English
Related papers

Related papers: Nonthermal Radiation from Type Ia Supernova Remnan…

200 papers

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

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

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…

High Energy Astrophysical Phenomena · Physics 2011-04-18 E. G. Berezhko , L. T. Ksenofontov , H. J. Voelk

We explore nonlinear effects of wave-particle interactions on the diffusive shock acceleration (DSA) process in Type Ia-like, SNR blast waves, by implementing phenomenological models for magnetic field amplification, Alfv'enic drift, and…

High Energy Astrophysical Phenomena · Physics 2015-06-17 Hyesung Kang , T. W. Jones , Paul P. Edmon

Nonlinear kinetic theory of cosmic ray (CR) acceleration in supernova remnants (SNRs) is used to investigate the properties of Kepler's SNR and, in particular, to predict the gamma-ray spectrum expected from this SNR. Observations of the…

Astrophysics · Physics 2007-05-23 E. G. Berezhko , L. T. Ksenofontov , H. J. Voelk

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…

The strong shocks in young supernova remnants (SNRs) should accelerate cosmic rays (CRs) and no doubt exists that \rel electrons are produced in SNRs. However, direct and convincing evidence that SNRs produce CR nuclei has not yet been…

Astrophysics · Physics 2009-11-11 Donald C. Ellison , Gamil Cassam-Chenai

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

The nonlinear kinetic model of cosmic ray (CR) acceleration in supernova remnants (SNRs) is used to describe the relevant properties of Cassiopeia A (Cas A). In order to reproduce the SNR's observed size, expansion rate and thermal X-ray…

Astrophysics · Physics 2011-05-23 E. G. Berezhko , G. Puehlhofer , H. J. Voelk

Based largely on energy budget considerations and the observed cosmic-ray (CR) ionic composition, supernova remnant (SNR) blast waves are the most likely sources of CR ions with energies at least up to the "knee" near 3 PeV. Shocks in young…

High Energy Astrophysical Phenomena · Physics 2015-06-15 Shiu-Hang Lee , Patrick Slane , Donald C. Ellison , Shigehiro Nagataki , Daniel J. Patnaude

A nonlinear kinetic model of cosmic ray (CR) acceleration in supernova remnants (SNRs) is used to describe the properties of Tycho's SNR. Observations of the expansion characteristics and of the nonthermal radio and X-ray emission spectra,…

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

The evolution of the radio emission of shell-type Supernova remnants (SNRs) is modeled within the framework of the simple and commonly used assumptions that the mechanism of diffusive shock acceleration (DSA) is responsible for generating…

Astrophysics · Physics 2009-11-11 Abdul Asvarov

We investigate the effects of the efficient production of cosmic rays on the evolution of supernova remnants (SNRs) in the adiabatic Sedov-Taylor phase. We model the SNR by coupling the hydrodynamic evolution with nonlinear diffusive shock…

High Energy Astrophysical Phenomena · Physics 2015-05-27 Daniel Castro , Patrick Slane , Daniel J. Patnaude , Donald C. Ellison

The contribution of galactic supernova remnants (SNRs) to the origin of cosmic rays (CRs) is an important open question in modern astrophysics. Broadband non-thermal emission is a useful proxy for probing the energy budget and production…

High Energy Astrophysical Phenomena · Physics 2022-09-07 Ryosuke Kobashi , Haruo Yasuda , Shiu-Hang Lee

To better model the efficient production of cosmic rays (CRs) in supernova remnants (SNRs) with the associated coupling between CR production and SNR dynamics, we have generalized an existing cr-hydro-NEI code (i.e., Ellison et al. 2012) to…

High Energy Astrophysical Phenomena · Physics 2015-06-04 Shiu-Hang Lee , Donald C. Ellison , Shigehiro Nagataki

The explosion mechanism behind Type Ia supernovae is a matter of continuing debate. The diverse attempts to identify or at least constrain the physical processes involved in the explosion have been only partially successful so far. In this…

Astrophysics · Physics 2009-11-07 Carles Badenes , Eduardo Bravo , Kazimierz J. Borkowski , Inmaculada Dominguez

We present a 3-dimensional model of supernova remnants (SNRs) where the hydrodynamical evolution of the remnant is modeled consistently with nonlinear diffusive shock acceleration occuring at the outer blast wave. The model includes…

Astrophysics · Physics 2009-11-13 Shiu-Hang Lee , Tsuneyoshi Kamae , Donald C. Ellison

The properties of the Galactic supernova remnant (SNR) SN 1006 are theoretically re-analyzed in the light of the recent H.E.S.S. results. Nonlinear kinetic theory is used to determine the momentum spectrum of cosmic rays (CRs) in space and…

High Energy Astrophysical Phenomena · Physics 2015-01-13 E. G. Berezhko , L. T. Ksenofontov , H. J. Voelk

We calculate synchrotron radio emission and gamma-ray emission due to bremsstrahlung, inverse-Compton scattering and $pi^0$-decay from the remnant of supernova which exploded in the circumstellar matter (CSM) formed by the progenitor's…

High Energy Astrophysical Phenomena · Physics 2015-06-15 Takafumi Shimizu , Kuniaki Masai , Katsuji Koyama

Abbreviated Abstract: A kinetic model of particle acceleration in supernova remnants (SNRs) is extended to study the cosmic ray (CR) and associated high energy gamma-ray production during SN shock propagation through the inhomogeneous…

Astrophysics · Physics 2007-05-23 Evgeny G. Berezhko , Heinrich J. Voelk
‹ Prev 1 2 3 10 Next ›