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@ARTICLE{Abe:623127,
author = {Abe, S. and Abhir, J. and Abhishek, A. and Acciari, V. A.
and Aguasca-Cabot, A. and Agudo, I. and Aniello, T. and
Ansoldi, S. and Antonelli, L. A. and Engels, A. Arbet and
Arcaro, C. and Artero, M. and Asano, K. and Babić, A. and
Baquero, A. and de Almeida, U. Barres and Barrio, J. A. and
Batković, I. and Bautista, A. and Baxter, J. and González,
J. Becerra and Bednarek, W. and Bernardini, E. and Bernete,
J. and Berti, A. and Bigongiari, C. and Biland, A. and
Blanch, O. and Bonnoli, G. and Bošnjak, Ž. and Bronzini,
E. and Burelli, I. and Busetto, G. and Buson, S. and
Campoy-Ordaz, A. and Carosi, A. and Carosi, R. and
Carretero-Castrillo, M. and Castro-Tirado, A. J. and
Cerasole, D. and Ceribella, G. and Chai, Y. and Cifuentes,
A. and Ciprini, S. and Colombo, E. and Contreras, J. L. and
Cortina, J. and Covino, S. and D'Amico, G. and D'Ammando, F.
and D'Elia, V. and Da Vela, P. and Dazzi, F. and De Angelis,
A. and De Lotto, B. and de Menezes, R. and Del Popolo, A.
and Delfino, M. and Delgado, J. and Mendez, C. Delgado and
Di Pierro, F. and Di Tria, R. and Di Venere, L. and Donini,
A. and Dorner, D. and Doro, M. and Elsaesser, D. and
Escudero, J. and Fariña, L. and Fattorini, A. and Foffano,
L. and Font, L. and Fröse, S. and Fukami, S. and Fukazawa,
Y. and López, R. J. García and Garczarczyk, M. and
Gasparyan, S. and Gaug, M. and Paiva, J. G. Giesbrecht and
Giglietto, N. and Giordano, F. and Gliwny, P. and Gradetzke,
T. and Grau, R. and Green, D. and Green, J. G. and Günther,
P. and Hadasch, D. and Hahn, A. and Hassan, T. and Heckmann,
L. and Herrera, J. and Hrupec, D. and Hütten, M. and
Imazawa, R. and Ishio, K. and Martínez, I. Jiménez and
Jormanainen, J. and Kayanoki, T. and Kerszberg, D. and
Kobayashi, Y. and Kouch, P. M. and Kubo, H. and Kushida, J.
and Láinez, M. and Lamastra, A. and Leone, F. and Lindfors,
E. and Linhoff, L. and Lombardi, S. and Longo, F. and
López-Coto, R. and López-Moya, M. and López-Oramas, A.
and Loporchio, S. and Lorini, A. and Lyard, E. and de
Oliveira Fraga, B. Machado and Majumdar, P. and Makariev, M.
and Maneva, G. and Mang, N. and Manganaro, M. and Mangano,
S. and Mannheim, K. and Mariotti, M. and Martínez, M. and
Martínez-Chicharro, M. and Mas-Aguilar, A. and Mazin, D.
and Menchiari, S. and Mender, S. and Miceli, D. and Miener,
T. and Miranda, J. M. and Mirzoyan, R. and González, M.
Molero and Molina, E. and Mondal, H. A. and Moralejo, A. and
Morcuende, D. and Nakamori, T. and Nanci, C. and Neustroev,
V. and Nickel, L. and Nievas Rosillo, M. and Nigro, C. and
Nikolić, L. and Nilsson, K. and Nishijima, K. and Ekoume,
T. Njoh and Noda, K. and Nozaki, S. and Ohtani, Y. and
Okumura, A. and Otero-Santos, J. and Paiano, S. and
Palatiello, M. and Paneque, D. and Paredes, J. M. and
Peresano, M. and Persic, M. and Pihet, M. and Pirola, G. and
Podobnik, F. and Prada Moroni, P. G. and Prandini, E. and
Principe, G. and Priyadarshi, C. and Ramazani, V. F. and
Rhode, W. and Ribó, M. and Rico, J. and Righi, C. and
Sahakyan, N. and Saito, T. and Satalecka, K. and Saturni, F.
