Cyclotron-Synchrotron: harmonic fitting functions in the non-relativistic and trans-relativistic regimes

Details Cyclotron-Synchrotron: harmonic fitting functions in the non-relativistic and trans-relativistic regimes Cyclotron-Synchrotron: harmonic fitting functions in the non-relativistic and trans-relativistic regimes

2003-09-03

arxiv.org/abs/astro-ph/0309107v1

Astron.Astrophys.409:9-20,2003

Astronomy and Astrophysics

Astrophysics

11 pages, 11 figures, accepted for publication in Astronomy & Astrophysics

Scientific paper

10.1051/0004-6361:20031060

The present work investigates the calculation of absorption and emission cyclotron line profiles in the non-relativistic and trans-relativistic regimes. We provide fits for the ten first harmonics with synthetic functions down to 10^(-4) of the maximum flux with an accuracy of 20 per cent at worst. The lines at a given particle energy are calculated from the integration of the Schott formula over the photon and the particle solid angles relative to the magnetic field direction. The method can easily be extended to a larger number of harmonics. We also derive spectral fits of thermal emission line plasmas at non-relativistic and trans-relativistic temperatures extending previous parameterisations.

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