All-sky Search for Time-integrated Neutrino Emission from Astrophysical Sources with 7 yr of IceCube Data

Aartsen, M. G.; Abraham, K.; Ackermann, M.; Adams, J.; Aguilar, J. A.; Ahlers, M.; Ahrens, M.; Altmann, D.; Andeen, K.; Anderson, W. G.; Ansseau, I.; Anton, G.; Archinger, M.; Argüelles, C.; Auffenberg, J.; Axani, Spencer; Bai, X.; Barwick, S. W.; Baum, V.; Bay, R.; Beatty, J. J.; Tjus, J. Becker; Becker, K. H.; BenZvi, S.; Berley, D.; Bernardini, E.; Bernhard, A.; Besson, D.; Binder, G.; Bindig, D.; Bissok, M.; Blaufuss, E.; Blot, Summer; Böhm, C.; Börner, M.; Bos, F.; Bose, D.; Böser, S.; Botner, O.; Braun, J.; Brayeur, L.; Bretz, H.-P.; Bron, S.; Burgman, A.; Carver, T.; Casier, M.; Cheung, E.; Chirkin, D.; Christov, A.; Clark, K.; Classen, L.; Coenders, S.; Collin, Gabriel; Conrad, J. M.; Cowen, D. F.; Cross, R.; Day, M.; André, J. P. A. M. de; Clercq, C. De; Rosendo, E. del Pino; Dembinski, H.-P.; Ridder, S. De; Desiati, P.; Vries, Krijn de; Wasseige, G. de; With, M. de; DeYoung, T.; Díaz-Vélez, J. C.; Lorenzo, V. di; Dujmović, Hrvoje; Dumm, J. P.; Dunkman, M.; Eberhardt, B.; Ehrhardt, Thomas; Eichmann, B.; Eller, P.; Euler, S.; Evenson, P. A.; Fahey, S.; Fazely, A. R.; Feintzeig, J.; Felde, J.; Filimonov, K.; Finley, C.; Flis, S.; Fösig, C.-C.; Franckowiak, A.; Friedman, E.; Fuchs, T.; Gaisser, T. K.; Gallagher, John S.; Gerhardt, L.; Ghorbani, K.; Giang, W.; Gladstone, L.; Glauch, Theo; Glüsenkamp, T.; Goldschmidt, A.; Golup, G.; González, J. G.; Grant, D.; Griffith, Z.; Haack, Christian; Ismail, A. Haj; Hallgren, A.; Halzen, F.; Hansen, E.; Hansmann, T.; Hanson, K.; Hebecker, D.; Heereman, D.; Helbing, K.; Hellauer, R.; Hickford, S.; Hignight, J.; Hill, G. C.; Hoffman, K. D.; Hoffmann, R.; Holzapfel, K.; Hoshina, K.; Huang, F.; Huber, Matthías; Hultqvist, K.; In, S.; Ishihara, A.; Jacobi, E.; Japaridze, G. S.; Jeong, Minjin; Jero, K.; Jones, B. J. P.; Jurković, M.; Kappes, A.; Karg, T.; Karle, A.; Katz, U.; Kauer, M.; Keivani, A.; Kelley, J. L.; Kheirandish, Ali; Kim, M.; Kintscher, T.; Kiryluk, J.; Kittler, T.; Klein, S. R.; Kohnen, G.; Koirala, R.; Kolanoski, H.; Konietz, R.; Köpke, L.; Kopper, C.; Kopper, S.; Koskinen, D. J.; Kowalski, M.; Krings, K.; Kroll, M.; Krückl, G.; Krüger, C.; Kunnen, J.; Kunwar, S.; Kurahashi, N.; Kuwabara, T.; Labare, M.; Lanfranchi, J. L.; Larson, M. J.; Lauber, Frederik Hermann; Lennarz, D.; Lesiak-Bzdak, M.; Leuermann, M.; Lu, Lu; Lünemann, J.; Madsen, J.; Maggi, G.; Mahn, Kendall; Mancina, Sarah; Mandelartz, M.; Maruyama, R.; Mase, K.; Maunu, R.; McNally, F.; Meagher, K.; Medici, M.; Meier, Maximilian; Meli, A.; Menne, T.; Merino, G.; Meures, T.; Miarecki, S.; Mohrmann, L.; Montaruli, T.; Moulai, Marjon; Nahnhauer, R.; Naumann, Uwe; Neer, G.; Niederhausen, H.; Nowicki, S. C.; Nygren, D. R.; Pollmann, A. Obertacke; Olivas, A.; O’Murchadha, A.; Palczewski, T.; Pandya, Hershal; Pankova, D. V.; Peiffer, P.; Penek, Ö.; Pepper, J. A.; Heros, C. Pérez de los; Pieloth, D.; Pinat, E.; Price, P. B.; Przybylski, G. T.; Quinnan, M.; Raab, Christoph; Rädel, L.; Rameez, M.; Rawlins, K.; Reimann, R.; Relethford, B.; Relich, M.; Resconi, E.; Rhode, W.; Richman, M.; Riedel, Benedikt; Robertson, Sally; Rongen, Martin; Rott, C.; Ruhe, T.; Ryckbosch, D.; Rysewyk, D.; Sabbatini, L.; Herrera, S. E. Sanchez; Sandrock, A.; Sandroos, J.; Sarkar, S.; Satalecka, K.; Schlunder, P.; Schmidt, T.; Schoenen, S.; Schöneberg, S.; Schumacher, Lisa Johanna; Seckel, D.; Seunarine, S.; Soldin, D.; Song, M.; Spiczak, G. M.; Spiering, C.; Stanev, T.; Stasik, A.; Stettner, J.; Steuer, A.; Stezelberger, T.; Stokstad, R. G.; Stößl, A.; Strom, Lars Rickard; Strotjohann, N. L.; Sullivan, G. W.; Sutherland, M.; Taavola, H.; Taboada, I.; Tatar, J.; Tenholt, F.; Ter–Antonyan, S.; Terliuk, A.; Tešić, G.; Tilav, S.; Toale, P. A.; Tobin, M. N.; Toscano, S.; Tosi, D.; Tselengidou, M.; Turcati, A.; Unger, E.; Usner, M.; Vandenbroucke, J.; Eijndhoven, N. van; Vanheule, S.; Rossem, M. van; Santen, J. V.; Veenkamp, J.; Vehring, M.; Vöge, M.; Vogel, E.; Vraeghe, M.; Walck, C.; Wallace, A.; Wallraff, M.; Wandkowsky, N.; Weaver, Ch.; Weiss, Matthew J.; Wendt, C.; Westerhoff, S.; Whelan, B. J.; Wickmann, S.; Wiebe, K.; Wiebusch, C. H.; Wille, L.; Williams, D. R.; Wills, L.; Wolf, M.; Wood, T. R.; Woolsey, E.; Woschnagg, K.; Xu, D. L.; Xu, X. W.; Xu, Y.; Yañez, J. P.; Yodh, G.; Yoshida, Shigeru; Zoll, M.