G. and Schleicher, B. and Schmidt, K. and Schmuckermaier, F.
and Schubert, J. L. and Schweizer, T. and Sciaccaluga, A.
and Silvestri, G. and Sitarek, J. and Sliusar, V. and
Sobczynska, D. and Spolon, A. and Stamerra, A. and
Strišković, J. and Strom, D. and Strzys, M. and Suda, Y.
and Suutarinen, S. and Tajima, H. and Takahashi, M. and
Takeishi, R. and Temnikov, P. and Terauchi, K. and Terzić,
T. and Teshima, M. and Truzzi, S. and Tutone, A. and Ubach,
S. and van Scherpenberg, J. and Vazquez Acosta, M. and
Ventura, S. and Viale, I. and Vigorito, C. F. and Vitale, V.
and Vovk, I. and Walter, R. and Will, M. and Wunderlich, C.
and Yamamoto, T. and Żywucka, N.},
collaboration = {{MAGIC Collaboration}},
title = {{C}onstraints on {VHE} gamma-ray emission of {F}lat
{S}pectrum {R}adio {Q}uasars with the {MAGIC} telescopes},
reportid = {PUBDB-2025-00614, arXiv:2403.13713},
year = {2024},
note = {about to be submitted to MNRAS (SFB1491)and by the
Lamarr-Institute for Machine Learning and
ArtificialIntelligence},
abstract = {Flat spectrum radio quasars (FSRQs) constitute a class of
jetted active galaxies characterized by a very luminous
accretion disk, prominent and rapidly moving line-emitting
cloud structures (Broad Line Region, BLR), and a surrounding
dense dust structure known as dusty torus. The intense
radiation field of the accretion disk strongly determines
the observational properties of FSRQs. While hundreds of
such sources have been detected at GeV energies, only a
handful of them exhibit emission in the very-high-energy
(VHE, E $\gtrsim 100$ GeV) range. This study presents the
results and interpretation derived from a cumulative
observation period of 174 hours dedicated to nine FSRQs
conducted with the MAGIC telescopes from 2008 to 2020. Our
findings indicate no statistically significant ($\geq$ 5
$\sigma$) signal for any of the studied sources, resulting
in upper limits on the emission within the VHE energy range.
In two of the sources, we derived quite stringent
constraints on the $\gamma$-ray emission in the form of
upper limits. Our analysis focuses on modeling the VHE
emission of these two sources in search for hints of
absorption signatures within the broad line region (BLR)
radiation field. For these particular sources, constraints
on the distance between the emission region and the central
black hole are derived using a phenomenological model.
Subsequently, these constraints are tested using a framework
based on a leptonic model.},
keywords = {model: leptonic (INSPIRE) / gamma ray: VHE (INSPIRE) /
gamma ray: emission (INSPIRE) / MAGIC (INSPIRE) / GeV
(INSPIRE) / quasar (INSPIRE) / accretion (INSPIRE) / blazar
(INSPIRE) / structure (INSPIRE) / black hole (INSPIRE) /
torus (INSPIRE) / absorption (INSPIRE) / cloud (INSPIRE) /
signature (INSPIRE) / galaxy (INSPIRE)},
cin = {$Z_GA$},
cid = {$I:(DE-H253)Z_GA-20210408$},
pnm = {613 - Matter and Radiation from the Universe (POF4-613) /
MessMapp - Mapping Highly-Energetic Messengers throughout
the Universe (949555)},
pid = {G:(DE-HGF)POF4-613 / G:(EU-Grant)949555},
experiment = {EXP:(DE-H253)MAGIC-20170101},
typ = {PUB:(DE-HGF)25},
eprint = {2403.13713},
howpublished = {arXiv:2403.13713},
archivePrefix = {arXiv},
SLACcitation = {$\%\%CITATION$ = $arXiv:2403.13713;\%\%$},
url = {https://bib-pubdb1.desy.de/record/623127},
}
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