Multiwavelength Observations of the Blazar PKS 0735+178 in Spatial and Temporal Coincidence with an Astrophysical Neutrino Candidate IceCube-211208A-Reference-Cited by-同舟云学术

Multiwavelength Observations of the Blazar PKS 0735+178 in Spatial and Temporal Coincidence with an Astrophysical Neutrino Candidate IceCube-211208A

Published:2023-08-23 Issue:1 Volume:954 Page:70
ISSN:0004-637X
Container-title:The Astrophysical Journal
language:
Short-container-title:ApJ

Author:

Acharyya A.^ORCID,Adams C. B.^ORCID,Archer A.,Bangale P.^ORCID,Bartkoske J. T.^ORCID,Batista P.^ORCID,Benbow W.^ORCID,Brill A.^ORCID,Buckley J. H.^ORCID,Christiansen J. L.,Chromey A. J.,Errando M.^ORCID,Falcone A.^ORCID,Feng Q.^ORCID,Foote G. M.^ORCID,Fortson L.^ORCID,Furniss A.^ORCID,Gallagher G.,Hanlon W.^ORCID,Hanna D.^ORCID,Hervet O.^ORCID,Hinrichs C. E.^ORCID,Hoang J.,Holder J.^ORCID,Humensky T. B.^ORCID,Jin W.^ORCID,Kaaret P.^ORCID,Kertzman M.,Kherlakian M.,Kieda D.^ORCID,Kleiner T. K.^ORCID,Korzoun N.^ORCID,Kumar S.^ORCID,Lang M. J.^ORCID,Lundy M.^ORCID,Maier G.^ORCID,McGrath C. E,Millard M. J.^ORCID,Millis J.,Mooney C. L.^ORCID,Moriarty P.^ORCID,Mukherjee R.^ORCID,O’Brien S.^ORCID,Ong R. A.^ORCID,Pohl M.^ORCID,Pueschel E.^ORCID,Quinn J.^ORCID,Ragan K.^ORCID,Reynolds P. T.,Ribeiro D.^ORCID,Roache E.,Sadeh I.^ORCID,Sadun A. C.^ORCID,Saha L.^ORCID,Santander M.^ORCID,Sembroski G. H.,Shang R.^ORCID,Splettstoesser M.,Talluri A. Kaushik,Tucci J. V.,Vassiliev V. V.,Weinstein A.,Williams D. A.^ORCID,Wong S. L.^ORCID,Woo J.^ORCID,Aharonian F.,Aschersleben J.,Backes M.^ORCID,Martins V. Barbosa^ORCID,Batzofin R.^ORCID,Becherini Y.^ORCID,Berge D.^ORCID,Bernlöhr K.^ORCID,Bi B.,Böttcher M.^ORCID,Boisson C.^ORCID,Bolmont J.^ORCID,de Bony de Lavergne M.,Borowska J.,Bouyahiaoui M.,Bradascio F.^ORCID,Breuhaus M.^ORCID,Brose R.^ORCID,Brun F.^ORCID,Bruno B.,Bulik T.^ORCID,Burger-Scheidlin C.,Caroff S.^ORCID,Casanova S.^ORCID,Cecil R.,Celic J.,Cerruti M.^ORCID,Chand T.,Chandra S.,Chen A.^ORCID,Chibueze J.^ORCID,Chibueze O.,Cotter G.^ORCID,Dai S.^ORCID,Mbarubucyeye J. Damascene^ORCID,Djannati-Ataï A.^ORCID,Dmytriiev A.,Doroshenko V.^ORCID,Einecke S.,Ernenwein J.-P.,de Clairfontaine G. Fichet^ORCID,Filipovic M.^ORCID,Fontaine G.^ORCID,Füßling M.,Funk S.^ORCID,Gabici S.,Ghafourizadeh S.,Giavitto G.^ORCID,Glawion D.^ORCID,Glicenstein J. F.^ORCID,Goswami P.,Grolleron G.,Haerer L.,Hinton J. A.,Holch T. L.^ORCID,Holler M.,Horns D.,Jamrozy M.^ORCID,Jankowsky F.,Joshi V.^ORCID,Jung-Richardt I.,Kasai E.,Katarzyński K.,Khatoon R.,Khélifi B.^ORCID,Klepser S.^ORCID,Kluźniak W.,Kosack K.^ORCID,Kostunin D.^ORCID,Lang R. G.,Le Stum S.,Lemière A.,Lenain J.-P.^ORCID,Leuschner F.^ORCID,Lohse T.,Luashvili A.^ORCID,Lypova I.,Mackey J.^ORCID,Malyshev D.^ORCID,Marandon V.^ORCID,Marchegiani P.^ORCID,Marcowith A.,Martí-Devesa G.^ORCID,Marx R.^ORCID,Mitchell A.^ORCID,Moderski R.,Mohrmann L.^ORCID,Montanari A.^ORCID,Moulin E.^ORCID,Murach T.^ORCID,Nakashima K.,Niemiec J.^ORCID,Noel A. Priyana,O’Brien P.,Olivera-Nieto L.^ORCID,de Ona Wilhelmi E.,Ostrowski M.^ORCID,Panny S.^ORCID,Panter M.,Peron G.,Prokhorov D. A.,Pühlhofer G.^ORCID,Punch M.^ORCID,Quirrenbach A.,Reichherzer P.^ORCID,Reimer A.^ORCID,Reimer O.,Ren H.,Renaud M.,Rieger F.,Rudak B.^ORCID,Ruiz-Velasco E.^ORCID,Sahakian V.^ORCID,Santangelo A.^ORCID,Sasaki M.^ORCID,Schäfer J.,Schüssler F.^ORCID,Schutte H. M.^ORCID,Schwanke U.,Shapopi J. N. S.^ORCID,Specovius A.^ORCID,Spencer S.^ORCID,Stawarz Ł.,Steenkamp R.,Steinmassl S.^ORCID,Sushch I.^ORCID,Suzuki H.,Takahashi T.,Tanaka T.^ORCID,Terrier R.^ORCID,van Eldik C.^ORCID,Vecchi M.,Veh J.^ORCID,Venter C.,Vink J.,White R.,Wierzcholska A.^ORCID,Wong Yu Wun,Zacharias M.^ORCID,Zargaryan D.^ORCID,Zdziarski A. A.^ORCID,Zech A.,Zouari S.^ORCID,Żywucka N.^ORCID,Mori K., ,

