Descriptor: "ANTARES" / Database: OAIster - Searchworks@Jio Institute Digital Library Search Results

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66 results on '"ANTARES"'

1. Hint for a TeV neutrino emission from the Galactic Ridge with ANTARES

Author: Centre Tecnològic de Vilanova i la Geltrú, Universitat Politècnica de Catalunya. LAB - Laboratori d'Aplicacions Bioacústiques, Albert, Arthur, Alves Garre, Sergio, André, Michel, Ardid Ramírez, Miguel, Ardid Ramírez, Joan Salvador, Aubert, J.-J., Aublin, J., Baret, Bruny, Basa, S., Becherini, Y., Belhorma, Bouchra, Bendahman, Meriem, Benfenati, Fabio, Bertin, Vincent, Centre Tecnològic de Vilanova i la Geltrú, Universitat Politècnica de Catalunya. LAB - Laboratori d'Aplicacions Bioacústiques, Albert, Arthur, Alves Garre, Sergio, André, Michel, Ardid Ramírez, Miguel, Ardid Ramírez, Joan Salvador, Aubert, J.-J., Aublin, J., Baret, Bruny, Basa, S., Becherini, Y., Belhorma, Bouchra, Bendahman, Meriem, Benfenati, Fabio, and Bertin, Vincent
Abstract: Interactions of cosmic ray protons, atomic nuclei, and electrons in the interstellar medium in the inner part of the Milky Way produce a ¿-ray flux from the Galactic Ridge. If the ¿-ray emission is dominated by proton and nuclei interactions, a neutrino flux comparable to the ¿-ray flux is expected from the same sky region. Data collected by the ANTARES neutrino telescope are used to constrain the neutrino flux from the Galactic Ridge in the 1-100 TeV energy range. Neutrino events reconstructed both as tracks and showers are considered in the analysis and the selection is optimized for the search of an excess in the region |l| <30¿, |b| <2¿. The expected background in the search region is estimated using an off-zone region with similar sky coverage. Neutrino signal originating from a power-law spectrum with spectral index ranging from ¿=1to 4is simulated in both channels. The observed energy distributions are fitted to constrain the neutrino emission from the Ridge. The energy distributions in the signal region are inconsistent with the background expectation at ~96% confidence level. The mild excess over the background is consistent with a neutrino flux with a power law with a spectral index 2.45+0.22 -0.34and a flux normalization dN¿ dE¿ =4.0+2.7 -2.0 ×10-16GeV-1cm-2s-1sr-1 at 40 TeV reference energy. Such flux is consistent with the expected neutrino signal if the bulk of the observed ¿-ray flux from the Galactic Ridge originates from interactions of cosmic ray protons and nuclei with a power-law spectrum extending well into the PeV energy range., The authors acknowledge the financial support of the funding agencies: Centre National de la Recherche Scientifique (CNRS), Commissariat à l'Énergie Atomique et aux Énergies Alternatives (CEA), Commission Européenne (FEDER fund and Marie Curie Program), Labex UnivEarthS (ANR-10-LABX-0023 and ANR-18-IDEX-0001), Région Alsace (contrat CPER), Région Provence-Alpes-Côte d'Azur, Département du Var and Ville de La Seyne-sur-Mer, France; Bundesministerium für Bildung und Forschung (BMBF), Germany; Istituto Nazionale di Fisica Nucleare (INFN), the European Union's Horizon 2020 research and innovation programme under the Marie Sklodowska-Curie grant agreement No 754496, Italy; Nederlandse Organisatie voor Wetenschappelijk Onderzoek (NWO), the Netherlands; Executive Unit for Financing Higher Education, Research, Development and Innovation (UEFISCDI), Romania; Grants PID2021-124591NB-C41, -C42, -C43 funded by MCIN/AEI/10.13039/501100011033 and, as appropriate, by “ERDF A way of making Europe”, by the “European Union” or by the “European Union NextGenerationEU/PRTR”, Programa de Planes Complementarios I+D+I (refs. ASFAE/2022/023, ASFAE/2022/014), Programa Prometeo (PROMETEO/2020/019) and GenT (refs. CIDEGENT/2018/034, /2019/043, /2020/049. /2021/23) of the Generalitat Valenciana, Junta de Andalucía (ref. P18-FR-5057), EU: MSC program (ref. 101025085), Programa María Zambrano (Spanish Ministry of Universities, funded by the European Union, NextGenerationEU), Spain; Ministry of Higher Education, Scientific Research and Training, Morocco, and the Arab Fund for Economic and Social Development, Kuwait. We also acknowledge the technical support of Ifremer, AIM and Foselev Marine for the sea operation and the CC-IN2P3 for the computing facilities., Peer Reviewed, Article signat per 164 autors/es: A. Albert, S. Alves, M. André, M. Ardid , S. Ardid, J.-J. Aubert, J. Aublin, B. Baret, S. Basa, Y. Becherini, B. Belhorma, M. Bendahman, F. Benfenati, V. Bertin, S. Biagi, M. Bissinger, J. Boumaaza, M. Bouta, M.C. Bouwhuis, H. Brânzaş, R. Bruijn, J. Brunner, J. Busto, B. Caiffi, D. Calvo, S. Campion, A. Capone, L. Caramete, F. Carenini, J. Carr, V. Carretero, S. Celli, L. Cerisy, M. Chabab, T.N. Chau, R. Cherkaoui El Moursli, T. Chiarusi, M. Circella, J.A.B. Coelho, A. Coleiro, R. Coniglione, P. Coyle, A. Creusot, A.F. Díaz, B. De Martino, C. Distefano, I. Di Palma, A. Domi , C. Donzaud, D. Dornic, D. Drouhin, T. Eberl, T. van Eeden, D. van Eijk, S. El Hedri, N. El Khayati, A. Enzenhöfer, M. Fasano, P. Fermani, G. Ferrara, F. Filippini, L. Fusco, S. Gagliardini, J. García, C. Gatius Oliver, P. Gay, N. Geißelbrecht, H. Glotin, R. Gozzini, R. Gracia Ruiz, K. Graf, C. Guidi, L. Haegel, S. Hallmann, H. van Haren, A.J. Heijboer, Y. Hello, J.J. Hernández-Rey, J. Hößl, J. Hofestädt, F. Huang, G. Illuminati, C.W. James, B. Jisse-Jung, M. de Jong, P. de Jong, M. Kadler, O. Kalekin, U. Katz, A. Kouchner, I. Kreykenbohm, V. Kulikovskiy, R. Lahmann, M. Lamoureux, A. Lazo, D. Lefèvre, E. Leonora, G. Levi, S. Le Stum, D. Lopez-Coto, S. Loucatos, L. Maderer, J. Manczak, M. Marcelin, A. Margiotta, A. Marinelli, J.A. Martínez-Mora, P. Migliozzi, A. Moussa, R. Muller, L. Nauta, S. Navas, A. Neronov, E. Nezri, B. Ó Fearraigh, A. Păun, G.E. Păvălaş, M. Perrin-Terrin, V. Pestel, P. Piattelli, C. Poirè, V. Popa, T. Pradier, N. Randazzo, D. Real, S. Reck, G. Riccobene, A. Romanov, A. Sánchez-Losa, A. Saina, F. Salesa Greus, D.F.E. Samtleben, M. Sanguineti, P. Sapienza, D. Savchenko, J. Schnabel, J. Schumann, F. Schüssler, J. Seneca, M. Spurio, Th. Stolarczyk, M. Taiuti, Y. Tayalati, S.J. Tingay, B. Vallage, G. Vannoye, V. Van Elewyck, S. Viola, D. Vivolo, J. Wilms, S. Zavatarelli, A. Zegarelli, J.D. Zornoza, J. Zúñiga., Postprint (published version)
Published: 2023

2. Measurement of the atmospheric νe and νμ energy spectra with the ANTARES neutrino telescope

Author: Centre Tecnològic de Vilanova i la Geltrú, Universitat Politècnica de Catalunya. LAB - Laboratori d'Aplicacions Bioacústiques, Albert, Arnauld, André, Michel, Anghinolfi, Marco, Anton, Gisela, Ardid Ramírez, Miguel, Aubert, J.-J., Aublin, J., Baret, Bruny, Basa, S., Biagi, S., Centre Tecnològic de Vilanova i la Geltrú, Universitat Politècnica de Catalunya. LAB - Laboratori d'Aplicacions Bioacústiques, Albert, Arnauld, André, Michel, Anghinolfi, Marco, Anton, Gisela, Ardid Ramírez, Miguel, Aubert, J.-J., Aublin, J., Baret, Bruny, Basa, S., and Biagi, S.
Abstract: This letter presents a combined measurement of the energy spectra of atmospheric and in the energy range between ~100 GeV and ~50 TeV with the ANTARES neutrino telescope. The analysis uses 3012 days of detector livetime in the period 2007–2017, and selects 1016 neutrinos interacting in (or close to) the instrumented volume of the detector, yielding shower-like events (mainly from charged current plus all neutrino neutral current interactions) and starting track events (mainly from charged current interactions). The contamination by atmospheric muons in the final sample is suppressed at the level of a few per mill by different steps in the selection analysis, including a Boosted Decision Tree classifier. The distribution of reconstructed events is unfolded in terms of electron and muon neutrino fluxes. The derived energy spectra are compared with previous measurements that, above 100 GeV, are limited to experiments in polar ice and, for , to Super-Kamiokande., Peer Reviewed, Postprint (published version)
Published: 2021

3. Measurement of the atmospheric nu(e) and nu(mu) energy spectra with the ANTARES neutrino telescope

Author: Universitat Politècnica de València. Departamento de Física Aplicada - Departament de Física Aplicada, Junta de Andalucía, Region Ile-de-France, GENERALITAT VALENCIANA, Conseil régional du Grand Est, AGENCIA ESTATAL DE INVESTIGACION, Institut Universitaire de France, Université Sorbonne Paris Cité, Agencia Estatal de Investigación, European Regional Development Fund, Instituto Nazionale di Fisica Nucleare, Agence Nationale de la Recherche, Francia, Conseil Régional Provence-Alpes-Côte d'Azur, Netherlands Organization for Scientific Research, Centre National de la Recherche Scientifique, Francia, Bundesministerium für Bildung und Forschung, Alemania, Consiliul National pentru Finantarea Invatamantului Superior, Council on grants of the President of the Russian Federation, Commissariat à l'Énergie Atomique et aux Énergies Alternatives, Francia, Ministère de l'Enseignement Supérieur, de la Recherche Scientifique et de la Formation des Cadres, Albert, A., Alves, S., Andre, M., Anghinolfi, M., Anton, G., Ardid Ramírez, Miguel, Aubert, J-J., Aublin, J., Baret, B., Basa, S., Belhorma, B., Bendahman, M., Bertin, V., Biagi, S., Bissinger, M., J. A. Martínez Mora, Poirè, Chiara, Universitat Politècnica de València. Departamento de Física Aplicada - Departament de Física Aplicada, Junta de Andalucía, Region Ile-de-France, GENERALITAT VALENCIANA, Conseil régional du Grand Est, AGENCIA ESTATAL DE INVESTIGACION, Institut Universitaire de France, Université Sorbonne Paris Cité, Agencia Estatal de Investigación, European Regional Development Fund, Instituto Nazionale di Fisica Nucleare, Agence Nationale de la Recherche, Francia, Conseil Régional Provence-Alpes-Côte d'Azur, Netherlands Organization for Scientific Research, Centre National de la Recherche Scientifique, Francia, Bundesministerium für Bildung und Forschung, Alemania, Consiliul National pentru Finantarea Invatamantului Superior, Council on grants of the President of the Russian Federation, Commissariat à l'Énergie Atomique et aux Énergies Alternatives, Francia, Ministère de l'Enseignement Supérieur, de la Recherche Scientifique et de la Formation des Cadres, Albert, A., Alves, S., Andre, M., Anghinolfi, M., Anton, G., Ardid Ramírez, Miguel, Aubert, J-J., Aublin, J., Baret, B., Basa, S., Belhorma, B., Bendahman, M., Bertin, V., Biagi, S., Bissinger, M., J. A. Martínez Mora, and Poirè, Chiara
Abstract: [EN] This letter presents a combined measurement of the energy spectra of atmospheric nu(e) and nu(mu) in the energy range between similar to 100 GeV and similar to 50 TeV with the ANTARES neutrino telescope. The analysis uses 3012 days of detector livetime in the period 2007-2017, and selects 1016 neutrinos interacting in (or close to) the instrumented volume of the detector, yielding shower-like events (mainly from nu(e) + (nu) over bar (e) charged current plus all neutrino neutral current interactions) and starting track events (mainly from nu(mu) + (nu) over bar (mu) charged current interactions). The contamination by atmospheric muons in the final sample is suppressed at the level of a few per mill by different steps in the selection analysis, including a Boosted Decision Tree classifier. The distribution of reconstructed events is unfolded in terms of electron and muon neutrino fluxes. The derived energy spectra are compared with previous measurements that, above 100 GeV, are limited to experiments in polar ice and, for nu(mu), to Super-Kamiokande. (C) 2021 The Author(s). Published by Elsevier B.V.
Published: 2021