doi:10.3847/1538-4357/835/2/151

Cited by 286 publications

(432 citation statements)

References 60 publications

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“…Results are consistent with background and stringent upper limits on steady astrophysical point source flux are set on the level of E 2 ν dΦ dE ν ∼ 10 −12 TeV cm −2 s −1 (Fig. 4) [12]. Other searches correlate neutrinos to a same category of sources use a stacked maximum likelihood method to probe the scenario of distributed weak sources.…”

Section: Hotspot Populationsupporting

confidence: 49%

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Exploring the Universe with Neutrinos: Recent Results from IceCube

2017

Nuclear and Particle Physics Proceedings

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In 2013, the IceCube Neutrino Observatory located at the geographic South Pole detected evidence for a diffuse astrophysical neutrino flux above ∼60 TeV. To this day, IceCube has operated with full detector configuration for more than 6 years. The observed astrophysical neutrino flux has been confirmed with > 6σ significance with both events starting within the detector (all flavor) and events traversing through the Earth (ν µ charged-current). Somewhat equal flavor ratio of astrophysical neutrinos is expected at Earth assuming standard thorough oscillation. A search for tau neutrinos has been carried out but yielded null result. No neutrino sources have been found to contribute significantly to the diffuse flux at this point. In this paper, we will review the current status of the astrophysical neutrino flux, discuss the quest for neutrino point sources and overview the proposed design and physics potentials of the future IceCube-Gen2.

