H.e.s.s. And magic observations of a sudden cessation of a very-high-energy γ -ray flare in PKS 1510-089 in May 2016

Abdalla, H., et al. (HESS Collaboration and MAGIC Collaboration)

Detalles Bibliográficos
Autores: Abdalla, H., Cerruti, Matteo, Molina, E., Paredes, Josep M., Ribó, Marc, Torres-Albà, N., Font, L., Gaug, Markus, Maggio, C., Moreno, V., Munar-Adrover, P., Weaver, Z. R., H.E.S.S. Collaboration, MAGIC Collaboration
Tipo de recurso: artículo
Estado:Versión publicada
Fecha de publicación:2021
País:España
Institución:Consejo Superior de Investigaciones Científicas (CSIC)
Repositorio:DIGITAL.CSIC. Repositorio Institucional del CSIC
OAI Identifier:oai:digital.csic.es:10261/260252
Acceso en línea:http://hdl.handle.net/10261/260252
Access Level:acceso abierto
Palabra clave:Radiation mechanisms: non-thermal
Quasars: individual: PKS 1510-089
Galaxies: active
Relativistic processes
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dc.title.none.fl_str_mv H.e.s.s. And magic observations of a sudden cessation of a very-high-energy γ -ray flare in PKS 1510-089 in May 2016
title H.e.s.s. And magic observations of a sudden cessation of a very-high-energy γ -ray flare in PKS 1510-089 in May 2016
spellingShingle H.e.s.s. And magic observations of a sudden cessation of a very-high-energy γ -ray flare in PKS 1510-089 in May 2016
Abdalla, H.
Radiation mechanisms: non-thermal
Quasars: individual: PKS 1510-089
Galaxies: active
Relativistic processes
title_short H.e.s.s. And magic observations of a sudden cessation of a very-high-energy γ -ray flare in PKS 1510-089 in May 2016
title_full H.e.s.s. And magic observations of a sudden cessation of a very-high-energy γ -ray flare in PKS 1510-089 in May 2016
title_fullStr H.e.s.s. And magic observations of a sudden cessation of a very-high-energy γ -ray flare in PKS 1510-089 in May 2016
title_full_unstemmed H.e.s.s. And magic observations of a sudden cessation of a very-high-energy γ -ray flare in PKS 1510-089 in May 2016
title_sort H.e.s.s. And magic observations of a sudden cessation of a very-high-energy γ -ray flare in PKS 1510-089 in May 2016
dc.creator.none.fl_str_mv Abdalla, H.
Cerruti, Matteo
Molina, E.
Paredes, Josep M.
Ribó, Marc
Torres-Albà, N.
Font, L.
Gaug, Markus
Maggio, C.
Moreno, V.
Munar-Adrover, P.
Weaver, Z. R.
H.E.S.S. Collaboration
MAGIC Collaboration
author Abdalla, H.
author_facet Abdalla, H.
Cerruti, Matteo
Molina, E.
Paredes, Josep M.
Ribó, Marc
Torres-Albà, N.
Font, L.
Gaug, Markus
Maggio, C.
Moreno, V.
Munar-Adrover, P.
Weaver, Z. R.
H.E.S.S. Collaboration
MAGIC Collaboration
author_role author
author2 Cerruti, Matteo
Molina, E.
Paredes, Josep M.
Ribó, Marc
Torres-Albà, N.
Font, L.
Gaug, Markus
Maggio, C.
Moreno, V.
Munar-Adrover, P.
Weaver, Z. R.
