J/A+A/702/A38ivo://CDS.VizieR/J/A+A/702/A38doi:10.26093/cds/vizier/bc-ny/ldiCDSAbe K.Abe S.Abhir J.Abhishek A.Acciari V.A.Aguasca-Cabot A.,Agudo I.Aniello T.Ansoldi S.Antonelli L.A.Arbet Engels A.,Arcaro C.Arnesen T.T.H.Asano K.Babic A.Bakshi C.,Barres de Almeida U.Barrio J.A.Barrios-Jimenez L.Batkovic I.,Baxter J.Becerra Gonzalez J.Bednarek W.Bernardini E.Bernete J.,Berti A.Besenrieder J.Bigongiari C.Biland A.Blanch O.Bonnoli G.,Bosnjak Z.Bronzini E.Burelli I.Campoy-Ordaz A.Carosi A.Carosi R.,Carretero-Castrillo M.Castro-Tirado A.J.Cerasole D.Ceribella G.,Chai Y.Cifuentes A.Contreras J.L.Cortina J.Covino S.D'Amico G.,Da Vela P.Dazzi F.De Angelis A.De Lotto B.de Menezes R.Delfino M.,Delgado J.Delgado Mendez C.Di Pierro F.Di Tria R.Di Venere L.,Dinesh A.Dominis Prester D.Donini A.Dorner D.Doro M.,Eisenberger L.Elsaesser D.Escudero J.Farina L.Foffano L.Font L.,Frose S.Fukazawa Y.Garcia Lopez R.J.Garczarczyk M.Gasparyan S.,Gaug M.Giesbrecht Paiva J.G.Giglietto N.Giordano F.Gliwny P.,Godinovic N.Gradetzke T.Grau R.Green D.Green J.G.Gunther P.,Hadasch D.Hahn A.Hassan T.Heckmann L.Herrera Llorente J.Hrupec D.,Imazawa R.Israyelyan D.Jahanvi J.Jimenez Martinez I.,Jimenez Quiles J.Jormanainen J.Kankkunen S.Kayanoki T.Konrad J.,Kouch P.M.Kubo H.Kushida J.Lainez M.Lamastra A.Lindfors E.,Lombardi S.Longo F.Lopez-Coto R.Lopez-Moya M.Lopez-Oramas A.,Loporchio S.Lulic L.Lyard E.Majumdar P.Makariev M.Mallamaci M.,Maneva G.Manganaro M.Mangano S.Mannheim K.Marchesi S.Mariotti M.,Martinez M.Marusevec P.Mas-Aguilar A.Mazin D.Menchiari S.,Mendez Gallego J.Menon S.Miceli D.Miranda J.M.Mirzoyan R.,Molero Gonzalez M.Molina E.Mondal H.A.Moralejo A.Nakamori T.,Nanci C.Neustroev V.Nickel L.Nievas Rosillo M.Nigro C.Nikolic L.,Nilsson K.Nishijima K.Noda K.Nozaki S.Ohtani Y.Okumura A.,Otero-Santos J.Paiano S.Paneque D.Paoletti R.Paredes J.M.,Peresano M.Persic M.Pihet M.Pirola G.Podobnik F.Prada Moroni P.G.,Prandini E.Rhode W.Ribo M.Rico J.Sahakyan N.Saito T.,Saturni F.G.Schmitz K.Schmuckermaier F.Schubert J.L.Schweizer T.,Sciaccaluga A.Silvestri G.Simongini A.Sitarek J.Sliusar V.,Sobczynska D.Stamerra A.Striskovic J.Strom D.Strzys M.Suda Y.,Tajima H.Takahashi M.Takeishi R.Temnikov P.Terauchi K.Terzic T.,Teshima M.Tutone A.Ubach S.van Scherpenberg J.Vazquez Acosta M.,Ventura S.Verna G.Viale I.Vigliano A.Vigorito C.F.Visentin E.,Vitale V.Vovk I.Walter R.Wersig F.Will M.Yamamoto T.,Yeung P.K.H.Neronov A.Peretti E.Peron G.2026-08-03T06:58:23Z2025-10-03T09:11:39ZCDS support team

CDS, Observatoire de Strasbourg, 11 rue de l'Universite, F-67000 Strasbourg, France

cds-question@unistra.frseyfert-galaxiesgamma-ray-astronomySeyfert galaxies are emerging as a promising source class of high-energy neutrinos. The Seyfert galaxies NGC 4151 and NGC 1068 have respectively come up as the most promising counterparts of a 3sigma and of a 4.2sigma neutrino excesses detected by IceCube in the TeV energy range. Constraining the very high energy (VHE) emission associated with the neutrino signal is crucial to unveiling the mechanism and site