Cyclotron maser emission : stars, planets, and laboratory

Vorgul, I. and Kellett, B. J. and Cairns, R. A. and Bingham, R. and Ronald, K. and Speirs, D. C. and McConville, S. L. and Gillespie, K. M. and Phelps, A. D. R. (2011) Cyclotron maser emission : stars, planets, and laboratory. Physics of Plasmas, 18 (5). -. 056501. ISSN 1070-664X

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Abstract

This paper is a review of results by the group over the past decade on auroral kilometric radiation and similar cyclotron emissions from stars and planets. These emissions are often attributed to a horseshoe or crescent shaped momentum distribution of energetic electrons moving into the convergent magnetic field which exists around polar regions of dipole-type stars and planets. We have established a laboratory-based facility that has verified many of the details of our original theoretical description and agrees well with numerical simulations. The experiment has demonstrated that the horseshoe distribution does indeed produce cyclotron emission at a frequency just below the local cyclotron frequency, with polarization close to X-mode and propagating nearly perpendicularly to the beam motion. We discuss recent developments in the theory and simulation of the instability including addressing a radiation escape problem and the effect of competing instabilities, relating these to the laboratory, space, and astrophysical observations.

ORCID iDs

Vorgul, I., Kellett, B. J., Cairns, R. A., Bingham, R. ORCID logoORCID: https://orcid.org/0000-0002-9843-7635, Ronald, K. ORCID logoORCID: https://orcid.org/0000-0002-8585-0746, Speirs, D. C. ORCID logoORCID: https://orcid.org/0000-0001-5705-6126, McConville, S. L., Gillespie, K. M. and Phelps, A. D. R. ORCID logoORCID: https://orcid.org/0000-0002-1100-1012;
  • Item type:Article
    ID code:35423
    Dates:
    Date
    Event
    May 2011
    Published
    12 April 2011
    Published Online
    Keywords:auroral kilometric radiation, main sequence star, generation, instability, distrobutions, cavity, dipole, Physics, Condensed Matter Physics
    Subjects:Science > Physics
    Department:Faculty of Science > Physics
    Depositing user: Pure Administrator
    Date deposited:31 Oct 2011 12:32
    Last modified:20 Jan 2021 19:48
    Related URLs:
    URI:https://strathprints.strath.ac.uk/id/eprint/35423
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