Hard Radio Spectra from Reconnection Regions in Galactic Nuclei | Zendy

G. T. Birk | Zendy; A. Crusius-Wätzel | Zendy; H. Lesch | Zendy

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Hard Radio Spectra from Reconnection Regions in Galactic Nuclei

Author(s) -

G. T. Birk,

A. Crusius-Wätzel,

H. Lesch

Publication year - 2001

Publication title -

the astrophysical journal

Language(s) - English

Resource type - Journals

SCImago Journal Rank - 2.376

H-Index - 489

eISSN - 1538-4357

pISSN - 0004-637X

DOI - 10.1086/322394

Subject(s) - physics , particle acceleration , spectral line , acceleration , momentum (technical analysis) , diffusion , astrophysics , synchrotron , computational physics , space (punctuation) , magnetic reconnection , position and momentum space , particle (ecology) , classical mechanics , astronomy , nuclear physics , quantum mechanics , plasma , finance , economics , linguistics , philosophy , oceanography , geology

Extremely flat and inverted radio spectra as observed in galactic nuclei andBL Lac sources are still a challenge for fast particle acceleration models.Continuous acceleration by electric fields in reconnection regions can resultin almost constant particle distributions and thereby in inverted synchrotronspectra independent from the details of the injected spectrum. These spectraare calculated from a spatially averaged diffusion transport equation inmomentum space that includes systematic momentum gains and losses as well asfinite particle escape lifetimes.Comment: 14 pages, 2 figures, acc. for publ. in Ap

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