Emissive Mechanism to Explain Spectral Variability of Blazars in High Frequencies | Zendy

Jiancheng Wang | Zendy; J. Mao | Zendy

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Emissive Mechanism to Explain Spectral Variability of Blazars in High Frequencies

Author(s) -

Jiancheng Wang,

J. Mao

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 - 10.1086/321327

Subject(s) - blazar , physics , synchrotron , synchrotron radiation , particle acceleration , flare , astrophysics , acceleration , electron , dissipation , shock (circulatory) , diffusion , advection , computational physics , optics , nuclear physics , gamma ray , classical mechanics , medicine , thermodynamics

The new results of the evolution of the synchrotron peak for Mrk 421 aremostly likely related to the particle acceleration process. In order to accountfor the above results, we present a model of blazar variability during theflare in which the emission comes from accelerating electrons. A diffusionadvection equation of the electron energy distribution is derived to calculatethe spectrum and light curve of synchrotron radiation. We present that theobserved shifts of the synchrotron peak moving to higher energies during theflare are caused by shock acceleration. The observed relation between changesin the fluxes at specified frequency ranges and shifts of the peak position isfitted to constrain the physical parameters of the dissipation region.Comment: 24 pages, 6 figures, Paper submitted to Ap

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