4. Measurement of the atmospheric nu(e) and nu(mu) energy spectra with the ANTARES neutrino telescope

Author: Universitat Politècnica de València. Departamento de Física Aplicada - Departament de Física Aplicada, Junta de Andalucía, Region Ile-de-France, GENERALITAT VALENCIANA, Conseil régional du Grand Est, AGENCIA ESTATAL DE INVESTIGACION, Institut Universitaire de France, Université Sorbonne Paris Cité, Agencia Estatal de Investigación, European Regional Development Fund, Instituto Nazionale di Fisica Nucleare, Agence Nationale de la Recherche, Francia, Conseil Régional Provence-Alpes-Côte d'Azur, Netherlands Organization for Scientific Research, Centre National de la Recherche Scientifique, Francia, Bundesministerium für Bildung und Forschung, Alemania, Consiliul National pentru Finantarea Invatamantului Superior, Council on grants of the President of the Russian Federation, Commissariat à l'Énergie Atomique et aux Énergies Alternatives, Francia, Ministère de l'Enseignement Supérieur, de la Recherche Scientifique et de la Formation des Cadres, Albert, A., Alves, S., Andre, M., Anghinolfi, M., Anton, G., Ardid Ramírez, Miguel, Aubert, J-J., Aublin, J., Baret, B., Basa, S., Belhorma, B., Bendahman, M., Bertin, V., Biagi, S., Bissinger, M., J. A. Martínez Mora, Poirè, Chiara, Universitat Politècnica de València. Departamento de Física Aplicada - Departament de Física Aplicada, Junta de Andalucía, Region Ile-de-France, GENERALITAT VALENCIANA, Conseil régional du Grand Est, AGENCIA ESTATAL DE INVESTIGACION, Institut Universitaire de France, Université Sorbonne Paris Cité, Agencia Estatal de Investigación, European Regional Development Fund, Instituto Nazionale di Fisica Nucleare, Agence Nationale de la Recherche, Francia, Conseil Régional Provence-Alpes-Côte d'Azur, Netherlands Organization for Scientific Research, Centre National de la Recherche Scientifique, Francia, Bundesministerium für Bildung und Forschung, Alemania, Consiliul National pentru Finantarea Invatamantului Superior, Council on grants of the President of the Russian Federation, Commissariat à l'Énergie Atomique et aux Énergies Alternatives, Francia, Ministère de l'Enseignement Supérieur, de la Recherche Scientifique et de la Formation des Cadres, Albert, A., Alves, S., Andre, M., Anghinolfi, M., Anton, G., Ardid Ramírez, Miguel, Aubert, J-J., Aublin, J., Baret, B., Basa, S., Belhorma, B., Bendahman, M., Bertin, V., Biagi, S., Bissinger, M., J. A. Martínez Mora, and Poirè, Chiara
Abstract: [EN] This letter presents a combined measurement of the energy spectra of atmospheric nu(e) and nu(mu) in the energy range between similar to 100 GeV and similar to 50 TeV with the ANTARES neutrino telescope. The analysis uses 3012 days of detector livetime in the period 2007-2017, and selects 1016 neutrinos interacting in (or close to) the instrumented volume of the detector, yielding shower-like events (mainly from nu(e) + (nu) over bar (e) charged current plus all neutrino neutral current interactions) and starting track events (mainly from nu(mu) + (nu) over bar (mu) charged current interactions). The contamination by atmospheric muons in the final sample is suppressed at the level of a few per mill by different steps in the selection analysis, including a Boosted Decision Tree classifier. The distribution of reconstructed events is unfolded in terms of electron and muon neutrino fluxes. The derived energy spectra are compared with previous measurements that, above 100 GeV, are limited to experiments in polar ice and, for nu(mu), to Super-Kamiokande. (C) 2021 The Author(s). Published by Elsevier B.V.
Published: 2021

5. Indirect dark matter searches with neutrinos from the Galactic Centre region with the ANTARES and KM3NeT telescopes

Author: Centre Tecnològic de Vilanova i la Geltrú, Universitat Politècnica de Catalunya. LAB - Laboratori d'Aplicacions Bioacústiques, Ageron, M., Aiello, S, Aublin, J., Alshamsi, Mohammed, Alves Garre, Sergio, André, Michel, Anghinolfi, Marco, Anton, Gisela, Ardid Ramírez, Miguel, Albert, Arthur, Belhorma, Bouchra, Bendahman, Meriem, Bertin, Vincent, Bissinger, Matthias, Boumaaza, Jihad, Centre Tecnològic de Vilanova i la Geltrú, Universitat Politècnica de Catalunya. LAB - Laboratori d'Aplicacions Bioacústiques, Ageron, M., Aiello, S, Aublin, J., Alshamsi, Mohammed, Alves Garre, Sergio, André, Michel, Anghinolfi, Marco, Anton, Gisela, Ardid Ramírez, Miguel, Albert, Arthur, Belhorma, Bouchra, Bendahman, Meriem, Bertin, Vincent, Bissinger, Matthias, and Boumaaza, Jihad
Abstract: An anomalous flux of neutrinos produced in hypothetical annihilations or decays of dark matter inside a source would produce a signal observable with neutrino telescopes. As suggested by observations, a conspicuous amount of dark matter is believed to accumulate in the centre of our Galaxy, which is in neat visibility for the Mediterranean underwater telescopes ANTARES and KM3NeT. Searches have been conducted with a maximum likelihood method to identify the presence of a dark matter signature in the neutrino flux measured by ANTARES. Results of all-flavour searches for WIMPs with masses from 50 GeV/c2 up to 100 TeV/c2 over the whole operation period from 2007 to 2020 are presented here. Alternative scenarios which propose a dark matter candidate in the heavy sector extensions of the Standard Model would produce a clear signature in the ANTARES telescope, that can exploit its view of the Galactic Centre up to high energies. The presentation of Galactic Centre searches is completed with ongoing analyses and future potential of the KM3NeT telescope, in phased construction in the Mediterranean Sea, Article signat per 297 autors/es: M.Ageron, S. Aiello, A. Albert, M. Alshamsi, S. Alves Garre, Z. Aly, A. Ambrosone, F. Ameli, M. Andre, G. Androulakis, M. Anghinolfi, M. Anguita, G. Anton, M. Ardid, S. Ardid, W. Assal, J. Aublin, C. Bagatelas, B. Baret, S. Basegmez du Pree, M. Bendahman, F. Benfenati, E. Berbee, A. M. van den Berg, V. Bertin, S. Beurthey, V. van Beveren, S. Biagi, M. Billault, M. Bissinger, M. Boettcher, M. Bou Cabo, J. Boumaaza, M. Bouta, C. Boutonnet, G. Bouvet, M. Bouwhuis, C. Bozza, H.Brânzas, R. Bruijn, J. Brunner, R. Bruno, E. Buis, R. Buompane, J. Busto, B. Caiffi, L. Caillat, D. Calvo, S. Campion, A. Capone, H. Carduner, V. Carretero, P. Castaldi, S. Celli;, R. Cereseto, M. Chabab, C. Champion, N. Chau, A. Chen, S. Cherubini, V. Chiarella, T. Chiarusi, M. Circella, R. Cocimano, J. A. B. Coelho, A. Coleiro, M. Colomer Molla, S. Colonges, R. Coniglione, A. Cosquer, P. Coyle, M. Cresta, A. Creuso, A. Cruz, G. Cuttone, A. D’Amico, R. Dallier, B. De Martino, M. De Palma, I. Di Palma, A. F. Díaz, D. Diego- Tortosa, C. Distefano, A. Domi, C. Donzaud, D. Dornic, M. Dörr, D. Drouhin, T. Eberl, A. Eddyamoui, T. van Eeden, D. van Eijk, I. El Bojaddaini, H. Eljarrari, D. Elsaesser, A. Enzenhöfer, V. Espinosa, P. Fermani, G. Ferrara, M. D. Filipovic, F. Filippini, J. Fransen, L. A. Fusco, D. Gajanana, T. Gal, J. García Méndez, A. Garcia Soto, E. Garçon, F. Garufi, C. Gatius, N. Geißelbrecht, L. Gialanella, E. Giorgio, S. R. Gozzini, R. Gracia, K. Graf, G. Grella, D. Guderian, C. Guidi, B. Guillon, M. Gutiérrez, J. Haefner, S. Hallmann, H. Hamdaoui, H. van Haren, A. Heijboer, A. Hekalo, L. Hennig, S. Henry, J. J. Hernández-Rey, J. Hofestädt, F. Huang,W. Idrissi Ibnsalih, A. Ilioni, G. Illuminati, C.W. James, D. Janezashvili, P. Jansweijer, M. de Jong, P. de Jong, B. J. Jung, M. Kadler, P. Kalaczynski, O. Kalekin,U. F. Katz, F. Kayzel, P.Keller, N. R. Khan Chowdhury, G. Kistauri, F. van der Knaap, P. Kooijman, A. Kouchner, M. Kreter, V. Kulikovskiy, M. La, Postprint (published version)
Published: 2021

6. Search for relativistic Magnetic Monopoles with ten years of the ANTARES detector data

Author: Centre Tecnològic de Vilanova i la Geltrú, Universitat Politècnica de Catalunya. LAB - Laboratori d'Aplicacions Bioacústiques, Boumaaza, Jihad, Albert, Arthur, André, Michel, Ardid Ramírez, Miguel, Ardid Ramírez, Joan Salvador, Aubert, J.-J., Aublin, J., Baret, B., Basa, S., Belhorma, Bouchra, Bendahman, Meriem, Benfenati, Fabio, Bertin, Vincent, Centre Tecnològic de Vilanova i la Geltrú, Universitat Politècnica de Catalunya. LAB - Laboratori d'Aplicacions Bioacústiques, Boumaaza, Jihad, Albert, Arthur, André, Michel, Ardid Ramírez, Miguel, Ardid Ramírez, Joan Salvador, Aubert, J.-J., Aublin, J., Baret, B., Basa, S., Belhorma, Bouchra, Bendahman, Meriem, Benfenati, Fabio, and Bertin, Vincent
Abstract: The presented study is an updated search for magnetic monopoles using data taken with the ANTARES neutrino telescope over a period of 10 years (January 2008 to December 2017). In accordance with some grand unification theories, magnetic monopoles were created during the phase of symmetry breaking in the early Universe, and accelerated by galactic magnetic fields. As a consequence of their high energy, they could cross the Earth and emit a significant signal in a Cherenkov-based telescope like ANTARES, for appropriate mass and velocity ranges. This analysis uses a run-by-run simulation strategy, as well as a new simulation of magnetic monopoles taking into account the Kasama, Yang and Goldhaber model for their cross section with matter. The results obtained for relativistic magnetic monopoles with ß = v / c = 0.57, where v is the magnetic monopole velocity and c the speed of light in vacuum, are presented., Postprint (published version)
Published: 2021

7. Search for an association between neutrinos and radio-selected blazars with ANTARES

Author: Centre Tecnològic de Vilanova i la Geltrú, Universitat Politècnica de Catalunya. LAB - Laboratori d'Aplicacions Bioacústiques, Aublin, J., André, Michel, Anghinolfi, Marco, Anton, Gisela, Ardid Ramírez, Joan Salvador, Aubert, J.-J., Baret, Bruny, Basa, S., Belhorma, Bouchra, Bendahman, Meriem, Bertin, Vincent, Biagi, S., Centre Tecnològic de Vilanova i la Geltrú, Universitat Politècnica de Catalunya. LAB - Laboratori d'Aplicacions Bioacústiques, Aublin, J., André, Michel, Anghinolfi, Marco, Anton, Gisela, Ardid Ramírez, Joan Salvador, Aubert, J.-J., Baret, Bruny, Basa, S., Belhorma, Bouchra, Bendahman, Meriem, Bertin, Vincent, and Biagi, S.
Abstract: Recently, evidence for an association between high energy neutrinos detected by IceCube and radio-selected blazars has been found by Plavin et al.(2020, 2021). This result wa.s achieved using an all sky complete sample of 3411 blazars selected on their parsec-scale flux density at 8 GHz higher than 150 mJy. We perform a positional correlation analysis using the same sample of radioselected blazars, with the latest point source sample of neutrinos extracted from the data collected by the ANTARES detector between January 29, 2007 and February 28, 2020. Preliminary results are presented and discussed, Postprint (published version)
Published: 2021

8. Atmospheric neutrinos with the first detection units of KM3NeT/ARCA

Author: Centre Tecnològic de Vilanova i la Geltrú, Universitat Politècnica de Catalunya. LAB - Laboratori d'Aplicacions Bioacústiques, Coniglione, R., Markou, Christos, Müller, R R, Tzamariudaki, Ekaterini, Ageron, M., Aiello, S, Albert, Arthur, Alshamsi, Mohammed, Alves Garre, Sergio, Aly, Zineb, Ambrosone, Antonio, Ameli, Fabrizio, André, Michel, Androulakis, Giorgos, Anghinolfi, Marco, Anton, Gisela, Ardid Ramírez, Miguel, Centre Tecnològic de Vilanova i la Geltrú, Universitat Politècnica de Catalunya. LAB - Laboratori d'Aplicacions Bioacústiques, Coniglione, R., Markou, Christos, Müller, R R, Tzamariudaki, Ekaterini, Ageron, M., Aiello, S, Albert, Arthur, Alshamsi, Mohammed, Alves Garre, Sergio, Aly, Zineb, Ambrosone, Antonio, Ameli, Fabrizio, André, Michel, Androulakis, Giorgos, Anghinolfi, Marco, Anton, Gisela, and Ardid Ramírez, Miguel
Abstract: The KM3NeT Collaboration is constructing two deep-sea Cherenkov detectors in the Mediterranean Sea, aiming at neutrino oscillation measurements with the ORCA array, while the ARCA array aims at neutrino astronomy in the TeV range. In April 2021, 5 additional detection units were deployed in the ARCA site. The KM3NeT/ARCA instrumented volume is currently similar to the one of the ANTARES neutrino telescope. In this contribution, an analysis of the data obtained with the detector before April 2021 is presented as well as the analysis of the very first data from the new KM3NeT/ARCA configuration. The performance is demonstrated using atmospheric muons and the first atmospheric neutrinos are shown., Article signat per 297 autors/es: M.Ageron, S. Aiello, A. Albert, M. Alshamsi, S. Alves Garre, Z. Aly, A. Ambrosone, F. Ameli, M. Andre, G. Androulakis, M. Anghinolfi, M. Anguita, G. Anton, M. Ardid, S. Ardid, W. Assal, J. Aublin, C. Bagatelas, B. Baret, S. Basegmez du Pree, M. Bendahman, F. Benfenati, E. Berbee, A. M. van den Berg, V. Bertin, S. Beurthey, V. van Beveren, S. Biagi, M. Billault, M. Bissinger, M. Boettcher, M. Bou Cabo, J. Boumaaza, M. Bouta, C. Boutonnet, G. Bouvet, M. Bouwhuis, C. Bozza, H.Brânzas, R. Bruijn, J. Brunner, R. Bruno, E. Buis, R. Buompane, J. Busto, B. Caiffi, L. Caillat, D. Calvo, S. Campion, A. Capone, H. Carduner, V. Carretero, P. Castaldi, S. Celli;, R. Cereseto, M. Chabab, C. Champion, N. Chau, A. Chen, S. Cherubini, V. Chiarella, T. Chiarusi, M. Circella, R. Cocimano, J. A. B. Coelho, A. Coleiro, M. Colomer Molla, S. Colonges, R. Coniglione, A. Cosquer, P. Coyle, M. Cresta, A. Creuso, A. Cruz, G. Cuttone, A. D’Amico, R. Dallier, B. De Martino, M. De Palma, I. Di Palma, A. F. Díaz, D. Diego- Tortosa, C. Distefano, A. Domi, C. Donzaud, D. Dornic, M. Dörr, D. Drouhin, T. Eberl, A. Eddyamoui, T. van Eeden, D. van Eijk, I. El Bojaddaini, H. Eljarrari, D. Elsaesser, A. Enzenhöfer, V. Espinosa, P. Fermani, G. Ferrara, M. D. Filipovic, F. Filippini, J. Fransen, L. A. Fusco, D. Gajanana, T. Gal, J. García Méndez, A. Garcia Soto, E. Garçon, F. Garufi, C. Gatius, N. Geißelbrecht, L. Gialanella, E. Giorgio, S. R. Gozzini, R. Gracia, K. Graf, G. Grella, D. Guderian, C. Guidi, B. Guillon, M. Gutiérrez, J. Haefner, S. Hallmann, H. Hamdaoui, H. van Haren, A. Heijboer, A. Hekalo, L. Hennig, S. Henry, J. J. Hernández-Rey, J. Hofestädt, F. Huang,W. Idrissi Ibnsalih, A. Ilioni, G. Illuminati, C.W. James, D. Janezashvili, P. Jansweijer, M. de Jong, P. de Jong, B. J. Jung, M. Kadler, P. Kalaczynski, O. Kalekin,U. F. Katz, F. Kayzel, P.Keller, N. R. Khan Chowdhury, G. Kistauri, F. van der Knaap, P. Kooijman, A. Kouchner, M. Kreter, V. Kulikovskiy, M. La, Postprint (published version)
Published: 2021

