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Title: Particle acceleration during magnetic reconnection in a low-beta pair plasma

Abstract

Plasma energization through magnetic reconnection in the magnetically dominated regime featured by low plasma beta (β=8πnkT0/B2 <<1) and/or high magnetization (σ=B2/(4πnmc2)>>1) is important in a series of astrophysical systems such as solar flares, pulsar wind nebula, and relativistic jets from black holes. In this paper, we review the recent progress on kinetic simulations of this process and further discuss plasma dynamics and particle acceleration in a low-β reconnection layer that consists of electron–positron pairs. We also examine the effect of different initial thermal temperatures on the resulting particle energy spectra. While earlier papers have concluded that the spectral index is smaller for higher σ, our simulations show that the spectral index approaches p = 1 for sufficiently low plasma β, even if σ~1. Since this predicted spectral index in the idealized limit is harder than most observations, it is important to consider effects that can lead to a softer spectrum such as open boundary simulations. Here, we also remark that the effects of three-dimensional reconnection physics and turbulence on reconnection need to be addressed in the future.

Authors:
 [1];  [1];  [1];  [2];  [3]
  1. Los Alamos National Lab. (LANL), Los Alamos, NM (United States)
  2. Univ. of Alabama in Huntsville, Huntsville, AL (United States)
  3. NASA Goddard Space Flight Center, Greenbelt, MD (United States)
Publication Date:
Research Org.:
Los Alamos National Lab. (LANL), Los Alamos, NM (United States)
Sponsoring Org.:
USDOE Laboratory Directed Research and Development (LDRD) Program
OSTI Identifier:
1338803
Alternate Identifier(s):
OSTI ID: 1420672
Report Number(s):
LA-UR-16-21885
Journal ID: ISSN 1070-664X
Grant/Contract Number:  
AC52-06NA25396
Resource Type:
Accepted Manuscript
Journal Name:
Physics of Plasmas
Additional Journal Information:
Journal Volume: 23; Journal Issue: 5; Journal ID: ISSN 1070-664X
Publisher:
American Institute of Physics (AIP)
Country of Publication:
United States
Language:
English
Subject:
43 PARTICLE ACCELERATORS; astronomy and astrophysics

Citation Formats

Guo, Fan, Li, Hui, Daughton, William, Li, Xiaocan, and Liu, Yi -Hsin. Particle acceleration during magnetic reconnection in a low-beta pair plasma. United States: N. p., 2016. Web. doi:10.1063/1.4948284.
Guo, Fan, Li, Hui, Daughton, William, Li, Xiaocan, & Liu, Yi -Hsin. Particle acceleration during magnetic reconnection in a low-beta pair plasma. United States. doi:10.1063/1.4948284.
Guo, Fan, Li, Hui, Daughton, William, Li, Xiaocan, and Liu, Yi -Hsin. Fri . "Particle acceleration during magnetic reconnection in a low-beta pair plasma". United States. doi:10.1063/1.4948284. https://www.osti.gov/servlets/purl/1338803.
@article{osti_1338803,
title = {Particle acceleration during magnetic reconnection in a low-beta pair plasma},
author = {Guo, Fan and Li, Hui and Daughton, William and Li, Xiaocan and Liu, Yi -Hsin},
abstractNote = {Plasma energization through magnetic reconnection in the magnetically dominated regime featured by low plasma beta (β=8πnkT0/B2 <<1) and/or high magnetization (σ=B2/(4πnmc2)>>1) is important in a series of astrophysical systems such as solar flares, pulsar wind nebula, and relativistic jets from black holes. In this paper, we review the recent progress on kinetic simulations of this process and further discuss plasma dynamics and particle acceleration in a low-β reconnection layer that consists of electron–positron pairs. We also examine the effect of different initial thermal temperatures on the resulting particle energy spectra. While earlier papers have concluded that the spectral index is smaller for higher σ, our simulations show that the spectral index approaches p = 1 for sufficiently low plasma β, even if σ~1. Since this predicted spectral index in the idealized limit is harder than most observations, it is important to consider effects that can lead to a softer spectrum such as open boundary simulations. Here, we also remark that the effects of three-dimensional reconnection physics and turbulence on reconnection need to be addressed in the future.},
doi = {10.1063/1.4948284},
journal = {Physics of Plasmas},
number = 5,
volume = 23,
place = {United States},
year = {2016},
month = {4}
}

