Investigating the peculiar emission from the new VHE gamma-ray source H1722+119

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dc.contributor.authorAntoranz Canales, Pedro
dc.contributor.authorBarrio Uña, Juan Abel
dc.contributor.authorBonnefoy, Simon Francois Albert
dc.contributor.authorContreras González, José Luis
dc.contributor.authorFonseca González, Mª Victoria
dc.contributor.authorLópez Moya, Marcos
dc.contributor.authorMiranda Pantoja, José Miguel
dc.contributor.authorNievas Rosillo, Mireia
dc.contributor.authorotros, ...
dc.date.accessioned2023-06-18T06:56:23Z
dc.date.available2023-06-18T06:56:23Z
dc.date.issued2016-07-01
dc.description© 2016 The Authors. Artículo firmado por 160 autores. We are grateful to Marco Landoni for help with adopting data from Landoni et al. (2014). 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 (FPA2012-39502), and the Japanese JSPS and MEXT is gratefully acknowledged. This work was also supported by the Centro de Excelencia Severo Ochoa SEV-2012-0234, CPAN CSD2007-00042, and MultiDark CSD2009-00064 projects of the Spanish Consolider Ingenio 2010 programme, by grant 268740 of the Academy of Finland, by the Croatian Science Foundation (HrZZ) Project 09/176 and the University of Rijeka Project 13.12.1.3.02, by the DFG Collaborative Research Centers SFB823/C4 and SFB876/C3, and by the Polish MNiSzW grant 745/N-HESSMAGIC/2010/0. The Fermi-LAT Collaboration acknowledges generous ongoing support from a number of agencies and institutes that have supported both the development and the operation of the LAT as well as scientific data analysis. These include the National Aeronautics and Space Administration and the Department of Energy in the United States, the Commissariat à l’Energie Atomique and the Centre National de la Recherche Scientifique / Institut National de Physique Nucléaire et de Physique des Particules in France, the Agenzia Spaziale Italiana and the Istituto Nazionale di Fisica Nucleare in Italy, the Ministry of Education, Culture, Sports, Science and Technology (MEXT), High Energy Accelerator Research Organization (KEK) and Japan Aerospace Exploration Agency (JAXA) in Japan, and the K. A. Wallenberg Foundation, the Swedish Research Council and the Swedish National Space Board in Sweden. Additional support for science analysis during the operations phase from the following agencies is also gratefully acknowledged: the Istituto Nazionale di Astrofisica in Italy and the Centre National d’Études Spatiales in France. The OVRO 40-m monitoring program is supported in part by NASA grants NNX08AW31G and NNX11A043G, and NSF grants AST-0808050 and AST-1109911. Antonio Stamerra acknowledges financial support in the frame of the INAF Senior Scientist program of ASDC and by the Italian Ministry for Research and Scuola Normale Superiore. Elisa Prandini gratefully acknowledges the financial support of the Marie Heim-Vogtlin grant of the Swiss National Science Foundation.
dc.description.abstractThe MAGIC (Major Atmospheric Gamma-ray Imaging Cherenkov) telescopes observed the BL Lac object H1722+119 (redshift unknown) for six consecutive nights between 2013 May 17 and 22, for a total of 12.5 h. The observations were triggered by high activity in the optical band measured by the KVA (Kungliga Vetenskapsakademien) telescope. The source was for the first time detected in the very high energy (VHE, E > 100 GeV) γ-ray band with a statistical significance of 5.9 σ. The integral flux above 150 GeV is estimated to be (2.0 ± 0.5) per cent of the Crab Nebula flux. We used contemporaneous high energy (HE, 100MeV < E < 100 GeV) γ-ray observations from Fermi-LAT (Large Area Telescope) to estimate the redshift of the source. Within the framework of the current extragalactic background light models, we estimate the redshift to be z = 0.34±0.15. Additionally, we used contemporaneous X-ray to radio data collected by the instruments on board the Swift satellite, the KVA, and the OVRO (Owens Valley Radio Observatory) telescope to study multifrequency characteristics of the source. We found no significant temporal variability of the flux in the HE and VHE bands. The flux in the optical and radio wavebands, on the other hand, did vary with different patterns. The spectral energy distribution (SED) of H1722+119 shows surprising behaviour in the ∼ 3×1014 −1018 Hz frequency range. It can be modelled using an inhomogeneous helical jet synchrotron self-Compton model.
