Related papers: Correlation of highly variable blazars with TeV Ic…

Implications of a proton blazar inspired model on correlated observations of neutrinos with gamma-ray flaring blazars

Recent detection of the neutrino events IceCube-170922A, 13 muon-neutrino events observed in 2014-2015 and IceCube-141209A by IceCube observatory from the Blazars, namely TXS 0506+056, PKS 0502+049/TXS 0506+056 and GB6 J1040+0617…

High Energy Astrophysical Phenomena · Physics 2020-04-08 Prabir Banik , Arunava Bhadra , Madhurima Pandey , Debasish Majumdar

Gammas and neutrinos from TXS 0506+056

While blazars have long been one of the candidates in the search for the origin of ultra-high energy cosmic rays and astrophysical neutrinos, the BL Lac object TXS 0506+056 is the first extragalactic source that is correlated with some…

High Energy Astrophysical Phenomena · Physics 2018-10-23 M. Cerruti , A. Zech , C. Boisson , G. Emery , S. Inoue , J. -P. Lenain

Blazar Flares as an Origin of High-Energy Cosmic Neutrinos?

We consider implications of high-energy neutrino emission from blazar flares, including the recent event IceCube-170922A and the 2014-2015 neutrino flare that could originate from TXS 0506+056. First, we discuss their contribution to the…

High Energy Astrophysical Phenomena · Physics 2018-10-11 Kohta Murase , Foteini Oikonomou , Maria Petropoulou

Search for correlations of high-energy neutrinos detected in IceCube with radio-bright AGN and gamma-ray emission from blazars

The IceCube Neutrino Observatory sends realtime neutrino alerts with high probability of being astrophysical in origin. We present a new method to correlate these events and possible candidate sources using $2,089$ blazars from the…

