHALON observations have…

High Energy Astrophysical Phenomena · Physics 2016-02-05 Vera G. Sinitsyna , Vera Y. Sinitsyna

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…

High Energy Astrophysical Phenomena · Physics 2015-10-06 John W. Hewitt , Marianne Lemoine-Goumard

Supernova Remnants (SNRs) are believed to be the acceleration sites of galactic cosmic rays. As such they are expected to produce Very High Energy (VHE) gamma-rays through hadronic and/or electromagnetic scenarios, hence they are natural…

High Energy Astrophysical Phenomena · Physics 2019-08-13 E. Carmona , M. T. Costado , L. Font , J. Zapatero

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

Supernova remnants (SNRs) are the prime candidates for the acceleration of the Galactic Cosmic Rays. Tracers for interactions of Cosmic Rays with ambient material are gamma rays at TeV energies, which can be observed with ground based…

High Energy Astrophysical Phenomena · Physics 2019-08-14 Nukri Komin

A gas cloud near a supernova remnant (SNR) provides a target for pp-collisions leading to subsequent gamma-ray emission through neutral pion decay. The assumption of a power-law ambient spectrum of accelerated particles with index near -2…

Astrophysics · Physics 2009-02-25 I. V. Moskalenko , T. A. Porter , M. A. Malkov , P. H. Diamond

Supernova remnants (SNRs) are thought to be the most promising 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 2022-01-19 Hiromasa Suzuki , Aya Bamba , Ryo Yamazaki , Yutaka Ohira

New generational very-high-energy telescope arrays have been detecting more than 120 TeV {\gamma}-ray sources. Multi-wavelength observations on these Gamma-ray sources have proven to be robust in shedding light on their nature. The coming…

High Energy Astrophysical Phenomena · Physics 2013-02-04 Wenwu Tian , Jianli Zhang

The on-going H.E.S.S. Galactic Plane Survey continues to reveal new sources of VHE gamma-rays. In particular, recent re-observations of the region around the shell-type supernova remnant (SNR) G318.2+0.1 have resulted in the discovery of…

Astrophysics of Galaxies · Physics 2019-08-14 P. Hofverberg , R. C. G. Chaves , A. Fiasson , K. Kosack , J. Méhault , E. de Onã Wilhelmi

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 widely believed to be the principal source of galactic cosmic rays. Such energetic particles can produce gamma-rays and lower energy photons via interactions with the ambient plasma. In this paper, we present…

A significant fraction of the energy density of the interstellar medium is in the form of high-energy charged particles (cosmic rays). The origin of these particles remains uncertain. Although it is generally accepted that the only sources…

Astrophysics · Physics 2012-08-27 H. E. S. S. Collaboration , : , F. Aharonian

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

A review of the possible relationship between gamma-ray sources and supernova remnants (SNRs) is presented. Particular emphasis is given to the analysis of the observational status of the problem of cosmic ray acceleration at SNR shock…

Recent results obtained with gamma-ray satellites have established supernova remnants as accelerators of GeV hadronic cosmic rays. In such processes, CRs accelerated in SNR shocks interact with particles from gas clouds in their…

High Energy Astrophysical Phenomena · Physics 2020-08-14 Emma de Ona Wilhelmi , Iurii Sushch , Robert Brose , Enrique Mestre , Yang Su , Roberta Zanin

Supernova remnants (SNRs) are the outcome of supernovae (SNe, either core-collapse or thermonuclear). The remnant results from the interaction between the stellar ejecta and the ambient medium around the progenitor star. Young SNRs are…

High Energy Astrophysical Phenomena · Physics 2020-02-18 Gilles Ferrand

Supernova remnants (SNRs) have long been considered as one of the most promising sources of Galactic cosmic rays. In the SNR paradigm, petaelectronvolt (PeV) proton acceleration may only be feasible at the early evolution stage, lasting a…

High Energy Astrophysical Phenomena · Physics 2021-06-02 Chong Ge , Ruo-Yu Liu , Shu Niu , Yang Chen , Xiang-Yu Wang

Very high energy (VHE) gamma-ray observations have proven to be very successful in localizing Galactic acceleration sites of VHE particles. Observations of shell-type supernova remnants have confirmed that particles are accelerated to VHE…

Astrophysics · Physics 2009-11-13 G. Pühlhofer