9. Search for dark matter towards the Galactic Centre with 11 years of ANTARES data

Author: Universitat Politècnica de València. Instituto de Investigación para la Gestión Integral de Zonas Costeras - Institut d'Investigació per a la Gestió Integral de Zones Costaneres, Universitat Politècnica de València. Departamento de Física Aplicada - Departament de Física Aplicada, A*Midex Foundation, Junta de Andalucía, Region Ile-de-France, GENERALITAT VALENCIANA, Conseil régional du Grand Est, AGENCIA ESTATAL DE INVESTIGACION, Institut Universitaire de France, Agencia Estatal de Investigación, European Regional Development Fund, Instituto Nazionale di Fisica Nucleare, Agence Nationale de la Recherche, Francia, Conseil Régional Provence-Alpes-Côte d'Azur, Netherlands Organization for Scientific Research, Centre National de la Recherche Scientifique, Francia, Bundesministerium für Bildung und Forschung, Alemania, Council on grants of the President of the Russian Federation, Commissariat à l'Énergie Atomique et aux Énergies Alternatives, Francia, Laboratoire d'Excellence OCEVU (Origines, Constituants & ÉVolution de l'Univers), Ministère de l'Enseignement Supérieur, de la Recherche Scientifique et de la Formation des Cadres, Executive Agency for Higher Education, Scientific Research, Development and Innovation Funding, Rumanía, Albert, A., Andre, M., Anghinolfi, M., Anton, G., Ardid Ramírez, Miguel, Aubert, J-J., Aublin, J., Baret, B., Basa, S., Belhorma, B., Bertin, V., Biagi, S., Bissinger, M., Boumaaza, J., Bourret, S., Martínez Mora, Juan Antonio, Poirè, Chiara, Universitat Politècnica de València. Instituto de Investigación para la Gestión Integral de Zonas Costeras - Institut d'Investigació per a la Gestió Integral de Zones Costaneres, Universitat Politècnica de València. Departamento de Física Aplicada - Departament de Física Aplicada, A*Midex Foundation, Junta de Andalucía, Region Ile-de-France, GENERALITAT VALENCIANA, Conseil régional du Grand Est, AGENCIA ESTATAL DE INVESTIGACION, Institut Universitaire de France, Agencia Estatal de Investigación, European Regional Development Fund, Instituto Nazionale di Fisica Nucleare, Agence Nationale de la Recherche, Francia, Conseil Régional Provence-Alpes-Côte d'Azur, Netherlands Organization for Scientific Research, Centre National de la Recherche Scientifique, Francia, Bundesministerium für Bildung und Forschung, Alemania, Council on grants of the President of the Russian Federation, Commissariat à l'Énergie Atomique et aux Énergies Alternatives, Francia, Laboratoire d'Excellence OCEVU (Origines, Constituants & ÉVolution de l'Univers), Ministère de l'Enseignement Supérieur, de la Recherche Scientifique et de la Formation des Cadres, Executive Agency for Higher Education, Scientific Research, Development and Innovation Funding, Rumanía, Albert, A., Andre, M., Anghinolfi, M., Anton, G., Ardid Ramírez, Miguel, Aubert, J-J., Aublin, J., Baret, B., Basa, S., Belhorma, B., Bertin, V., Biagi, S., Bissinger, M., Boumaaza, J., Bourret, S., Martínez Mora, Juan Antonio, and Poirè, Chiara
Abstract: [EN] Neutrino detectors participate in the indirect search for the fundamental constituents of dark matter (DM) in form of weakly interacting massive particles (WIMPs). In WIMP scenarios, candidate DM particles can pair-annihilate into Standard Model products, yielding considerable ¿uxes of high-energy neutrinos. A detector like ANTARES, located in the Northern Hemisphere, is able to perform a complementary search looking towards the Galactic Centre, where a high density of dark matter is thought to accumulate. Both this directional information and the spectral features of annihilating DM pairs are entered into an unbinned likelihood method to scan the data set in search for DM-like signals in ANTARES data. Results obtained upon unblinding 3170 days of data reconstructed with updated methods are presented, which provides a larger, and more accurate, data set than a previously published result using 2101 days. A non-observation of dark matter is converted into limits on the velocity-averaged cross section for WIMP pair annihilation.
Published: 2020

10. Search for dark matter towards the Galactic Centre with 11 years of ANTARES data

Author: Universitat Politècnica de València. Instituto de Investigación para la Gestión Integral de Zonas Costeras - Institut d'Investigació per a la Gestió Integral de Zones Costaneres, Universitat Politècnica de València. Departamento de Física Aplicada - Departament de Física Aplicada, A*Midex Foundation, Junta de Andalucía, Region Ile-de-France, GENERALITAT VALENCIANA, Conseil régional du Grand Est, AGENCIA ESTATAL DE INVESTIGACION, Institut Universitaire de France, Agencia Estatal de Investigación, European Regional Development Fund, Instituto Nazionale di Fisica Nucleare, Agence Nationale de la Recherche, Francia, Conseil Régional Provence-Alpes-Côte d'Azur, Netherlands Organization for Scientific Research, Centre National de la Recherche Scientifique, Francia, Bundesministerium für Bildung und Forschung, Alemania, Council on grants of the President of the Russian Federation, Commissariat à l'Énergie Atomique et aux Énergies Alternatives, Francia, Laboratoire d'Excellence OCEVU (Origines, Constituants & ÉVolution de l'Univers), Ministère de l'Enseignement Supérieur, de la Recherche Scientifique et de la Formation des Cadres, Executive Agency for Higher Education, Scientific Research, Development and Innovation Funding, Rumanía, Albert, A., Andre, M., Anghinolfi, M., Anton, G., Ardid Ramírez, Miguel, Aubert, J-J., Aublin, J., Baret, B., Basa, S., Belhorma, B., Bertin, V., Biagi, S., Bissinger, M., Boumaaza, J., Bourret, S., Martínez Mora, Juan Antonio, Poirè, Chiara, Universitat Politècnica de València. Instituto de Investigación para la Gestión Integral de Zonas Costeras - Institut d'Investigació per a la Gestió Integral de Zones Costaneres, Universitat Politècnica de València. Departamento de Física Aplicada - Departament de Física Aplicada, A*Midex Foundation, Junta de Andalucía, Region Ile-de-France, GENERALITAT VALENCIANA, Conseil régional du Grand Est, AGENCIA ESTATAL DE INVESTIGACION, Institut Universitaire de France, Agencia Estatal de Investigación, European Regional Development Fund, Instituto Nazionale di Fisica Nucleare, Agence Nationale de la Recherche, Francia, Conseil Régional Provence-Alpes-Côte d'Azur, Netherlands Organization for Scientific Research, Centre National de la Recherche Scientifique, Francia, Bundesministerium für Bildung und Forschung, Alemania, Council on grants of the President of the Russian Federation, Commissariat à l'Énergie Atomique et aux Énergies Alternatives, Francia, Laboratoire d'Excellence OCEVU (Origines, Constituants & ÉVolution de l'Univers), Ministère de l'Enseignement Supérieur, de la Recherche Scientifique et de la Formation des Cadres, Executive Agency for Higher Education, Scientific Research, Development and Innovation Funding, Rumanía, Albert, A., Andre, M., Anghinolfi, M., Anton, G., Ardid Ramírez, Miguel, Aubert, J-J., Aublin, J., Baret, B., Basa, S., Belhorma, B., Bertin, V., Biagi, S., Bissinger, M., Boumaaza, J., Bourret, S., Martínez Mora, Juan Antonio, and Poirè, Chiara
Abstract: [EN] Neutrino detectors participate in the indirect search for the fundamental constituents of dark matter (DM) in form of weakly interacting massive particles (WIMPs). In WIMP scenarios, candidate DM particles can pair-annihilate into Standard Model products, yielding considerable ¿uxes of high-energy neutrinos. A detector like ANTARES, located in the Northern Hemisphere, is able to perform a complementary search looking towards the Galactic Centre, where a high density of dark matter is thought to accumulate. Both this directional information and the spectral features of annihilating DM pairs are entered into an unbinned likelihood method to scan the data set in search for DM-like signals in ANTARES data. Results obtained upon unblinding 3170 days of data reconstructed with updated methods are presented, which provides a larger, and more accurate, data set than a previously published result using 2101 days. A non-observation of dark matter is converted into limits on the velocity-averaged cross section for WIMP pair annihilation.
Published: 2020

11. Search for dark matter towards the Galactic Centre with 11 years of ANTARES data

Author: Universitat Politècnica de València. Instituto de Investigación para la Gestión Integral de Zonas Costeras - Institut d'Investigació per a la Gestió Integral de Zones Costaneres, Universitat Politècnica de València. Departamento de Física Aplicada - Departament de Física Aplicada, A*Midex Foundation, Junta de Andalucía, Region Ile-de-France, GENERALITAT VALENCIANA, Conseil régional du Grand Est, AGENCIA ESTATAL DE INVESTIGACION, Institut Universitaire de France, Agencia Estatal de Investigación, European Regional Development Fund, Instituto Nazionale di Fisica Nucleare, Agence Nationale de la Recherche, Francia, Conseil Régional Provence-Alpes-Côte d'Azur, Netherlands Organization for Scientific Research, Centre National de la Recherche Scientifique, Francia, Bundesministerium für Bildung und Forschung, Alemania, Council on grants of the President of the Russian Federation, Commissariat à l'Énergie Atomique et aux Énergies Alternatives, Francia, Laboratoire d'Excellence OCEVU (Origines, Constituants & ÉVolution de l'Univers), Ministère de l'Enseignement Supérieur, de la Recherche Scientifique et de la Formation des Cadres, Executive Agency for Higher Education, Scientific Research, Development and Innovation Funding, Rumanía, Albert, A., Andre, M., Anghinolfi, M., Anton, G., Ardid Ramírez, Miguel, Aubert, J-J., Aublin, J., Baret, B., Basa, S., Belhorma, B., Bertin, V., Biagi, S., Bissinger, M., Boumaaza, J., Bourret, S., Martínez Mora, Juan Antonio, Poirè, Chiara, Universitat Politècnica de València. Instituto de Investigación para la Gestión Integral de Zonas Costeras - Institut d'Investigació per a la Gestió Integral de Zones Costaneres, Universitat Politècnica de València. Departamento de Física Aplicada - Departament de Física Aplicada, A*Midex Foundation, Junta de Andalucía, Region Ile-de-France, GENERALITAT VALENCIANA, Conseil régional du Grand Est, AGENCIA ESTATAL DE INVESTIGACION, Institut Universitaire de France, Agencia Estatal de Investigación, European Regional Development Fund, Instituto Nazionale di Fisica Nucleare, Agence Nationale de la Recherche, Francia, Conseil Régional Provence-Alpes-Côte d'Azur, Netherlands Organization for Scientific Research, Centre National de la Recherche Scientifique, Francia, Bundesministerium für Bildung und Forschung, Alemania, Council on grants of the President of the Russian Federation, Commissariat à l'Énergie Atomique et aux Énergies Alternatives, Francia, Laboratoire d'Excellence OCEVU (Origines, Constituants & ÉVolution de l'Univers), Ministère de l'Enseignement Supérieur, de la Recherche Scientifique et de la Formation des Cadres, Executive Agency for Higher Education, Scientific Research, Development and Innovation Funding, Rumanía, Albert, A., Andre, M., Anghinolfi, M., Anton, G., Ardid Ramírez, Miguel, Aubert, J-J., Aublin, J., Baret, B., Basa, S., Belhorma, B., Bertin, V., Biagi, S., Bissinger, M., Boumaaza, J., Bourret, S., Martínez Mora, Juan Antonio, and Poirè, Chiara
Abstract: [EN] Neutrino detectors participate in the indirect search for the fundamental constituents of dark matter (DM) in form of weakly interacting massive particles (WIMPs). In WIMP scenarios, candidate DM particles can pair-annihilate into Standard Model products, yielding considerable ¿uxes of high-energy neutrinos. A detector like ANTARES, located in the Northern Hemisphere, is able to perform a complementary search looking towards the Galactic Centre, where a high density of dark matter is thought to accumulate. Both this directional information and the spectral features of annihilating DM pairs are entered into an unbinned likelihood method to scan the data set in search for DM-like signals in ANTARES data. Results obtained upon unblinding 3170 days of data reconstructed with updated methods are presented, which provides a larger, and more accurate, data set than a previously published result using 2101 days. A non-observation of dark matter is converted into limits on the velocity-averaged cross section for WIMP pair annihilation.
Published: 2020

12. Search for dark matter towards the Galactic Centre with 11 years of ANTARES data

Author: Centre Tecnològic de Vilanova i la Geltrú, Universitat Politècnica de Catalunya. LAB - Laboratori d'Aplicacions Bioacústiques, Albert, A., André, Michel, Anghinolfi, Marco, Anton, Gisela, Ardid Ramírez, Miguel, Aubert, J.-J., Aublin, J., Baret, B., Basa, Stéphane, Centre Tecnològic de Vilanova i la Geltrú, Universitat Politècnica de Catalunya. LAB - Laboratori d'Aplicacions Bioacústiques, Albert, A., André, Michel, Anghinolfi, Marco, Anton, Gisela, Ardid Ramírez, Miguel, Aubert, J.-J., Aublin, J., Baret, B., and Basa, Stéphane
Abstract: Neutrino detectors participate in the indirect search for the fundamental constituents of dark matter (DM) in form of weakly interacting massive particles (WIMPs). In WIMP scenarios, candidate DM particles can pair-annihilate into Standard Model products, yielding considerable fluxes of high-energy neutrinos. A detector like ANTARES, located in the Northern Hemisphere, is able to perform a complementary search looking towards the Galactic Centre, where a high density of dark matter is thought to accumulate. Both this directional information and the spectral features of annihilating DM pairs are entered into an unbinned likelihood method to scan the data set in search for DM-like signals in ANTARES data. Results obtained upon unblinding 3170 days of data reconstructed with updated methods are presented, which provides a larger, and more accurate, data set than a previously published result using 2101 days. A non-observation of dark matter is converted into limits on the velocity-averaged cross section for WIMP pair annihilation., Peer Reviewed, Postprint (published version)
Published: 2020