Abstract

Abstract We report on multiwavelength target-of-opportunity observations of the blazar PKS 0735+178, located 2.°2 away from the best-fit position of the IceCube neutrino event IceCube-211208A detected on 2021 December 8. The source was in a high-flux state in the optical, ultraviolet, X-ray, and GeV γ-ray bands around the time of the neutrino event, exhibiting daily variability in the soft X-ray flux. The X-ray data from Swift-XRT and NuSTAR characterize the transition between the low-energy and high-energy components of the broadband spectral energy distribution (SED), and the γ-ray data from Fermi-LAT, VERITAS, and H.E.S.S. require a spectral cutoff near 100 GeV. Both the X-ray and γ-ray measurements provide strong constraints on the leptonic and hadronic models. We analytically explore a synchrotron self-Compton model, an external Compton model, and a lepto-hadronic model. Models that are entirely based on internal photon fields face serious difficulties in matching the observed SED. The existence of an external photon field in the source would instead explain the observed γ-ray spectral cutoff in both the leptonic and lepto-hadronic models and allow a proton jet power that marginally agrees with the Eddington limit in the lepto-hadronic model. We show a numerical lepto-hadronic model with external target photons that reproduces the observed SED and is reasonably consistent with the neutrino event despite requiring a high jet power.

Funder

National Aeronautics and Space Administration

National Science Foundation

Publisher

American Astronomical Society

Subject

Space and Planetary Science,Astronomy and Astrophysics

Link

https://iopscience.iop.org/article/10.3847/1538-4357/ace327/pdf

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