High Energy Astrophysical Phenomena · Physics 2023-04-26 R. Abbasi , M. Ackermann , J. Adams , S. K. Agarwalla , J. A. Aguilar , M. Ahlers , J. M. Alameddine , N. M. Amin , K. Andeen , G. Anton , C. Argüelles , Y. Ashida , S. Athanasiadou , S. N. Axani , X. Bai , A. Balagopal V. , M. Baricevic , S. W. Barwick , V. Basu , R. Bay , J. J. Beatty , K. -H. Becker , J. Becker Tjus , J. Beise , C. Bellenghi , C. Benning , S. BenZvi , D. Berley , E. Bernardini , D. Z. Besson , G. Binder , E. Blaufuss , S. Blot , F. Bontempo , J. Y. Book , C. Boscolo Meneguolo , S. Böser , O. Botner , J. Böttcher , E. Bourbeau , J. Braun , B. Brinson , J. Brostean-Kaiser , R. T. Burley , R. S. Busse , D. Butterfield , M. A. Campana , K. Carloni , E. G. Carnie-Bronca , S. Chattopadhyay , N. Chau , C. Chen , Z. Chen , D. Chirkin , S. Choi , B. A. Clark , L. Classen , A. Coleman , G. H. Collin , A. Connolly , J. M. Conrad , P. Coppin , P. Correa , S. Countryman , D. F. Cowen , P. Dave , C. De Clercq , J. J. DeLaunay , D. Delgado , H. Dembinski , S. Deng , K. Deoskar , A. Desai , P. Desiati , K. D. de Vries , G. de Wasseige , T. DeYoung , A. Diaz , J. C. Díaz-Vélez , M. Dittmer , A. Domi , H. Dujmovic , M. A. DuVernois , T. Ehrhardt , P. Eller , S. El Mentawi , D. Elsässer , R. Engel , H. Erpenbeck , J. Evans , P. A. Evenson , K. L. Fan , K. Fang , K. Farrag , A. R. Fazely , A. Fedynitch , N. Feigl , S. Fiedlschuster , C. Finley , L. Fischer , D. Fox , A. Franckowiak , E. Friedman , A. Fritz , P. Fürst , T. K. Gaisser , J. Gallagher , E. Ganster , A. Garcia , L. Gerhardt , A. Ghadimi , C. Glaser , T. Glauch , T. Glüsenkamp , N. Goehlke , J. G. Gonzalez , S. Goswami , D. Grant , S. J. Gray , O. Gries , S. Griffin , S. Griswold , C. Günther , P. Gutjahr , C. Haack , A. Hallgren , R. Halliday , L. Halve , F. Halzen , H. Hamdaoui , M. Ha Minh , K. Hanson , J. Hardin , A. A. Harnisch , P. Hatch , A. Haungs , K. Helbing , J. Hellrung , F. Henningsen , L. Heuermann , N. Heyer , S. Hickford , A. Hidvegi , C. Hill , G. C. Hill , K. D. Hoffman , S. Hori , K. Hoshina , W. Hou , T. Huber , K. Hultqvist , M. Hünnefeld , R. Hussain , K. Hymon , S. In , A. Ishihara , M. Jacquart , O. Janik , M. Jansson , G. S. Japaridze , M. Jeong , M. Jin , B. J. P. Jones , D. Kang , W. Kang , X. Kang , A. Kappes , D. Kappesser , L. Kardum , T. Karg , M. Karl , A. Karle , U. Katz , M. Kauer , J. L. Kelley , A. Khatee Zathul , A. Kheirandish , J. Kiryluk , S. R. Klein , A. Kochocki , R. Koirala , H. Kolanoski , T. Kontrimas , L. Köpke , C. Kopper , D. J. Koskinen , P. Koundal , M. Kovacevich , M. Kowalski , T. Kozynets , J. Krishnamoorthi , K. Kruiswijk , E. Krupczak , A. Kumar , E. Kun , N. Kurahashi , N. Lad , C. Lagunas Gualda , M. Lamoureux , M. J. Larson , S. Latseva , F. Lauber , J. P. Lazar , J. W. Lee , K. Leonard DeHolton , A. Leszczyńska , M. Lincetto , Q. R. Liu , M. Liubarska , E. Lohfink , C. Love , C. J. Lozano Mariscal , L. Lu , F. Lucarelli , A. Ludwig , W. Luszczak , Y. Lyu , J. Madsen , K. B. M. Mahn , Y. Makino , E. Manao , S. Mancina , W. Marie Sainte , I. C. Mariş , S. Marka , Z. Marka , M. Marsee , I. Martinez-Soler , R. Maruyama , F. Mayhew , T. McElroy , F. McNally , J. V. Mead , K. Meagher , S. Mechbal , A. Medina , M. Meier , Y. Merckx , L. Merten , J. Micallef , T. Montaruli , R. W. Moore , Y. Morii , R. Morse , M. Moulai , T. Mukherjee , R. Naab , R. Nagai , M. Nakos , U. Naumann , J. Necker , A. Negi , M. Neumann , H. Niederhausen , M. U. Nisa , A. Noell , S. C. Nowicki , A. Obertacke Pollmann , V. O'Dell , M. Oehler , B. Oeyen , A. Olivas , R. Orsoe , J. Osborn , E. O'Sullivan , H. Pandya , N. Park , G. K. Parker , E. N. Paudel , L. Paul , C. Pérez de los Heros , J. Peterson , S. Philippen , S. Pieper , A. Pizzuto , M. Plum , A. Pontén , Y. Popovych , M. Prado Rodriguez , B. Pries , R. Procter-Murphy , G. T. Przybylski , J. Rack-Helleis , K. Rawlins , Z. Rechav , A. Rehman , P. Reichherzer , G. Renzi , E. Resconi , S. Reusch , W. Rhode , B. Riedel , A. Rifaie , E. J. Roberts , S. Robertson , S. Rodan , G. Roellinghoff , M. Rongen , C. Rott , T. Ruhe , L. Ruohan , D. Ryckbosch , I. Safa , J. Saffer , D. Salazar-Gallegos , P. Sampathkumar , S. E. Sanchez Herrera , A. Sandrock , M. Santander , S. Sarkar , S. Sarkar , J. Savelberg , P. Savina , M. Schaufel , H. Schieler , S. Schindler , L. Schlickmann , B. Schlüter , F. Schlüter , T. Schmidt , J. Schneider , F. G. Schröder , L. Schumacher , G. Schwefer , S. Sclafani , D. Seckel , M. Seikh , S. Seunarine , R. Shah , A. Sharma , S. Shefali , N. Shimizu , M. Silva , B. Skrzypek , B. Smithers , R. Snihur , J. Soedingrekso , A. Søgaard , D. Soldin , P. Soldin , G. Sommani , C. Spannfellner , G. M. Spiczak , C. Spiering , M. Stamatikos , T. Stanev , T. Stezelberger , T. Stürwald , T. Stuttard , G. W. Sullivan , I. Taboada , S. Ter-Antonyan , M. Thiesmeyer , W. G. Thompson , J. Thwaites , S. Tilav , K. Tollefson , C. Tönnis , S. Toscano , D. Tosi , A. Trettin , C. F. Tung , R. Turcotte , J. P. Twagirayezu , B. Ty , M. A. Unland Elorrieta , A. K. Upadhyay , K. Upshaw , N. Valtonen-Mattila , J. Vandenbroucke , N. van Eijndhoven , D. Vannerom , J. van Santen , J. Vara , J. Veitch-Michaelis , M. Venugopal , M. Vereecken , S. Verpoest , D. Veske , C. Walck , C. Weaver , P. Weigel , A. Weindl , J. Weldert , C. Wendt , J. Werthebach , M. Weyrauch , N. Whitehorn , C. H. Wiebusch , N. Willey , D. R. Williams , A. Wolf , M. Wolf , G. Wrede , X. W. Xu , J. P. Yanez , E. Yildizci , S. Yoshida , R. Young , F. Yu , S. Yu , T. Yuan , Z. Zhang , P. Zhelnin