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Section: Hotspot Populationsupporting

confidence: 49%

“…Right: sensitivity (dashed red) at 90% C.L., 5σ discovery potential (solid red) and 90% C.L. upper limit (blue) assuming a ν µ +ν µ unbroken E −2 energy spectrum [12].…”

Section: Hotspot Populationmentioning

confidence: 99%

Exploring the Universe with Neutrinos: Recent Results from IceCube

2017

Nuclear and Particle Physics Proceedings

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“…In addition to the search for excesses in the direction of the IceCube track events, we separately searched for coincidence events with the IceCube multiplet event reported in Aartsen et al (2017). On 2016 February 17, IceCube observed three neutrino candidate events within less than 100 s separated by 3.6°.…”

Section: Searching For a Coincidence With The Icecube Multiplet Eventmentioning

confidence: 99%

“…There has not yet been any significant evidence to suggest that these neutrinos are pointing to a particular region of the sky. The many searches for counterparts to the neutrino signal have been largely unsuccessful, including searches for coincidences with photons from Fermi-LAT (Peng & Wang 2017), fast radio bursts (Fahey et al 2016), as well as a search for coincidences with a large catalog of candidate sources (Aartsen et al 2017). One search (Kadler et al 2016) found a coincidence between a PeV neutrino detected in IceCube and an outburst of the blazar PKS B1424418, giving a hint at a possible origin of these astrophysical neutrinos.…”

Section: Introductionmentioning

confidence: 99%

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Search for an Excess of Events in the Super-Kamiokande Detector in the Directions of the Astrophysical Neutrinos Reported by the IceCube Collaboration

Abe¹,

Bronner²,

Pronost³

et al. 2017

ApJ

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We present the results of a search in the Super-Kamiokande (SK) detector for excesses of neutrinos with energies above a few GeV that are in the direction of the track events reported in IceCube. Data from all SK phases (SK-I through SK-IV) were used, spanning a period from 1996 April to 2016 April and corresponding to an exposure of 225 kiloton-years. We considered the 14 IceCube track events from a data set with 1347 livetime days taken from 2010 to 2014. We use Poisson counting to determine if there is an excess of neutrinos detected in SK in a 10°s earch cone (5°for the highest energy data set) around the reconstructed direction of the IceCube event. No significant excess was found in any of the search directions we examined. We also looked for coincidences with a recently reported IceCube multiplet event. No events were detected within a±500 s time window around the first detected event, and no significant excess was seen from that direction over the lifetime of SK.

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η Carinae: Particle acceleration and multimessenger aspects

Walter

Balbo

2019

Astron Nachr

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Carinae is composed of two very massive stars orbiting each other in 5.5 years. The primary star features the densest known stellar wind, colliding with that expelled by its companion. The wind collision region dissipates energy and accelerates particles up to relativistic energies, producing nonthermal X-ray and -ray emission detected by Beppo-SAX, INTEGRAL, Swift, Suzaku, Agile, Fermi, and H.E.S.S. The orbital variability of the system provides key diagnosis of the physics involved and of the emission mechanisms. The low-energy component, which cuts off below 10 GeV and varies by a factor <2 along the orbit, is likely of the inverse Compton origin. The high-energy component varies by larger factors and differently during the two periastrons observed by Fermi. These variations match the predictions of simulations assuming a magnetic field in the range 0.4-1 kG at the surface of the primary star. The high-energy component and the thermal X-ray emission were weaker than expected around the 2014 periastron suggesting a modification of the inner wind density. Diffuse shock acceleration in the complex geometry of the wind collision zone provides a convincing match to the observations and new diagnostic tools to probe the geometry and energetics of the system. A future instrument sensitive in the MeV energy range could discriminate between lepto-hadronic and hadronic models for the gamma-ray emission. At higher energies, the Cherenkov Telescope Array will distinguish orbital modulations of the high-energy component from those of ultraviolet-TeV photoabsorption providing a wealth of information constraining acceleration physics under more extreme conditions than found in supernova remnants (SNR).

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All-sky Search for Time-integrated Neutrino Emission from Astrophysical Sources with 7 yr of IceCube Data

Cited by 286 publications

References 60 publications

Exploring the Universe with Neutrinos: Recent Results from IceCube

Exploring the Universe with Neutrinos: Recent Results from IceCube

Search for an Excess of Events in the Super-Kamiokande Detector in the Directions of the Astrophysical Neutrinos Reported by the IceCube Collaboration

η Carinae: Particle acceleration and multimessenger aspects

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