Diffusive synchrotron radiation from extragalactic jets

Details Diffusive synchrotron radiation from extragalactic jets Diffusive synchrotron radiation from extragalactic jets

2005-11-11

arxiv.org/abs/astro-ph/0511353v1

Mon.Not.Roy.Astron.Soc.Lett.365:L11-L15,2006

Astronomy and Astrophysics

Astrophysics

5 pages with 2 figures, MNRAS Letters, accepted

Scientific paper

10.1111/j.1745-3933.2005.00116.x

Flattenings of nonthermal radiation spectra observed from knots and interknot locations of the jets of 3C273 and M87 in UV and X-ray bands are discussed within modern models of magnetic field generation in the relativistic jets. Specifically, we explicitly take into account the effect of the small-scale random magnetic field, probably present in such jets, which gives rise to emission of Diffusive Synchrotron Radiation, whose spectrum deviates substantially from the standard synchrotron spectrum, especially at high frequencies. The calculated spectra agree well with the observed ones if the energy densities contained in small-scale and large-scale magnetic fields are comparable. The implications of this finding for magnetic field generation, particle acceleration, and jet composition are discussed.

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