Investigation of two Fermi-LAT gamma-ray blazars coincident with high-energy neutrinos detected by IceCube

After the identification of the gamma-ray blazar TXS 0506+056 as the first compelling IceCube neutrino source candidate, we perform a systematic analysis of all high-energy neutrino events satisfying the IceCube realtime trigger criteria.…

High Energy Astrophysical Phenomena · Physics 2019-08-07 S. Garrappa , S. Buson , A. Franckowiak , B. J. Shappee , J. F. Beacom , S. Dong , T. W. -S. Holoien , C. S. Kochanek , J. L. Prieto , K. Z. Stanek , T. A. Thompson , M. G. Aartsen , M. Ackermann , J. Adams , J. A. Aguilar , M. Ahlers , M. Ahrens , C. Alispach , K. Andeen , T. Anderson , I. Ansseau , G. Anton , C. Argüelles , J. Auffenberg , S. Axani , P. Backes , H. Bagherpour , X. Bai , A. Barbano , S. W. Barwick , V. Baum , R. Bay , J. J. Beatty , K. -H. Becker , J. Becker Tjus , S. BenZvi , D. Berley , E. Bernardini , D. Z. Besson , G. Binder , D. Bindig , E. Blaufuss , S. Blot , C. Bohm , M. Börner , S. Böser , O. Botner , E. Bourbeau , J. Bourbeau , F. Bradascio , J. Braun , H. -P. Bretz , S. Bron , J. Brostean-Kaiser , A. Burgman , R. S. Busse , T. Carver , C. Chen , E. Cheung , D. Chirkin , K. Clark , L. Classen , G. H. Collin , J. M. Conrad , P. Coppin , P. Correa , D. F. Cowen , R. Cross , P. Dave , J. P. A. M. de André , C. De Clercq , J. J. DeLaunay , H. Dembinski , K. Deoskar , S. De Ridder , P. Desiati , K. D. de Vries , G. de Wasseige , M. de With , T. DeYoung , A. Diaz , J. C. Díaz-Vélez , H. Dujmovic , M. Dunkman , E. Dvorak , B. Eberhardt , T. Ehrhardt , P. Eller , P. A. Evenson , S. Fahey , A. R. Fazely , J. Felde , K. Filimonov , C. Finley , A. Franckowiak , E. Friedman , A. Fritz , T. K. Gaisser , J. Gallagher , E. Ganster , S. Garrappa , L. Gerhardt , K. Ghorbani , T. Glauch , T. Glüsenkamp , A. Goldschmidt , J. G. Gonzalez , D. Grant , Z. Griffith , M. Günder , M. Gündüz , C. Haack , A. Hallgren , L. Halve , F. Halzen , K. Hanson , D. Hebecker , D. Heereman , K. Helbing , R. Hellauer , F. Henningsen , S. Hickford , J. Hignight , G. C. Hill , K. D. Hoffman , R. Hoffmann , T. Hoinka , B. Hokanson-Fasig , K. Hoshina , F. Huang , M. Huber , K. Hultqvist , M. Hünnefeld , R. Hussain , S. In , N. Iovine , A. Ishihara , E. Jacobi , G. S. Japaridze , M. Jeong , K. Jero , B. J. P. Jones , W. Kang , A. Kappes , D. Kappesser , T. Karg , M. Karl , A. Karle , U. Katz , M. Kauer , A. Keivani , J. L. Kelley , A. Kheirandish , J. Kim , T. Kintscher , J. Kiryluk , T. Kittler , S. R. Klein , R. Koirala , H. Kolanoski , L. Köpke , C. Kopper , S. Kopper , D. J. Koskinen , M. Kowalski , K. Krings , G. Krückl , N. Kulacz , S. Kunwar , N. Kurahashi , A. Kyriacou , M. Labare , J. L. Lanfranchi , M. J. Larson , F. Lauber , J. P. Lazar , K. Leonard , M. Leuermann , Q. R. Liu , E. Lohfink , C. J. Lozano Mariscal , L. Lu , F. Lucarelli , J. Lünemann , W. Luszczak , J. Madsen , G. Maggi , K. B. M. Mahn , Y. Makino , K. Mallot , S. Mancina , I. C. Mariş , R. Maruyama , K. Mase , R. Maunu , K. Meagher , M. Medici , A. Medina , M. Meier , S. Meighen-Berger , T. Menne , G. Merino , T. Meures , S. Miarecki , J. Micallef , G. Momenté , T. Montaruli , R. W. Moore , M. Moulai , R. Nagai , R. Nahnhauer , P. Nakarmi , U. Naumann , G. Neer , H. Niederhausen , S. C. Nowicki , D. R. Nygren , A. Obertacke Pollmann , A. Olivas , A. O'Murchadha , E. O'Sullivan , T. Palczewski , H. Pandya , D. V. Pankova , N. Park , P. Peiffer , C. Pérez de los Heros , D. Pieloth , E. Pinat , A. Pizzuto , M. Plum , P. B. Price , G. T. Przybylski , C. Raab , A. Raissi , M. Rameez , L. Rauch , K. Rawlins , I. C. Rea , R. Reimann , B. Relethford , G. Renzi , E. Resconi , W. Rhode , M. Richman , S. Robertson , M. Rongen , C. Rott , T. Ruhe , D. Ryckbosch , D. Rysewyk , I. Safa , S. E. Sanchez Herrera , A. Sandrock , J. Sandroos , M. Santander , S. Sarkar , S. Sarkar , K. Satalecka , M. Schaufel , P. Schlunder , T. Schmidt , A. Schneider , J. Schneider , L. Schumacher , S. Sclafani , D. Seckel , S. Seunarine , M. Silva , R. Snihur , J. Soedingrekso , D. Soldin , M. Song , G. M. Spiczak , C. Spiering , J. Stachurska , M. Stamatikos , T. Stanev , A. Stasik , R. Stein , J. Stettner , A. Steuer , T. Stezelberger , R. G. Stokstad , A. Stößl , N. L. Strotjohann , T. Stuttard , G. W. Sullivan , M. Sutherland , I. Taboada , F. Tenholt , S. Ter-Antonyan , A. Terliuk , S. Tilav , L. Tomankova , C. Tönnis , S. Toscano , D. Tosi , M. Tselengidou , C. F. Tung , A. Turcati , R. Turcotte , C. F. Turley , B. Ty , E. Unger , M. A. Unland Elorrieta , M. Usner , J. Vandenbroucke , W. Van Driessche , D. van Eijk , N. van Eijndhoven , S. Vanheule , J. van Santen , M. Vraeghe , C. Walck , A. Wallace , M. Wallraff , N. Wandkowsky , T. B. Watson , C. Weaver , M. J. Weiss , J. Weldert , C. Wendt , J. Werthebach , S. Westerhoff , B. J. Whelan , N. Whitehorn , K. Wiebe , C. H. Wiebusch , L. Wille , D. R. Williams , L. Wills , M. Wolf , J. Wood , T. R. Wood , K. Woschnagg , G. Wrede , D. L. Xu , X. W. Xu , Y. Xu , J. P. Yanez , G. Yodh , S. Yoshida , T. Yuan