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Cited by: 6 works
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Works referenced in this record:

Magnetic reconnection
journal, March 2010


Magnetic Reconnection in Astrophysical and Laboratory Plasmas
journal, September 2009


Evidence for Electron Acceleration up to 300 k e V in the Magnetic Reconnection Diffusion Region of Earth’s Magnetotail
journal, October 2002


A loop-top hard X-ray source in a compact solar flare as evidence for magnetic reconnection
journal, October 1994

  • Masuda, S.; Kosugi, T.; Hara, H.
  • Nature, Vol. 371, Issue 6497
  • DOI: 10.1038/371495a0

Measurements of the Coronal Acceleration Region of a Solar Flare
journal, April 2010


Test particle acceleration in turbulent reconnecting magnetic fields
journal, January 1988

  • Ambrosiano, John; Matthaeus, William H.; Goldstein, Melvyn L.
  • Journal of Geophysical Research, Vol. 93, Issue A12
  • DOI: 10.1029/JA093iA12p14383

Suprathermal electron acceleration in magnetic reconnection
journal, November 2001

  • Hoshino, M.; Mukai, T.; Terasawa, T.
  • Journal of Geophysical Research: Space Physics, Vol. 106, Issue A11
  • DOI: 10.1029/2001JA900052

Production of the large scale superluminal ejections of the microquasar GRS 1915+105 by violent magnetic reconnection
journal, September 2005


Electron acceleration from contracting magnetic islands during reconnection
journal, October 2006


The process of electron acceleration during collisionless magnetic reconnection
journal, January 2006

  • Fu, X. R.; Lu, Q. M.; Wang, S.
  • Physics of Plasmas, Vol. 13, Issue 1
  • DOI: 10.1063/1.2164808

Relativistic electron production during guide field magnetic reconnection
journal, January 2006


Electron Acceleration by Multi-Island Coalescence
journal, April 2010


First-order Fermi acceleration driven by magnetic reconnection: Fermi acceleration and magnetic reconnection
journal, March 2012


Relativistic Reconnection: an Efficient Source of Non-Thermal Particles
journal, February 2014


The mechanisms of electron heating and acceleration during magnetic reconnection
journal, September 2014

  • Dahlin, J. T.; Drake, J. F.; Swisdak, M.
  • Physics of Plasmas, Vol. 21, Issue 9
  • DOI: 10.1063/1.4894484

Formation of Hard Power Laws in the Energetic Particle Spectra Resulting from Relativistic Magnetic Reconnection
journal, October 2014


Particle Acceleration and Plasma Dynamics During Magnetic Reconnection in the Magnetically Dominated Regime
journal, June 2015


Particle Acceleration via Reconnection Processes in the Supersonic Solar wind
journal, November 2014


A Kinetic Transport Theory for Particle Acceleration and Transport in Regions of Multiple Contracting and Reconnecting Inertial-Scale flux Ropes
journal, March 2015


Instability of current sheets and formation of plasmoid chains
journal, October 2007

  • Loureiro, N. F.; Schekochihin, A. A.; Cowley, S. C.
  • Physics of Plasmas, Vol. 14, Issue 10
  • DOI: 10.1063/1.2783986

Transition from collisional to kinetic regimes in large-scale reconnection layers
journal, August 2009


Fast reconnection in high-Lundquist-number plasmas due to the plasmoid Instability
journal, November 2009

  • Bhattacharjee, A.; Huang, Yi-Min; Yang, H.
  • Physics of Plasmas, Vol. 16, Issue 11
  • DOI: 10.1063/1.3264103

Fast Magnetic Reconnection in the Plasmoid-Dominated Regime
journal, December 2010


Reconnection in a Weakly Stochastic Field
journal, June 1999

  • Lazarian, A.; Vishniac, Ethan T.
  • The Astrophysical Journal, Vol. 517, Issue 2
  • DOI: 10.1086/307233