13. Results from the search for dark matter in the Milky Way with 9 years of data of the ANTARES neutrino telescope

Author: Universitat Politècnica de València. Departamento de Física Aplicada - Departament de Física Aplicada, Universitat Politècnica de València. Instituto de Investigación para la Gestión Integral de Zonas Costeras - Institut d'Investigació per a la Gestió Integral de Zones Costaneres, Ministerio de Ciencia e Innovación, Albert, A., Andre, M., Anghinolfi, M., Anton, G., Ardid Ramírez, Miguel, Aubert, J.J., Avgitas, T., Baret, B., Barrios-Marti, J., Basa, S., Bertin, V., Biagi, S., Felis-Enguix, Iván, Martínez Mora, Juan Antonio, Saldaña-Coscollar, María, Universitat Politècnica de València. Departamento de Física Aplicada - Departament de Física Aplicada, Universitat Politècnica de València. Instituto de Investigación para la Gestión Integral de Zonas Costeras - Institut d'Investigació per a la Gestió Integral de Zones Costaneres, Ministerio de Ciencia e Innovación, Albert, A., Andre, M., Anghinolfi, M., Anton, G., Ardid Ramírez, Miguel, Aubert, J.J., Avgitas, T., Baret, B., Barrios-Marti, J., Basa, S., Bertin, V., Biagi, S., Felis-Enguix, Iván, Martínez Mora, Juan Antonio, and Saldaña-Coscollar, María
Abstract: [EN] Using data recorded with the ANTARES telescope from 2007 to 2015, a new search for dark matter annihilation in the Milky Way has been performed. Three halo models and five annihilation channels, WIMP + WIMP -> b (b) over bar, W+W-, tau(+)tau(-), mu(+)mu(-) and v (v) over bar, with WIMP masses ranging from 50 2 GeV/C-2 to 100 Tev/C-2, were considered. No excess over the expected background was found, and limits on the thermally averaged annihilation cross-section were set.
Published: 2017

14. Diseño y desarrollo de la electrónica de los emisores acústicos para los sistemas de posicionamiento y calibración de telescopios submarinos de neutrinos

Author: Ardid Ramírez, Miguel, Herrero Debón, Alicia, Sogorb Devesa, Tomás Carlos, Universitat Politècnica de València. Escuela Técnica Superior de Ingeniería del Diseño - Escola Tècnica Superior d'Enginyeria del Disseny, Llorens Alvarez, Carlos David, Ardid Ramírez, Miguel, Herrero Debón, Alicia, Sogorb Devesa, Tomás Carlos, Universitat Politècnica de València. Escuela Técnica Superior de Ingeniería del Diseño - Escola Tècnica Superior d'Enginyeria del Disseny, and Llorens Alvarez, Carlos David
Abstract: Tesis por compendio, Neutrino telescopes are a new way of looking at the Universe. For more than a decade these structures are being designed to study the Universe from a new point of view, that is, from the particles generated in the cosmic accelerators of particles. These infrastructures are not only useful to study the Universe, but they can also be used in the field of Particle Physics and even in the study of underwater life. Most of these telescopes are based on the detection of the so-called Cherenkov light using photomultipliers, the difference between them lies in the medium in which they are located (ice or water) and in the infrastructure used. Specifically, European telescopes mount these photomultipliers in an underwater vertical structure anchored at great depth, which is under the influence of sea currents. For this reason they suffer displacements that affect the location of the photomultipliers and it becomes necessary to implement a positioning system for the telescope to be functional. For this, an acoustic system consisting of emitters anchored to the sea floor and receivers located at the different levels of the vertical structure is used. One of the objectives of the present thesis is the development of these acoustic emitters. For this purpose we have developed different laboratory prototypes with different features until obtaining an improved prototype that was installed and tested in ANTARES and NEMO telescopes. This showed that the prototype worked perfectly within the established requirements and then, we proceed to design a final version of the much more powerful and functional emitter, acoustic beacon, to be mounted inside aluminum vessels together with an omnidirectional acoustic transducer, which will be located in anchored positions of the new KM3NeT neutrino telescope. In collaboration with the MSM Company, 18 acoustic beacons were developed for KM3NeT-ARCA being two of them installed in the first marine campaign at the end of 2015, and being able then t, Los telescopios de neutrinos son una nueva forma de observar el Universo. Desde hace más de una década se están diseñando este tipo de estructuras con el propósito de estudiar el Universo desde un nuevo punto de vista, el de las partículas que se generan en los aceleradores de partículas cósmicos. Estas infraestructuras no solo se limitan al estudio del Universo, sino que también pueden ser utilizadas en el campo de la Física de partículas e incluso en el estudio de la vida submarina. La mayoría de estos telescopios se basan en la detección de la llamada luz de Cherenkov mediante fotomultiplicadores, la diferencia entre ellos radica en el medio en que se ubican (hielo o agua) y en la infraestructura utilizada. Concretamente, los telescopios europeos montan dichos fotomultiplicadores en una estructura vertical submarina anclada a gran profundidad, la cual está sometida a la influencia de las corrientes marinas. Por este motivo sufren desplazamientos que afectan a la localización de los fotomultiplicadores y se hace necesaria la implementación de un sistema de posicionamiento para que el telescopio sea funcional. Para ello se utiliza un sistema acústico consistente en unos emisores anclados al suelo marino y unos receptores situados en los diferentes niveles de la estructura vertical. Uno de los objetivos de la presente tesis es el desarrollo de estos emisores acústicos. Con este fin se han desarrollado diferentes prototipos de laboratorio con los que se han ido escalando prestaciones hasta obtener un prototipo que ha sido instalado y testeado en los telescopios ANTARES y NEMO. Así se demostró que el prototipo funcionaba perfectamente dentro de los requisitos establecidos, pasándose a diseñar una versión final del emisor acústico mucho más potente y funcional para ser montada dentro de vasijas de aluminio junto con un traductor omnidireccional en las anclas del nuevo telescopio de neutrinos KM3NeT. Conjuntamente con la empresa MSM se elaboraron 18 equipos para KM3NeT, Els telescopis de neutrins són una nova forma d'observar l'Univers. Des de fa més d'una dècada s'estan dissenyant aquest tipus d'estructures amb el propòsit d'estudiar l'Univers des d'un nou punt de vista, el de les partícules que es generen en els acceleradors de partícules còsmics. Estes infraestructures no sols es limiten a l'estudi de l'Univers, sinó que també poden ser utilitzades en el camp de la Física de partícules i fins i tot en l'estudi de la vida submarina. La majoria d'aquests telescopis es basen en la detecció de l'anomenada llum de Cherenkov per mitjà de fotomultiplicadors, la diferència entre ells radica en el mig en què s'ubiquen (gel o aigua) i en la infraestructura utilitzada. Concretament, els telescopis europeus munten dits fotomultiplicadors en una estructura vertical submarina ancorada a gran profunditat, la qual està sotmesa a la influència dels corrents marins. Per este motiu pateixen desplaçaments que afecten a la localització dels fotomultiplicadors i es fa necessària la implementació d'un sistema de posicionament per a què el telescopi siga funcional. Per a això s'utilitza un sistema acústic consistent en uns emissors ancorats al sòl marí i uns receptors situats en els diferents nivells de l'estructura vertical. Un dels objectius de la present tesi és el desenvolupament d'aquests emissors acústics. Amb este fi s'han desenvolupat diferents prototips de laboratori amb els quals s'han anat escalant prestacions fins a obtindre un prototip que ha sigut instal·lat i testeat en els telescopis ANTARES i NEMO. Així es va demostrar que el prototip funcionava perfectament dins dels requisits establerts, passant-se a dissenyar una versió final de l'emissor acústic molt més potent i funcional per a ser muntada dins d'atuells d'alumini junt amb un traductor omnidireccional en les àncores del nou telescopi de neutrins KM3NeT. Conjuntament amb l'empresa MSM es van elaborar 18 equips per a KM3NeT-ARCA, dos dels quals van ser instal·lats en la primera camp
Published: 2017

15. Results from the search for dark matter in the Milky Way with 9 years of data of the ANTARES neutrino telescope

Author: Universitat Politècnica de València. Departamento de Física Aplicada - Departament de Física Aplicada, Universitat Politècnica de València. Instituto de Investigación para la Gestión Integral de Zonas Costeras - Institut d'Investigació per a la Gestió Integral de Zones Costaneres, Ministerio de Ciencia e Innovación, Albert, A., Andre, M., Anghinolfi, M., Anton, G., Ardid Ramírez, Miguel, Aubert, J.J., Avgitas, T., Baret, B., Barrios-Marti, J., Basa, S., Bertin, V., Biagi, S., Felis-Enguix, Iván, Martínez Mora, Juan Antonio, Saldaña-Coscollar, María, Universitat Politècnica de València. Departamento de Física Aplicada - Departament de Física Aplicada, Universitat Politècnica de València. Instituto de Investigación para la Gestión Integral de Zonas Costeras - Institut d'Investigació per a la Gestió Integral de Zones Costaneres, Ministerio de Ciencia e Innovación, Albert, A., Andre, M., Anghinolfi, M., Anton, G., Ardid Ramírez, Miguel, Aubert, J.J., Avgitas, T., Baret, B., Barrios-Marti, J., Basa, S., Bertin, V., Biagi, S., Felis-Enguix, Iván, Martínez Mora, Juan Antonio, and Saldaña-Coscollar, María
Abstract: [EN] Using data recorded with the ANTARES telescope from 2007 to 2015, a new search for dark matter annihilation in the Milky Way has been performed. Three halo models and five annihilation channels, WIMP + WIMP -> b (b) over bar, W+W-, tau(+)tau(-), mu(+)mu(-) and v (v) over bar, with WIMP masses ranging from 50 2 GeV/C-2 to 100 Tev/C-2, were considered. No excess over the expected background was found, and limits on the thermally averaged annihilation cross-section were set.
Published: 2017

16. Diseño y desarrollo de la electrónica de los emisores acústicos para los sistemas de posicionamiento y calibración de telescopios submarinos de neutrinos

Author: Ardid Ramírez, Miguel, Herrero Debón, Alicia, Sogorb Devesa, Tomás Carlos, Universitat Politècnica de València. Escuela Técnica Superior de Ingeniería del Diseño - Escola Tècnica Superior d'Enginyeria del Disseny, Llorens Alvarez, Carlos David, Ardid Ramírez, Miguel, Herrero Debón, Alicia, Sogorb Devesa, Tomás Carlos, Universitat Politècnica de València. Escuela Técnica Superior de Ingeniería del Diseño - Escola Tècnica Superior d'Enginyeria del Disseny, and Llorens Alvarez, Carlos David
Abstract: Tesis por compendio, Neutrino telescopes are a new way of looking at the Universe. For more than a decade these structures are being designed to study the Universe from a new point of view, that is, from the particles generated in the cosmic accelerators of particles. These infrastructures are not only useful to study the Universe, but they can also be used in the field of Particle Physics and even in the study of underwater life. Most of these telescopes are based on the detection of the so-called Cherenkov light using photomultipliers, the difference between them lies in the medium in which they are located (ice or water) and in the infrastructure used. Specifically, European telescopes mount these photomultipliers in an underwater vertical structure anchored at great depth, which is under the influence of sea currents. For this reason they suffer displacements that affect the location of the photomultipliers and it becomes necessary to implement a positioning system for the telescope to be functional. For this, an acoustic system consisting of emitters anchored to the sea floor and receivers located at the different levels of the vertical structure is used. One of the objectives of the present thesis is the development of these acoustic emitters. For this purpose we have developed different laboratory prototypes with different features until obtaining an improved prototype that was installed and tested in ANTARES and NEMO telescopes. This showed that the prototype worked perfectly within the established requirements and then, we proceed to design a final version of the much more powerful and functional emitter, acoustic beacon, to be mounted inside aluminum vessels together with an omnidirectional acoustic transducer, which will be located in anchored positions of the new KM3NeT neutrino telescope. In collaboration with the MSM Company, 18 acoustic beacons were developed for KM3NeT-ARCA being two of them installed in the first marine campaign at the end of 2015, and being able then t, Los telescopios de neutrinos son una nueva forma de observar el Universo. Desde hace más de una década se están diseñando este tipo de estructuras con el propósito de estudiar el Universo desde un nuevo punto de vista, el de las partículas que se generan en los aceleradores de partículas cósmicos. Estas infraestructuras no solo se limitan al estudio del Universo, sino que también pueden ser utilizadas en el campo de la Física de partículas e incluso en el estudio de la vida submarina. La mayoría de estos telescopios se basan en la detección de la llamada luz de Cherenkov mediante fotomultiplicadores, la diferencia entre ellos radica en el medio en que se ubican (hielo o agua) y en la infraestructura utilizada. Concretamente, los telescopios europeos montan dichos fotomultiplicadores en una estructura vertical submarina anclada a gran profundidad, la cual está sometida a la influencia de las corrientes marinas. Por este motivo sufren desplazamientos que afectan a la localización de los fotomultiplicadores y se hace necesaria la implementación de un sistema de posicionamiento para que el telescopio sea funcional. Para ello se utiliza un sistema acústico consistente en unos emisores anclados al suelo marino y unos receptores situados en los diferentes niveles de la estructura vertical. Uno de los objetivos de la presente tesis es el desarrollo de estos emisores acústicos. Con este fin se han desarrollado diferentes prototipos de laboratorio con los que se han ido escalando prestaciones hasta obtener un prototipo que ha sido instalado y testeado en los telescopios ANTARES y NEMO. Así se demostró que el prototipo funcionaba perfectamente dentro de los requisitos establecidos, pasándose a diseñar una versión final del emisor acústico mucho más potente y funcional para ser montada dentro de vasijas de aluminio junto con un traductor omnidireccional en las anclas del nuevo telescopio de neutrinos KM3NeT. Conjuntamente con la empresa MSM se elaboraron 18 equipos para KM3NeT, Els telescopis de neutrins són una nova forma d'observar l'Univers. Des de fa més d'una dècada s'estan dissenyant aquest tipus d'estructures amb el propòsit d'estudiar l'Univers des d'un nou punt de vista, el de les partícules que es generen en els acceleradors de partícules còsmics. Estes infraestructures no sols es limiten a l'estudi de l'Univers, sinó que també poden ser utilitzades en el camp de la Física de partícules i fins i tot en l'estudi de la vida submarina. La majoria d'aquests telescopis es basen en la detecció de l'anomenada llum de Cherenkov per mitjà de fotomultiplicadors, la diferència entre ells radica en el mig en què s'ubiquen (gel o aigua) i en la infraestructura utilitzada. Concretament, els telescopis europeus munten dits fotomultiplicadors en una estructura vertical submarina ancorada a gran profunditat, la qual està sotmesa a la influència dels corrents marins. Per este motiu pateixen desplaçaments que afecten a la localització dels fotomultiplicadors i es fa necessària la implementació d'un sistema de posicionament per a què el telescopi siga funcional. Per a això s'utilitza un sistema acústic consistent en uns emissors ancorats al sòl marí i uns receptors situats en els diferents nivells de l'estructura vertical. Un dels objectius de la present tesi és el desenvolupament d'aquests emissors acústics. Amb este fi s'han desenvolupat diferents prototips de laboratori amb els quals s'han anat escalant prestacions fins a obtindre un prototip que ha sigut instal·lat i testeat en els telescopis ANTARES i NEMO. Així es va demostrar que el prototip funcionava perfectament dins dels requisits establerts, passant-se a dissenyar una versió final de l'emissor acústic molt més potent i funcional per a ser muntada dins d'atuells d'alumini junt amb un traductor omnidireccional en les àncores del nou telescopi de neutrins KM3NeT. Conjuntament amb l'empresa MSM es van elaborar 18 equips per a KM3NeT-ARCA, dos dels quals van ser instal·lats en la primera camp
Published: 2017