Leptohadronic blazar models applied to the 2014-15 flare of TXS 0506+056

We investigate whether the emission of neutrinos observed in 2014-15 from the direction of the blazar TXS 0506+056 can be accommodated with leptohadronic multi-wavelength models of the source commonly adopted for the 2017 flare. While…

High Energy Astrophysical Phenomena · Physics 2019-04-17 Xavier Rodrigues , Shan Gao , Anatoli Fedynitch , Andrea Palladino , Walter Winter

Dissecting the regions around IceCube high-energy neutrinos: growing evidence for the blazar connection

The association of two IceCube detections, the IceCube-170922A event and a neutrino flare, with the blazar TXS0506+056, has paved the way for the multimessenger quest for cosmic accelerators. IceCube has observed many other neutrinos but…

High Energy Astrophysical Phenomena · Physics 2020-07-22 P. Giommi , T. Glauch , P. Padovani , E. Resconi , A. Turcati , Y. L. Chang

Neutrino flares of radio blazars observed from TeV to PeV

Radio blazars have been linked both to individual high-energy neutrino events and to excesses in likelihood sky maps constructed from lower-energy neutrino data. However, the exact mechanism by which neutrinos are produced in these sources…

High Energy Astrophysical Phenomena · Physics 2023-10-17 Alisa Suray , Sergey Troitsky

VLBI Scrutiny of a New Neutrino-Blazar Multiwavelength-Flare Coincidence

In the past years, evidence has started piling up that some high-energy cosmic neutrinos can be associated with blazars in flaring states. On February 26, 2022, a new blazar-neutrino coincidence has been reported: the track-like neutrino…

High Energy Astrophysical Phenomena · Physics 2023-02-27 F. Eppel , M. Kadler , E. Ros , F. Roesch , J. Hessdoerfer , P. Benke , P. G. Edwards , C. M. Fromm , M. Giroletti , A. Gokus , J. L. Gomez , S. Haemmerich , D. Kirchner , Y. Y. Kovalev , T. P. Krichbaum , M. L. Lister , C. Nanci , R. Ojha , G. F. Paraschos , A. Plavin , A. C. S. Readhead , J. Stevens , P. Weber

High Energy Neutrinos from Recent Blazar Flares

The energy density of cosmic neutrinos measured by IceCube matches the one observed by Fermi in extragalactic photons that predominantly originate in blazars. This has inspired attempts to match Fermi sources with IceCube neutrinos. A…

High Energy Astrophysical Phenomena · Physics 2016-11-10 Francis Halzen , Ali Kheirandish

Describing correlated observations of neutrino and gamma ray flares from the blazar TXS 0506+056 with proton blazar model

Recent detection of the neutrino event, IceCube-170922A by IceCube observatory from the Blazar TXS 0506+056 in the state of enhanced gamma ray emission indicates for acceleration of cosmic rays in the blazar jet. The non-detection of the…

High Energy Astrophysical Phenomena · Physics 2019-09-02 Prabir Banik , Arunava Bhadra

$Fermi$-LAT follow-up observations in seven years of real-time high-energy neutrino alerts

The realtime program for high-energy neutrino track events detected by the IceCube South Pole Neutrino Observatory releases alerts to the astronomical community with the goal of identifying electromagnetic counterparts to astrophysical…

High Energy Astrophysical Phenomena · Physics 2024-09-17 S. Garrappa , S. Buson , J. Sinapius , A. Franckowiak , I. Liodakis , C. Bartolini , M. Giroletti , C. Nanci , G. Principe , T. M. Venters

