Related papers: Testing secret interaction with astrophysical neut…

Can the neutrinos from TXS 0506+056 have a coronal origin?

The blazar TXS 0506+056 has been the first astrophysical source associated with high-energy astrophysical neutrinos, and it has emerged as the second-most-prominent hotspot in the neutrino sky over ten years of observations. Although…

High Energy Astrophysical Phenomena · Physics 2025-06-03 Damiano F. G. Fiorillo , Federico Testagrossa , Maria Petropoulou , Walter Winter

Modelling the coincident observation of a high-energy neutrino and a bright blazar flare

In September 2017, the IceCube Neutrino Observatory recorded a very-high-energy neutrino in directional coincidence with a blazar in an unusually bright gamma-ray state, TXS0506+056. Blazars are prominent photon sources in the universe…

High Energy Astrophysical Phenomena · Physics 2019-05-14 Shan Gao , Anatoli Fedynitch , Walter Winter , Martin Pohl

Latest results from the IceCube Neutrino Observatory

The IceCube Neutrino Observatory has opened a new window into the high-energy Universe, providing measurements of neutrinos over a broad energy range. This contribution presents recent results, including a follow-up on the first…

High Energy Astrophysical Phenomena · Physics 2026-04-21 Thijs Juan van Eeden

A Search for AGN sources of the IceCube Diffuse Neutrino Flux

The origin of the diffuse astrophysical neutrino flux measured by the IceCube Observatory remains largely unknown. Although NGC 1068 and TXS 0506+056 have been identified as potential neutrino sources, the diffuse flux of neutrinos must…

High Energy Astrophysical Phenomena · Physics 2024-04-16 K. McDonough , K. Hughes , D. Smith , A. G. Vieregg

Berezinsky Hidden Sources: An Emergent Tension in the High-Energy Neutrino Sky?

The IceCube Collaboration has recently reported compelling evidence of high-energy neutrino emission from NGC~1068, and also mild excesses for NGC 4151 and CGCG420-015, local Seyfert galaxies. This has increased the interest along neutrino…

High Energy Astrophysical Phenomena · Physics 2024-06-21 Antonio Ambrosone

All-sky neutrino point-source search with IceCube combined track and cascade data

Despite extensive efforts, discovery of high-energy astrophysical neutrino sources remains elusive. We present an event-level simultaneous maximum likelihood analysis of tracks and cascades using IceCube data collected from 04/06/2008 to…

