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9 results on '"Samarai, IA"'

1. A Search for Neutrino Emission from Fast Radio Bursts with Six Years of IceCube Data

Author

Aartsen, MG, Ackermann, M, Adams, J, Aguilar, JA, Ahlers, M, Ahrens, M, Samarai, IA, Altmann, D, Andeen, K, Anderson, T, Ansseau, I, Anton, G, Argüelles, C, Auffenberg, J, Axani, S, Bagherpour, H, Bai, X, Barron, JP, Barwick, SW, Baum, V, Bay, R, Beatty, JJ, Tjus, JB, Becker, KH, Benzvi, S, Berley, D, Bernardini, E, Besson, DZ, Binder, G, Bindig, D, Blaufuss, E, Blot, S, Bohm, C, Börner, M, Bos, F, Böser, S, Botner, O, Bourbeau, E, Bourbeau, J, Bradascio, F, Braun, J, Brenzke, M, Bretz, HP, Bron, S, Brostean-Kaiser, J, Burgman, A, Busse, RS, Carver, T, Cheung, E, Chirkin, D, Christov, A, Clark, K, Classen, L, Collin, GH, Conrad, JM, Coppin, P, Correa, P, Cowen, DF, Cross, R, Dave, P, Day, M, André, JPAMD, De Clercq, C, Delaunay, JJ, Dembinski, H, Ridder, SD, Desiati, P, De Vries, KD, De Wasseige, G, With, MD, Deyoung, T, Díaz-Vélez, JC, Lorenzo, VD, Dujmovic, H, Dumm, JP, Dunkman, M, Dvorak, E, Eberhardt, B, Ehrhardt, T, Eichmann, B, Eller, P, Evenson, PA, Fahey, S, Fazely, AR, Felde, J, Filimonov, K, Finley, C, Flis, S, Franckowiak, A, Friedman, E, Fritz, A, Gaisser, TK, Gallagher, J, Gerhardt, L, Ghorbani, K, Giang, W, Glauch, T, Glüsenkamp, T, Goldschmidt, A, and Gonzalez, JG

Subjects
astroparticle physics, cosmic rays, elementary particles, neutrinos, radiation mechanisms: non-thermal, astro-ph.HE, Astronomy & Astrophysics, Astronomical and Space Sciences, Atomic, Molecular, Nuclear, Particle and Plasma Physics, Physical Chemistry, Atomic, Molecular, Nuclear, Particle and Plasma Physics, Physical Chemistry (incl. Structural)
Abstract

We present a search for coincidence between IceCube TeV neutrinos and fast radio bursts (FRBs). During the search period from 2010 May 31 to 2016 May 12, a total of 29 FRBs with 13 unique locations have been detected in the whole sky. An unbinned maximum likelihood method was used to search for spatial and temporal coincidence between neutrinos and FRBs in expanding time windows, in both the northern and southern hemispheres. No significant correlation was found in six years of IceCube data. Therefore, we set upper limits on neutrino fluence emitted by FRBs as a function of time window duration. We set the most stringent limit obtained to date on neutrino fluence from FRBs with an E -2 energy spectrum assumed, which is 0.0021 GeV cm-2 per burst for emission timescales up to ∼102 s from the northern hemisphere stacking search.

Published
2018

2. Constraints on Galactic Neutrino Emission with Seven Years of IceCube Data

Author

Aartsen, MG, Ackermann, M, Adams, J, Aguilar, JA, Ahlers, M, Ahrens, M, Samarai, IA, Altmann, D, Andeen, K, Anderson, T, Ansseau, I, Anton, G, Argüelles, C, Auffenberg, J, Axani, S, Bagherpour, H, Bai, X, Barron, JP, Barwick, SW, Baum, V, Bay, R, Beatty, JJ, Tjus, JB, Becker, KH, Benzvi, S, Berley, D, Bernardini, E, Besson, DZ, Binder, G, Bindig, D, Blaufuss, E, Blot, S, Bohm, C, Börner, M, Bos, F, Bose, D, Böser, S, Botner, O, Bourbeau, J, Bradascio, F, Braun, J, Brayeur, L, Brenzke, M, Bretz, HP, Bron, S, Burgman, A, Carver, T, Casey, J, Casier, M, Cheung, E, Chirkin, D, Christov, A, Clark, K, Classen, L, Coenders, S, Collin, GH, Conrad, JM, Cowen, DF, Cross, R, Day, M, André, JPAMD, Clercq, CD, Delaunay, JJ, Dembinski, H, Ridder, SD, Desiati, P, Vries, KDD, Wasseige, GD, With, MD, Deyoung, T, Daz-Vélez, JC, Lorenzo, VD, Dujmovic, H, Dumm, JP, Dunkman, M, Eberhardt, B, Ehrhardt, T, Eichmann, B, Eller, P, Evenson, PA, Fahey, S, Fazely, AR, Felde, J, Filimonov, K, Finley, C, Flis, S, Franckowiak, A, Friedman, E, Fuchs, T, Gaisser, TK, Gallagher, J, Gerhardt, L, Ghorbani, K, Giang, W, Glauch, T, Glüsenkamp, T, Goldschmidt, A, Gonzalez, JG, Grant, D, and Griffith, Z

Subjects
gamma rays: ISM, astro-ph.HE, Astronomy & Astrophysics, Astronomical and Space Sciences, Atomic, Molecular, Nuclear, Particle and Plasma Physics, Physical Chemistry, Atomic, Molecular, Nuclear, Particle and Plasma Physics, Physical Chemistry (incl. Structural)
Abstract

The origins of high-energy astrophysical neutrinos remain a mystery despite extensive searches for their sources. We present constraints from seven years of IceCube Neutrino Observatory muon data on the neutrino flux coming from the Galactic plane. This flux is expected from cosmic-ray interactions with the interstellar medium or near localized sources. Two methods were developed to test for a spatially extended flux from the entire plane, both of which are maximum likelihood fits but with different signal and background modeling techniques. We consider three templates for Galactic neutrino emission based primarily on gamma-ray observations and models that cover a wide range of possibilities. Based on these templates and in the benchmark case of an unbroken E-2.5 power-law energy spectrum, we set 90% confidence level upper limits, constraining the possible Galactic contribution to the diffuse neutrino flux to be relatively small, less than 14% of the flux reported in Aartsen et al. above 1 TeV. A stacking method is also used to test catalogs of known high-energy Galactic gamma-ray sources.

