¤ OpenAccess: Hybrid

This work has “Hybrid” OA status. This means it is free under an open license in a toll-access journal.

The Blazar TXS 0506+056 Associated with a High-energy Neutrino: Insights into Extragalactic Jets and Cosmic-Ray Acceleration

S. Ansoldi,L. A. Antonelli,Cornelia Arcaro,Dominik Baack,Ana Babić,B. Banerjee,P. Bangale,U. Barres de Almeida,J. A. Barrio,J. Becerra González,W. Bednarek,E. Bernardini,R. Ch. Berse,Alessio Berti,Jürgen Besenrieder,W. Bhattacharyya,C. Bigongiari,A. Biland,O. Blanch,G. Bonnoli,R. Carosi,Giovanni Ceribella,A. Chatterjee,S. M. Colak,P. Colin,E. Colombo,J. L. Contreras,J. Cortina,S. Covino,P. Cumani,V. D’Elia,P. Da Vela,F. Dazzi,A. De Angelis,B. De Lotto,M. Delfino,J. Delgado,F. Di Pierro,A. Domínguez,D. Dominis Prester,D. Dorner,M. Doro,S. Einecke,D. Elsäesser,Vandad Fallah Ramazani,Alicia Fattorini,A. Fernández-Barral,G. Ferrara,D. Fidalgo,Luca Foffano,M. V. Fonseca,L. Font,C. Fruck,S. Gallozzi,R. J. García López,M. Garczarczyk,M. Gaug,P. Giammaria,Nikola Godinović,D. Guberman,D. Hadasch,Alexander Hahn,T. Hassan,M. Hayashida,Javier Herrera,J. Hoang,Dario Hrupec,Susumu Inoue,Kazuma Ishio,Yuki Iwamura,Y. Konno,H. Kubo,J. Kushida,Alessandra Lamastra,D. Lelas,F. Leone,E. Lindfors,S. Lombardi,F. Longo,M. López,C. Maggio,P. Majumdar,M. Makariev,G. Maneva,M. Manganaro,Karl Mannheim,L. Maraschi,M. Mariotti,M. Martı́nez,S. Masuda,D. Mazin,K. Mielke,M. Minev,J. M. Miranda,R. Mirzoyan,A. Moralejo,V. Moreno,E. Moretti,V. Neustroev,A. Niedźwiecki,M. Nievas Rosillo,Cosimo Nigro,K. Nilsson,D. Ninci,K. Nishijima,K. Noda,L. Nogués,S. Paiano,J. Palacio,D. Paneque,R. Paoletti,J. M. Paredes,G. Pedaletti,Pablo Peñil,M. Peresano,M. Peršić,K. Pfrang,Pier Giorgio Prada Moroni,E. Prandini,Ivica Puljak,J. Rodriguez Garcia,W. Rhode,M. Ribó,J. Rico,Chiara Righi,A. Rugliancich,L. Saha,Takayuki Saito,K. Satalecka,T. Schweizer,J. Sitarek,Iva Šnidarić,D. Sobczyńska,A. Stamerra,M. Strzys,Tihomir Surić,F. Tavecchio,P. Temnikov,Tomislav Terzić,M. Teshima,N. Torres-Albà,S. Tsujimoto,G. Vanzo,M. Vazquez Acosta,I. Vovk,J. E. Ward,Martin Will,Darko Zarić,M. Cerruti

