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@ARTICLE{Vincent:293422,
author = {Vincent, Stephane},
title = {{M}ulti-epoch study of the gamma-ray emission within the
{M}87 magnetosphere model},
journal = {Journal of cosmology and astroparticle physics},
volume = {2015},
number = {05},
issn = {1475-7516},
address = {London},
publisher = {IOP},
reportid = {PUBDB-2016-00511, arXiv:1411.1957},
pages = {042 - 042},
year = {2015},
note = {(c) IOP Publishing Ltd and Sissa Medialab srl},
abstract = {M87 is a nearby radio galaxy that has been detected at
energies ranging from radio to very high energy (VHE)
gamma-rays. Its proximity and its jet, misaligned from the
line of sight allow detailed morphological studies. The
imaging atmospheric Cherenkov technique (from 100 GeV to 10
TeV) provides insufficient angular resolution (few
arc-minutes) to resolve the M87 emission region. However,
the short time scale variability observed by MAGIC, HESS and
VERITAS suggests the TeV emission is coming from a very
small region, most likely close to the core. We propose that
the variable TeV emission may be produced in a pair-starved
region of the central black hole (BH) magnetosphere, i.e. a
region where the density of the electron-positron plasma is
not sufficient to completely screen the accelerating
electric field. The funnel, a low density and magnetically
dominated region around the poles, appears as a favourable
site of low-density where a Blandford-Znajek process may
explain the main properties of the TeV γ-ray emission from
M87. We produce a broadband spectral energy distribution
(SED) of the resulting radiation and compare the model with
the observed fluxes from the nucleus of M87, for both low
and high γ-ray activities. We finish with a brief
discussion on the connection between the accretion rate and
the intermittence in the formation of gaps in the
magnetosphere.},
cin = {ZEU-CTA},
ddc = {530},
cid = {I:(DE-H253)ZEU-CTA-20120731},
pnm = {523 - High-energy gamma ray astronomy (POF2-523)},
pid = {G:(DE-HGF)POF2-523},
experiment = {EXP:(DE-H253)CTA-20150101},
typ = {PUB:(DE-HGF)16},
UT = {WOS:000355794800042},
eprint = {1411.1957},
howpublished = {arXiv:1411.1957},
archivePrefix = {arXiv},
SLACcitation = {$\%\%CITATION$ = $arXiv:1411.1957;\%\%$},
doi = {10.1088/1475-7516/2015/05/042},
url = {https://bib-pubdb1.desy.de/record/293422},
}