Published
2017

3. Extending the Search for Muon Neutrinos Coincident with Gamma-Ray Bursts in IceCube Data

Author

Collaboration, I, Aartsen, MG, Ackermann, M, Adams, J, Aguilar, JA, Ahlers, M, Ahrens, M, Samarai, IA, Altmann, D, Andeen, K, Anderson, T, Ansseau, I, Anton, G, Archinger, M, Argüelles, C, Auffenberg, J, Axani, S, Bai, X, Barwick, SW, Baum, V, Bay, R, Beatty, JJ, Tjus, JB, Becker, KH, Benzvi, S, Berley, D, Bernardini, E, Besson, DZ, Binder, G, Bindig, D, Blaufuss, E, Blot, S, Bohm, C, Börner, M, Bos, F, Bose, D, Böser, S, Botner, O, Braun, J, Brayeur, L, Bretz, HP, Bron, S, Burgman, A, Carver, T, Casier, M, Cheung, E, Chirkin, D, Christov, A, Clark, K, Classen, L, Coenders, S, Collin, GH, Conrad, JM, Cowen, DF, Cross, R, Day, M, De André, JPAM, De Clercq, C, Del Pino Rosendo, E, Dembinski, H, Ridder, SD, Desiati, P, De Vries, KD, De Wasseige, G, De With, M, Deyoung, T, Díaz-Vélez, JC, Lorenzo, VD, Dujmovic, H, Dumm, JP, Dunkman, M, Eberhardt, B, Ehrhardt, T, Eichmann, B, Eller, P, Euler, S, Evenson, PA, Fahey, S, Fazely, AR, Feintzeig, J, Felde, J, Filimonov, K, Finley, C, Flis, S, Fösig, CC, Franckowiak, A, Friedman, E, Fuchs, T, Gaisser, TK, Gallagher, J, Gerhardt, L, Ghorbani, K, Giang, W, Gladstone, L, Glauch, T, Glüsenkamp, T, Goldschmidt, A, Gonzalez, JG, Grant, D, and Griffith, Z

Subjects
acceleration of particles, astroparticle physics, gamma-ray burst: general, neutrinos, astro-ph.HE, Astronomy & Astrophysics, Astronomical and Space Sciences, Atomic, Molecular, Nuclear, Particle and Plasma Physics, Physical Chemistry, Atomic, Molecular, Nuclear, Particle and Plasma Physics, Physical Chemistry (incl. Structural)
Abstract

We present an all-sky search for muon neutrinos produced during the prompt γ-ray emission of 1172 gamma-ray bursts (GRBs) with the IceCube Neutrino Observatory. The detection of these neutrinos would constitute evidence for ultra-high-energy cosmic-ray (UHECR) production in GRBs, as interactions between accelerated protons and the prompt γ-ray field would yield charged pions, which decay to neutrinos. A previously reported search for muon neutrino tracks from northern hemisphere GRBs has been extended to include three additional years of IceCube data. A search for such tracks from southern hemisphere GRBs in five years of IceCube data has been introduced to enhance our sensitivity to the highest energy neutrinos. No significant correlation between neutrino events and observed GRBs is seen in the new data. Combining this result with previous muon neutrino track searches and a search for cascade signature events from all neutrino flavors, we obtain new constraints for single-zone fireball models of GRB neutrino and UHECR production.

Published
2017

4. Search for a correlation between the UHECRs measured by the Pierre Auger Observatory and the Telescope Array and the neutrino candidate events from IceCube

