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Coulomb Interactions between Cosmic Rays and Charged Dust Grains

Published online by Cambridge University Press:  25 April 2016

S.E. Byleveld ,
D.B. Melrose  and
LE. Cram
S.E. Byleveld
Affiliation:
Research Centre for Theoretical Astrophysics, School of Physics, University of Sydney, NSW 2006
D.B. Melrose
Affiliation:
Research Centre for Theoretical Astrophysics, School of Physics, University of Sydney, NSW 2006
LE. Cram
Affiliation:
Research Centre for Theoretical Astrophysics, School of Physics, University of Sydney, NSW 2006
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Abstract

The transfer of kinetic energy between cosmic rays and charged dust grains is investigated. The time required for heating of the dust grains due to Coulomb interactions is estimated and compared with the heating time due to ionisation losses by the cosmic rays. Heating of dust grains by cosmic rays is examined in connection with the FIR–radio correlation in galaxies: even for the most favorable conditions, including a high energy density in low-energy, ≲ 100 keV, cosmic rays, the conclusions are equivocal.

Type
High Energy Astrophysics
Information
Publications of the Astronomical Society of Australia , Volume 10 , Issue 3 , 1993 , pp. 218 - 221
Copyright
Copyright © Astronomical Society of Australia 1993

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