17. Search for dark matter annihilation in the earth using the ANTARES neutrino telescope

Author: Centre Tecnològic de Vilanova i la Geltrú, Universitat Politècnica de Catalunya. LAB - Laboratori d'Aplicacions Bioacústiques, Albert, A., André, Michel, Anghinolfi, Marco, Anton, G., Ardid, M., Aubert, J.-J., Avgitas, T., Baret, B., Barrios Martí, J., Basa, S., Bertin, V., Centre Tecnològic de Vilanova i la Geltrú, Universitat Politècnica de Catalunya. LAB - Laboratori d'Aplicacions Bioacústiques, Albert, A., André, Michel, Anghinolfi, Marco, Anton, G., Ardid, M., Aubert, J.-J., Avgitas, T., Baret, B., Barrios Martí, J., Basa, S., and Bertin, V.
Abstract: A search for a neutrino signal from WIMP pair annihilations in the centre of the Earth has been performed with the data collected with the ANTARES neutrino telescope from 2007 to 2012. The event selection criteria have been developed and tuned to maximise the sensitivity of the experiment to such a neutrino signal. No significant excess of neutrinos over the expected background has been observed. Upper limits at 90% C.L. on the WIMP annihilation rate in the Earth and the spin independent scattering cross-section of WIMPs to nucleons View the MathML source were calculated for WIMP pair annihilations into either t+t-, W+W-, View the MathML source or the non-SUSY View the MathML source as a function of the WIMP mass (between View the MathML source and View the MathML source) and as a function of the thermally averaged annihilation cross section times velocity Earth of the WIMPs in the centre of the Earth. For masses of the WIMP close to the mass of iron nuclei (View the MathML source), the obtained limits on View the MathML source are more stringent than those obtained by other indirect searches., Postprint (author's final draft)
Published: 2017

18. Results from the search for dark matter in the Milky Way with 9 years of data of the ANTARES neutrino telescope

Author: Centre Tecnològic de Vilanova i la Geltrú, Universitat Politècnica de Catalunya. LAB - Laboratori d'Aplicacions Bioacústiques, Albert, A., André, Michel, Anghinolfi, Marco, Anton, G., Centre Tecnològic de Vilanova i la Geltrú, Universitat Politècnica de Catalunya. LAB - Laboratori d'Aplicacions Bioacústiques, Albert, A., André, Michel, Anghinolfi, Marco, and Anton, G.
Abstract: Using data recorded with the ANTARES telescope from 2007 to 2015, a new search for dark matter annihilation in the Milky Way has been performed. Three halo models and five annihilation channels, View the MathML source and View the MathML source, with WIMP masses ranging from View the MathML source to View the MathML source, were considered. No excess over the expected background was found, and limits on the thermally averaged annihilation cross-section were set., Postprint (published version)
Published: 2017

19. Time calibration with atmospheric muon tracks in the ANTARES neutrino telescope

Author: Universitat Politècnica de València. Instituto de Investigación para la Gestión Integral de Zonas Costeras - Institut d'Investigació per a la Gestió Integral de Zones Costaneres, Universitat Politècnica de València. Escuela Técnica Superior de Ingeniería del Diseño - Escola Tècnica Superior d'Enginyeria del Disseny, Universitat Politècnica de València. Escuela Politécnica Superior de Gandia - Escola Politècnica Superior de Gandia, Conseil Régional Provence-Alpes-Côte d'Azur, Ministerio de Ciencia e Innovación, Conseil Régional, Île-de-France, Conseil Régional d'Alsace, Instituto Nazionale di Fisica Nucleare, Netherlands Organization for Scientific Research, Generalitat Valenciana, European Commission, Foundation for Fundamental Research on Matter, Holanda, Council on grants of the President of the Russian Federation, Commissariat à l'Énergie Atomique et aux Énergies Alternatives, Francia, National Authority for Scientific Research, Rumanía, European Regional Development Fund, Centre National pour la Recherche Scientifique et Technique, Marruecos, Agence de l'Oriental, Marruecos, Bundesministerium für Bildung und Forschung, Alemania, Ministerio de Economía y Competitividad, Centre National de la Recherche Scientifique, Francia, Adrián Martínez, Silvia, Albert, A., André, M., Anton, G., Ardid Ramírez, Miguel, Aubert, J.-J., Baret, B., Barrios Martí, J., Basa, S., Bertin, V., Bou Cabo, Manuel, Felis Enguix, Iván, Herrero Debón, Alicia, Martínez Mora, Juan Antonio, Saldaña-Coscollar, María, Universitat Politècnica de València. Instituto de Investigación para la Gestión Integral de Zonas Costeras - Institut d'Investigació per a la Gestió Integral de Zones Costaneres, Universitat Politècnica de València. Escuela Técnica Superior de Ingeniería del Diseño - Escola Tècnica Superior d'Enginyeria del Disseny, Universitat Politècnica de València. Escuela Politécnica Superior de Gandia - Escola Politècnica Superior de Gandia, Conseil Régional Provence-Alpes-Côte d'Azur, Ministerio de Ciencia e Innovación, Conseil Régional, Île-de-France, Conseil Régional d'Alsace, Instituto Nazionale di Fisica Nucleare, Netherlands Organization for Scientific Research, Generalitat Valenciana, European Commission, Foundation for Fundamental Research on Matter, Holanda, Council on grants of the President of the Russian Federation, Commissariat à l'Énergie Atomique et aux Énergies Alternatives, Francia, National Authority for Scientific Research, Rumanía, European Regional Development Fund, Centre National pour la Recherche Scientifique et Technique, Marruecos, Agence de l'Oriental, Marruecos, Bundesministerium für Bildung und Forschung, Alemania, Ministerio de Economía y Competitividad, Centre National de la Recherche Scientifique, Francia, Adrián Martínez, Silvia, Albert, A., André, M., Anton, G., Ardid Ramírez, Miguel, Aubert, J.-J., Baret, B., Barrios Martí, J., Basa, S., Bertin, V., Bou Cabo, Manuel, Felis Enguix, Iván, Herrero Debón, Alicia, Martínez Mora, Juan Antonio, and Saldaña-Coscollar, María
Abstract: The ANTARES experiment consists of an array of photomultipliers distributed along 12 lines and located deep underwater in the Mediterranean Sea. It searches for astrophysical neutrinos collecting the Cherenkov light induced by the charged particles, mainly muons, produced in neutrino interactions around the detector. Since at energies of ∼10 TeV the muon and the incident neutrino are almost collinear, it is possible to use the ANTARES detector as a neutrino telescope and identify a source of neutrinos in the sky starting from a precise reconstruction of the muon trajectory. To get this result, the arrival times of the Cherenkov photons must be accurately measured. A to perform time calibrations with the precision required to have optimal performances of the instrument is described. The reconstructed tracks of the atmospheric muons in the ANTARES detector are used to determine the relative time off- sets between photomultipliers. Currently, this method is used to obtain the time calibration constants for photomultipliers on different lines at a precision level of 0.5 ns. It has also been validated for calibrating photomultipliers on the same line, using a system of LEDs and laser light devices.
Published: 2016

20. Time calibration with atmospheric muon tracks in the ANTARES neutrino telescope

Author: Universitat Politècnica de València. Instituto de Investigación para la Gestión Integral de Zonas Costeras - Institut d'Investigació per a la Gestió Integral de Zones Costaneres, Universitat Politècnica de València. Escuela Técnica Superior de Ingeniería del Diseño - Escola Tècnica Superior d'Enginyeria del Disseny, Universitat Politècnica de València. Escuela Politécnica Superior de Gandia - Escola Politècnica Superior de Gandia, Conseil Régional Provence-Alpes-Côte d'Azur, Ministerio de Ciencia e Innovación, Conseil Régional, Île-de-France, Conseil Régional d'Alsace, Instituto Nazionale di Fisica Nucleare, Netherlands Organization for Scientific Research, Generalitat Valenciana, European Commission, Foundation for Fundamental Research on Matter, Holanda, Council on grants of the President of the Russian Federation, Commissariat à l'Énergie Atomique et aux Énergies Alternatives, Francia, National Authority for Scientific Research, Rumanía, European Regional Development Fund, Centre National pour la Recherche Scientifique et Technique, Marruecos, Agence de l'Oriental, Marruecos, Bundesministerium für Bildung und Forschung, Alemania, Ministerio de Economía y Competitividad, Centre National de la Recherche Scientifique, Francia, Adrián Martínez, Silvia, Albert, A., André, M., Anton, G., Ardid Ramírez, Miguel, Aubert, J.-J., Baret, B., Barrios Martí, J., Basa, S., Bertin, V., Bou Cabo, Manuel, Felis Enguix, Iván, Herrero Debón, Alicia, Martínez Mora, Juan Antonio, Saldaña-Coscollar, María, Universitat Politècnica de València. Instituto de Investigación para la Gestión Integral de Zonas Costeras - Institut d'Investigació per a la Gestió Integral de Zones Costaneres, Universitat Politècnica de València. Escuela Técnica Superior de Ingeniería del Diseño - Escola Tècnica Superior d'Enginyeria del Disseny, Universitat Politècnica de València. Escuela Politécnica Superior de Gandia - Escola Politècnica Superior de Gandia, Conseil Régional Provence-Alpes-Côte d'Azur, Ministerio de Ciencia e Innovación, Conseil Régional, Île-de-France, Conseil Régional d'Alsace, Instituto Nazionale di Fisica Nucleare, Netherlands Organization for Scientific Research, Generalitat Valenciana, European Commission, Foundation for Fundamental Research on Matter, Holanda, Council on grants of the President of the Russian Federation, Commissariat à l'Énergie Atomique et aux Énergies Alternatives, Francia, National Authority for Scientific Research, Rumanía, European Regional Development Fund, Centre National pour la Recherche Scientifique et Technique, Marruecos, Agence de l'Oriental, Marruecos, Bundesministerium für Bildung und Forschung, Alemania, Ministerio de Economía y Competitividad, Centre National de la Recherche Scientifique, Francia, Adrián Martínez, Silvia, Albert, A., André, M., Anton, G., Ardid Ramírez, Miguel, Aubert, J.-J., Baret, B., Barrios Martí, J., Basa, S., Bertin, V., Bou Cabo, Manuel, Felis Enguix, Iván, Herrero Debón, Alicia, Martínez Mora, Juan Antonio, and Saldaña-Coscollar, María
Abstract: The ANTARES experiment consists of an array of photomultipliers distributed along 12 lines and located deep underwater in the Mediterranean Sea. It searches for astrophysical neutrinos collecting the Cherenkov light induced by the charged particles, mainly muons, produced in neutrino interactions around the detector. Since at energies of ∼10 TeV the muon and the incident neutrino are almost collinear, it is possible to use the ANTARES detector as a neutrino telescope and identify a source of neutrinos in the sky starting from a precise reconstruction of the muon trajectory. To get this result, the arrival times of the Cherenkov photons must be accurately measured. A to perform time calibrations with the precision required to have optimal performances of the instrument is described. The reconstructed tracks of the atmospheric muons in the ANTARES detector are used to determine the relative time off- sets between photomultipliers. Currently, this method is used to obtain the time calibration constants for photomultipliers on different lines at a precision level of 0.5 ns. It has also been validated for calibrating photomultipliers on the same line, using a system of LEDs and laser light devices.
Published: 2016

21. Constraints on the neutrino emission from the Galactic Ridge with the ANTARES telescope

Author: Universitat Politècnica de València. Departamento de Física Aplicada - Departament de Física Aplicada, Universitat Politècnica de València. Instituto de Investigación para la Gestión Integral de Zonas Costeras - Institut d'Investigació per a la Gestió Integral de Zones Costaneres, Centre National de la Recherche Scientifique, Francia, Commissariat à l'Énergie Atomique et aux Énergies Alternatives, Francia, European Commission, European Regional Development Fund, Institut Universitaire de France, Agence Nationale de la Recherche, Francia, Conseil Régional, Île-de-France, Conseil Régional d'Alsace, Conseil Régional Provence-Alpes-Côte d'Azur, Département du Var and Ville de La Seyne-sur-Mer, Bundesministerium für Bildung und Forschung, Alemania, Instituto Nazionale di Fisica Nucleare, Foundation for Fundamental Research on Matter, Holanda, Netherlands Organization for Scientific Research, Council on grants of the President of the Russian Federation, National Authority for Scientific Research, Rumanía, Ministerio de Economía y Competitividad, Generalitat Valenciana, Agence de l'Oriental, Marruecos, Centre National pour la Recherche Scientifique et Technique, Marruecos, Adrián Martínez, Silvia, Ardid Ramírez, Miguel, Felis-Enguix, Iván, Martínez Mora, Juan Antonio, Saldaña-Coscollar, María, Universitat Politècnica de València. Departamento de Física Aplicada - Departament de Física Aplicada, Universitat Politècnica de València. Instituto de Investigación para la Gestión Integral de Zonas Costeras - Institut d'Investigació per a la Gestió Integral de Zones Costaneres, Centre National de la Recherche Scientifique, Francia, Commissariat à l'Énergie Atomique et aux Énergies Alternatives, Francia, European Commission, European Regional Development Fund, Institut Universitaire de France, Agence Nationale de la Recherche, Francia, Conseil Régional, Île-de-France, Conseil Régional d'Alsace, Conseil Régional Provence-Alpes-Côte d'Azur, Département du Var and Ville de La Seyne-sur-Mer, Bundesministerium für Bildung und Forschung, Alemania, Instituto Nazionale di Fisica Nucleare, Foundation for Fundamental Research on Matter, Holanda, Netherlands Organization for Scientific Research, Council on grants of the President of the Russian Federation, National Authority for Scientific Research, Rumanía, Ministerio de Economía y Competitividad, Generalitat Valenciana, Agence de l'Oriental, Marruecos, Centre National pour la Recherche Scientifique et Technique, Marruecos, Adrián Martínez, Silvia, Ardid Ramírez, Miguel, Felis-Enguix, Iván, Martínez Mora, Juan Antonio, and Saldaña-Coscollar, María
Abstract: [EN] A highly significant excess of high-energy astrophysical neutrinos has been reported by the IceCube Collaboration. Some features of the energy and declination distributions of IceCube events hint at a North/South asymmetry of the neutrino flux. This could be due to the presence of the bulk of our Galaxy in the Southern hemisphere. The ANTARES neutrino telescope, located in the Mediterranean Sea, has been taking data since 2007. It offers the best sensitivity to muon neutrinos produced by galactic cosmic ray interactions in this region of the sky. In this letter a search for an extended neutrino flux from the Galactic Ridge region is presented. Different models of neutrino production by cosmic ray propagation are tested. No excess of events is observed and upper limits for different neutrino flux spectral indices gamma are set. For gamma=2.4 the 90% confidence level flux upper limit at 100 TeV for one neutrino flavour corresponds to Phi1f0 (100 TeV)=2.0 10-7; GeV cm-2 s-1 sr-1. Under this assumption, at most two events of the IceCube cosmic candidates can originate from the Galactic Ridge. A simple power-law extrapolation of the Fermi-LAT flux to account for IceCube High Energy Starting Events is excluded at 90% confidence level.
Published: 2016

