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A nonlinear kinetic theory of cosmic ray (CR) acceleration in supernova remnants is employed to investigate the properties of the remnant SN 1987A. It is shown that a large downstream magnetic field ~10 mG is required to fit the existing…

天体物理学 · 物理学 2009-11-11 E. G. Berezhko , L. T. Ksenofontov

A nonlinear kinetic theory, combining cosmic-ray (CR) acceleration in supernova remnants (SNRs) with their gas dynamics, is used to re-examine the nonthermal properties of the remnant of SN 1987A for an extended evolutionary period of 5-50…

高能天体物理现象 · 物理学 2015-09-16 E. G. Berezhko , L. T. Ksenofontov , H. J. Voelk

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,…

天体物理学 · 物理学 2009-11-07 H. J. Voelk , E. G. Berezhko , L. T. Ksenofontov , G. P. Rowell

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…

高能天体物理现象 · 物理学 2015-01-13 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 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…

天体物理学 · 物理学 2009-11-07 E. G. Berezhko , L. T. Ksenofontov , H. J. Voelk

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…

天体物理学 · 物理学 2008-11-26 H. J. Voelk , E. G. Berezhko , L. T. Ksenofontov

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…

天体物理学 · 物理学 2007-05-23 Evgeny G. Berezhko , Heinrich J. Voelk

A nonlinear kinetic theory of cosmic ray (CR) acceleration in supernova remnants (SNRs) is employed to investigate the properties of SNR RX J1713.7-3946. Observations of the nonthermal radio and X-ray emission spectra as well as the…

天体物理学 · 物理学 2009-11-11 E. G. Berezhko , H. J. Voelk

Context: Cosmic rays are thought to be accelerated at supernova remnant (SNR) shocks, but conclusive evidence is lacking. Aims: New data from ground-based gamma-ray telescopes and the Large Area Telescope on the Fermi Gamma-ray Space…

高能天体物理现象 · 物理学 2015-06-11 C. D. Dermer , G. Powale

It has been known for over 50 years that the radio emission from shell supernova remnants (SNRs) indicates the presence of electrons with energies in the GeV range emitting synchrotron radiation. The discovery of nonthermal X-ray emission…

高能天体物理现象 · 物理学 2015-05-20 S. P. Reynolds

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…

天体物理学 · 物理学 2008-11-26 E. G. Berezhko

Analyses of the X-ray data of the five young shell-type supernova remnants Cas A, Kepler, Tycho, SN 1006, and RCW 86 suggest that some of the X-ray emission of these sources is non-thermal. This non-thermal emission is qualitatively…

天体物理学 · 物理学 2007-05-23 G. E. Allen , E. V. Gotthelf , R. Petre

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…

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

A rapidly growing amount of evidences, mostly coming from the recent gamma-ray observations of Galactic supernova remnants (SNRs), is seriously challenging our understanding of how particles are accelerated at fast shocks. The cosmic-ray…

高能天体物理现象 · 物理学 2015-06-05 Damiano Caprioli

The time-dependent nonlinear kinetic theory for cosmic ray (CR) acceleration in supernova remnants (SNRs) is applied studying the properties of the synchrotron emission from SNRs, in particular, the surface brightness-diameter ($\Sigma-D$)…

天体物理学 · 物理学 2009-11-10 E. G. Berezhko , H. J. Völk

We present an update on the results of our monitoring observations of the X-ray remnant of supernova (SN) 1987A with the {\it Chandra X-Ray Observatory}. As of 2002 December, we have performed a total of seven observations of SN 1987A. The…

天体物理学 · 物理学 2009-11-10 Sangwook Park , Svetozar A. Zhekov , David N. Burrows , Gordon P. Garmire , Richard McCray

If cosmic rays with energies <100 TeV originate in the galaxy and are accelerated in shock waves in shell-type supernova remnants (SNRs), gamma-rays will be produced as the result of proton and electron interactions with the local…

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

The properties of the - presumably - youngest Galactic supernova remnant (SNR) G1.9+0.3 are investigated within the framework of nonlinear kinetic theory of cosmic ray acceleration in SNRs. The observed angular size and expansion speed as…

高能天体物理现象 · 物理学 2011-03-07 L. T. Ksenofontov , H. J. Voelk , E. G. Berezhko

Calculations of the expected TeV $\gamma$-ray emission, produced by accelerated cosmic rays (CRs) in nuclear collisions, from supernova remnants evolving in a uniform interstellar medium (ISM) are presented. The aim is to study the…

天体物理学 · 物理学 2009-10-31 Evgeny G. Berezhko , Heinrich J. Voelk
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