Author

Collaboration, IceCube, Aartsen, MG, Abraham, K, Ackermann, M, Adams, J, Aguilar, JA, Ahlers, M, Ahrens, M, Altmann, D, Anderson, T, Ansseau, I, Archinger, M, Arguelles, C, Arlen, TC, Auffenberg, J, Bai, X, Barwick, SW, Baum, V, Bay, R, Beatty, JJ, Tjus, JB, Becker, K-H, Beiser, E, Benzvi, S, Berghaus, P, Berley, D, Bernardini, E, Bernhard, A, Besson, DZ, Binder, G, Bindig, D, Bissok, M, Blaufuss, E, Blumenthal, J, Boersma, DJ, Bohm, C, Börner, M, Bos, F, Bose, D, Böser, S, Botner, O, Braun, J, Brayeur, L, Bretz, H-P, Buzinsky, N, Casey, J, Casier, M, Cheung, E, Chirkin, D, Christov, A, Clark, K, Classen, L, Coenders, S, Cowen, DF, Silva, AHC, Daughhetee, J, Davis, JC, Day, M, André, JPAMD, Clercq, CD, Rosendo, EDP, Dembinski, H, Ridder, SD, Desiati, P, Vries, KDD, Wasseige, GD, With, MD, Deyoung, T, Díaz-Vélez, JC, Lorenzo, VD, Dumm, JP, Dunkman, M, Eagan, R, Eberhardt, B, Ehrhardt, T, Eichmann, B, Euler, S, Evenson, PA, Fadiran, O, Fahey, S, Fazely, AR, Fedynitch, A, Feintzeig, J, Felde, J, Filimonov, K, Finley, C, Fischer-Wasels, T, Flis, S, Fösig, C-C, Fuchs, T, Gaisser, TK, Gaior, R, Gallagher, J, Gerhardt, L, Ghorbani, K, Gier, D, Gladstone, L, Glagla, M, Glüsenkamp, T, Goldschmidt, A, Golup, G, Gonzalez, JG, Góra, D, Grant, D, Groh, JC, Groß, A, Ha, C, Haack, C, Ismail, AH, Hallgren, A, Halzen, F, Hansmann, B, Hanson, K, Hebecker, D, Heereman, D, Helbing, K, Hellauer, R, Hellwig, D, Hickford, S, Hignight, J, Hill, GC, Hoffman, KD, Hoffmann, R, Holzapfel, K, Homeier, A, Hoshina, K, Huang, F, Huber, M, Huelsnitz, W, Hulth, PO, Hultqvist, K, In, S, Ishihara, A, Jacobi, E, Japaridze, GS, Jero, K, Jurkovic, M, Kaminsky, B, Kappes, A, Karg, T, Karle, A, Kauer, M, Keivani, A, Kelley, JL, Kemp, J, Kheirandish, A, Kiryluk, J, Kläs, J, Klein, SR, Kohnen, G, Koirala, R, Kolanoski, H, Konietz, R, Koob, A, Köpke, L, Kopper, C, Kopper, S, Koskinen, DJ, Kowalski, M, Krings, K, Kroll, G, Kroll, M, Kunnen, J, Kurahashi, N, Kuwabara, T, Labare, M, Lanfranchi, JL, Larson, MJ, Lesiak-Bzdak, M, Leuermann, M, Leuner, J, Lu, L, Lünemann, J, Madsen, J, Maggi, G, Mahn, KBM, Maruyama, R, Mase, K, Matis, HS, Maunu, R, McNally, F, Meagher, K, Medici, M, Meli, A, Menne, T, Merino, G, Meures, T, Miarecki, S, Middell, E, Middlemas, E, Mohrmann, L, Montaruli, T, Morse, R, Nahnhauer, R, Naumann, U, Neer, G, Niederhausen, H, Nowicki, SC, Nygren, DR, Obertacke, A, Olivas, A, Omairat, A, O'Murchadha, A, Palczewski, T, Pandya, H, Paul, L, Pepper, JA, Heros, CPDL, Pfendner, C, Pieloth, D, Pinat, E, Posselt, J, Price, PB, Przybylski, GT, Pütz, J, Quinnan, M, Raab, C, Rädel, L, Rameez, M, Rawlins, K, Reimann, R, Relich, M, Resconi, E, Rhode, W, Richman, M, Richter, S, Riedel, B, Robertson, S, Rongen, M, Rott, C, Ruhe, T, Ryckbosch, D, Saba, SM, Sabbatini, L, Sander, H-G, Sandrock, A, Sandroos, J, Sarkar, S, Schatto, K, Scheriau, F, Schimp, M, Schmidt, T, Schmitz, M, Schoenen, S, Schöneberg, S, Schönwald, A, Schulte, L, Seckel, D, Seunarine, S, Shanidze, R, Smith, MWE, Soldin, D, Song, M, Spiczak, GM, Spiering, C, Stahlberg, M, Stamatikos, M, Stanev, T, Stanisha, NA, Stasik, A, Stezelberger, T, Stokstad, RG, Stößl, A, Ström, R, Strotjohann, NL, Sullivan, GW, Sutherland, M, Taavola, H, Taboada, I, Ter-Antonyan, S, Terliuk, A, Tešić, G, Tilav, S, Toale, PA, Tobin, MN, Toscano, S, Tosi, D, Tselengidou, M, Turcati, A, Unger, E, Usner, M, Vallecorsa, S, Vandenbroucke, J, Eijndhoven, NV, Vanheule, S, Santen, JV, Veenkamp, J, Vehring, M, Voge, M, Vraeghe, M, Walck, C, Wallace, A, Wallraff, M, Wandkowsky, N, Weaver, C, Wendt, C, Westerhoff, S, Whelan, BJ, Whitehorn, N, Wichary, C, Wiebe, K, Wiebusch, CH, Wille, L, Williams, DR, Wissing, H, Wolf, M, Wood, TR, Woschnagg, K, Xu, DL, Xu, XW, Xu, Y, Yanez, JP, Yodh, G, Yoshida, S, Zoll, M, Collaboration, PA, Aab, A, Abreu, P, Aglietta, M, Ahn, EJ, Samarai, IA, Albuquerque, IFM, Allekotte, I, Allison, P, Almela, A, Castillo, JA, Alvarez-Muñiz, J, Batista, RA, Ambrosio, M, Aminaei, A, Anastasi, GA, Anchordoqui, L, Andringa, S, Aramo, C, Arqueros, F, Arsene, N, Asorey, H, Assis, P, Aublin, J, Avila, G, Awal, N, Badescu, AM, Baus, C, Becker, KH, Bellido, JA, Berat, C, Bertaina, ME, Bertou, X, Biermann, PL, Billoir, P, Blaess, SG, Blanco, A, Blanco, M, Blazek, J, Bleve, C, Blümer, H, Boháčová, M, Boncioli, D, Bonifazi, C, Borodai, N, Brack, J, Brancus, I, Bretz, T, Bridgeman, A, Brogueira, P, Buchholz, P, Bueno, A, Buitink, S, Buscemi, M, Caballero-Mora, KS, Caccianiga, B, Caccianiga, L, Candusso, M, Caramete, L, Caruso, R, Castellina, A, Cataldi, G, Cazon, L, Cester, R, Chavez, AG, Chiavassa, A, Chinellato, JA, Chudoba, J, Cilmo, M, Clay, RW, Cocciolo, G, Colalillo, R, Coleman, A, Collica, L, Coluccia, MR, Conceição, R, Contreras, F, Cooper, MJ, Cordier, A, Coutu, S, Covault, CE, Dallier, R, Daniel, B, Dasso, S, Daumiller, K, Dawson, BR, Almeida, RMD, Jong, SJD, Mauro, GD, Neto, JRTDM, Mitri, ID, Oliveira, JD, Souza, VD, Peral, LD, Deligny, O, Dhital, N, Giulio, CD, Matteo, AD, Diaz, JC, Castro, MLD, Diogo, F, Dobrigkeit, C, Docters, W, D'Olivo, JC, Dorofeev, A, Hasankiadeh, QD, Anjos, RCD, Dova, MT, Ebr, J, Engel, R, Erdmann, M, Erfani, M, Escobar, CO, Espadanal, J, Etchegoyen, A, Falcke, H, Fang, K, Farrar, G, Fauth, AC, Fazzini, N, Ferguson, AP, Fick, B, Figueira, JM, Filevich, A, Filipčič, A, Fratu, O, Freire, MM, Fujii, T, García, B, García-Gámez, D, Garcia-Pinto, D, Gate, F, Gemmeke, H, Gherghel-Lascu, A, Ghia, PL, Giaccari, U, Giammarchi, M, Giller, M, Głas, D, Glaser, C, Glass, H, Berisso, MG, Vitale, PFG, González, N, Gookin, B, Gordon, J, Gorgi, A, Gorham, P, Gouffon, P, Griffith, N, Grillo, AF, Grubb, TD, Guarino, F, Guedes, GP, Hampel, MR, Hansen, P, Harari, D, Harrison, TA, Hartmann, S, Harton, JL, Haungs, A, Hebbeker, T, Heck, D, Heimann, P, Hervé, AE, Hojvat, C, Hollon, N, Holt, E, Homola, P, Hörandel, JR, Horvath, P, Hrabovský, M, Huber, D, Huege, T, Insolia, A, Isar, PG, Jandt, I, Jansen, S, Jarne, C, Johnsen, JA, Josebachuili, M, Kääpä, A, Kambeitz, O, Kampert, KH, Kasper, P, Katkov, I, Keilhauer, B, Kemp, E, Kieckhafer, RM, Klages, HO, Kleifges, M, Kleinfeller, J, Krause, R, Krohm, N, Kuempel, D, Mezek, GK, Kunka, N, Awad, AWK, Lahurd, D, Latronico, L, Lauer, R, Lauscher, M, Lautridou, P, Coz, SL, Lebrun, D, Lebrun, P, Oliveira, MALD, Letessier-Selvon, A, Lhenry-Yvon, I, Link, K, Lopes, L, López, R, Casado, AL, Louedec, K, Lucero, A, Malacari, M, Mallamaci, M, Maller, J, Mandat, D, Mantsch, P, Mariazzi, AG, Marin, V, Mariş, IC, Marsella, G, Martello, D, Martinez, H, Bravo, OM, Martraire, D, Meza, JJM, Mathes, HJ, Mathys, S, Matthews, J, Matthews, JAJ, Matthiae, G, Maurizio, D, Mayotte, E, Mazur, PO, Medina, C, Medina-Tanco, G, Meissner, R, Mello, VBB, Melo, D, Menshikov, A, Messina, S, Micheletti, MI, Middendorf, L, Minaya, IA, Miramonti, L, Mitrica, B, Molina-Bueno, L, Mollerach, S, Montanet, F, Morello, C, Mostafá, M, Moura, CA, Müller, G, Muller, MA, Müller, S, Navas, S, Necesal, P, Nellen, L, Nelles, A, Neuser, J, Nguyen, PH, Niculescu-Oglinzanu, M, Niechciol, M, Niemietz, L, Niggemann, T, Nitz, D, Nosek, D, Novotny, V, Nožka, L, Núñez, LA, Ochilo, L, Oikonomou, F, Olinto, A, Pacheco, N, Selmi-Dei, DP, Palatka, M, Pallotta, J, Papenbreer, P, Parente, G, Parra, A, Paul, T, Pech, M, Pȩkala, J, Pelayo, R, Pepe, IM, Perrone, L, Petermann, E, Peters, C, Petrera, S, Petrov, Y, Phuntsok, J, Piegaia, R, Pierog, T, Pieroni, P, Pimenta, M, Pirronello, V, Platino, M, Plum, M, Porcelli, A, Porowski, C, Prado, RR, Privitera, P, Prouza, M, Quel, EJ, Querchfeld, S, Quinn, S, Rautenberg, J, Ravel, O, Ravignani, D, Reinert, D, Revenu, B, Ridky, J, Risse, M, Ristori, P, Rizi, V, Carvalho, WRD, Rojo, JR, Rodríguez-Frías, MD, Rogozin, D, Rosado, J, Roth, M, Roulet, E, Rovero, AC, Saffi, SJ, Saftoiu, A, Salamida, F, Salazar, H, Saleh, A, Greus, FS, Salina, G, Gomez, JDS, Sánchez, F, Sanchez-Lucas, P, Santos, EM, Santos, E, Sarazin, F, Sarkar, B, Sarmento, R, Sarmiento-Cano, C, Sato, R, Scarso, C, Schauer, M, Scherini, V, Schieler, H, Schmidt, D, Scholten, O, Schoorlemmer, H, Schovánek, P, Schröder, FG, Schulz, A, Schulz, J, Schumacher, J, Sciutto, SJ, Segreto, A, Settimo, M, Shadkam, A, Shellard, RC, Sigl, G, Sima, O, Śmiałkowski, A, Šmída, R, Snow, GR, Sommers, P, Sonntag, S, Sorokin, J, Squartini, R, Srivastava, YN, Stanca, D, Stanič, S, Stapleton, J, Stasielak, J, Stephan, M, Stutz, A, Suarez, F, Durán, MS, Suomijärvi, T, Supanitsky, AD, Sutherland, MS, Swain, J, Szadkowski, Z, Taborda, OA, Tapia, A, Tepe, A, Theodoro, VM, Tibolla, O, Timmermans, C, Peixoto, CJT, Toma, G, Tomankova, L, Tomé, B, Tonachini, A, Elipe, GT, Machado, DT, Travnicek, P, Trini, M, Ulrich, R, Unger, M, Urban, M, Galicia, JFV, Valiño, I, Valore, L, Aar, GV, Bodegom, PV, Berg, AMVD, Velzen, SV, Vliet, AV, Varela, E, Cárdenas, BV, Varner, G, Vasquez, R, Vázquez, JR, Vázquez, RA, Veberič, D, Verzi, V, Vicha, J, Videla, M, Villaseñor, L, Vlcek, B, Vorobiov, S, Wahlberg, H, Wainberg, O, Walz, D, Watson, AA, Weber, M, Weidenhaupt, K, Weindl, A, Welling, C, Werner, F, Widom, A, Wiencke, L, Wilczyński, H, Winchen, T, Wittkowski, D, Wundheiler, B, Wykes, S, Yang, L, Yapici, T, Yushkov, A, Zas, E, Zavrtanik, D, Zavrtanik, M, Zepeda, A, Zimmermann, B, Ziolkowski, M, Zuccarello, F, Collaboration, TA, Abbasi, RU, Abe, M, Abu-Zayyad, T, Allen, M, Azuma, R, Barcikowski, E, Belz, JW, Bergman, DR, Blake, SA, Cady, R, Chae, MJ, Cheon, BG, Chiba, J, Chikawa, M, Cho, WR, Fukushima, M, Goto, T, Hanlon, W, Hayashi, Y, Hayashida, N, Hibino, K, Honda, K, Ikeda, D, Inoue, N, Ishii, T, Ishimori, R, Ito, H, Ivanov, D, Jui, CCH, Kadota, K, Kakimoto, F, Kalashev, O, Kasahara, K, Kawai, H, Kawakami, S, Kawana, S, Kawata, K, Kido, E, Kim, HB, Kim, JH, Kitamura, S, Kitamura, Y, Kuzmin, V, Kwon, YJ, Lan, J, Lim, SI, Lundquist, JP, Machida, K, Martens, K, Matsuda, T, Matsuyama, T, Matthews, JN, Minamino, M, Mukai, Y, Myers, I, Nagasawa, K, Nagataki, S, Nakamura, T, Nonaka, T, Nozato, A, Ogio, S, Ogura, J, Ohnishi, M, Ohoka, H, Oki, K, Okuda, T, Ono, M, Oshima, A, Ozawa, S, Park, IH, Pshirkov, MS, Rodriguez, DC, Rubtsov, G, Ryu, D, Sagawa, H, Sakurai, N, Scott, LM, Shah, PD, Shibata, F, Shibata, T, Shimodaira, H, Shin, BK, Shin, HS, Smith, JD, Sokolsky, P, Springer, RW, Stokes, BT, Stratton, SR, Stroman, TA, Suzawa, T, Takamura, M, Takeda, M, Takeishi, R, Taketa, A, Takita, M, Tameda, Y, Tanaka, H, Tanaka, K, Tanaka, M, Thomas, SB, Thomson, GB, Tinyakov, P, Tkachev, I, Tokuno, H, Tomida, T, Troitsky, S, Tsunesada, Y, Tsutsumi, K, Uchihori, Y, Udo, S, Urban, F, Vasiloff, G, Wong, T, Yamane, R, Yamaoka, H, Yamazaki, K, Yang, J, Yashiro, K, Yoneda, Y, Yoshii, H, Zollinger, R, and Zundel, Z

