Maser radiation from collisionless shocks: Application to astrophysical jets

D. C. Speirs, K. Ronald, A. D.R. Phelps, M. E. Koepke, R. A. Cairns, A. Rigby, F. Cruz, R. M.G.M. Trines, R. Bamford, B. J. Kellett, B. Albertazzi, J. E. Cross, F. Fraschetti, P. Graham, P. M. Kozlowski, Y. Kuramitsu, F. Miniati, T. Morita, M. Oliver, B. RevilleY. Sakawa, S. Sarkar, C. Spindloe, M. Koenig, L. O. Silva, D. Q. Lamb, P. Tzeferacos, S. Lebedev, G. Gregori, R. Bingham

Research output: Contribution to journalArticle

Abstract

This paper describes a model of electron energization and cyclotron-maser emission applicable to astrophysical magnetized collisionless shocks. It is motivated by the work of Begelman, Ergun and Rees [Astrophys. J. 625, 51 (2005)] who argued that the cyclotron-maser instability occurs in localized magnetized collisionless shocks such as those expected in blazar jets. We report on recent research carried out to investigate electron acceleration at collisionless shocks and maser radiation associated with the accelerated electrons. We describe how electrons accelerated by lower-hybrid waves at collisionless shocks generate cyclotron-maser radiation when the accelerated electrons move into regions of stronger magnetic fields. The electrons are accelerated along the magnetic field and magnetically compressed leading to the formation of an electron velocity distribution having a horseshoe shape due to conservation of the electron magnetic moment. Under certain conditions the horseshoe electron velocity distribution function is unstable to the cyclotron-maser instability [Bingham and Cairns, Phys. Plasmas 7, 3089 (2000); Melrose, Rev. Mod. Plasma Phys. 1, 5 (2017)].

Original languageEnglish
JournalHigh Power Laser Science and Engineering
DOIs
Publication statusPublished - Jan 1 2019

Fingerprint

Masers
masers
astrophysics
shock
Radiation
Electrons
radiation
Cyclotrons
cyclotrons
electrons
Velocity distribution
velocity distribution
Magnetic fields
electron acceleration
Plasmas
Plasma stability
magnetic fields
Magnetic moments
conservation
Distribution functions

All Science Journal Classification (ASJC) codes

  • Electronic, Optical and Magnetic Materials
  • Atomic and Molecular Physics, and Optics
  • Nuclear and High Energy Physics
  • Nuclear Energy and Engineering

Cite this

Speirs, D. C., Ronald, K., Phelps, A. D. R., Koepke, M. E., Cairns, R. A., Rigby, A., ... Bingham, R. (2019). Maser radiation from collisionless shocks: Application to astrophysical jets. High Power Laser Science and Engineering. https://doi.org/10.1017/hpl.2019.3

Maser radiation from collisionless shocks : Application to astrophysical jets. / Speirs, D. C.; Ronald, K.; Phelps, A. D.R.; Koepke, M. E.; Cairns, R. A.; Rigby, A.; Cruz, F.; Trines, R. M.G.M.; Bamford, R.; Kellett, B. J.; Albertazzi, B.; Cross, J. E.; Fraschetti, F.; Graham, P.; Kozlowski, P. M.; Kuramitsu, Y.; Miniati, F.; Morita, T.; Oliver, M.; Reville, B.; Sakawa, Y.; Sarkar, S.; Spindloe, C.; Koenig, M.; Silva, L. O.; Lamb, D. Q.; Tzeferacos, P.; Lebedev, S.; Gregori, G.; Bingham, R.

In: High Power Laser Science and Engineering, 01.01.2019.

Research output: Contribution to journalArticle

Speirs, DC, Ronald, K, Phelps, ADR, Koepke, ME, Cairns, RA, Rigby, A, Cruz, F, Trines, RMGM, Bamford, R, Kellett, BJ, Albertazzi, B, Cross, JE, Fraschetti, F, Graham, P, Kozlowski, PM, Kuramitsu, Y, Miniati, F, Morita, T, Oliver, M, Reville, B, Sakawa, Y, Sarkar, S, Spindloe, C, Koenig, M, Silva, LO, Lamb, DQ, Tzeferacos, P, Lebedev, S, Gregori, G & Bingham, R 2019, 'Maser radiation from collisionless shocks: Application to astrophysical jets', High Power Laser Science and Engineering. https://doi.org/10.1017/hpl.2019.3
Speirs, D. C. ; Ronald, K. ; Phelps, A. D.R. ; Koepke, M. E. ; Cairns, R. A. ; Rigby, A. ; Cruz, F. ; Trines, R. M.G.M. ; Bamford, R. ; Kellett, B. J. ; Albertazzi, B. ; Cross, J. E. ; Fraschetti, F. ; Graham, P. ; Kozlowski, P. M. ; Kuramitsu, Y. ; Miniati, F. ; Morita, T. ; Oliver, M. ; Reville, B. ; Sakawa, Y. ; Sarkar, S. ; Spindloe, C. ; Koenig, M. ; Silva, L. O. ; Lamb, D. Q. ; Tzeferacos, P. ; Lebedev, S. ; Gregori, G. ; Bingham, R. / Maser radiation from collisionless shocks : Application to astrophysical jets. In: High Power Laser Science and Engineering. 2019.
@article{faa6756e7694496880804c10395399de,
title = "Maser radiation from collisionless shocks: Application to astrophysical jets",
abstract = "This paper describes a model of electron energization and cyclotron-maser emission applicable to astrophysical magnetized collisionless shocks. It is motivated by the work of Begelman, Ergun and Rees [Astrophys. J. 625, 51 (2005)] who argued that the cyclotron-maser instability occurs in localized magnetized collisionless shocks such as those expected in blazar jets. We report on recent research carried out to investigate electron acceleration at collisionless shocks and maser radiation associated with the accelerated electrons. We describe how electrons accelerated by lower-hybrid waves at collisionless shocks generate cyclotron-maser radiation when the accelerated electrons move into regions of stronger magnetic fields. The electrons are accelerated along the magnetic field and magnetically compressed leading to the formation of an electron velocity distribution having a horseshoe shape due to conservation of the electron magnetic moment. Under certain conditions the horseshoe electron velocity distribution function is unstable to the cyclotron-maser instability [Bingham and Cairns, Phys. Plasmas 7, 3089 (2000); Melrose, Rev. Mod. Plasma Phys. 1, 5 (2017)].",
author = "Speirs, {D. C.} and K. Ronald and Phelps, {A. D.R.} and Koepke, {M. E.} and Cairns, {R. A.} and A. Rigby and F. Cruz and Trines, {R. M.G.M.} and R. Bamford and Kellett, {B. J.} and B. Albertazzi and Cross, {J. E.} and F. Fraschetti and P. Graham and Kozlowski, {P. M.} and Y. Kuramitsu and F. Miniati and T. Morita and M. Oliver and B. Reville and Y. Sakawa and S. Sarkar and C. Spindloe and M. Koenig and Silva, {L. O.} and Lamb, {D. Q.} and P. Tzeferacos and S. Lebedev and G. Gregori and R. Bingham",
year = "2019",
month = "1",
day = "1",
doi = "10.1017/hpl.2019.3",
language = "English",
journal = "High Power Laser Science and Engineering",
issn = "2095-4719",
publisher = "Cambridge University Press",