22. Acoustics in water: synergies with marine biology

Author: Centre Tecnològic de Vilanova i la Geltrú, Universitat Politècnica de Catalunya. LAB - Laboratori d'Aplicacions Bioacústiques, Van der Schaar, Mike Connor Roger Malcolm, Lahmann, Robert, Graf, Kay, Houégnigan, Ludwig, Solsona Berga, Alba, Vreese, Steffen de, Sánchez, Antonio, André, Michel, Centre Tecnològic de Vilanova i la Geltrú, Universitat Politècnica de Catalunya. LAB - Laboratori d'Aplicacions Bioacústiques, Van der Schaar, Mike Connor Roger Malcolm, Lahmann, Robert, Graf, Kay, Houégnigan, Ludwig, Solsona Berga, Alba, Vreese, Steffen de, Sánchez, Antonio, and André, Michel
Abstract: This paper presents some of the bioacoustics related analysis that was performed on the ANTARES data, focussing on the year 2014. The data was processed for sperm whale, dolphin and shipping presence and grouped by hour of the day. It seemed that dolphins were more socially active during the day and foraging during the night. Sperm whales were mostly foraging during the day, but they may have been moving to other areas during the night. The most intense shipping noise came from a ferry that passed the platform twice a day. Although beaked whales were expected to be present in the area, so far their biosonar signal has not been conclusively found., Postprint (published version)
Published: 2016

23. Constraints on the neutrino emission from the Galactic Ridge with the ANTARES telescope

Author: Universitat Politècnica de València. Departamento de Física Aplicada - Departament de Física Aplicada, Universitat Politècnica de València. Instituto de Investigación para la Gestión Integral de Zonas Costeras - Institut d'Investigació per a la Gestió Integral de Zones Costaneres, Centre National de la Recherche Scientifique, Francia, Commissariat à l'Énergie Atomique et aux Énergies Alternatives, Francia, European Commission, European Regional Development Fund, Institut Universitaire de France, Agence Nationale de la Recherche, Francia, Conseil Régional, Île-de-France, Conseil Régional d'Alsace, Conseil Régional Provence-Alpes-Côte d'Azur, Département du Var and Ville de La Seyne-sur-Mer, Bundesministerium für Bildung und Forschung, Alemania, Instituto Nazionale di Fisica Nucleare, Foundation for Fundamental Research on Matter, Holanda, Netherlands Organization for Scientific Research, Council on grants of the President of the Russian Federation, National Authority for Scientific Research, Rumanía, Ministerio de Economía y Competitividad, Generalitat Valenciana, Agence de l'Oriental, Marruecos, Centre National pour la Recherche Scientifique et Technique, Marruecos, Adrián Martínez, Silvia, Ardid Ramírez, Miguel, Felis-Enguix, Iván, Martínez Mora, Juan Antonio, Saldaña-Coscollar, María, Universitat Politècnica de València. Departamento de Física Aplicada - Departament de Física Aplicada, Universitat Politècnica de València. Instituto de Investigación para la Gestión Integral de Zonas Costeras - Institut d'Investigació per a la Gestió Integral de Zones Costaneres, Centre National de la Recherche Scientifique, Francia, Commissariat à l'Énergie Atomique et aux Énergies Alternatives, Francia, European Commission, European Regional Development Fund, Institut Universitaire de France, Agence Nationale de la Recherche, Francia, Conseil Régional, Île-de-France, Conseil Régional d'Alsace, Conseil Régional Provence-Alpes-Côte d'Azur, Département du Var and Ville de La Seyne-sur-Mer, Bundesministerium für Bildung und Forschung, Alemania, Instituto Nazionale di Fisica Nucleare, Foundation for Fundamental Research on Matter, Holanda, Netherlands Organization for Scientific Research, Council on grants of the President of the Russian Federation, National Authority for Scientific Research, Rumanía, Ministerio de Economía y Competitividad, Generalitat Valenciana, Agence de l'Oriental, Marruecos, Centre National pour la Recherche Scientifique et Technique, Marruecos, Adrián Martínez, Silvia, Ardid Ramírez, Miguel, Felis-Enguix, Iván, Martínez Mora, Juan Antonio, and Saldaña-Coscollar, María
Abstract: [EN] A highly significant excess of high-energy astrophysical neutrinos has been reported by the IceCube Collaboration. Some features of the energy and declination distributions of IceCube events hint at a North/South asymmetry of the neutrino flux. This could be due to the presence of the bulk of our Galaxy in the Southern hemisphere. The ANTARES neutrino telescope, located in the Mediterranean Sea, has been taking data since 2007. It offers the best sensitivity to muon neutrinos produced by galactic cosmic ray interactions in this region of the sky. In this letter a search for an extended neutrino flux from the Galactic Ridge region is presented. Different models of neutrino production by cosmic ray propagation are tested. No excess of events is observed and upper limits for different neutrino flux spectral indices gamma are set. For gamma=2.4 the 90% confidence level flux upper limit at 100 TeV for one neutrino flavour corresponds to Phi1f0 (100 TeV)=2.0 10-7; GeV cm-2 s-1 sr-1. Under this assumption, at most two events of the IceCube cosmic candidates can originate from the Galactic Ridge. A simple power-law extrapolation of the Fermi-LAT flux to account for IceCube High Energy Starting Events is excluded at 90% confidence level.
Published: 2016

24. Time calibration with atmospheric muon tracks in the ANTARES neutrino telescope

Author: Centre Tecnològic de Vilanova i la Geltrú, Universitat Politècnica de Catalunya. LAB - Laboratori d'Aplicacions Bioacústiques, Adrian Martinez, Silvia, Albert, A., André, Michel, Centre Tecnològic de Vilanova i la Geltrú, Universitat Politècnica de Catalunya. LAB - Laboratori d'Aplicacions Bioacústiques, Adrian Martinez, Silvia, Albert, A., and André, Michel
Abstract: The ANTARES experiment consists of an array of photomultipliers distributed along 12 lines and located deep underwater in the Mediterranean Sea. It searches for astrophysical neutrinos collecting the Cherenkov light induced by the charged particles, mainly muons, produced in neutrino interactions around the detector. Since at energies of similar to 10 TeV the muon and the incident neutrino are almost collinear, it is possible to use the ANTARES detector as a neutrino telescope and identify a source of neutrinos in the sky starting from a precise reconstruction of the muon trajectory. To get this result, the arrival times of the Cherenkov photons must be accurately measured. A to perform time calibrations with the precision required to have optimal performances of the instrument is described. The reconstructed tracks of the atmospheric muons in the ANTARES detector are used to determine the relative time offsets between photomultipliers. Currently, this method is used to obtain the time calibration constants for photomultipliers on different lines at a precision level of 0.5 ns. It has also been validated for calibrating photomultipliers on the same line, using a system of LEDs and laser light devices. (C) 2016 Elsevier B.V. All rights reserved., Postprint (author's final draft)
Published: 2016

25. Constraints on the neutrino emission from the Galactic Ridge with the ANTARES telescope

Author: Centre Tecnològic de Vilanova i la Geltrú, Universitat Politècnica de Catalunya. LAB - Laboratori d'Aplicacions Bioacústiques, Anghinolfi, Marco, Anton, G., André, Michel, Avgitas, T., Bertin, V., Bormuth, R., Puricelli, Stefano, Coniglione, R., Gleixner, A, Lefèvre, Dominique, Michael, Turner, Pellegrino, Carlo, Piattelli, P., Sanchez Losa, Agustín, Schnabel, J., Centre Tecnològic de Vilanova i la Geltrú, Universitat Politècnica de Catalunya. LAB - Laboratori d'Aplicacions Bioacústiques, Anghinolfi, Marco, Anton, G., André, Michel, Avgitas, T., Bertin, V., Bormuth, R., Puricelli, Stefano, Coniglione, R., Gleixner, A, Lefèvre, Dominique, Michael, Turner, Pellegrino, Carlo, Piattelli, P., Sanchez Losa, Agustín, and Schnabel, J.
Abstract: A highly significant excess of high-energy astrophysical neutrinos has been reported by the IceCube Collaboration. Some features of the energy and declination distributions of IceCube events hint at a North/South asymmetry of the neutrino flux. This could be due to the presence of the bulk of our Galaxy in the Southern hemisphere. The ANTARES neutrino telescope, located in the Mediterranean Sea, has been taking data since 2007. It offers the best sensitivity to muon neutrinos produced by galactic cosmic ray interactions in this region of the sky. In this letter a search for an extended neutrino flux from the Galactic Ridge region is presented. Different models of neutrino production by cosmic ray propagation are tested. No excess of events is observed and upper limits for different neutrino flux spectral indices G are set. For G=2.4 the 90% confidence level flux upper limit at 100 TeV for one neutrino flavour corresponds to View the MathML source. Under this assumption, at most two events of the IceCube cosmic candidates can originate from the Galactic Ridge. A simple power-law extrapolation of the Fermi-LAT flux to account for IceCube High Energy Starting Events is excluded at 90% confidence level., Postprint (author's final draft)
Published: 2016

26. Design and Development of an Acoustic Calibrator for Deep-Sea Neutrino Telescopes and First Search for Secluded Dark Matter with ANTARES

Author: Ardid Ramírez, Miguel, Bou Cabo, Manuel, Universitat Politècnica de València. Escuela Técnica Superior de Ingeniería del Diseño - Escola Tècnica Superior d'Enginyeria del Disseny, Adrián Martínez, Silvia, Ardid Ramírez, Miguel, Bou Cabo, Manuel, Universitat Politècnica de València. Escuela Técnica Superior de Ingeniería del Diseño - Escola Tècnica Superior d'Enginyeria del Disseny, and Adrián Martínez, Silvia
Abstract: [EN] Neutrino astronomy is a booming field in astroparticle physics. Due to the particular characteristics of neutrinos, these particles offer great advantages as probes for the study of the far and high-energy Universe. It is extensively accepted by the scientific community that a multi-messenger approach with the combination of information provided by neutrinos, photons and charged particles (cosmic rays) is possible to obtain a more complete image of the fundamental astrophysics processes taking place in our Universe. Since neutrinos are neutral and very weak interacting particles they can reach the Earth from astrophysical sources without deflection by magnetic fields and almost without energy losses and absorption, contrarily to the rest of messengers. The other side of the coin of neutrino properties is that detection of neutrinos is very challenging and big highly instrumented detection volumes are needed. Natural media (deep sea, lakes or ice in the Antarctica) host this kind of experiments using the water (or ice) as target material where the neutrino interaction is produced. ANTARES is the first undersea neutrino telescope, located at 2475 m depth in the Mediterranean Sea. ANTARES is optimized for optical detection of the Cerenkov light induced by relativistic muons produced by high energy neutrino interactions near the detector. The charge, position and arrival time of the photons to the optical modules which compose the detector allows the muon track reconstruction, and thus, knowing the neutrino coming direction. Some information of the event energy is also derived. ANTARES is also hosting the AMADEUS experiment which is investigating the feasibility of the acoustic detection of Ultra-High Energy (UHE) neutrinos. The framework of this thesis is the ANTARES experiment. As commonly done in the thesis developed in this experiment (and in this field), the work has been divided in two different areas. On the one hand, a part more devoted to technological asp, [ES] La astronomía de neutrinos es un campo en auge dentro de la Física de Astropartículas. Los neutrinos ofrecen grandes ventajas como sondas para estudiar el Universo lejano y de alta energía. Es extensamente aceptado que mediante la combinación de la información que proporcionan los neutrinos junto a la obtenida mediante fotones de alta energía (rayos gamma) y partículas cargadas (rayos cósmicos) se podría obtener una imagen más completa de los procesos astrofísicos fundamentales que tienen lugar a lo largo de nuestro Universo.La razón fundamental por la que los neutrinos son tan altamente valorados como mensajeros es la baja interacción con el medio que los rodea. Al ser partículas sin carga interactúan muy débilmente con la materia, por ello pueden escaparse de la fuente donde se han producido y, al contrario de lo que ocurre con el resto de mensajeros, pueden llegar a la Tierra sin ser desviados por los campo magnéticos y sin prácticamente pérdida de energía. Esta misma razón que los hace tan valorados es a su vez la que los hace tan difíciles de detectar. Se impone la necesidad de construir detectores de grandes volúmenes, del orden del km3, altamente instrumentados. Se utilizan medios naturales (en el fondo del mar, en lagos o en enterrados en el hielo de la Antártida) aprovechando el agua (o hielo) como material diana donde se espera que interaccione el neutrino. ANTARES es el primer telescopio submarino de neutrinos construido en el fondo del mar Mediterráneo. Está optimizado para la detección óptica de la luz Cherenkov inducida por los muones relativistas producidos en la interacción de neutrinos de alta energía en los alrededores del detector. La información de la carga, posición y tiempo de llegada de los fotones a los fotomultiplicadores que componen el detector permite tanto la reconstrucción de la trayectoria del neutrino como el conocimiento de su energía. Además, ANTARES acoge el experimento AMADEUS mediante el cual se está investigando y testeando, [CA] L'astronomia de neutrins és un camp en auge dins la Física d'Astropartícules. Els neutrins ofereixen grans avantatges com a sondes per estudiar l'Univers llunyà i d'alta energia. Es extensament acceptat que mitjançant la combinació de la informació proporcionada pels neutrins junt a la obtinguda mitjançant fotons d'alta energia (rajos gamma) i partícules carregades (rajos còsmics) es podria obtindre una imatge més completa dels processos astrofísics fonamentals que es donen al llarg del nostre Univers. La raó fonamental per la qual els neutrins són altament valorats com a missatgers és la baixa interacció amb el medi que els envolta. Al ser partícules sense càrrega interactuen molt dèbilment amb la matèria, per això poden escapar-se de la font on s'han produït i, al contrari del que ocorre amb la resta de missatgers, poden arribar a La Terra sense desviar-se pels camps electromagnètics i sense pràcticament pèrdua d'energia. Aquesta mateixa raó que els fan tan valorats és al mateix temps la que els fa tan difícil de detectar. S'imposa la necessitat de construir detectors amb grans volums de detecció, de l'ordre del km3, altament instrumentats. S'utilitzen medis naturals (al fons de la mar, en llacs, al gel de l'Antàrtida) aprofitant l'aigua (o el gel) com a material diana on interaccionen el neutrins. ANTARES és el primer telescopi submarí de neutrins construït al fons de la mar Mediterrània. Està optimitzat per a la detecció òptica de la llum de Cherenkov induïda pels muons relativistes produïts en la interacció de neutrins d'alta energia als voltants del detector. La informació de la carrega, posició i temps d'arribada dels fotons als fotomultiplicadors que composen el detector permet tant la reconstrucció de la trajectòria del neutrí, amb gran resolució angular, com el coneixement de la seua energia. A més, ANTARES acull l'experiment AMADEUS mitjançant el qual s'està investigant i testejant la detecció acústica de neutrins de molt alta energia, que, al intera
Published: 2015