High-energy neutrino flare from cloud-jet interaction in the blazar PKS 0502+049

Following the detection of a $\sim$300 TeV neutrino potentially associated with the flaring blazar TXS 0506+056, an excess of neutrinos around its position in 2014-2015 was revealed by IceCube. However, its contemporaneous quiescence in…

High Energy Astrophysical Phenomena · Physics 2018-08-15 Hao-Ning He , Yoshiyuki Inoue , Susumu Inoue , Yun-Feng Liang

Study of blazars detected by Fermi-LAT as high-energy neutrino sources

Besides the neutrino source detected by IceCube, NGC 1068, the association of the IceCube-170922A neutrino with the blazar in a flaring state among several wavelengths (from radio up to high-energy (HE) gamma-rays), the site and mechanisms…

High Energy Astrophysical Phenomena · Physics 2023-08-29 Antonio Galván , Nissim Fraija , Edilberto Aguilar-Ruiz , Jose Antonio de Diego Onsurbe , Maria G. Dainotti

Analyzing the gamma-ray activity of neutrino emitter candidates: comparing TXS 0506+056 with other blazars

On 22nd of September 2017 the IceCube collaboration sent an alert for an EHE (Extreme High Energy) event, corresponding to the reconstruction of a muonic neutrino (IC-170922A) with energy $\sim 290$ TeV. A multi-wavelength follow-up…

High Energy Astrophysical Phenomena · Physics 2021-08-18 Antonio Marinelli , J. Rodrigo Sacahui , Ankur Sharma , Mabel Osorio-Archila

Association of IceCube neutrinos with radio sources observed at Owens Valley and Mets\"ahovi Radio Observatories

Identifying the most likely sources for high-energy neutrino emission has been one of the main topics in high-energy astrophysics ever since the first observation of high-energy neutrinos by the IceCube Neutrino Observatory. Active galactic…

High Energy Astrophysical Phenomena · Physics 2021-06-16 T. Hovatta , E. Lindfors , S. Kiehlmann , W. Max-Moerbeck , M. Hodges , I. Liodakis , A. Lahteenmaki , T. J. Pearson , A. C. S. Readhead , R. A. Reeves , S. Suutarinen , J. Tammi , M. Tornikoski

$\textit{Fermi}$-LAT realtime follow-ups of high-energy neutrino alerts

The detection of the flaring gamma-ray blazar TXS 0506+056 in spatial and temporal coincidence with the high-energy neutrino IC-170922A represents a milestone for multi-messenger astronomy. The prompt multi-wavelength coverage from several…

High Energy Astrophysical Phenomena · Physics 2021-12-23 S. Garrappa , S. Buson , A. Franckowiak , M. Giroletti , I. Liodakis , C. Nanci

Repeated pattern of $\gamma$-ray flares in the blazar PKS 1502+106 coincident with the IC190730A neutrino event

It has been demonstrated that at least 10 percent of the brightest blazars in the fourth Fermi-LAT catalog of $\gamma$-ray sources exhibit repeating patterns of $\gamma$-ray flares. These events may be associated with the presence of a…

High Energy Astrophysical Phenomena · Physics 2025-02-27 Dmitry Blinov , Polina Novikova

Cosmogenic gamma-ray and neutrino fluxes from blazars associated with IceCube events

Blazars constitute the vast majority of extragalactic $\gamma$-ray sources. They can also contribute a sizable fraction of the diffuse astrophysical neutrinos detected by IceCube. In the past few years, the real-time alert system of IceCube…

High Energy Astrophysical Phenomena · Physics 2022-04-13 Saikat Das , Soebur Razzaque , Nayantara Gupta

Active Galactic Nuclei and the Origin of IceCube's Diffuse Neutrino Flux

The excess of neutrino candidate events detected by IceCube from the direction of TXS 0506+056 has generated a great deal of interest in blazars as sources of high-energy neutrinos. In this study, we analyze the publicly available portion…

High Energy Astrophysical Phenomena · Physics 2019-02-20 Dan Hooper , Tim Linden , Abby Vieregg