Abstract

We have conducted three searches for correlations between ultra-high energy cosmic rays detected by the Telescope Array and the Pierre Auger Observatory, and high-energy neutrino candidate events from IceCube. Two cross-correlation analyses with UHECRs are done: one with 39 cascades from the IceCube ‘high-energy starting events’ sample and the other with 16 high-energy ‘track events’. The angular separation between the arrival directions of neutrinos and UHECRs is scanned over. The same events are also used in a separate search using a maximum likelihood approach, after the neutrino arrival directions are stacked. To estimate the significance we assume UHECR magnetic deflections to be inversely proportional to their energy, with values 3◦ , 6◦ and 9 ◦ at 100 EeV to allow for the uncertainties on the magnetic field strength and UHECR charge. A similar analysis is performed on stacked UHECR arrival directions and the IceCube sample of through-going muon track events which were optimized for neutrino point-source searches.

Published
2019

5. Search for neutrinos from decaying dark matter with IceCube: IceCube Collaboration

Author

Aartsen, MG, Ackermann, M, Adams, J, Aguilar, JA, Ahlers, M, Ahrens, M, Samarai, IA, Altmann, D, Andeen, K, Anderson, T, Ansseau, I, Anton, G, Argüelles, C, Auffenberg, J, Axani, S, Backes, P, Bagherpour, H, Bai, X, Barron, JP, Barwick, SW, Baum, V, Bay, R, Beatty, JJ, Becker Tjus, J, Becker, KH, BenZvi, S, Berley, D, Bernardini, E, Besson, DZ, Binder, G, Bindig, D, Blaufuss, E, Blot, S, Bohm, C, Börner, M, Bos, F, Böser, S, Botner, O, Bourbeau, E, Bourbeau, J, Bradascio, F, Braun, J, Brenzke, M, Bretz, HP, Bron, S, Brostean-Kaiser, J, Burgman, A, Busse, RS, Carver, T, Cheung, E, Chirkin, D, Christov, A, Clark, K, Classen, L, Collin, GH, Conrad, JM, Coppin, P, Correa, P, Cowen, DF, Cross, R, Dave, P, Day, M, de André, JPAM, De Clercq, C, DeLaunay, JJ, Dembinski, H, De Ridder, S, Desiati, P, de Vries, KD, de Wasseige, G, de With, M, DeYoung, T, Díaz-Vélez, JC, di Lorenzo, V, Dujmovic, H, Dumm, JP, Dunkman, M, Dvorak, E, Eberhardt, B, Ehrhardt, T, Eichmann, B, Eller, P, Evenson, PA, Fahey, S, Fazely, AR, Felde, J, Filimonov, K, Finley, C, Flis, S, Franckowiak, A, Friedman, E, Fritz, A, Gaisser, TK, Gallagher, J, Ganster, E, Gerhardt, L, and Ghorbani, K

Subjects
Astrophysics::High Energy Astrophysical Phenomena, Astrophysics::Instrumentation and Methods for Astrophysics
Abstract

© 2018, The Author(s). With the observation of high-energy astrophysical neutrinos by the IceCube Neutrino Observatory, interest has risen in models of PeV-mass decaying dark matter particles to explain the observed flux. We present two dedicated experimental analyses to test this hypothesis. One analysis uses 6 years of IceCube data focusing on muon neutrino ‘track’ events from the Northern Hemisphere, while the second analysis uses 2 years of ‘cascade’ events from the full sky. Known background components and the hypothetical flux from unstable dark matter are fitted to the experimental data. Since no significant excess is observed in either analysis, lower limits on the lifetime of dark matter particles are derived: we obtain the strongest constraint to date, excluding lifetimes shorter than 1028s at 90% CL for dark matter masses above 10TeV.

Published
2018

6. A Targeted Search for Point Sources of EeV Photons with the Pierre Auger Observatory

Author

Aab, A, Aab, A, Abreu, P, Aglietta, M, Samarai, IA, Albuquerque, IFM, Allekotte, I, Almela, A, Castillo, JA, Alvarez-Muñiz, J, Anastasi, GA, Anchordoqui, L, Andrada, B, Andringa, S, Aramo, C, Arqueros, F, Arsene, N, Asorey, H, Assis, P, Aublin, J, Avila, G, Badescu, AM, Balaceanu, A, Luz, RJB, Beatty, JJ, Becker, KH, Bellido, JA, Berat, C, Bertaina, ME, Bertou, X, Biermann, PL, Billoir, P, Biteau, J, Blaess, SG, Blanco, A, Blazek, J, Bleve, C, Boháčová, M, Boncioli, D, Bonifazi, C, Borodai, N, Botti, AM, Brack, J, Brancus, I, Bretz, T, Bridgeman, A, Briechle, FL, Buchholz, P, Bueno, A, Buitink, S, Buscemi, M, Caballero-Mora, KS, Caccianiga, L, Cancio, A, Canfora, F, Caramete, L, Caruso, R, Castellina, A, Cataldi, G, Cazon, L, Chavez, AG, Chinellato, JA, Chudoba, J, Clay, RW, Colalillo, R, Coleman, A, Collica, L, Coluccia, MR, Conceião, R, Contreras, F, Cooper, MJ, Coutu, S, Covault, CE, Cronin, J, D'Amico, S, Daniel, B, Dasso, S, Daumiller, K, Dawson, BR, De Almeida, RM, De Jong, SJ, De Mauro, G, De Neto, JRTM, De Mitri, I, De Oliveira, J, De Souza, V, Debatin, J, Deligny, O, Di Giulio, C, Di Matteo, A, Castro, MLD, Diogo, F, Dobrigkeit, C, D'Olivo, JC, Dorosti, Q, Anjos, RCD, Dova, MT, Dundovic, A, Ebr, J, Engel, R, Erdmann, M, Aab, A, Aab, A, Abreu, P, Aglietta, M, Samarai, IA, Albuquerque, IFM, Allekotte, I, Almela, A, Castillo, JA, Alvarez-Muñiz, J, Anastasi, GA, Anchordoqui, L, Andrada, B, Andringa, S, Aramo, C, Arqueros, F, Arsene, N, Asorey, H, Assis, P, Aublin, J, Avila, G, Badescu, AM, Balaceanu, A, Luz, RJB, Beatty, JJ, Becker, KH, Bellido, JA, Berat, C, Bertaina, ME, Bertou, X, Biermann, PL, Billoir, P, Biteau, J, Blaess, SG, Blanco, A, Blazek, J, Bleve, C, Boháčová, M, Boncioli, D, Bonifazi, C, Borodai, N, Botti, AM, Brack, J, Brancus, I, Bretz, T, Bridgeman, A, Briechle, FL, Buchholz, P, Bueno, A, Buitink, S, Buscemi, M, Caballero-Mora, KS, Caccianiga, L, Cancio, A, Canfora, F, Caramete, L, Caruso, R, Castellina, A, Cataldi, G, Cazon, L, Chavez, AG, Chinellato, JA, Chudoba, J, Clay, RW, Colalillo, R, Coleman, A, Collica, L, Coluccia, MR, Conceião, R, Contreras, F, Cooper, MJ, Coutu, S, Covault, CE, Cronin, J, D'Amico, S, Daniel, B, Dasso, S, Daumiller, K, Dawson, BR, De Almeida, RM, De Jong, SJ, De Mauro, G, De Neto, JRTM, De Mitri, I, De Oliveira, J, De Souza, V, Debatin, J, Deligny, O, Di Giulio, C, Di Matteo, A, Castro, MLD, Diogo, F, Dobrigkeit, C, D'Olivo, JC, Dorosti, Q, Anjos, RCD, Dova, MT, Dundovic, A, Ebr, J, Engel, R, and Erdmann, M

