Limits from rapid TeV variability of Mrk 421

Preprint

11 July 1997

preprint
Published by arXiv in arXiv

https://doi.org/10.48550/arXiv.astro-ph/9707131

Abstract

The extreme variability event in the TeV emission of Mrk 421, recently reported by the Whipple team, imposes the tightest limits on the typical size of the TeV emitting regions in Active Galactic Nuclei (AGN). We examine the consequences that this imposes on the bulk Lorentz factor of the emitting plasma and on the radiation fields present in the central region of this Active Nucleus. No strong evidence is found for extreme Lorentz factors. However, energetics arguments suggest that any accretion in Mrk 421 has to take place at small rates, compatible with an advection-dominated regime.

Keywords

VARIABILITY EVENT
TEV VARIABILITY
LORENTZ FACTORS
TEV EMISSION
ENERGETICS
RAPID TEV
ACCRETION
MRK

All Related Versions

Version 1, 1997-07-11, ArXiv
Published version: Monthly Notices of the Royal Astronomical Society, 293 (3), 239.

This publication has 0 references indexed in Scilit: