Cosmic-ray acceleration and escape from supernova remnants

A. R. Bell; K. M. Schure; B. Reville; G. Giacinti

doi:10.1093/mnras/stt179

Cosmic-ray acceleration and escape from supernova remnants

A. R. Bell^*, K. M. Schure, B. Reville, G. Giacinti

^*Corresponding author for this work

School of Mathematics and Physics

Research output: Contribution to journal › Article › peer-review

246 Citations (Scopus)

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Abstract

Galactic cosmic-ray (CR) acceleration to the knee in the spectrum at a few PeV is only possible if the magnetic field ahead of a supernova remnant (SNR) shock is strongly amplified by CRs escaping the SNR. A model formulated in terms of the electric charge carried by escaping CRs predicts the maximum CR energy and the energy spectrum of CRs released into the surrounding medium. We find that historical SNRs such as Cas A, Tycho and Kepler may be expanding too slowly to accelerate CRs to the knee at the present time.

Original language	English
Pages (from-to)	415-429
Journal	Monthly Notices of the Royal Astronomical Society
Volume	431
Issue number	1
DOIs	https://doi.org/10.1093/mnras/stt179
Publication status	Published - May 2013

Keywords

ISM: supernova remnants
shock waves
DIFFUSIVE SHOCK ACCELERATION
PARTICLE-ACCELERATION
ASTROPHYSICAL SHOCKS
acceleration of particles
MAGNETIC-FIELD AMPLIFICATION
magnetic fields
cosmic rays
HIGH-ENERGY
STREAMING INSTABILITY
NONLINEAR AMPLIFICATION
LASER-PRODUCED PLASMAS
WAVE DISSIPATION
BOLTZMANN-EQUATION

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Cosmic-ray acceleration and escape from supernova remnants
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Cite this

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title = "Cosmic-ray acceleration and escape from supernova remnants",

abstract = "Galactic cosmic-ray (CR) acceleration to the knee in the spectrum at a few PeV is only possible if the magnetic field ahead of a supernova remnant (SNR) shock is strongly amplified by CRs escaping the SNR. A model formulated in terms of the electric charge carried by escaping CRs predicts the maximum CR energy and the energy spectrum of CRs released into the surrounding medium. We find that historical SNRs such as Cas A, Tycho and Kepler may be expanding too slowly to accelerate CRs to the knee at the present time.",

keywords = "ISM: supernova remnants, shock waves, DIFFUSIVE SHOCK ACCELERATION, PARTICLE-ACCELERATION, ASTROPHYSICAL SHOCKS, acceleration of particles, MAGNETIC-FIELD AMPLIFICATION, magnetic fields, cosmic rays, HIGH-ENERGY, STREAMING INSTABILITY, NONLINEAR AMPLIFICATION, LASER-PRODUCED PLASMAS, WAVE DISSIPATION, BOLTZMANN-EQUATION",

author = "Bell, {A. R.} and Schure, {K. M.} and B. Reville and G. Giacinti",

year = "2013",

month = may,

doi = "10.1093/mnras/stt179",

language = "English",

volume = "431",

pages = "415--429",

journal = "Monthly Notices of the Royal Astronomical Society",

issn = "0035-8711",

publisher = "Oxford University Press",

number = "1",

}

TY - JOUR

T1 - Cosmic-ray acceleration and escape from supernova remnants

AU - Bell, A. R.

AU - Schure, K. M.

AU - Reville, B.

AU - Giacinti, G.

PY - 2013/5

Y1 - 2013/5

N2 - Galactic cosmic-ray (CR) acceleration to the knee in the spectrum at a few PeV is only possible if the magnetic field ahead of a supernova remnant (SNR) shock is strongly amplified by CRs escaping the SNR. A model formulated in terms of the electric charge carried by escaping CRs predicts the maximum CR energy and the energy spectrum of CRs released into the surrounding medium. We find that historical SNRs such as Cas A, Tycho and Kepler may be expanding too slowly to accelerate CRs to the knee at the present time.

AB - Galactic cosmic-ray (CR) acceleration to the knee in the spectrum at a few PeV is only possible if the magnetic field ahead of a supernova remnant (SNR) shock is strongly amplified by CRs escaping the SNR. A model formulated in terms of the electric charge carried by escaping CRs predicts the maximum CR energy and the energy spectrum of CRs released into the surrounding medium. We find that historical SNRs such as Cas A, Tycho and Kepler may be expanding too slowly to accelerate CRs to the knee at the present time.

KW - ISM: supernova remnants

KW - shock waves

KW - DIFFUSIVE SHOCK ACCELERATION

KW - PARTICLE-ACCELERATION

KW - ASTROPHYSICAL SHOCKS

KW - acceleration of particles

KW - MAGNETIC-FIELD AMPLIFICATION

KW - magnetic fields

KW - cosmic rays

KW - HIGH-ENERGY

KW - STREAMING INSTABILITY

KW - NONLINEAR AMPLIFICATION

KW - LASER-PRODUCED PLASMAS

KW - WAVE DISSIPATION

KW - BOLTZMANN-EQUATION

U2 - 10.1093/mnras/stt179

DO - 10.1093/mnras/stt179

M3 - Article

SN - 0035-8711

VL - 431

SP - 415

EP - 429

JO - Monthly Notices of the Royal Astronomical Society

JF - Monthly Notices of the Royal Astronomical Society

IS - 1

ER -

Cosmic-ray acceleration and escape from supernova remnants

Abstract

Keywords

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