27. Design and Development of an Acoustic Calibrator for Deep-Sea Neutrino Telescopes and First Search for Secluded Dark Matter with ANTARES

Author: Ardid Ramírez, Miguel, Bou Cabo, Manuel, Universitat Politècnica de València. Escuela Técnica Superior de Ingeniería del Diseño - Escola Tècnica Superior d'Enginyeria del Disseny, Adrián Martínez, Silvia, Ardid Ramírez, Miguel, Bou Cabo, Manuel, Universitat Politècnica de València. Escuela Técnica Superior de Ingeniería del Diseño - Escola Tècnica Superior d'Enginyeria del Disseny, and Adrián Martínez, Silvia
Abstract: [EN] Neutrino astronomy is a booming field in astroparticle physics. Due to the particular characteristics of neutrinos, these particles offer great advantages as probes for the study of the far and high-energy Universe. It is extensively accepted by the scientific community that a multi-messenger approach with the combination of information provided by neutrinos, photons and charged particles (cosmic rays) is possible to obtain a more complete image of the fundamental astrophysics processes taking place in our Universe. Since neutrinos are neutral and very weak interacting particles they can reach the Earth from astrophysical sources without deflection by magnetic fields and almost without energy losses and absorption, contrarily to the rest of messengers. The other side of the coin of neutrino properties is that detection of neutrinos is very challenging and big highly instrumented detection volumes are needed. Natural media (deep sea, lakes or ice in the Antarctica) host this kind of experiments using the water (or ice) as target material where the neutrino interaction is produced. ANTARES is the first undersea neutrino telescope, located at 2475 m depth in the Mediterranean Sea. ANTARES is optimized for optical detection of the Cerenkov light induced by relativistic muons produced by high energy neutrino interactions near the detector. The charge, position and arrival time of the photons to the optical modules which compose the detector allows the muon track reconstruction, and thus, knowing the neutrino coming direction. Some information of the event energy is also derived. ANTARES is also hosting the AMADEUS experiment which is investigating the feasibility of the acoustic detection of Ultra-High Energy (UHE) neutrinos. The framework of this thesis is the ANTARES experiment. As commonly done in the thesis developed in this experiment (and in this field), the work has been divided in two different areas. On the one hand, a part more devoted to technological asp, [ES] La astronomía de neutrinos es un campo en auge dentro de la Física de Astropartículas. Los neutrinos ofrecen grandes ventajas como sondas para estudiar el Universo lejano y de alta energía. Es extensamente aceptado que mediante la combinación de la información que proporcionan los neutrinos junto a la obtenida mediante fotones de alta energía (rayos gamma) y partículas cargadas (rayos cósmicos) se podría obtener una imagen más completa de los procesos astrofísicos fundamentales que tienen lugar a lo largo de nuestro Universo.La razón fundamental por la que los neutrinos son tan altamente valorados como mensajeros es la baja interacción con el medio que los rodea. Al ser partículas sin carga interactúan muy débilmente con la materia, por ello pueden escaparse de la fuente donde se han producido y, al contrario de lo que ocurre con el resto de mensajeros, pueden llegar a la Tierra sin ser desviados por los campo magnéticos y sin prácticamente pérdida de energía. Esta misma razón que los hace tan valorados es a su vez la que los hace tan difíciles de detectar. Se impone la necesidad de construir detectores de grandes volúmenes, del orden del km3, altamente instrumentados. Se utilizan medios naturales (en el fondo del mar, en lagos o en enterrados en el hielo de la Antártida) aprovechando el agua (o hielo) como material diana donde se espera que interaccione el neutrino. ANTARES es el primer telescopio submarino de neutrinos construido en el fondo del mar Mediterráneo. Está optimizado para la detección óptica de la luz Cherenkov inducida por los muones relativistas producidos en la interacción de neutrinos de alta energía en los alrededores del detector. La información de la carga, posición y tiempo de llegada de los fotones a los fotomultiplicadores que componen el detector permite tanto la reconstrucción de la trayectoria del neutrino como el conocimiento de su energía. Además, ANTARES acoge el experimento AMADEUS mediante el cual se está investigando y testeando, [CA] L'astronomia de neutrins és un camp en auge dins la Física d'Astropartícules. Els neutrins ofereixen grans avantatges com a sondes per estudiar l'Univers llunyà i d'alta energia. Es extensament acceptat que mitjançant la combinació de la informació proporcionada pels neutrins junt a la obtinguda mitjançant fotons d'alta energia (rajos gamma) i partícules carregades (rajos còsmics) es podria obtindre una imatge més completa dels processos astrofísics fonamentals que es donen al llarg del nostre Univers. La raó fonamental per la qual els neutrins són altament valorats com a missatgers és la baixa interacció amb el medi que els envolta. Al ser partícules sense càrrega interactuen molt dèbilment amb la matèria, per això poden escapar-se de la font on s'han produït i, al contrari del que ocorre amb la resta de missatgers, poden arribar a La Terra sense desviar-se pels camps electromagnètics i sense pràcticament pèrdua d'energia. Aquesta mateixa raó que els fan tan valorats és al mateix temps la que els fa tan difícil de detectar. S'imposa la necessitat de construir detectors amb grans volums de detecció, de l'ordre del km3, altament instrumentats. S'utilitzen medis naturals (al fons de la mar, en llacs, al gel de l'Antàrtida) aprofitant l'aigua (o el gel) com a material diana on interaccionen el neutrins. ANTARES és el primer telescopi submarí de neutrins construït al fons de la mar Mediterrània. Està optimitzat per a la detecció òptica de la llum de Cherenkov induïda pels muons relativistes produïts en la interacció de neutrins d'alta energia als voltants del detector. La informació de la carrega, posició i temps d'arribada dels fotons als fotomultiplicadors que composen el detector permet tant la reconstrucció de la trajectòria del neutrí, amb gran resolució angular, com el coneixement de la seua energia. A més, ANTARES acull l'experiment AMADEUS mitjançant el qual s'està investigant i testejant la detecció acústica de neutrins de molt alta energia, que, al intera
Published: 2015

28. Search for relativistic magnetic monopoles with the ANTARES neutrino telescope

Author: Adrián-Martínez, Silvia, Toscano, Simona, Adrián-Martínez, Silvia, and Toscano, Simona
Abstract: Magnetic monopoles are predicted in various unified gauge models and could be produced at intermediate mass scales. Their detection in a neutrino telescope is facilitated by the large amount of light emitted compared to that from muons. This paper reports on a search for upgoing relativistic magnetic monopoles with the ANTARES neutrino telescope using a data set of 116 days of live time taken from December 2007 to December 2008. The one observed event is consistent with the expected atmospheric neutrino and muon background, leading to a 90% C.L. upper limit on the monopole flux between 1.3 × 10 -17 and 8.9 × 10 -17 cm -2 s -1 sr -1 for monopoles with velocity β ≥ 0.625. © 2012 Elsevier B.V. All rights reserved., 0, SCOPUS: ar.j, info:eu-repo/semantics/published
Published: 2012

29. Measurement of the group velocity of light in sea water at the ANTARES site

Author: Universitat Politècnica de València. Instituto de Investigación para la Gestión Integral de Zonas Costeras - Institut d'Investigació per a la Gestió Integral de Zones Costaneres, Universitat Politècnica de València. Departamento de Física Aplicada - Departament de Física Aplicada, Adrián Martínez, Silvia, Al Samarai, I, Albert, A., André, A, Anghinolfi, M., Anton, G, Anvar, S., Ardid Ramírez, Miguel, Bou Cabo, Manuel, Camarena Femenia, Francisco, Ferri García, Marcelino, Larosa, Giuseppina, Martínez Mora, Juan Antonio, Universitat Politècnica de València. Instituto de Investigación para la Gestión Integral de Zonas Costeras - Institut d'Investigació per a la Gestió Integral de Zones Costaneres, Universitat Politècnica de València. Departamento de Física Aplicada - Departament de Física Aplicada, Adrián Martínez, Silvia, Al Samarai, I, Albert, A., André, A, Anghinolfi, M., Anton, G, Anvar, S., Ardid Ramírez, Miguel, Bou Cabo, Manuel, Camarena Femenia, Francisco, Ferri García, Marcelino, Larosa, Giuseppina, and Martínez Mora, Juan Antonio
Abstract: The group velocity of light has been measured at eight different wavelengths between 385 nm and 532 nm in the Mediterranean Sea at a depth of about 2.2 km with the ANTARES optical beacon systems. A parametrisation of the dependence of the refractive index on wavelength based on the salinity, pressure and temperature of the sea water at the ANTARES site is in good agreement with these measurements.
Published: 2012

30. Search for neutrino emission from gamma-ray flaring blazars with the ANTARES telescope

Author: Universitat Politècnica de València. Instituto de Investigación para la Gestión Integral de Zonas Costeras - Institut d'Investigació per a la Gestió Integral de Zones Costaneres, Universitat Politècnica de València. Departamento de Física Aplicada - Departament de Física Aplicada, Conseil Régional d'Alsace, Instituto Nazionale di Fisica Nucleare, Conseil Régional Provence-Alpes-Côte d'Azur, Commissariat à l'Énergie Atomique et aux Énergies Alternatives, Francia, Council on grants of the President of the Russian Federation, National Authority for Scientific Research, Rumanía, Netherlands Organization for Scientific Research, Agence Nationale de la Recherche, Francia, Bundesministerium für Bildung und Forschung, Alemania, Centre National de la Recherche Scientifique, Francia, Ministerio de Ciencia e Innovación, Département du Var and Ville de La Seyne-sur-Mer, Foundation for Fundamental Research on Matter, Holanda, European Regional Development Fund, Adrián Martínez, Silvia, Al Samarai, I, Albert, A., André, M, Anghinolfi, M, Anton, G, Anvar, S, Ardid Ramírez, Miguel, Astraatmadja, T., Aubert, J-J, Bou Cabo, Manuel, Camarena Femenia, Francisco, Ferri García, Marcelino, Larosa, Giuseppina, Martínez Mora, Juan Antonio, Universitat Politècnica de València. Instituto de Investigación para la Gestión Integral de Zonas Costeras - Institut d'Investigació per a la Gestió Integral de Zones Costaneres, Universitat Politècnica de València. Departamento de Física Aplicada - Departament de Física Aplicada, Conseil Régional d'Alsace, Instituto Nazionale di Fisica Nucleare, Conseil Régional Provence-Alpes-Côte d'Azur, Commissariat à l'Énergie Atomique et aux Énergies Alternatives, Francia, Council on grants of the President of the Russian Federation, National Authority for Scientific Research, Rumanía, Netherlands Organization for Scientific Research, Agence Nationale de la Recherche, Francia, Bundesministerium für Bildung und Forschung, Alemania, Centre National de la Recherche Scientifique, Francia, Ministerio de Ciencia e Innovación, Département du Var and Ville de La Seyne-sur-Mer, Foundation for Fundamental Research on Matter, Holanda, European Regional Development Fund, Adrián Martínez, Silvia, Al Samarai, I, Albert, A., André, M, Anghinolfi, M, Anton, G, Anvar, S, Ardid Ramírez, Miguel, Astraatmadja, T., Aubert, J-J, Bou Cabo, Manuel, Camarena Femenia, Francisco, Ferri García, Marcelino, Larosa, Giuseppina, and Martínez Mora, Juan Antonio
Abstract: The ANTARES telescope is well-suited to detect neutrinos produced in astrophysical transient sources as it can observe a full hemisphere of the sky at all times with a high duty cycle. Radio-loud active galactic nuclei with jets pointing almost directly towards the observer, the so-called blazars, are particularly attractive potential neutrino point sources. The all-sky monitor LAT on board the Fermi satellite probes the variability of any given gamma-ray bright blazar in the sky on time scales of hours to months. Assuming hadronic models, a strong correlation between the gamma-ray and the neutrino fluxes is expected. Selecting a narrow time window on the assumed neutrino production period can significantly reduce the background. An unbinned method based on the minimization of a likelihood ratio was applied to a subsample of data collected in 2008 (61 days live time). By searching for neutrinos during the high state periods of the AGN light curve, the sensitivity to these sources was improved by about a factor of two with respect to a standard time-integrated point source search. First results on the search for neutrinos associated with ten bright and variable Fermi sources are presented.
Published: 2012

31. A method for detection of muon induced electromagnetic showers with the ANTARES detector

Author: Universitat Politècnica de València. Departamento de Física Aplicada - Departament de Física Aplicada, Universitat Politècnica de València. Instituto de Investigación para la Gestión Integral de Zonas Costeras - Institut d'Investigació per a la Gestió Integral de Zones Costaneres, Ministerio de Ciencia e Innovación; Generalitat Valenciana, Agence Nationale de la Recherche, Francia, Bundesministerium für Bildung und Forschung, Alemania, Centre National de la Recherche Scientifique, Francia, Instituto Nazionale di Fisica Nucleare, Foundation for Fundamental Research on Matter, Holanda, Département du Var and Ville de La Seyne-sur-Mer, Commissariat à l'Énergie Atomique et aux Énergies Alternatives, Francia, National Authority for Scientific Research, Rumanía, Council on grants of the President of the Russian Federation, Netherlands Organization for Scientific Research, Aguilar, J. A., Al Samarai, I., Albert, A., Andre, M., Anghinolfi, M., Anton, G., Anvar, S., Ardid Ramírez, Miguel, Jesus, A. C. Assis, Astraatmadja, T., Bou Cabo, Manuel, Camarena Femenia, Francisco, Ferri García, Marcelino, Larosa, Giuseppina, Martínez Mora, Juan Antonio, Universitat Politècnica de València. Departamento de Física Aplicada - Departament de Física Aplicada, Universitat Politècnica de València. Instituto de Investigación para la Gestión Integral de Zonas Costeras - Institut d'Investigació per a la Gestió Integral de Zones Costaneres, Ministerio de Ciencia e Innovación; Generalitat Valenciana, Agence Nationale de la Recherche, Francia, Bundesministerium für Bildung und Forschung, Alemania, Centre National de la Recherche Scientifique, Francia, Instituto Nazionale di Fisica Nucleare, Foundation for Fundamental Research on Matter, Holanda, Département du Var and Ville de La Seyne-sur-Mer, Commissariat à l'Énergie Atomique et aux Énergies Alternatives, Francia, National Authority for Scientific Research, Rumanía, Council on grants of the President of the Russian Federation, Netherlands Organization for Scientific Research, Aguilar, J. A., Al Samarai, I., Albert, A., Andre, M., Anghinolfi, M., Anton, G., Anvar, S., Ardid Ramírez, Miguel, Jesus, A. C. Assis, Astraatmadja, T., Bou Cabo, Manuel, Camarena Femenia, Francisco, Ferri García, Marcelino, Larosa, Giuseppina, and Martínez Mora, Juan Antonio
Abstract: The primary aim of ANTARES is neutrino astronomy with upward going muons created in charged current muon neutrino interactions in the detector and its surroundings. Downward going muons are background for neutrino searches. These muons are the decay products of cosmic-ray collisions in the Earths atmosphere far above the detector. This paper presents a method to identify and count electromagnetic showers induced along atmospheric muon tracks with the ANTARES detector. The method is applied to both cosmic muon data and simulations and its applicability to the reconstruction of muon event energies is demonstrated. © 2012 Elsevier B.V. All rights reserved.
Published: 2012

