Synchrotron absorption in pulsar magnetospheres

Details Synchrotron absorption in pulsar magnetospheres Synchrotron absorption in pulsar magnetospheres

Sep 1998

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1998a%26a...337..433l&link_type=abstract

Astronomy and Astrophysics, v.337, p.433-440 (1998)

Astronomy and Astrophysics

Astrophysics

22

Plasmas, Radiation Mechanisms: Non-Thermal, Stars: Pulsars: General

Scientific paper

Cyclotron absorption is known to be significant in pulsar magnetospheres. It is shown that when particles absorb significant fraction of pulsar radio emission, they acquire relativistic gyration. Therefore synchrotron absorption by relativistic plasma with small pitch-angles is considered. It is shown that both the frequency of the absorbed radiation and the absorption coefficient remain the same as in the cyclotron case provided that the angle the absorbed radiation makes with plasma velocity exceeds the pitch-angle. This condition holds if the absorbed energy is less than initial energy of plasma. Spontaneous reemission of the absorbed energy is considered. In short-period pulsars, a significant fraction of the absorbed energy is reemitted in the far infrared band.

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