High Energy Astrophysical Phenomena · Physics 2026-01-21 R. Abbasi , M. Ackermann , J. Adams , S. K. Agarwalla , J. A. Aguilar , M. Ahlers , J. M. Alameddine , S. Ali , N. M. Amin , K. Andeen , C. Argüelles , Y. Ashida , S. Athanasiadou , S. N. Axani , R. Babu , X. Bai , J. Baines-Holmes , A. Balagopal V. , S. W. Barwick , S. Bash , V. Basu , R. Bay , J. J. Beatty , J. Becker Tjus , P. Behrens , J. Beise , C. Bellenghi , B. Benkel , S. BenZvi , D. Berley , E. Bernardini , D. Z. Besson , E. Blaufuss , L. Bloom , S. Blot , I. Bodo , F. Bontempo , J. Y. Book Motzkin , C. Boscolo Meneguolo , S. Böser , O. Botner , J. Böttcher , J. Braun , B. Brinson , Z. Brisson-Tsavoussis , R. T. Burley , D. Butterfield , M. A. Campana , K. Carloni , J. Carpio , S. Chattopadhyay , N. Chau , Z. Chen , D. Chirkin , S. Choi , B. A. Clark , A. Coleman , P. Coleman , G. H. Collin , D. A. Coloma Borja , A. Connolly , J. M. Conrad , R. Corley , D. F. Cowen , C. De Clercq , J. J. DeLaunay , D. Delgado , T. Delmeulle , S. Deng , P. Desiati , K. D. de Vries , G. de Wasseige , T. DeYoung , J. C. Díaz-Vélez , S. DiKerby , M. Dittmer , A. Domi , L. Draper , L. Dueser , D. Durnford , K. Dutta , M. A. DuVernois , T. Ehrhardt , L. Eidenschink , A. Eimer , P. Eller , E. Ellinger , D. Elsässer , R. Engel , H. Erpenbeck , W. Esmail , S. Eulig , J. Evans , P. A. Evenson , K. L. Fan , K. Fang , K. Farrag , A. R. Fazely , A. Fedynitch , N. Feigl , C. Finley , L. Fischer , D. Fox , A. Franckowiak , S. Fukami , P. Fürst , J. Gallagher , E. Ganster , A. Garcia , M. Garcia , G. Garg , E. Genton , L. Gerhardt , A. Ghadimi , C. Glaser , T. Glüsenkamp , J. G. Gonzalez , S. Goswami , A. Granados , D. Grant , S. J. Gray , S. Griffin , S. Griswold , K. M. Groth , D. Guevel , C. Günther , P. Gutjahr , C. Ha , C. Haack , A. Hallgren , L. Halve , F. Halzen , L. Hamacher , M. Ha Minh , M. Handt , K. Hanson , J. Hardin , A. A. Harnisch , P. Hatch , A. Haungs , J. Häußler , K. Helbing , J. Hellrung , B. Henke , L. Hennig , F. Henningsen , L. Heuermann , R. Hewett , N. Heyer , S. Hickford , A. Hidvegi , C. Hill , G. C. Hill , R. Hmaid , K. D. Hoffman , D. Hooper , S. Hori , K. Hoshina , M. Hostert , W. Hou , T. Huber , K. Hultqvist , K. Hymon , A. Ishihara , W. Iwakiri , M. Jacquart , S. Jain , O. Janik , M. Jansson , M. Jeong , M. Jin , N. Kamp , D. Kang , W. Kang , X. Kang , A. Kappes , L. Kardum , T. Karg , M. Karl , A. Karle , A. Katil , M. Kauer , J. L. Kelley , M. Khanal , A. Khatee Zathul , A. Kheirandish , H. Kimku , J. Kiryluk , C. Klein , S. R. Klein , Y. Kobayashi , A. Kochocki , R. Koirala , H. Kolanoski , T. Kontrimas , L. Köpke , C. Kopper , D. J. Koskinen , P. Koundal , M. Kowalski , T. Kozynets , N. Krieger , J. Krishnamoorthi , T. Krishnan , K. Kruiswijk , E. Krupczak , A. Kumar , E. Kun , N. Kurahashi , N. Lad , C. Lagunas Gualda , L. Lallement Arnaud , M. Lamoureux , M. J. Larson , F. Lauber , J. P. Lazar , K. Leonard DeHolton , A. Leszczyńska , J. Liao , C. Lin , Y. T. Liu , M. Liubarska , C. Love , L. Lu , F. Lucarelli , W. Luszczak , Y. Lyu , J. Madsen , E. Magnus , Y. Makino , E. Manao , S. Mancina , A. Mand , I. C. Mariş , S. Marka , Z. Marka , L. Marten , I. Martinez-Soler , R. Maruyama , J. Mauro , F. Mayhew , F. McNally , J. V. Mead , K. Meagher , S. Mechbal , A. Medina , M. Meier , Y. Merckx , L. Merten , J. Mitchell , L. Molchany , T. Montaruli , R. W. Moore , Y. Morii , A. Mosbrugger , M. Moulai , D. Mousadi , E. Moyaux , T. Mukherjee , R. Naab , M. Nakos , U. Naumann , J. Necker , L. Neste , M. Neumann , H. Niederhausen , M. U. Nisa , K. Noda , A. Noell , A. Novikov , A. Obertacke Pollmann , V. O'Dell , A. Olivas , R. Orsoe , J. Osborn , E. O'Sullivan , V. Palusova , H. Pandya , A. Parenti , N. Park , V. Parrish , E. N. Paudel , L. Paul , C. Pérez de los Heros , T. Pernice , J. Peterson , M. Plum , A. Pontén , V. Poojyam , Y. Popovych , M. Prado Rodriguez , B. Pries , R. Procter-Murphy , G. T. Przybylski , L. Pyras , C. Raab , J. Rack-Helleis , N. Rad , M. Ravn , K. Rawlins , Z. Rechav , A. Rehman , I. Reistroffer , E. Resconi , S. Reusch , C. D. Rho , W. Rhode , L. Ricca , B. Riedel , A. Rifaie , E. J. Roberts , S. Robertson , M. Rongen , A. Rosted , C. Rott , T. Ruhe , L. Ruohan , D. Ryckbosch , J. Saffer , D. Salazar-Gallegos , P. Sampathkumar , A. Sandrock , G. Sanger-Johnson , M. Santander , S. Sarkar , J. Savelberg , M. Scarnera , P. Schaile , M. Schaufel , H. Schieler , S. Schindler , L. Schlickmann , B. Schlüter , F. Schlüter , N. Schmeisser , T. Schmidt , F. G. Schröder , L. Schumacher , S. Schwirn , S. Sclafani , D. Seckel , L. Seen , M. Seikh , S. Seunarine , P. A. Sevle Myhr , R. Shah , S. Shefali , N. Shimizu , B. Skrzypek , R. Snihur , J. Soedingrekso , A. Søgaard , D. Soldin , P. Soldin , G. Sommani , C. Spannfellner , G. M. Spiczak , C. Spiering , J. Stachurska , M. Stamatikos , T. Stanev , T. Stezelberger , T. Stürwald , T. Stuttard , G. W. Sullivan , I. Taboada , S. Ter-Antonyan , A. Terliuk , A. Thakuri , M. Thiesmeyer , W. G. Thompson , J. Thwaites , S. Tilav , K. Tollefson , S. Toscano , D. Tosi , A. Trettin , A. K. Upadhyay , K. Upshaw , A. Vaidyanathan , N. Valtonen-Mattila , J. Valverde , J. Vandenbroucke , T. Van Eeden , N. van Eijndhoven , L. Van Rootselaar , J. van Santen , J. Vara , F. Varsi , M. Venugopal , M. Vereecken , S. Vergara Carrasco , S. Verpoest , D. Veske , A. Vijai , J. Villarreal , C. Walck , A. Wang , E. H. S. Warrick , C. Weaver , P. Weigel , A. Weindl , J. Weldert , A. Y. Wen , C. Wendt , J. Werthebach , M. Weyrauch , N. Whitehorn , C. H. Wiebusch , D. R. Williams , L. Witthaus , M. Wolf , G. Wrede , X. W. Xu , J. P. Yanez , Y. Yao , E. Yildizci , S. Yoshida , R. Young , F. Yu , S. Yu , T. Yuan , A. Zegarelli , S. Zhang , Z. Zhang , P. Zhelnin , P. Zilberman

