Cosmic Ray (Stochastic) Acceleration from a Background Plasma

V. A. Dogiel; K. S. Cheng; D. O. Chernyshov; A. D. Erlykin; C. M. Ko; A. W. Wolfendale

doi:10.1016/j.nuclphysbps.2018.07.011

Cosmic Ray (Stochastic) Acceleration from a Background Plasma

V. A. Dogiel, K. S. Cheng, D. O. Chernyshov, A. D. Erlykin, C. M. Ko, A. W. Wolfendale

Graduate Institute of Astronomy

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

Abstract

We give a short review of processes of stochastic acceleration in the Galaxy. We discuss: how to estimate correctly the number of accelerated particles, and at which condition the stochastic mechanism is able to generate power-law nonthermal spectra. We present an analysis of stochastic acceleration in the Galactic halo and discuss whether this mechanism can be responsible for production of high energy electrons there, which emit gamma-ray and microwave emission from the giant Fermi bubbles. Lastly, we discuss whether the effects of stochastic acceleration can explain the CR distribution in the Galactic disk (CR gradient).

Original language	English
Pages (from-to)	72-79
Number of pages	8
Journal	Nuclear and Particle Physics Proceedings
Volume	297-299
DOIs	https://doi.org/10.1016/j.nuclphysbps.2018.07.011
State	Published - 1 Apr 2018

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10.1016/j.nuclphysbps.2018.07.011

Acceleration Constant and Superposition in Modified Newtonian Dynamics(2/3)
Ko, C.-M. (PI)
1/08/17 → 31/07/18
Project: Research
Processes of High Energy Particle Production in Space Plasmas(3/3)
Ko, C.-M. (PI)
1/01/17 → 31/12/17
Project: Research

Cite this

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title = "Cosmic Ray (Stochastic) Acceleration from a Background Plasma",

abstract = "We give a short review of processes of stochastic acceleration in the Galaxy. We discuss: how to estimate correctly the number of accelerated particles, and at which condition the stochastic mechanism is able to generate power-law nonthermal spectra. We present an analysis of stochastic acceleration in the Galactic halo and discuss whether this mechanism can be responsible for production of high energy electrons there, which emit gamma-ray and microwave emission from the giant Fermi bubbles. Lastly, we discuss whether the effects of stochastic acceleration can explain the CR distribution in the Galactic disk (CR gradient).",

author = "Dogiel, {V. A.} and Cheng, {K. S.} and Chernyshov, {D. O.} and Erlykin, {A. D.} and Ko, {C. M.} and Wolfendale, {A. W.}",

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AU - Dogiel, V. A.

AU - Cheng, K. S.

AU - Chernyshov, D. O.

AU - Erlykin, A. D.

AU - Ko, C. M.

AU - Wolfendale, A. W.

PY - 2018/4/1

Y1 - 2018/4/1

N2 - We give a short review of processes of stochastic acceleration in the Galaxy. We discuss: how to estimate correctly the number of accelerated particles, and at which condition the stochastic mechanism is able to generate power-law nonthermal spectra. We present an analysis of stochastic acceleration in the Galactic halo and discuss whether this mechanism can be responsible for production of high energy electrons there, which emit gamma-ray and microwave emission from the giant Fermi bubbles. Lastly, we discuss whether the effects of stochastic acceleration can explain the CR distribution in the Galactic disk (CR gradient).

AB - We give a short review of processes of stochastic acceleration in the Galaxy. We discuss: how to estimate correctly the number of accelerated particles, and at which condition the stochastic mechanism is able to generate power-law nonthermal spectra. We present an analysis of stochastic acceleration in the Galactic halo and discuss whether this mechanism can be responsible for production of high energy electrons there, which emit gamma-ray and microwave emission from the giant Fermi bubbles. Lastly, we discuss whether the effects of stochastic acceleration can explain the CR distribution in the Galactic disk (CR gradient).

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M3 - 期刊論文

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VL - 297-299

SP - 72

EP - 79

JO - Nuclear and Particle Physics Proceedings

JF - Nuclear and Particle Physics Proceedings

ER -

Cosmic Ray (Stochastic) Acceleration from a Background Plasma

Abstract

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Projects

Acceleration Constant and Superposition in Modified Newtonian Dynamics(2/3)

Processes of High Energy Particle Production in Space Plasmas(3/3)

Cite this