We present a linear study of the radiative instability driven by synchrotron emission in astrophysical plasmas. The novelty in this work is to consider the case of a non-Maxwellian distribution function and follow its time evolution consistently. We find unstable filamentation modes for any value of the spectral index, with increasing growth rate going from steep to flat spectra, provided that the plasma beta is larger than unity. We discuss our results in the context of the formation of the filamentary structures observed in jets and lobes of extended radio sources.

Radiative instability in synchrotron-emitting plasmas

MASSAGLIA, Silvano;FERRARI, Attilio
1993-01-01

Abstract

We present a linear study of the radiative instability driven by synchrotron emission in astrophysical plasmas. The novelty in this work is to consider the case of a non-Maxwellian distribution function and follow its time evolution consistently. We find unstable filamentation modes for any value of the spectral index, with increasing growth rate going from steep to flat spectra, provided that the plasma beta is larger than unity. We discuss our results in the context of the formation of the filamentary structures observed in jets and lobes of extended radio sources.
1993
Inglese
Sì, ma tipo non specificato
414
112
119
ITALIA
262
4
Rossi, P.; Bodo, G.; Massaglia, S.; Ferrari, A.
info:eu-repo/semantics/article
none
03-CONTRIBUTO IN RIVISTA::03A-Articolo su Rivista
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Utilizza questo identificativo per citare o creare un link a questo documento: https://hdl.handle.net/2318/102497
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