Abstract

Simultaneous measurements of air showers with the fluorescence and surface detectors of the Pierre Auger Observatory allow a sensitive search for EeV photon point sources. Several Galactic and extragalactic candidate objects are grouped in classes to reduce the statistical penalty of many trials from that of a blind search and are analyzed for a significant excess above the background expectation. The presented search does not find any evidence for photon emission at candidate sources, and combined p-values for every class are reported. Particle and energy flux upper limits are given for selected candidate sources. These limits significantly constrain predictions of EeV proton emission models from non-transient Galactic and nearby extragalactic sources, as illustrated for the particular case of the Galactic center region.

Published
2017

7. Search for neutrinos from decaying dark matter with IceCube: IceCube Collaboration.

Author

Aartsen MG, Ackermann M, Adams J, Aguilar JA, Ahlers M, Ahrens M, Samarai IA, Altmann D, Andeen K, Anderson T, Ansseau I, Anton G, Argüelles C, Auffenberg J, Axani S, Backes P, Bagherpour H, Bai X, Barron JP, Barwick SW, Baum V, Bay R, Beatty JJ, Becker Tjus J, Becker KH, BenZvi S, Berley D, Bernardini E, Besson DZ, Binder G, Bindig D, Blaufuss E, Blot S, Bohm C, Börner M, Bos F, Böser S, Botner O, Bourbeau E, Bourbeau J, Bradascio F, Braun J, Brenzke M, Bretz HP, Bron S, Brostean-Kaiser J, Burgman A, Busse RS, Carver T, Cheung E, Chirkin D, Christov A, Clark K, Classen L, Collin GH, Conrad JM, Coppin P, Correa P, Cowen DF, Cross R, Dave P, Day M, de André JPAM, De Clercq C, DeLaunay JJ, Dembinski H, De Ridder S, Desiati P, de Vries KD, de Wasseige G, de With M, DeYoung T, Díaz-Vélez JC, di Lorenzo V, Dujmovic H, Dumm JP, Dunkman M, Dvorak E, Eberhardt B, Ehrhardt T, Eichmann B, Eller P, Evenson PA, Fahey S, Fazely AR, Felde J, Filimonov K, Finley C, Flis S, Franckowiak A, Friedman E, Fritz A, Gaisser TK, Gallagher J, Ganster E, Gerhardt L, Ghorbani K, Giang W, Glauch T, Glüsenkamp T, Goldschmidt A, Gonzalez JG, Grant D, Griffith Z, Haack C, Hallgren A, Halve L, Halzen F, Hanson K, Hebecker D, Heereman D, Helbing K, Hellauer R, Hickford S, Hignight J, Hill GC, Hoffman KD, Hoffmann R, Hoinka T, Hokanson-Fasig B, Hoshina K, Huang F, Huber M, Hultqvist K, Hünnefeld M, Hussain R, In S, Iovine N, Ishihara A, Jacobi E, Japaridze GS, Jeong M, Jero K, Jones BJP, Kalaczynski P, Kang W, Kappes A, Kappesser D, Karg T, Karle A, Katz U, Kauer M, Keivani A, Kelley JL, Kheirandish A, Kim J, Kim M, Kintscher T, Kiryluk J, Kittler T, Klein SR, Koirala R, Kolanoski H, Köpke L, Kopper C, Kopper S, Koschinsky JP, Koskinen DJ, Kowalski M, Krings K, Kroll M, Krückl G, Kunwar S, Kurahashi N, Kuwabara T, Kyriacou A, Labare M, Lanfranchi JL, Larson MJ, Lauber F, Leonard K, Lesiak-Bzdak M, Leuermann M, Liu QR, Lohfink E, Mariscal CJL, Lu L, Lünemann J, Luszczak W, Madsen J, Maggi G, Mahn KBM, Mancina S, Maruyama R, Mase K, Maunu R, Meagher K, Medici M, Meier M, Menne T, Merino G, Meures T, Miarecki S, Micallef J, Momenté G, Montaruli T, Moore RW, Moulai M, Nahnhauer R, Nakarmi P, Naumann U, Neer G, Niederhausen H, Nowicki SC, Nygren DR, Obertacke Pollmann A, Olivas A, O'Murchadha A, O'Sullivan E, Palczewski T, Pandya H, Pankova DV, Peiffer P, Pepper JA, Pérez de Los Heros C, Pieloth D, Pinat E, Plum M, Price PB, Przybylski GT, Raab C, Rädel L, Rameez M, Rauch L, Rawlins K, Rea IC, Reimann R, Relethford B, Relich M, Resconi E, Rhode W, Richman M, Robertson S, Rongen M, Rott C, Ruhe T, Ryckbosch D, Rysewyk D, Safa I, Sanchez Herrera SE, Sandrock A, Sandroos J, Santander M, Sarkar S, Sarkar S, Satalecka K, Schaufel M, Schlunder P, Schmidt T, Schneider A, Schoenen S, Schöneberg S, Schumacher L, Sclafani S, Seckel D, Seunarine S, Soedingrekso J, Soldin D, Song M, Spiczak GM, Spiering C, Stachurska J, Stamatikos M, Stanev T, Stasik A, Stein R, Stettner J, Steuer A, Stezelberger T, Stokstad RG, Stößl A, Strotjohann NL, Stuttard T, Sullivan GW, Sutherland M, Taboada I, Tatar J, Tenholt F, Ter-Antonyan S, Terliuk A, Tilav S, Toale PA, Tobin MN, Tönnis C, Toscano S, Tosi D, Tselengidou M, Tung CF, Turcati A, Turley CF, Ty B, Unger E, Usner M, Vandenbroucke J, Van Driessche W, van Eijk D, van Eijndhoven N, Vanheule S, van Santen J, Vraeghe M, Walck C, Wallace A, Wallraff M, Wandler FD, Wandkowsky N, Waza A, Weaver C, Weiss MJ, Wendt C, Werthebach J, Westerhoff S, Whelan BJ, Wiebe K, Wiebusch CH, Wille L, Williams DR, Wills L, Wolf M, Wood J, Wood TR, Woolsey E, Woschnagg K, Wrede G, Xu DL, Xu XW, Xu Y, Yanez JP, Yodh G, Yoshida S, and Yuan T

Abstract

With the observation of high-energy astrophysical neutrinos by the IceCube Neutrino Observatory, interest has risen in models of PeV-mass decaying dark matter particles to explain the observed flux. We present two dedicated experimental analyses to test this hypothesis. One analysis uses 6 years of IceCube data focusing on muon neutrino 'track' events from the Northern Hemisphere, while the second analysis uses 2 years of 'cascade' events from the full sky. Known background components and the hypothetical flux from unstable dark matter are fitted to the experimental data. Since no significant excess is observed in either analysis, lower limits on the lifetime of dark matter particles are derived: we obtain the strongest constraint to date, excluding lifetimes shorter than 10 28 s at 90% CL for dark matter masses above 10 TeV .