Searching for a Galactic component in the IceCube track-like neutrino events

Searches for spatial associations between high-energy neutrinos observed at the IceCube Neutrino Observatory and known astronomical objects may hold the key to establishing the neutrinos' origins and the origins of hadronic cosmic rays.…

High Energy Astrophysical Phenomena · Physics 2021-08-05 Gregory S. Vance , Kimberly L. Emig , Cecilia Lunardini , Rogier A. Windhorst

Neutrinos from extreme astrophysical sources

In this paper I review recent results on high-energy neutrino astronomy and what they can reveal about some of the most extreme cosmic accelerators. I discuss recent measurements of the diffuse TeV-PeV cosmic neutrino spectrum by the…

High Energy Astrophysical Phenomena · Physics 2026-03-12 Xavier Rodrigues

Deciphering the Sources of Cosmic Neutrinos

More than a decade ago, the IceCube Neutrino Observatory discovered a diffuse flux of 10 TeV-10 PeV neutrinos from our Universe. This flux of unknown origin most likely emanates from an extragalactic population of neutrino sources, which…

High Energy Astrophysical Phenomena · Physics 2025-06-03 Kathrine Mørch Groth , Markus Ahlers

Dissecting the region around IceCube-170922A: the blazar TXS 0506+056 as the first cosmic neutrino source

We present the dissection in space, time, and energy of the region around the IceCube-170922A neutrino alert. This study is motivated by: (1) the first association between a neutrino alert and a blazar in a flaring state, TXS 0506+056; (2)…

High Energy Astrophysical Phenomena · Physics 2018-07-13 P. Padovani , P. Giommi , E. Resconi , T. Glauch , B. Arsioli , N. Sahakyan , M. Huber