}

TY - JOUR

T1 - Maser radiation from collisionless shocks

T2 - Application to astrophysical jets

AU - Speirs, D. C.

AU - Ronald, K.

AU - Phelps, A. D.R.

AU - Koepke, M. E.

AU - Cairns, R. A.

AU - Rigby, A.

AU - Cruz, F.

AU - Trines, R. M.G.M.

AU - Bamford, R.

AU - Kellett, B. J.

AU - Albertazzi, B.

AU - Cross, J. E.

AU - Fraschetti, F.

AU - Graham, P.

AU - Kozlowski, P. M.

AU - Kuramitsu, Y.

AU - Miniati, F.

AU - Morita, T.

AU - Oliver, M.

AU - Reville, B.

AU - Sakawa, Y.

AU - Sarkar, S.

AU - Spindloe, C.

AU - Koenig, M.

AU - Silva, L. O.

AU - Lamb, D. Q.

AU - Tzeferacos, P.

AU - Lebedev, S.

AU - Gregori, G.

AU - Bingham, R.

PY - 2019/1/1

Y1 - 2019/1/1

N2 - This paper describes a model of electron energization and cyclotron-maser emission applicable to astrophysical magnetized collisionless shocks. It is motivated by the work of Begelman, Ergun and Rees [Astrophys. J. 625, 51 (2005)] who argued that the cyclotron-maser instability occurs in localized magnetized collisionless shocks such as those expected in blazar jets. We report on recent research carried out to investigate electron acceleration at collisionless shocks and maser radiation associated with the accelerated electrons. We describe how electrons accelerated by lower-hybrid waves at collisionless shocks generate cyclotron-maser radiation when the accelerated electrons move into regions of stronger magnetic fields. The electrons are accelerated along the magnetic field and magnetically compressed leading to the formation of an electron velocity distribution having a horseshoe shape due to conservation of the electron magnetic moment. Under certain conditions the horseshoe electron velocity distribution function is unstable to the cyclotron-maser instability [Bingham and Cairns, Phys. Plasmas 7, 3089 (2000); Melrose, Rev. Mod. Plasma Phys. 1, 5 (2017)].

AB - This paper describes a model of electron energization and cyclotron-maser emission applicable to astrophysical magnetized collisionless shocks. It is motivated by the work of Begelman, Ergun and Rees [Astrophys. J. 625, 51 (2005)] who argued that the cyclotron-maser instability occurs in localized magnetized collisionless shocks such as those expected in blazar jets. We report on recent research carried out to investigate electron acceleration at collisionless shocks and maser radiation associated with the accelerated electrons. We describe how electrons accelerated by lower-hybrid waves at collisionless shocks generate cyclotron-maser radiation when the accelerated electrons move into regions of stronger magnetic fields. The electrons are accelerated along the magnetic field and magnetically compressed leading to the formation of an electron velocity distribution having a horseshoe shape due to conservation of the electron magnetic moment. Under certain conditions the horseshoe electron velocity distribution function is unstable to the cyclotron-maser instability [Bingham and Cairns, Phys. Plasmas 7, 3089 (2000); Melrose, Rev. Mod. Plasma Phys. 1, 5 (2017)].

UR - http://www.scopus.com/inward/record.url?scp=85062907539&partnerID=8YFLogxK

UR - http://www.scopus.com/inward/citedby.url?scp=85062907539&partnerID=8YFLogxK

U2 - 10.1017/hpl.2019.3

DO - 10.1017/hpl.2019.3

M3 - Article

AN - SCOPUS:85062907539

JO - High Power Laser Science and Engineering

JF - High Power Laser Science and Engineering

SN - 2095-4719

ER -