of neutrino production. In this work, we present the first results of the VHE observations (~29 hours) of NGC 4151 with the MAGIC telescopes. We detected no gamma-ray excess in the direction of NGC 4151, and we derived constraining upper limits on the VHE gamma-ray flux. The integral flux upper limit (at the 95% confidence level) above 200GeV is f=2.3e-12cm^-2^s^-1. Comparison of the MAGIC and IceCube measurements suggests the presence of a gamma-ray obscured accelerator, and it allowed us to constrain the gamma-ray optical depth and the size of the neutrino production site.2025A&A...702A..38Ahttps://cdsarc.cds.unistra.fr/viz-bin/cat/J/A+A/702/A38CatalogResearchIsServedByTAP VizieR generic servicerelated-toJ/AZh/71/189 : Gas Kinematics from Halpha line in NGC 4151 (Sergeev, 1994)J/A+A/324/904 : NGC 4151 line-continuum diagram sequences (Malkov+ 1997)J/PAZh/25/403 : Optical variability of NGC 4151 (Lyuty+, 1999)J/PAZh/27/83 : Nuclear activity of NGC 4151 in 1989-2000 (Doroshenko+, 2001)J/A+A/486/99 : Long-term spectral variability of NGC 4151 (Shapovalova+, 2008)J/ApJ/670/105 : Velocity profile of NGC 4151 (Onken+, 2007)J/ApJ/840/41 : X-ray/UV Swift monitoring of NGC 4151 (Edelson+, 2017)J/ApJ/902/26 : HST opt. + H-band obs. of Cepheids in NGC4151 (Yuan+, 2020)J/ApJ/912/126 : B and JHKL light curves of NGC 4151 (Lyu+, 2021)J/ApJ/936/75 : Spectroscopy and photometry follow up for NGC 4151 (Li+, 2022)https://cds.unistra.fr/vizier-org/licences_vizier.htmlhttps://vizier.cds.unistra.fr/viz-bin/VizieR-2?-source=J/A+A/702/A38https://vizier.iucaa.in/viz-bin/VizieR-2?-source=J/A+A/702/A38http://vizieridia.saao.ac.za/viz-bin/VizieR-2?-source=J/A+A/702/A38https://vizier.cds.unistra.fr/viz-bin/votable?-source=J/A+A/702/A38https://vizier.iucaa.in/viz-bin/votable?-source=J/A+A/702/A38http://vizieridia.saao.ac.za/viz-bin/votable?-source=J/A+A/702/A38GETtext/xml+votablehttps://tapvizier.cds.unistra.fr/TAPVizieR/tapGamma-raydefaultJ/A+A/702/A38/figure1Squared angular distance ({theta}^2^) to the NGC 4151 position distribution shows the number of gamma-ray candidate events as a function of the squared angular separation between the reconstructed gamma-ray direction and the NGC 4151 positionrecnoRecord number assigned by the VizieR team. Should Not be used for identification.meta.recordinttheta2Off-axis squared angledeg**2phys.angSizefloatNonNumber of ON eventsmeta.numberdoubleNoffNumber of OFF eventsmeta.numberdoubleDNoffOFF events uncertaintystat.errorfloatJ/A+A/702/A38/table1Spectral energy distribution of Fig. 2 and Fig. 3, only MAGIC datarecnoRecord number assigned by the VizieR team. Should Not be used for identification.meta.recordintE283Energy (index = 2.83)TeVphys.energyfloatE200Energy (index = 2.00)TeVphys.energyfloatb_EEnergy bin width lowTeVinstr.bandwidthfloatB_EEnergy bin width upTeVinstr.bandwidthfloatE2FE283Upper limit on photon flux at E2831e-13TeV.cm**-2.s**-1phot.flux.density;em.gamma.hardfloatE2FE200Upper limit on photon flux at E2001e-13TeV.cm**-2.s**-1phot.flux.density;em.gamma.hardfloat