Published
2018
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8. Search for patterns by combining cosmic-ray energy and arrival directions at the Pierre Auger Observatory.

Author

Aab A, Abreu P, Aglietta M, Ahn EJ, Samarai IA, Albuquerque IF, Allekotte I, Allen J, Allison P, Almela A, Castillo JA, Alvarez-Muñiz J, Batista RA, Ambrosio M, Aminaei A, Anchordoqui L, Andringa S, Aramo C, Aranda VM, Arqueros F, Asorey H, Assis P, Aublin J, Ave M, Avenier M, Avila G, Awal N, Badescu AM, Barber KB, Bäuml J, Baus C, Beatty JJ, Becker KH, Bellido JA, Berat C, Bertaina ME, Bertou X, Biermann PL, Billoir P, Blaess S, Blanco M, Bleve C, Blümer H, Boháčová M, Boncioli D, Bonifazi C, Bonino R, Borodai N, Brack J, Brancus I, Bridgeman A, Brogueira P, Brown WC, Buchholz P, Bueno A, Buitink S, Buscemi M, Caballero-Mora KS, Caccianiga B, Caccianiga L, Candusso M, Caramete L, Caruso R, Castellina A, Cataldi G, Cazon L, Cester R, Chavez AG, Chiavassa A, Chinellato JA, Chudoba J, Cilmo M, Clay RW, Cocciolo G, Colalillo R, Coleman A, Collica L, Coluccia MR, Conceição R, Contreras F, Cooper MJ, Cordier A, Coutu S, Covault CE, Cronin J, Curutiu A, Dallier R, Daniel B, Dasso S, Daumiller K, Dawson BR, Almeida RM, Domenico M, Jong SJ, Neto JR, Mitri I, Oliveira J, Souza V, Peral LD, Deligny O, Dembinski H, Dhital N, Giulio CD, Matteo AD, Diaz JC, Castro ML, Diogo F, Dobrigkeit C, Docters W, D'Olivo JC, Dorofeev A, Hasankiadeh QD, Dova MT, Ebr J, Engel R, Erdmann M, Erfani M, Escobar CO, Espadanal J, Etchegoyen A, Luis PF, Falcke H, Fang K, Farrar G, Fauth AC, Fazzini N, Ferguson AP, Fernandes M, Fick B, Figueira JM, Filevich A, Filipčič A, Fox BD, Fratu O, Fröhlich U, Fuchs B, Fujii T, Gaior R, García B, Roca ST, Garcia-Gamez D, Garcia-Pinto D, Garilli G, Bravo AG, Gate F, Gemmeke H, Ghia PL, Giaccari U, Giammarchi M, Giller M, Glaser C, Glass H, Berisso MG, Vitale PF, Gonçalves P, Gonzalez JG, González N, Gookin B, Gordon J, Gorgi A, Gorham P, Gouffon P, Grebe S, Griffith N, Grillo AF, Grubb TD, Guarino F, Guedes GP, Hampel MR, Hansen P, Harari D, Harrison TA, Hartmann S, Harton JL, Haungs A, Hebbeker T, Heck D, Heimann P, Herve AE, Hill GC, Hojvat C, Hollon N, Holt E, Homola P, Hörandel JR, Horvath P, Hrabovský M, Huber D, Huege T, Insolia A, Isar PG, Jandt I, Jansen S, Jarne C, Josebachuili M, Kääpä A, Kambeitz O, Kampert KH, Kasper P, Katkov I, Kégl B, Keilhauer B, Keivani A, Kemp E, Kieckhafer RM, Klages HO, Kleifges M, Kleinfeller J, Krause R, Krohm N, Krömer O, Kruppke-Hansen D, Kuempel D, Kunka N, LaHurd D, Latronico L, Lauer R, Lauscher M, Lautridou P, Coz SL, Leão MS, Lebrun D, Lebrun P, Oliveira MA, Letessier-Selvon A, Lhenry-Yvon I, Link K, López R, Agüera AL, Louedec K, Bahilo JL, Lu L, Lucero A, Ludwig M, Malacari M, Maldera S, Mallamaci M, Maller J, Mandat D, Mantsch P, Mariazzi AG, Marin V, Mariş IC, Marsella G, Martello D, Martin L, Martinez H, Bravo OM, Martraire D, Meza JJ, Mathes HJ, Mathys S, Matthews J, Matthews JA, Matthiae G, Maurel D, Maurizio D, Mayotte E, Mazur PO, Medina C, Medina-Tanco G, Meissner R, Melissas M, Melo D, Menshikov A, Messina S, Meyhandan R, Mićanović S, Micheletti MI, Middendorf L, Minaya IA, Miramonti L, Mitrica B, Molina-Bueno L, Mollerach S, Monasor M, Ragaigne DM, Montanet F, Morello C, Mostafá M, Moura CA, Muller MA, Müller G, Müller S, Münchmeyer M, Mussa R, Navarra G, Navas S, Necesal P, Nellen L, Nelles A, Neuser J, Nguyen P, Niechciol M, Niemietz L, Niggemann T, Nitz D, Nosek D, Novotny V, Nožka L, Ochilo L, Olinto A, Oliveira M, Pacheco N, Selmi-Dei DP, Palatka M, Pallotta J, Palmieri N, Papenbreer P, Parente G, Parra A, Paul T, Pech M, Pȩkala J, Pelayo R, Pepe IM, Perrone L, Petermann E, Peters C, Petrera S, Petrov Y, Phuntsok J, Piegaia R, Pierog T, Pieroni P, Pimenta M, Pirronello V, Platino M, Plum M, Porcelli A, Porowski C, Prado RR, Privitera P, Prouza M, Purrello V, Quel EJ, Querchfeld S, Quinn S, Rautenberg J, Ravel O, Ravignani D, Revenu B, Ridky J, Riggi S, Risse M, Ristori P, Rizi V, Carvalho WR, Cabo IR, Fernandez GR, Rojo JR, Rodríguez-Frías MD, Rogozin D, Ros G, Rosado J, Rossler T, Roth M, Roulet E, Rovero AC, Saffi SJ, Saftoiu A, Salamida F, Salazar H, Saleh A, Greus FS, Salina G, Sánchez F, Sanchez-Lucas P, Santo CE, Santos E, Santos EM, Sarazin F, Sarkar B, Sarmento R, Sato R, Scharf N, Scherini V, Schieler H, Schiffer P, Schmidt D, Schröder FG, Scholten O, Schoorlemmer H, Schovánek P, Schulz A, Schulz J, Schumacher J, Sciutto SJ, Segreto A, Settimo M, Shadkam A, Shellard RC, Sidelnik I, Sigl G, Sima O, Kowski AŚ, Šmída R, Snow GR, Sommers P, Sorokin J, Squartini R, Srivastava YN, Stanič S, Stapleton J, Stasielak J, Stephan M, Stutz A, Suarez F, Suomijärvi T, Supanitsky AD, Sutherland MS, Swain J, Szadkowski Z, Szuba M, Taborda OA, Tapia A, Tartare M, Tepe A, Theodoro VM, Timmermans C, Peixoto CJ, Toma G, Tomankova L, Tomé B, Tonachini A, Elipe GT, Machado DT, Travnicek P, Trovato E, Tueros M, Ulrich R, Unger M, Urban M, Galicia JF, Valiño I, Valore L, Aar GV, Bodegom PV, Berg AM, Velzen SV, Vliet AV, Varela E, Vargas Cárdenas B, Varner G, Vázquez JR, Vázquez RA, Veberič D, Verzi V, Vicha J, Videla M, Villaseñor L, Vlcek B, Vorobiov S, Wahlberg H, Wainberg O, Walz D, Watson AA, Weber M, Weidenhaupt K, Weindl A, Werner F, Widom A, Wiencke L, Wilczyńska B, Wilczyński H, Will M, Williams C, Winchen T, Wittkowski D, Wundheiler B, Wykes S, Yamamoto T, Yapici T, Yuan G, Yushkov A, Zamorano B, Zas E, Zavrtanik D, Zavrtanik M, Zaw I, Zepeda A, Zhou J, Zhu Y, Silva MZ, Ziolkowski M, and Zuccarello F

