Astronomy and Astrophysics – Astronomy
Scientific paper
Nov 2000
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2000mnras.318..983a&link_type=abstract
Monthly Notices of the Royal Astronomical Society, Volume 318, Issue 4, pp. 983-1004.
Astronomy and Astrophysics
Astronomy
17
Instabilities, Plasmas, Radiation Methods: Non-Thermal, Waves, Pulsars: General, Galaxies: Jets
Scientific paper
The properties of waves able to propagate in a relativistic pair plasma are at the basis of the interpretation of several astrophysical observations. For instance, they are invoked in relation to radio emission processes in pulsar magnetospheres and to radiation mechanisms for relativistic radio jets. In such physical environments, pair plasma particles probably have relativistic, or even ultrarelativistic, temperatures. Besides, the presence of an extremely strong magnetic field in the emission region constrains the particles to one-dimensional motion: all the charged particles strictly move along magnetic field lines. We take anisotropic effects and relativistic effects into account by choosing one-dimensional relativistic Jűttner-Synge distribution functions to characterize the distribution of electrons and/or positrons in a relativistic, anisotropic pair plasma. The dielectric tensor, from which the dispersion relation associated with plane wave perturbations of such a pair plasma is derived, involves specific coefficients that depend on the distribution function of particles. A precise determination of these coefficients, using the relativistic one-dimensional Jűttner-Synge distribution function, allows us to obtain the appropriate dispersion relation. The properties of waves able to propagate in anisotropic relativistic pair plasmas are deduced from this dispersion relation. The conditions in which a beam and a plasma, both ultrarelativistic, may interact and trigger off a two-stream instability are obtained from this same dispersion relation. Two astrophysical applications are discussed.
Asseo Estelle
Riazuelo Alain
No associations
LandOfFree
Relativistic anisotropic pair plasmas does not yet have a rating. At this time, there are no reviews or comments for this scientific paper.
If you have personal experience with Relativistic anisotropic pair plasmas, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Relativistic anisotropic pair plasmas will most certainly appreciate the feedback.
Profile ID: LFWR-SCP-O-1112775