dc.description.departmentDepto. de Estructura de la Materia, Física Térmica y Electrónica
dc.description.facultyFac. de Ciencias Físicas
dc.description.refereedTRUE
dc.description.sponsorshipMinisterio de Economía y Competitividad (MINECO)
dc.description.sponsorshipGerman BMBF and MPG
dc.description.sponsorshipItalian INFN and INAF
dc.description.sponsorshipSwiss National Fund SNF
dc.description.sponsorshipJapanese JSPS and MEXT
dc.description.sponsorshipCentro de Excelencia Severo Ochoa
dc.description.sponsorshipSpanish Consolider Ingenio 2010 programme
dc.description.sponsorshipAcademy of Finland
dc.description.sponsorshipCroatian Science Foundation (HrZZ)
dc.description.sponsorshipUniversity of Rijeka
dc.description.sponsorshipDFG Collaborative Research Centers
dc.description.sponsorshipPolish MNiSzW
dc.description.sponsorshipNational Aeronautics and Space Administration and the Department of Energy in the United States
dc.description.sponsorshipCommissariat à l’Energie Atomique and the Centre National de la Recherche Scientifique / Institut National de Physique Nucléaire et de Physique des Particules in France
dc.description.sponsorshipAgenzia Spaziale Italiana
dc.description.sponsorshipIstituto Nazionale di Fisica Nucleare in Italy
dc.description.sponsorshipMinistry of Education, Culture, Sports, Science and Technology (MEXT) in Japan
dc.description.sponsorshipHigh Energy Accelerator Research Organization (KEK) in Japan
dc.description.sponsorshipJapan Aerospace Exploration Agency (JAXA)
dc.description.sponsorshipK. A. Wallenberg Foundation in Sweden
dc.description.sponsorshipSwedish Research Council
dc.description.sponsorshipSwedish National Space Board
dc.description.sponsorshipIstituto Nazionale di Astrofisica in Italy
dc.description.sponsorshipCentre National d’Études Spatiales in France
dc.description.sponsorshipNASA
dc.description.sponsorshipNSF
dc.description.sponsorshipINAF Senior Scientist program of ASDC
dc.description.sponsorshipItalian Ministry for Research
dc.description.sponsorshipScuola Normale Superiore in Italy
dc.description.sponsorshipSwiss National Science Foundation
dc.description.statuspub
dc.eprint.idhttps://eprints.ucm.es/id/eprint/39258
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dc.identifier.doi10.1093/mnras/stw689
dc.identifier.issn0035-8711
dc.identifier.officialurlhttp://dx.doi.org/10.1093/mnras/stw689
dc.identifier.relatedurlhttp://mnras.oxfordjournals.org/
dc.identifier.relatedurlhttp://arxiv.org/abs/1603.06523
dc.identifier.urihttps://hdl.handle.net/20.500.14352/24629
dc.issue.number3
dc.journal.titleMonthly notices of the Royal Astronomical Society
dc.language.isoeng
dc.page.final3281
dc.page.initial3271
dc.publisherWiley
dc.relation.projectIDFPA2012-39502
dc.relation.projectIDSEV-2012-0234
dc.relation.projectIDCPAN CSD2007-00042
dc.relation.projectIDCSD2009-00064
dc.relation.projectID268740
dc.relation.projectID09/176
dc.relation.projectID13.12.1.3.02
dc.relation.projectIDSFB823/C4
dc.relation.projectIDSFB876/C3
dc.relation.projectID745/N-HESSMAGIC/2010/0
dc.relation.projectIDNNX08AW31G
dc.relation.projectIDNNX11A043G
dc.relation.projectIDAST-0808050
dc.relation.projectIDAST-1109911
dc.relation.projectIDMarie Heim-Vogtlin
dc.rights.accessRightsopen access
dc.subject.cdu537
dc.subject.cdu539.1
dc.subject.keywordLarge-area telescope
dc.subject.keywordBL lacertae objects
dc.subject.keywordAll-sky survey
dc.subject.keywordMagic telescopes
dc.subject.keywordLAC objects
dc.subject.keywordDetected blazars
dc.subject.keywordSource catalog
dc.subject.keywordMajor upgrade
dc.subject.keywordHelical jets
dc.subject.keywordCrab-nebula.
dc.subject.ucmElectricidad
dc.subject.ucmElectrónica (Física)
dc.subject.ucmFísica nuclear
dc.subject.unesco2202.03 Electricidad
dc.subject.unesco2207 Física Atómica y Nuclear
dc.titleInvestigating the peculiar emission from the new VHE gamma-ray source H1722+119
dc.typejournal article
dc.volume.number459
dspace.entity.typePublication
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