Physics

Blazar

BL Lac object

2018

Abstract A neutrino with energy ∼290 TeV, IceCube-170922A, was detected in coincidence with the BL Lac object TXS 0506+056 during enhanced gamma-ray activity, with chance coincidence being rejected at ∼3 σ level. We monitored the object in the very-high-energy (VHE) band with the Major Atmospheric Gamma-ray Imaging Cherenkov (MAGIC) telescopes for ∼41 hr from 1.3 to 40.4 days after the neutrino detection. Day-timescale variability is clearly resolved. We interpret the quasi-simultaneous neutrino and broadband electromagnetic observations with a novel one-zone lepto-hadronic model, based on interactions of electrons and protons co-accelerated in the jet with external photons originating from a slow-moving plasma sheath surrounding the faster jet spine. We can reproduce the multiwavelength spectra of TXS 0506+056 with neutrino rate and energy compatible with IceCube-170922A, and with plausible values for the jet power of <?CDATA $\sim {10}^{45}-4\times {10}^{46}\,\mathrm{erg}\,{{\rm{s}}}^{-1}$?> . The steep spectrum observed by MAGIC is concordant with internal γγ absorption above ∼100 GeV entailed by photohadronic production of a ∼290 TeV neutrino, corroborating a genuine connection between the multi-messenger signals. In contrast to previous predictions of predominantly hadronic emission from neutrino sources, the gamma-rays can be mostly ascribed to inverse Compton upscattering of external photons by accelerated electrons. The X-ray and VHE bands provide crucial constraints on the emission from both accelerated electrons and protons. We infer that the maximum energy of protons in the jet comoving frame can be in the range ∼10 14 – 10 18 eV.

Cite this:

Generate Citation

“The Blazar TXS 0506+056 Associated with a High-energy Neutrino: Insights into Extragalactic Jets and Cosmic-Ray Acceleration” is a paper by S. Ansoldi L. A. Antonelli Cornelia Arcaro Dominik Baack Ana Babić B. Banerjee P. Bangale U. Barres de Almeida J. A. Barrio J. Becerra González W. Bednarek E. Bernardini R. Ch. Berse Alessio Berti Jürgen Besenrieder W. Bhattacharyya C. Bigongiari A. Biland O. Blanch G. Bonnoli R. Carosi Giovanni Ceribella A. Chatterjee S. M. Colak P. Colin E. Colombo J. L. Contreras J. Cortina S. Covino P. Cumani V. D’Elia P. Da Vela F. Dazzi A. De Angelis B. De Lotto M. Delfino J. Delgado F. Di Pierro A. Domínguez D. Dominis Prester D. Dorner M. Doro S. Einecke D. Elsäesser Vandad Fallah Ramazani Alicia Fattorini A. Fernández-Barral G. Ferrara D. Fidalgo Luca Foffano M. V. Fonseca L. Font C. Fruck S. Gallozzi R. J. García López M. Garczarczyk M. Gaug P. Giammaria Nikola Godinović D. Guberman D. Hadasch Alexander Hahn T. Hassan M. Hayashida Javier Herrera J. Hoang Dario Hrupec Susumu Inoue Kazuma Ishio Yuki Iwamura Y. Konno H. Kubo J. Kushida Alessandra Lamastra D. Lelas F. Leone E. Lindfors S. Lombardi F. Longo M. López C. Maggio P. Majumdar M. Makariev G. Maneva M. Manganaro Karl Mannheim L. Maraschi M. Mariotti M. Martı́nez S. Masuda D. Mazin K. Mielke M. Minev J. M. Miranda R. Mirzoyan A. Moralejo V. Moreno E. Moretti V. Neustroev A. Niedźwiecki M. Nievas Rosillo Cosimo Nigro K. Nilsson D. Ninci K. Nishijima K. Noda L. Nogués S. Paiano J. Palacio D. Paneque R. Paoletti J. M. Paredes G. Pedaletti Pablo Peñil M. Peresano M. Peršić K. Pfrang Pier Giorgio Prada Moroni E. Prandini Ivica Puljak J. Rodriguez Garcia W. Rhode M. Ribó J. Rico Chiara Righi A. Rugliancich L. Saha Takayuki Saito K. Satalecka T. Schweizer J. Sitarek Iva Šnidarić D. Sobczyńska A. Stamerra M. Strzys Tihomir Surić F. Tavecchio P. Temnikov Tomislav Terzić M. Teshima N. Torres-Albà S. Tsujimoto G. Vanzo M. Vazquez Acosta I. Vovk J. E. Ward Martin Will Darko Zarić M. Cerruti published in 2018. It has an Open Access status of “hybrid”. You can read and download a PDF Full Text of this paper here.