Numerical Tests of fast Reconnection in Weakly Stochastic Magnetic Fields
journal, June 2009


Turbulent magnetic reconnection in two dimensions
journal, October 2009

  • Loureiro, N. F.; Uzdensky, D. A.; Schekochihin, A. A.
  • Monthly Notices of the Royal Astronomical Society: Letters, Vol. 399, Issue 1
  • DOI: 10.1111/j.1745-3933.2009.00742.x

Role of electron physics in the development of turbulent magnetic reconnection in collisionless plasmas
journal, April 2011

  • Daughton, W.; Roytershteyn, V.; Karimabadi, H.
  • Nature Physics, Vol. 7, Issue 7
  • DOI: 10.1038/nphys1965

Computing the reconnection rate in turbulent kinetic layers by using electron mixing to identify topology
journal, May 2014

  • Daughton, W.; Nakamura, T. K. M.; Karimabadi, H.
  • Physics of Plasmas, Vol. 21, Issue 5
  • DOI: 10.1063/1.4875730

Turbulent Magnetohydrodynamic Reconnection Mediated by the Plasmoid Instability
journal, February 2016


Magnetic islands formed due to the Kelvin‐Helmholtz instability in the outflow region of collisionless magnetic reconnection
journal, September 2015

  • Huang, Can; Lu, Quanming; Guo, Fan
  • Geophysical Research Letters, Vol. 42, Issue 18
  • DOI: 10.1002/2015GL065690

A model of gamma-ray bursts
journal, October 1994

  • Thompson, Christopher
  • Monthly Notices of the Royal Astronomical Society, Vol. 270, Issue 3
  • DOI: 10.1093/mnras/270.3.480

Efficient acceleration and radiation in Poynting flux powered GRB outflows
journal, August 2002


Gamma-Ray Flares from the Crab Nebula
journal, January 2011


Discovery of Powerful Gamma-Ray Flares from the Crab Nebula
journal, January 2011


The Internal-Collision-Induced Magnetic Reconnection and Turbulence (Icmart) Model of Gamma-Ray Bursts
journal, December 2010


Magnetic Reconnection in Extreme Astrophysical Environments
journal, February 2011


A reconnection switch to trigger gamma-ray burst jet dissipation: GRB reconnection switch
journal, November 2011


Pulsar Wind Nebulae as Cosmic Pevatrons: A Current Sheet’s Tale
journal, May 2012


Magnetar Giant Flares and Their Precursors—Flux rope Eruptions with Current Sheets
journal, June 2013


Polarization Swings Reveal Magnetic Energy Dissipation in Blazars
journal, April 2015


The power of blazar jets: The power of blazar jets
journal, February 2008


Hot and Superhot Plasmas above an Impulsive Flare Loop
journal, April 1997

  • Tsuneta, Saku; Masuda, Satoshi; Kosugi, Takeo
  • The Astrophysical Journal, Vol. 478, Issue 2
  • DOI: 10.1086/303812

Structured coronae of accretion disks
journal, April 1979

  • Galeev, A. A.; Rosner, R.; Vaiana, G. S.
  • The Astrophysical Journal, Vol. 229
  • DOI: 10.1086/156957

The energetics of relativistic magnetic reconnection: ion-electron repartition and particle distribution hardness
journal, October 2014


NONTHERMALLY DOMINATED ELECTRON ACCELERATION DURING MAGNETIC RECONNECTION IN A LOW- β PLASMA
journal, September 2015


The Extent of Power-Law Energy Spectra in Collisionless Relativistic Magnetic Reconnection in pair Plasmas
journal, December 2015


Efficient Production of High-Energy Nonthermal Particles During Magnetic Reconnection in a Magnetically Dominated Ion–Electron Plasma
journal, February 2016


Particle trajectories in model current sheets: 1. Analytical solutions
journal, September 1965


The mechanisms of electron acceleration in antiparallel and guide field magnetic reconnection
journal, July 2010

  • Huang, Can; Lu, Quanming; Wang, Shui
  • Physics of Plasmas, Vol. 17, Issue 7
  • DOI: 10.1063/1.3457930

Large-scale electron acceleration by parallel electric fields during magnetic reconnection
journal, February 2012

