| Title: |
Investigation of Two Fermi -LAT Gamma-Ray Blazars Coincident with High-energy Neutrinos Detected by IceCube |
| Authors: |
Garrappa, S.; Buson, S.; Thompson, T. A.; Gerhardt, L.; Ghorbani, K.; Glauch, T.; Glüsenkamp, T.; Goldschmidt, A.; Gonzalez, J. G.; Grant, D.; Griffith, Z.; Gündüz, M.; Haack, C.; Aartsen, M. G.; Hallgren, A.; Halve, L.; Halzen, F.; Hanson, K.; Hebecker, D.; Heereman, D.; Helbing, K.; Hellauer, R.; Henningsen, F.; Hickford, S.; Ackermann, Markus; Hignight, J.; Hill, G. C.; Hoffman, K. D.; Hoffmann, R.; Hoinka, T.; Hokanson-Fasig, B.; Hoshina, K.; Huang, F.; Huber, M.; Hultqvist, K.; Adams, J.; Hünnefeld, M.; Hussain, R.; In, S.; Iovine, N.; Ishihara, A.; Jacobi, Emanuel; Japaridze, G. S.; Jeong, M.; Jero, K.; Jones, B. J. P.; Aguilar, J. A.; Kalaczynski, P.; Kang, W.; Kappes, A.; Kappesser, D.; Karg, T.; Karl, M.; Karle, A.; Katz, U.; Kauer, M.; Keivani, A.; Ahlers, M.; Kelley, J. L.; Kheirandish, A.; Kim, J.; Kintscher, T.; Kiryluk, J.; Kittler, T.; Klein, S. R.; Koirala, R.; Kolanoski, H.; Köpke, L.; Ahrens, M.; Kopper, C.; Kopper, S.; Koskinen, D. J.; Kowalski, Marek; Krings, K.; Krückl, G.; Kulacz, N.; Kunwar, Samridha; Kurahashi, N.; Kyriacou, A.; Alispach, C.; Labare, M.; Lanfranchi, J. L.; Larson, M. J.; Lauber, F.; Lazar, J. P.; Leonard, K.; Leuermann, M.; Liu, Q. R.; Lohfink, E.; Lozano Mariscal, C. J.; Altmann, D.; Lu, L.; Lucarelli, F.; Lünemann, J.; Luszczak, W.; Madsen, J.; Maggi, G.; Mahn, K. B. M.; Makino, Y.; Mallot, K.; Mancina, S.; Andeen, K.; Mariş, I. C.; Maruyama, R.; Mase, K.; Maunu, R.; Meagher, K.; Medici, M.; Medina, A.; Meier, M.; Meighen-Berger, S.; Menne, T.; Franckowiak, A.; Anderson, T.; Merino, G.; Meures, T.; Miarecki, S.; Micallef, J.; Momenté, G.; Montaruli, T.; Moore, R. W.; Moulai, M.; Nagai, R.; Nahnhauer, R.; Ansseau, I.; Nakarmi, P.; Naumann, U.; Neer, G.; Niederhausen, H.; Nowicki, S. C.; Nygren, D. R.; Obertacke Pollmann, A.; Olivas, A.; O'Murchadha, A.; O'Sullivan, E.; Anton, G.; Palczewski, T.; Pandya, H.; Pankova, D. V.; Park, N.; Peiffer, P.; Pérez de los Heros, C.; Pieloth, D.; Pinat, E.; Pizzuto, A.; Plum, M.; Argüelles, C.; Price, P. B.; Przybylski, G. T.; Raab, C.; Raissi, A.; Rameez, M.; Rauch, Franz Ludwig; Rawlins, K.; Rea, I. C.; Reimann, R.; Relethford, B.; Auffenberg, J.; Renzi, G.; Resconi, E.; Rhode, W.; Richman, M.; Robertson, S.; Rongen, M.; Rott, C.; Ruhe, T.; Ryckbosch, D.; Rysewyk, D.; Axani, S.; Safa, I.; Sanchez Herrera, S. E.; Sandrock, A.; Sandroos, J.; Santander, M.; Sarkar, S.; Satalecka, K.; Schaufel, M.; Schlunder, P.; Backes, P.; Schmidt, T.; Schneider, A.; Schneider, J.; Schumacher, L.; Sclafani, S.; Seckel, D.; Seunarine, S.; Silva, M.; Snihur, R.; Soedingrekso, J.; Bagherpour, H.; Soldin, D.; Song, M.; Spiczak, G. M.; Spiering, C.; Stachurska, J.; Stamatikos, M.; Stanev, T.; Stasik, A.; Stein, Robert; Stettner, J.; Bai, X.; Steuer, A.; Stezelberger, T.; Stokstad, R. G.; Stöß l, A.; Strotjohann, N. L.; Stuttard, T.; Sullivan, G. W.; Sutherland, M.; Taboada, I.; Tenholt, F.; Barbano, A.; Ter-Antonyan, S.; Terliuk, Andrii; Tilav, S.; Tomankova, L.; Tönnis, C.; Toscano, S.; Tosi, D.; Tselengidou, M.; Tung, C. F.; Turcati, A.; Shappee, B. J.; Barwick, S. W.; Turcotte, R.; Turley, C. F.; Ty, B.; Unger, E.; Unland Elorrieta, M. A.; Usner, M.; Vandenbroucke, J.; Van Driessche, W.; van Eijk, D.; van Eijndhoven, N.; Baum, V.; Vanheule, S.; van Santen, J.; Vraeghe, M.; Walck, C.; Wallace, A.; Wallraff, M.; Wandkowsky, N.; Watson, T. B.; Weaver, C.; Weiss, M. J.; Bay, R.; Weldert, J.; Wendt, C.; Werthebach, J.; Westerhoff, S.; Whelan, B. J.; Whitehorn, N.; Wiebe, K.; Wiebusch, C. H.; Wille, L.; Williams, D. R.; Beatty, J. J.; Wills, L.; Wolf, M.; Wood, J.; Wood, T. R.; Woschnagg, K.; Wrede, G.; Xu, D. L.; Xu, X. W.; Xu, Y.; Yanez, J. P.; Becker, K.