Constraints on Neutrino Emission from Nearby Galaxies Using the 2MASS Redshift Survey and IceCube

The distribution of galaxies within the local universe is characterized by anisotropic features. Observatories searching for the production sites of astrophysical neutrinos can take advantage of these features to establish directional…

High Energy Astrophysical Phenomena · Physics 2020-07-20 IceCube Collaboration , 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. Balagopal V. , A. Barbano , S. W. Barwick , B. Bastian , V. Baum , S. Baur , 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 , S. Böser , O. Botner , J. Böttcher , E. Bourbeau , J. Bourbeau , F. Bradascio , J. Braun , S. Bron , J. Brostean-Kaiser , A. Burgman , J. Buscher , R. S. Busse , T. Carver , C. Chen , E. Cheung , D. Chirkin , S. Choi , K. Clark , L. Classen , A. Coleman , G. H. Collin , J. M. Conrad , P. Coppin , P. Correa , D. F. Cowen , R. Cross , P. Dave , 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 , R. Engel , P. A. Evenson , S. Fahey , A. R. Fazely , J. Felde , K. Filimonov , C. Finley , D. Fox , 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 , S. Griswold , M. Günder , M. Gündüz , C. Haack , A. Hallgren , R. Halliday , L. Halve , F. Halzen , K. Hanson , A. Haungs , D. Hebecker , D. Heereman , P. Heix , 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 , T. Huber , K. Hultqvist , M. Hünnefeld , R. Hussain , S. In , N. Iovine , A. Ishihara , G. S. Japaridze , M. Jeong , K. Jero , B. J. P. Jones , F. Jonske , R. Joppe , D. Kang , W. Kang , A. Kappes , D. Kappesser , T. Karg , M. Karl , A. Karle , U. Katz , M. Kauer , 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 , N. Kurahashi , A. Kyriacou , J. L. Lanfranchi , M. J. Larson , F. Lauber , J. P. Lazar , K. Leonard , A. Leszczyńska , M. Leuermann , Q. R. Liu , E. Lohfink , C. J. Lozano Mariscal , L. Lu , F. Lucarelli , J. Lünemann , W. Luszczak , Y. Lyu , W. Y. Ma , J. Madsen , G. Maggi , K. B. M. Mahn , Y. Makino , P. Mallik , K. Mallot , S. Mancina , I. C. Mariş , R. Maruyama , K. Mase , R. Maunu , F. McNally , K. Meagher , M. Medici , A. Medina , M. Meier , S. Meighen-Berger , G. Merino , T. Meures , J. Micallef , D. Mockler , G. Momenté , T. Montaruli , R. W. Moore , R. Morse , M. Moulai , P. Muth , R. Nagai , U. Naumann , G. Neer , H. Niederhausen , M. U. Nisa , S. C. Nowicki , D. R. Nygren , A. Obertacke Pollmann , M. Oehler , A. Olivas , A. O'Murchadha , E. O'Sullivan , T. Palczewski , H. Pandya , D. V. Pankova , N. Park , P. Peiffer , C. Pérez de los Heros , S. Philippen , D. Pieloth , E. Pinat , A. Pizzuto , M. Plum , A. Porcelli , P. B. Price , G. T. Przybylski , C. Raab , A. Raissi , M. Rameez , L. Rauch , K. Rawlins , I. C. Rea , R. Reimann , B. Relethford , M. Renschler , 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 , H. Schieler , P. Schlunder , T. Schmidt , A. Schneider , J. Schneider , F. G. Schröder , L. Schumacher , S. Sclafani , D. Seckel , S. Seunarine , S. Shefali , M. Silva , R. Snihur , J. Soedingrekso , D. Soldin , M. Song , G. M. Spiczak , C. Spiering , J. Stachurska , M. Stamatikos , T. Stanev , R. Stein , J. Stettner , A. Steuer , T. Stezelberger , R. G. Stokstad , A. Stößl , N. L. Strotjohann , T. Stürwald , T. Stuttard , G. W. Sullivan , I. Taboada , F. Tenholt , S. Ter-Antonyan , A. Terliuk , S. Tilav , K. Tollefson , L. Tomankova , C. Tönnis , S. Toscano , D. Tosi , A. Trettin , 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 , J. van Santen , S. Verpoest , M. Vraeghe , C. Walck , A. Wallace , M. Wallraff , N. Wandkowsky , T. B. Watson , C. Weaver , A. Weindl , M. J. Weiss , J. Weldert , C. Wendt , J. Werthebach , 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 , M. Zöcklein