H.E.S.S. Collaboration
MAGIC Collaboration
author2_role author
author
author
author
author
author
author
author
author
author
author
author
author
dc.contributor.none.fl_str_mv German Research Foundation
Istituto Nazionale di Fisica Nucleare
Istituto Nazionale di Astrofisica
Swiss National Science Foundation
Ministerio de Economía y Competitividad (España)
Ministerio de Economía y Competitividad (España)
Department of Atomic Energy (India)
Academy of Finland
University of Tokyo
La Caixa
Croatian Science Foundation
University of Rijeka
Polish National Agency for Academic Exchange
Consejo Superior de Investigaciones Científicas [https://ror.org/02gfc7t72]
dc.subject.none.fl_str_mv Radiation mechanisms: non-thermal
Quasars: individual: PKS 1510-089
Galaxies: active
Relativistic processes
topic Radiation mechanisms: non-thermal
Quasars: individual: PKS 1510-089
Galaxies: active
Relativistic processes
description Abdalla, H., et al. (HESS Collaboration and MAGIC Collaboration)
publishDate 2021
dc.date.none.fl_str_mv 2021
2022
2022
2022
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dc.identifier.none.fl_str_mv http://hdl.handle.net/10261/260252
url http://hdl.handle.net/10261/260252
dc.language.none.fl_str_mv Inglés
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spelling H.e.s.s. And magic observations of a sudden cessation of a very-high-energy γ -ray flare in PKS 1510-089 in May 2016Abdalla, H.Cerruti, MatteoMolina, E.Paredes, Josep M.Ribó, MarcTorres-Albà, N.Font, L.Gaug, MarkusMaggio, C.Moreno, V.Munar-Adrover, P.Weaver, Z. R.H.E.S.S. CollaborationMAGIC CollaborationRadiation mechanisms: non-thermalQuasars: individual: PKS 1510-089Galaxies: activeRelativistic processesAbdalla, H., et al. (HESS Collaboration and MAGIC Collaboration)The flat spectrum radio quasar (FSRQ) PKS 1510-089 is known for its complex multiwavelength behaviour and it is one of only a few FSRQs detected in very-high-energy (VHE, E> 100 GeV) γ rays. The VHE γ-ray observations with H.E.S.S. and MAGIC in late May and early June 2016 resulted in the detection of an unprecedented flare, which revealed, for the first time, VHE γ-ray intranight variability for this source. While a common variability timescale of 1.5 h has been found, there is a significant deviation near the end of the flare, with a timescale of ∼20 min marking the cessation of the event. The peak flux is nearly two orders of magnitude above the low-level emission. For the first time, a curvature was detected in the VHE γ-ray spectrum of PKS 1510-089, which can be fully explained by the absorption on the part of the extragalactic background light. Optical R-band observations with ATOM revealed a counterpart of the γ-ray flare, even though the detailed flux evolution differs from the VHE γ-ray light curve. Interestingly, a steep flux decrease was observed at the same time as the cessation of the VHE γ-ray flare. In the high-energy (HE, E> 100 MeV) γ-ray band, only a moderate flux increase was observed with Fermi-LAT, while the HE γ-ray spectrum significantly hardens up to a photon index of 1.6. A search for broad-line region (BLR) absorption features in the γ-ray spectrum indicates that the emission region is located outside of the BLR. Radio very-long-baseline interferometry observations reveal a fast-moving knot interacting with a standing jet feature around the time of the flare. As the standing feature is located ∼50 pc from the black hole, the emission region of the flare may have been located at a significant distance from the black hole. If this is indeed a true correlation, the VHE γ rays must have been produced far down in the jet, where turbulent plasma crosses a standing shock.We would like to thank the Instituto de Astrofísica de Canarias for the excellent working conditions at the Observatorio del Roque de los Muchachos in La Palma. The financial support of the German BMBF and MPG; the Italian INFN and INAF; the Swiss National Fund SNF; the ERDF under the Spanish MINECO (FPA2017-87859-P, FPA2017-85668-P, FPA2017-82729-C6-2-R, FPA2017-82729-C6-6-R, FPA2017-82729-C6-5-R, AYA2015-71042-P, AYA2016-76012-C3-1-P, ESP2017-87055-C2-2-P, FPA2017-90566-REDC); the Indian Department of Atomic Energy; the Japanese ICRR, the University of Tokyo, JSPS, and MEXT; the Bulgarian Ministry of Education and Science, National RI Roadmap Project DO1-153/28.08.2018 and the Academy of Finland grant nr. 320045 is gratefully acknowledged. This work was also supported by the Spanish Centro de Excelencia “Severo Ochoa” SEV-2016-0588 and SEV-2015-0548, the Unidad de Excelencia “María de Maeztu” MDM-2014-0369 and the “la Caixa” Foundation (fellowship LCF/BQ/PI18/11630012), by the Croatian Science Foundation (HrZZ) Project IP-2016-06-9782 and the University of Rijeka Project 13.12.1.3.02, by the DFG Collaborative Research Centers SFB823/C4 and SFB876/C3, the Polish National Research Centre grant UMO-2016/22/M/ST9/00382 and by the Brazilian MCTIC, CNPq and FAPERJ.EDP SciencesGerman Research FoundationIstituto Nazionale di Fisica NucleareIstituto Nazionale di AstrofisicaSwiss National Science FoundationMinisterio de Economía y Competitividad (España)Ministerio de Economía y Competitividad (España)Department of Atomic Energy (India)Academy of FinlandUniversity of TokyoLa CaixaCroatian Science FoundationUniversity of RijekaPolish National Agency for Academic ExchangeConsejo Superior de Investigaciones Científicas [https://ror.org/02gfc7t72]2022202220212022info:eu-repo/semantics/articlehttp://purl.org/coar/resource_type/c_6501Publisher's versioninfo:eu-repo/semantics/publishedVersionhttp://hdl.handle.net/10261/260252reponame:DIGITAL.CSIC. 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