  • Egedal, J.; Daughton, W.; Le, A.
  • Nature Physics, Vol. 8, Issue 4
  • DOI: 10.1038/nphys2249

Observation of double layer in the separatrix region during magnetic reconnection: DOUBLE LAYER IN RECONNECTION
journal, July 2014

  • Wang, Rongsheng; Lu, Quanming; Khotyaintsev, Yuri V.
  • Geophysical Research Letters, Vol. 41, Issue 14
  • DOI: 10.1002/2014GL061157

In situ observations of multistage electron acceleration driven by magnetic reconnection
journal, August 2015

  • Wu, Mingyu; Huang, Can; Lu, Quanming
  • Journal of Geophysical Research: Space Physics, Vol. 120, Issue 8
  • DOI: 10.1002/2015JA021165

Electron acceleration in the reconnection diffusion region: Cluster observations: ELECTRON ACCELERATION OBSERVATIONS
journal, June 2012

  • Huang, S. Y.; Vaivads, A.; Khotyaintsev, Y. V.
  • Geophysical Research Letters, Vol. 39, Issue 11
  • DOI: 10.1029/2012GL051946

In Situ Observations of a Secondary Magnetic Island in an Ion Diffusion Region and Associated Energetic Electrons
journal, April 2010


Electron acceleration in the dipolarization front driven by magnetic reconnection: Electron acceleration in the DF
journal, March 2015

  • Huang, Can; Wu, Mingyu; Lu, Quanming
  • Journal of Geophysical Research: Space Physics, Vol. 120, Issue 3
  • DOI: 10.1002/2014JA020918

Fermi and betatron acceleration of suprathermal electrons behind dipolarization fronts: FERMI VERSUS BETATRON BEHIND DF
journal, August 2011

  • Fu, H. S.; Khotyaintsev, Y. V.; André, M.
  • Geophysical Research Letters, Vol. 38, Issue 16
  • DOI: 10.1029/2011GL048528

Energetic electron acceleration by unsteady magnetic reconnection
journal, June 2013

  • Fu, H. S.; Khotyaintsev, Yu. V.; Vaivads, A.
  • Nature Physics, Vol. 9, Issue 7
  • DOI: 10.1038/nphys2664

A statistical study of electron acceleration behind the dipolarization fronts in the magnetotail: ELECTRON ACCELERATION BEHIND THE DFS
journal, August 2013

  • Wu, MingYu; Lu, QuanMing; Volwerk, Martin
  • Journal of Geophysical Research: Space Physics, Vol. 118, Issue 8
  • DOI: 10.1002/jgra.50456

The Generation of Nonthermal Particles in the Relativistic Magnetic Reconnection of Pair Plasmas
journal, November 2001

  • Zenitani, S.; Hoshino, M.
  • The Astrophysical Journal, Vol. 562, Issue 1
  • DOI: 10.1086/337972

Particle Acceleration and Magnetic Dissipation in Relativistic Current Sheet of Pair Plasmas
journal, November 2007

  • Zenitani, S.; Hoshino, M.
  • The Astrophysical Journal, Vol. 670, Issue 1
  • DOI: 10.1086/522226

Fast Magnetic Reconnection and Particle Acceleration in Relativistic Low-Density Electron-Positron Plasmas Without Guide Field
journal, April 2012


Simulations of Particle Acceleration Beyond the Classical Synchrotron Burnoff Limit in Magnetic Reconnection: an Explanation of the crab Flares
journal, June 2013


On the Distribution of Particle Acceleration Sites in Plasmoid-Dominated Relativistic Magnetic Reconnection
journal, December 2015

  • Nalewajko, Krzysztof; Uzdensky, Dmitri A.; Cerutti, Benoît
  • The Astrophysical Journal, Vol. 815, Issue 2
  • DOI: 10.1088/0004-637X/815/2/101

Magnetically striped relativistic magnetohydrodynamic winds - The Crab Nebula revisited
journal, January 1990

  • Coroniti, F. V.
  • The Astrophysical Journal, Vol. 349
  • DOI: 10.1086/168340

Magnetic Pinching of Hyperbolic Flux Tubes. I. Basic Estimations
journal, January 2003