-H.; Yodh, G.; Yoshida, S.; Yuan, T.; Fermi-LAT Collaboration; ASAS-SN Collaboration; IceCube Collaboration; Becker Tjus, J.; BenZvi, S.; Berley, D.; Bernardini, E.; Besson, D. Z.; Beacom, J. F.; Binder, G.; Bindig, D.; Blaufuss, E.; Blot, S.; Bohm, C.; Börner, M.; Böser, S.; Botner, O.; Bourbeau, E.; Bourbeau, J.; Dong, S.; Bradascio, F.; Braun, J.; Bretz, H.-P.; Bron, S.; Brostean-Kaiser, J.; Burgman, A.; Busse, R. S.; Carver, T.; Chen, C.; Cheung, E.; Holoien, T. W.-S.; Chirkin, D.; Clark, K.; Classen, L.; Collin, G. H.; Conrad, J. M.; Coppin, P.; Correa, P.; Cowen, D. F.; Cross, R.; Dave, P.; Kochanek, C. S.; de André, J. P. A. M.; De Clercq, C.; DeLaunay, J. J.; Dembinski, H.; Deoskar, K.; De Ridder, S.; Desiati, P.; de Vries, K. D.; de Wasseige, G.; de With, M.; Prieto, J. L.; DeYoung, T.; Dí az-Vélez, J. C.; Dujmovic, H.; Dunkman, M.; Dvorak, E.; Eberhardt, B.; Ehrhardt, T.; Eller, P.; Evenson, P. A.; Fahey, S.; Stanek, K. Z.; Fazely, A. R.; Felde, J.; Filimonov, K.; Finley, C.; Friedman, E.; Fritz, A.; Gaisser, T. K.; Gallagher, J.; Ganster, E. |
| Source: |
The astrophysical journal / 1 880(2), 103 - (2019). doi:10.3847/1538-4357/ab2ada |
| Publisher Information: |
Institute of Physics Publ. |
| Publication Year: |
2019 |
| Collection: |
DESY Publication Database (PUBDB) |
| Subject Terms: |
info:eu-repo/classification/ddc/520 |
| Subject Geographic: |
DE |
| Description: |
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. We find one additional known gamma-ray source, the blazar GB6J1040+0617, in spatial coincidence with a neutrino in this sample. The chance probability of this coincidence is 30% after trial correction. For the first time, we present a systematic study of the gamma-ray flux, spectral and optical variability, and multiwavelength behavior of GB6 J1040+0617 and compare it to TXS 0506+056. We find that TXS 0506+056 shows strong flux variability in the Fermi-Large Area Telescope gamma-ray band, being in an active state around the arrival of IceCube-170922A, but in a low state during the archival IceCube neutrino flare in 2014/15. In both cases the spectral shape is statistically compatible („2σ) with the average spectrum showing no indication of a significant relative increase of a high-energy component. While the association of GB6 J1040+0617 with the neutrino is consistent with background expectations, the source appears to be a plausible neutrino source candidate based on its energetics and multiwavelength features, namely a bright optical flare and modestly increased gamma-ray activity. Finding one or two neutrinos originating from gamma-ray blazars in the given sample of high-energy neutrinos is consistent with previously derived limits of neutrino emission from gamma-ray blazars, indicating the sources of the majority of cosmic high-energy neutrinos remain unknown. |
| Document Type: |
article in journal/newspaper |
| Language: |
English |
| ISSN: |
1538-4357; 0004-637X |
| Relation: |
info:eu-repo/semantics/altIdentifier/arxiv/arXiv:1901.10806; info:eu-repo/semantics/altIdentifier/issn/1538-4357; info:eu-repo/semantics/altIdentifier/wos/WOS:000478778000031; info:eu-repo/semantics/altIdentifier/issn/0004-637X |
| Availability: |
https://bib-pubdb1.desy.de/record/426403; https://bib-pubdb1.desy.de/search?p=id:%22PUBDB-2019-03715%22 |
| Rights: |
info:eu-repo/semantics/openAccess |
| Accession Number: |
edsbas.6BC28433 |
| Database: |
BASE |