ON COSMIC-RAY PRODUCTION EFFICIENCY AT SU0PERNOVA REMNANT SHOCKS PROPAGATING INTO REALISTIC DIFFUSE INTERSTELLAR MEDIUM
@article{Shimoda2014ONCP, title={ON COSMIC-RAY PRODUCTION EFFICIENCY AT SU0PERNOVA REMNANT SHOCKS PROPAGATING INTO REALISTIC DIFFUSE INTERSTELLAR MEDIUM}, author={Jiro Shimoda and Tsuyoshi Inoue and Yutaka Ohira and Ryo Yamazaki and Aya Bamba and Jacco Vink}, journal={The Astrophysical Journal}, year={2014}, volume={803} }
Using three-dimensional magnetohydrodynamics simulations, we show that the efficiency of cosmic-ray (CR) production in supernova remnants is over-predicted if it could be estimated based on proper motion measurements of Hα filaments in combination with shock-jump conditions. Density fluctuations of the upstream medium cause shock waves to be rippled and oblique almost everywhere. The kinetic energy of the shock wave is transferred into downstream turbulence as well as thermal energy related to…
23 Citations
On Cosmic-Ray Production Efficiency at Realistic Supernova Remnant Shocks
- Physics
- 2016
We demonstrate by using three-dimensional magnetohydrodynamics simulations that the cosmicray (CR) production efficiency at supernova remnants (SNRs) is over-predicted if it is based on proper motion…
On measuring the cosmic-ray production rate in supernova remnant shocks by polarized Balmer line emission
- PhysicsProceedings of 36th International Cosmic Ray Conference — PoS(ICRC2019)
- 2019
Linearly polarized Balmer line emissions from supernova remnant shocks are studied taking into account the energy loss of the shock owing to the production of nonthermal particles. The polarization…
Discovery of Kolmogorov-like magnetic energy spectrum in Tycho’s supernova remnant by two-point correlations of synchrotron intensity
- PhysicsMonthly Notices of the Royal Astronomical Society
- 2018
The spectral slope of the magnetic energy in supernova remnants (SNRs) can be obtained by analysis of spatial two-point correlation functions of synchrotron intensities. This method has been…
THE ORIGIN OF RADIALLY ALIGNED MAGNETIC FIELDS IN YOUNG SUPERNOVA REMNANTS
- Physics
- 2013
It has been suggested by radio observations of polarized synchrotron emissions that downstream magnetic fields in some young supernova remnants (SNRs) are oriented radially. We study the magnetic…
A SYSTEMATIC STUDY OF THE THERMAL AND NONTHERMAL EMISSION IN THE SUPERNOVA REMNANT RCW 86 WITH SUZAKU
- Physics
- 2016
Diffusive shock acceleration by the shockwaves in supernova remnants (SNRs) is widely accepted as the dominant source for Galactic cosmic rays. However, it is unknown what determines the maximum…
THE REFINED SHOCK VELOCITY OF THE X-RAY FILAMENTS IN THE RCW 86 NORTHEAST RIM
- Physics
- 2016
A precise measurement of shock velocities is crucial for constraining the mechanism and efficiency of cosmic-ray (CR) acceleration at supernova remnant (SNR) shock fronts. The northeastern rim of the…
Ion-Ion Equilibration and Particle Distributions in a 3000 km s -1 Shock in SN 1006
- Physics
- 2017
SN 1006 is the most attractive target for investigating the physics of collisionless shock waves faster than 2000 . We obtained UV and optical spectra and an Hα image of a 3000 shock driven by a…
Diagnosing Turbulent Magnetic Field in Supernova Remnants
- PhysicsFrontiers in Astronomy and Space Sciences
- 2022
We review recent investigations of the statistical nature of turbulent magnetic fields in supernova remnants. After a brief presentation of the role of the magnetic field in the cosmic-ray…
Cosmic-ray production from neutron escape in microquasar jets
- Physics
- 2021
Context. The origin of Galactic cosmic rays remains a matter of debate, but supernova remnants are commonly considered to be the main place where high-energy cosmic rays are accelerated.…
Interplay between physics and geometry in Balmer filaments: the case of SN 1006
- PhysicsMonthly Notices of the Royal Astronomical Society
- 2018
The analysis of Balmer-dominated emission in supernova remnants is potentially a very powerful way to derive information on the shock structure, on the physical conditions of the ambient medium and…
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THE ORIGIN OF RADIALLY ALIGNED MAGNETIC FIELDS IN YOUNG SUPERNOVA REMNANTS
- Physics
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It has been suggested by radio observations of polarized synchrotron emissions that downstream magnetic fields in some young supernova remnants (SNRs) are oriented radially. We study the magnetic…
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