IceCube: Neutrinos from Active Galaxies

The IceCube project transformed a cubic kilometer of transparent, natural Antarctic ice into a Cherenkov detector. It discovered neutrinos of TeV-PeV energy originating beyond our Galaxy with an energy flux that exceeds the one of…

High Energy Astrophysical Phenomena · Physics 2023-05-15 Francis Halzen

Evaluating the Contribution of Active Galactic Nuclei to the Diffuse High-Energy Neutrino Flux

The detection of high-energy neutrinos from NGC 1068 and TXS-0506+56 suggests that active galactic nuclei (AGN) may contribute significantly to the the diffuse neutrino flux measured by IceCube. Using 10 years of publicly available IceCube…

High Energy Astrophysical Phenomena · Physics 2026-02-03 Samyak Jain , Dan Hooper , Francis Halzen

Multi-Messenger High-Energy Results

Multi-messenger high-energy astrophysics has currently achieved the potential to unravel the origin of cosmic rays and how sources accelerate them, their relation to the diffuse radiation in the extra-galactic space, and their role to forge…

High Energy Astrophysical Phenomena · Physics 2023-01-18 Teresa Montaruli

Bounds on secret neutrino interactions from high-energy astrophysical neutrinos

Neutrinos offer a window to physics beyond the Standard Model. In particular, high-energy astrophysical neutrinos, with TeV-PeV energies, may provide evidence of new, "secret" neutrino-neutrino interactions that are stronger than ordinary…

High Energy Astrophysical Phenomena · Physics 2020-06-23 Mauricio Bustamante , Charlotte Amalie Rosenstroem , Shashank Shalgar , Irene Tamborra

Probing Secret Interactions of Astrophysical Neutrinos in the High-Statistics Era

Do neutrinos have sizable self-interactions? They might. Laboratory constraints are weak, so strong effects are possible in astrophysical environments and the early universe. Observations with neutrino telescopes can provide an independent…

High Energy Physics - Phenomenology · Physics 2021-12-07 Ivan Esteban , Sujata Pandey , Vedran Brdar , John F. Beacom

Contribution of Secondary Neutrinos from Line-of-sight Cosmic Ray Interactions to the IceCube Diffuse Astrophysical Flux

In ten years of observations, the IceCube neutrino observatory has revealed a neutrino sky in tension with previous expectations for neutrino point source emissions. Astrophysical objects associated with hadronic processes might act as…

High Energy Astrophysical Phenomena · Physics 2021-06-24 Alina Kochocki , Volodymyr Takhistov , Alexander Kusenko , Nathan Whitehorn

Correlation of IceCube neutrinos with the 2MASS Redshift Survey

Since the detection of high energy astrophysical neutrinos in IceCube, there has been a search for their sources. Although recent evidence of neutrinos from a flaring blazar could explain some of the neutrino flux, sources for the remainder…

High Energy Astrophysical Phenomena · Physics 2019-08-15 Stephen Sclafani , Naoko Kurahashi Neilson

A test of the hadronic origin of $\gamma$-rays from blazars with up to month-later follow-up of IceCube Alerts with Imaging Air Cherenkov Telescopes

The sources of IceCube neutrinos are as yet unknown. The multi-messenger observation of their emission in $\gamma$-rays can be a guide to their identification, as exemplified by the case of TXS 0506+056. We suggest a new method of searching…

High Energy Astrophysical Phenomena · Physics 2021-09-01 Damiano F. G. Fiorillo , Konstancja Satalecka , Ignacio Taboada , Chun Fai Tung

Searching for Time-Dependent Neutrino Emission from Blazars with IceCube

In 2017, IceCube detected a high energy neutrino in coincidence with the blazar TXS 0506+056. In a follow up analysis of archival data, evidence for previous neutrino emission from the blazar during 2014-15 was found. In this analysis, we…

High Energy Astrophysical Phenomena · Physics 2019-08-16 Erin O'Sullivan , Chad Finley