  • Titov, V. S.; Galsgaard, K.; Neukirch, T.
  • The Astrophysical Journal, Vol. 582, Issue 2
  • DOI: 10.1086/344799

Dissipation and Reconnection in Boundary-Driven Reduced Magnetohydrodynamics
journal, November 2014

  • Wan, Minping; Rappazzo, Antonio Franco; Matthaeus, William H.
  • The Astrophysical Journal, Vol. 797, Issue 1
  • DOI: 10.1088/0004-637X/797/1/63

Magnetic Discontinuities in Magnetohydrodynamic Turbulence and in the Solar Wind
journal, April 2012


Energy dynamics and current sheet structure in fluid and kinetic simulations of decaying magnetohydrodynamic turbulence
journal, April 2015

  • Makwana, K. D.; Zhdankin, V.; Li, H.
  • Physics of Plasmas, Vol. 22, Issue 4
  • DOI: 10.1063/1.4916492

A current filamentation mechanism for breaking magnetic field lines during reconnection
journal, June 2011


Scaling of Magnetic Reconnection in Relativistic Collisionless Pair Plasmas
journal, March 2015


Bifurcated Structure of the Electron Diffusion Region in Three-Dimensional Magnetic Reconnection
journal, June 2013


Dissipation in Poynting‐Flux–dominated Flows: The σ‐Problem of the Crab Pulsar Wind
journal, July 2003

  • Kirk, J. G.; Skjaraasen, O.
  • The Astrophysical Journal, Vol. 591, Issue 1
  • DOI: 10.1086/375215

Advances in petascale kinetic plasma simulation with VPIC and Roadrunner
journal, July 2009


Geospace Environmental Modeling (GEM) Magnetic Reconnection Challenge
journal, March 2001

  • Birn, J.; Drake, J. F.; Shay, M. A.
  • Journal of Geophysical Research: Space Physics, Vol. 106, Issue A3
  • DOI: 10.1029/1999JA900449

Collisionless magnetic reconnection in large-scale electron-positron plasmas
journal, July 2007

  • Daughton, William; Karimabadi, Homa
  • Physics of Plasmas, Vol. 14, Issue 7
  • DOI: 10.1063/1.2749494

Three-Dimensional Dynamics of Collisionless Magnetic Reconnection in Large-Scale Pair Plasmas
journal, September 2008


Relativistic mhd Simulations of Collision-Induced Magnetic Dissipation in Poynting-Flux-Dominated Jets/Outflows
journal, May 2015

  • Deng (邓巍), Wei; Li (李晖), Hui; Zhang (张冰), Bing
  • The Astrophysical Journal, Vol. 805, Issue 2
  • DOI: 10.1088/0004-637X/805/2/163

Fast TeV variability in blazars: jets in a jet
journal, May 2009

  • Giannios, Dimitrios; Uzdensky, Dmitri A.; Begelman, Mitchell C.
  • Monthly Notices of the Royal Astronomical Society: Letters, Vol. 395, Issue 1
  • DOI: 10.1111/j.1745-3933.2009.00635.x

The Role of the Guide Field in Relativistic Pair Plasma Reconnection
journal, April 2008

  • Zenitani, S.; Hoshino, M.
  • The Astrophysical Journal, Vol. 677, Issue 1
  • DOI: 10.1086/528708

    Works referencing / citing this record:

    Very-high-energy Emission from Magnetic Reconnection in the Radiative-inefficient Accretion Flow of SgrA*
    journal, June 2019

    • Rodríguez-Ramírez, Juan Carlos; de Gouveia Dal Pino, Elisabete M.; Alves Batista, Rafael
    • The Astrophysical Journal, Vol. 879, Issue 1
    • DOI: 10.3847/1538-4357/ab212e

    Very-high-energy Emission from Magnetic Reconnection in the Radiative-inefficient Accretion Flow of SgrA*
    journal, June 2019

    • Rodríguez-Ramírez, Juan Carlos; de Gouveia Dal Pino, Elisabete M.; Alves Batista, Rafael
    • The Astrophysical Journal, Vol. 879, Issue 1
    • DOI: 10.3847/1538-4357/ab212e