Abstract

Energy-dependent patterns in the arrival directions of cosmic rays are searched for using data of the Pierre Auger Observatory. We investigate local regions around the highest-energy cosmic rays with [Formula: see text] eV by analyzing cosmic rays with energies above [Formula: see text] eV arriving within an angular separation of approximately 15[Formula: see text]. We characterize the energy distributions inside these regions by two independent methods, one searching for angular dependence of energy-energy correlations and one searching for collimation of energy along the local system of principal axes of the energy distribution. No significant patterns are found with this analysis. The comparison of these measurements with astrophysical scenarios can therefore be used to obtain constraints on related model parameters such as strength of cosmic-ray deflection and density of point sources.

Published
2015
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9. Deep-sea bioluminescence blooms after dense water formation at the ocean surface.

Author

Tamburini C, Canals M, Durrieu de Madron X, Houpert L, Lefèvre D, Martini S, D'Ortenzio F, Robert A, Testor P, Aguilar JA, Samarai IA, Albert A, André M, Anghinolfi M, Anton G, Anvar S, Ardid M, Jesus AC, Astraatmadja TL, Aubert JJ, Baret B, Basa S, Bertin V, Biagi S, Bigi A, Bigongiari C, Bogazzi C, Bou-Cabo M, Bouhou B, Bouwhuis MC, Brunner J, Busto J, Camarena F, Capone A, Cârloganu C, Carminati G, Carr J, Cecchini S, Charif Z, Charvis P, Chiarusi T, Circella M, Coniglione R, Costantini H, Coyle P, Curtil C, Decowski P, Dekeyser I, Deschamps A, Donzaud C, Dornic D, Dorosti HQ, Drouhin D, Eberl T, Emanuele U, Ernenwein JP, Escoffier S, Fermani P, Ferri M, Flaminio V, Folger F, Fritsch U, Fuda JL, Galatà S, Gay P, Giacomelli G, Giordano V, Gómez-González JP, Graf K, Guillard G, Halladjian G, Hallewell G, van Haren H, Hartman J, Heijboer AJ, Hello Y, Hernández-Rey JJ, Herold B, Hößl J, Hsu CC, de Jong M, Kadler M, Kalekin O, Kappes A, Katz U, Kavatsyuk O, Kooijman P, Kopper C, Kouchner A, Kreykenbohm I, Kulikovskiy V, Lahmann R, Lamare P, Larosa G, Lattuada D, Lim G, Presti DL, Loehner H, Loucatos S, Mangano S, Marcelin M, Margiotta A, Martinez-Mora JA, Meli A, Montaruli T, Moscoso L, Motz H, Neff M, Nezri EN, Palioselitis D, Păvălaş GE, Payet K, Payre P, Petrovic J, Piattelli P, Picot-Clemente N, Popa V, Pradier T, Presani E, Racca C, Reed C, Riccobene G, Richardt C, Richter R, Rivière C, Roensch K, Rostovtsev A, Ruiz-Rivas J, Rujoiu M, Russo VG, Salesa F, Sánchez-Losa A, Sapienza P, Schöck F, Schuller JP, Schussler F, Shanidze R, Simeone F, Spies A, Spurio M, Steijger JJ, Stolarczyk T, Taiuti MG, Toscano S, Vallage B, Van Elewyck V, Vannoni G, Vecchi M, Vernin P, Wijnker G, Wilms J, de Wolf E, Yepes H, Zaborov D, De Dios Zornoza J, and Zúñiga J

Subjects
Animals, Cell Count, Luminescent Measurements methods, Mediterranean Region, Seasons, Eutrophication physiology, Fluorescence, Oceans and Seas
Abstract

The deep ocean is the largest and least known ecosystem on Earth. It hosts numerous pelagic organisms, most of which are able to emit light. Here we present a unique data set consisting of a 2.5-year long record of light emission by deep-sea pelagic organisms, measured from December 2007 to June 2010 at the ANTARES underwater neutrino telescope in the deep NW Mediterranean Sea, jointly with synchronous hydrological records. This is the longest continuous time-series of deep-sea bioluminescence ever recorded. Our record reveals several weeks long, seasonal bioluminescence blooms with light intensity up to two orders of magnitude higher than background values, which correlate to changes in the properties of deep waters. Such changes are triggered by the winter cooling and evaporation experienced by the upper ocean layer in the Gulf of Lion that leads to the formation and subsequent sinking of dense water through a process known as "open-sea convection". It episodically renews the deep water of the study area and conveys fresh organic matter that fuels the deep ecosystems. Luminous bacteria most likely are the main contributors to the observed deep-sea bioluminescence blooms. Our observations demonstrate a consistent and rapid connection between deep open-sea convection and bathypelagic biological activity, as expressed by bioluminescence. In a setting where dense water formation events are likely to decline under global warming scenarios enhancing ocean stratification, in situ observatories become essential as environmental sentinels for the monitoring and understanding of deep-sea ecosystem shifts.

Published
2013
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