32. The ANTARES telescope neutrino alert system

Author: Universitat Politècnica de València. Departamento de Física Aplicada - Departament de Física Aplicada, Universitat Politècnica de València. Instituto de Investigación para la Gestión Integral de Zonas Costeras - Institut d'Investigació per a la Gestió Integral de Zones Costaneres, Conseil Régional d'Alsace, Ministerio de Ciencia e Innovación; Generalitat Valenciana, Conseil Régional Provence-Alpes-Côte d'Azur, National Authority for Scientific Research, Rumanía, Foundation for Fundamental Research on Matter, Holanda, European Commission, Agence Nationale de la Recherche, Francia, Commissariat à l'Énergie Atomique et aux Énergies Alternatives, Francia, Centre National de la Recherche Scientifique, Francia, Bundesministerium für Bildung und Forschung, Alemania, Council on grants of the President of the Russian Federation, Département du Var and Ville de La Seyne-sur-Mer, Instituto Nazionale di Fisica Nucleare, Ageron, M, Aguilar, JA, Al Samarai, I, Albert, A, Andre, M, Anghinolfi, M, Anton, G, Anvar, S, Ardid Ramírez, Miguel, Bou Cabo, Manuel, Camarena Femenia, Francisco, Ferri García, Marcelino, Larosa, Giuseppina, Martínez Mora, Juan Antonio, Universitat Politècnica de València. Departamento de Física Aplicada - Departament de Física Aplicada, Universitat Politècnica de València. Instituto de Investigación para la Gestión Integral de Zonas Costeras - Institut d'Investigació per a la Gestió Integral de Zones Costaneres, Conseil Régional d'Alsace, Ministerio de Ciencia e Innovación; Generalitat Valenciana, Conseil Régional Provence-Alpes-Côte d'Azur, National Authority for Scientific Research, Rumanía, Foundation for Fundamental Research on Matter, Holanda, European Commission, Agence Nationale de la Recherche, Francia, Commissariat à l'Énergie Atomique et aux Énergies Alternatives, Francia, Centre National de la Recherche Scientifique, Francia, Bundesministerium für Bildung und Forschung, Alemania, Council on grants of the President of the Russian Federation, Département du Var and Ville de La Seyne-sur-Mer, Instituto Nazionale di Fisica Nucleare, Ageron, M, Aguilar, JA, Al Samarai, I, Albert, A, Andre, M, Anghinolfi, M, Anton, G, Anvar, S, Ardid Ramírez, Miguel, Bou Cabo, Manuel, Camarena Femenia, Francisco, Ferri García, Marcelino, Larosa, Giuseppina, and Martínez Mora, Juan Antonio
Abstract: The ANTARES telescope has the capability to detect neutrinos produced in astrophysical transient sources. Potential sources include gamma-ray bursts, core collapse supernovae, and flaring active galactic nuclei. To enhance the sensitivity of ANTARES to such sources, a new detection method based on coincident observations of neutrinos and optical signals has been developed. A fast online muon track reconstruction is used to trigger a network of small automatic optical telescopes. Such alerts are generated for special events, such as two or more neutrinos, coincident in time and direction, or single neutrinos of very high energy.
Published: 2012

33. Search for relativistic magnetic monopoles with the ANTARES neutrino telescope

Author: Universitat Politècnica de València. Instituto de Investigación para la Gestión Integral de Zonas Costeras - Institut d'Investigació per a la Gestió Integral de Zones Costaneres, Universitat Politècnica de València. Departamento de Física Aplicada - Departament de Física Aplicada, Conseil Régional d'Alsace, Ministerio de Ciencia e Innovación, Conseil Régional Provence-Alpes-Côte d'Azur, National Authority for Scientific Research, Rumanía, Council on grants of the President of the Russian Federation, Agence Nationale de la Recherche, Francia, European Commission, Commissariat à l'Énergie Atomique et aux Énergies Alternatives, Francia, Generalitat Valenciana, Netherlands Organization for Scientific Research, Bundesministerium für Bildung und Forschung, Alemania, Instituto Nazionale di Fisica Nucleare, Centre National de la Recherche Scientifique, Francia, Département du Var and Ville de La Seyne-sur-Mer, Foundation for Fundamental Research on Matter, Holanda, Adrián Martínez, Silvia, Aguilar, JA, Al Samarai, I, Albert, A, Andre, M, Anghinolfi, M, Anton, G, Anvar, S, Ardid Ramírez, Miguel, Bou Cabo, Manuel, Camarena Femenia, Francisco, Ferri García, Marcelino, Larosa, Giuseppina, Martínez Mora, Juan Antonio, Universitat Politècnica de València. Instituto de Investigación para la Gestión Integral de Zonas Costeras - Institut d'Investigació per a la Gestió Integral de Zones Costaneres, Universitat Politècnica de València. Departamento de Física Aplicada - Departament de Física Aplicada, Conseil Régional d'Alsace, Ministerio de Ciencia e Innovación, Conseil Régional Provence-Alpes-Côte d'Azur, National Authority for Scientific Research, Rumanía, Council on grants of the President of the Russian Federation, Agence Nationale de la Recherche, Francia, European Commission, Commissariat à l'Énergie Atomique et aux Énergies Alternatives, Francia, Generalitat Valenciana, Netherlands Organization for Scientific Research, Bundesministerium für Bildung und Forschung, Alemania, Instituto Nazionale di Fisica Nucleare, Centre National de la Recherche Scientifique, Francia, Département du Var and Ville de La Seyne-sur-Mer, Foundation for Fundamental Research on Matter, Holanda, Adrián Martínez, Silvia, Aguilar, JA, Al Samarai, I, Albert, A, Andre, M, Anghinolfi, M, Anton, G, Anvar, S, Ardid Ramírez, Miguel, Bou Cabo, Manuel, Camarena Femenia, Francisco, Ferri García, Marcelino, Larosa, Giuseppina, and Martínez Mora, Juan Antonio
Abstract: Magnetic monopoles are predicted in various unified gauge models and could be produced at intermediate mass scales. Their detection in a neutrino telescope is facilitated by the large amount of light emitted compared to that from muons. This paper reports on a search for upgoing relativistic magnetic monopoles with the ANTARES neutrino telescope using a data set of 116 days of live time taken from December 2007 to December 2008. The one observed event is consistent with the expected atmospheric neutrino and muon background, leading to a 90% C.L. upper limit on the monopole flux between 1.3 ¿ 10¿17 and 8.9 ¿ 10¿17 cm¿2 s¿1 sr¿1 for monopoles with velocity ß ¿ 0.625.
Published: 2012

34. A method for detection of muon induced electromagnetic showers with the ANTARES detector

Author: Universitat Politècnica de València. Departamento de Física Aplicada - Departament de Física Aplicada, Universitat Politècnica de València. Instituto de Investigación para la Gestión Integral de Zonas Costeras - Institut d'Investigació per a la Gestió Integral de Zones Costaneres, Ministerio de Ciencia e Innovación; Generalitat Valenciana, Agence Nationale de la Recherche, Francia, Bundesministerium für Bildung und Forschung, Alemania, Centre National de la Recherche Scientifique, Francia, Instituto Nazionale di Fisica Nucleare, Foundation for Fundamental Research on Matter, Holanda, Département du Var and Ville de La Seyne-sur-Mer, Commissariat à l'Énergie Atomique et aux Énergies Alternatives, Francia, National Authority for Scientific Research, Rumanía, Council on grants of the President of the Russian Federation, Netherlands Organization for Scientific Research, Aguilar, J. A., Al Samarai, I., Albert, A., Andre, M., Anghinolfi, M., Anton, G., Anvar, S., Ardid Ramírez, Miguel, Jesus, A. C. Assis, Astraatmadja, T., Bou Cabo, Manuel, Camarena Femenia, Francisco, Ferri García, Marcelino, Larosa, Giuseppina, Martínez Mora, Juan Antonio, Universitat Politècnica de València. Departamento de Física Aplicada - Departament de Física Aplicada, Universitat Politècnica de València. Instituto de Investigación para la Gestión Integral de Zonas Costeras - Institut d'Investigació per a la Gestió Integral de Zones Costaneres, Ministerio de Ciencia e Innovación; Generalitat Valenciana, Agence Nationale de la Recherche, Francia, Bundesministerium für Bildung und Forschung, Alemania, Centre National de la Recherche Scientifique, Francia, Instituto Nazionale di Fisica Nucleare, Foundation for Fundamental Research on Matter, Holanda, Département du Var and Ville de La Seyne-sur-Mer, Commissariat à l'Énergie Atomique et aux Énergies Alternatives, Francia, National Authority for Scientific Research, Rumanía, Council on grants of the President of the Russian Federation, Netherlands Organization for Scientific Research, Aguilar, J. A., Al Samarai, I., Albert, A., Andre, M., Anghinolfi, M., Anton, G., Anvar, S., Ardid Ramírez, Miguel, Jesus, A. C. Assis, Astraatmadja, T., Bou Cabo, Manuel, Camarena Femenia, Francisco, Ferri García, Marcelino, Larosa, Giuseppina, and Martínez Mora, Juan Antonio
Abstract: The primary aim of ANTARES is neutrino astronomy with upward going muons created in charged current muon neutrino interactions in the detector and its surroundings. Downward going muons are background for neutrino searches. These muons are the decay products of cosmic-ray collisions in the Earths atmosphere far above the detector. This paper presents a method to identify and count electromagnetic showers induced along atmospheric muon tracks with the ANTARES detector. The method is applied to both cosmic muon data and simulations and its applicability to the reconstruction of muon event energies is demonstrated. © 2012 Elsevier B.V. All rights reserved.
Published: 2012

35. Search for neutrino emission from gamma-ray flaring blazars with the ANTARES telescope

Author: Universitat Politècnica de València. Instituto de Investigación para la Gestión Integral de Zonas Costeras - Institut d'Investigació per a la Gestió Integral de Zones Costaneres, Universitat Politècnica de València. Departamento de Física Aplicada - Departament de Física Aplicada, Conseil Régional d'Alsace, Instituto Nazionale di Fisica Nucleare, Conseil Régional Provence-Alpes-Côte d'Azur, Commissariat à l'Énergie Atomique et aux Énergies Alternatives, Francia, Council on grants of the President of the Russian Federation, National Authority for Scientific Research, Rumanía, Netherlands Organization for Scientific Research, Agence Nationale de la Recherche, Francia, Bundesministerium für Bildung und Forschung, Alemania, Centre National de la Recherche Scientifique, Francia, Ministerio de Ciencia e Innovación, Département du Var and Ville de La Seyne-sur-Mer, Foundation for Fundamental Research on Matter, Holanda, European Regional Development Fund, Generalitat Valenciana, Adrián Martínez, Silvia, Al Samarai, I, Albert, A., André, M, Anghinolfi, M, Anton, G, Anvar, S, Ardid Ramírez, Miguel, Astraatmadja, T., Aubert, J-J, Bou Cabo, Manuel, Camarena Femenia, Francisco, Ferri García, Marcelino, Larosa, Giuseppina, Martínez Mora, Juan Antonio, Universitat Politècnica de València. Instituto de Investigación para la Gestión Integral de Zonas Costeras - Institut d'Investigació per a la Gestió Integral de Zones Costaneres, Universitat Politècnica de València. Departamento de Física Aplicada - Departament de Física Aplicada, Conseil Régional d'Alsace, Instituto Nazionale di Fisica Nucleare, Conseil Régional Provence-Alpes-Côte d'Azur, Commissariat à l'Énergie Atomique et aux Énergies Alternatives, Francia, Council on grants of the President of the Russian Federation, National Authority for Scientific Research, Rumanía, Netherlands Organization for Scientific Research, Agence Nationale de la Recherche, Francia, Bundesministerium für Bildung und Forschung, Alemania, Centre National de la Recherche Scientifique, Francia, Ministerio de Ciencia e Innovación, Département du Var and Ville de La Seyne-sur-Mer, Foundation for Fundamental Research on Matter, Holanda, European Regional Development Fund, Generalitat Valenciana, Adrián Martínez, Silvia, Al Samarai, I, Albert, A., André, M, Anghinolfi, M, Anton, G, Anvar, S, Ardid Ramírez, Miguel, Astraatmadja, T., Aubert, J-J, Bou Cabo, Manuel, Camarena Femenia, Francisco, Ferri García, Marcelino, Larosa, Giuseppina, and Martínez Mora, Juan Antonio
Abstract: The ANTARES telescope is well-suited to detect neutrinos produced in astrophysical transient sources as it can observe a full hemisphere of the sky at all times with a high duty cycle. Radio-loud active galactic nuclei with jets pointing almost directly towards the observer, the so-called blazars, are particularly attractive potential neutrino point sources. The all-sky monitor LAT on board the Fermi satellite probes the variability of any given gamma-ray bright blazar in the sky on time scales of hours to months. Assuming hadronic models, a strong correlation between the gamma-ray and the neutrino fluxes is expected. Selecting a narrow time window on the assumed neutrino production period can significantly reduce the background. An unbinned method based on the minimization of a likelihood ratio was applied to a subsample of data collected in 2008 (61 days live time). By searching for neutrinos during the high state periods of the AGN light curve, the sensitivity to these sources was improved by about a factor of two with respect to a standard time-integrated point source search. First results on the search for neutrinos associated with ten bright and variable Fermi sources are presented.
Published: 2012

36. Search for relativistic magnetic monopoles with the ANTARES neutrino telescope

Author: Universitat Politècnica de València. Instituto de Investigación para la Gestión Integral de Zonas Costeras - Institut d'Investigació per a la Gestió Integral de Zones Costaneres, Universitat Politècnica de València. Departamento de Física Aplicada - Departament de Física Aplicada, Conseil Régional d'Alsace, Ministerio de Ciencia e Innovación, Conseil Régional Provence-Alpes-Côte d'Azur, National Authority for Scientific Research, Rumanía, Council on grants of the President of the Russian Federation, Agence Nationale de la Recherche, Francia, European Commission, Commissariat à l'Énergie Atomique et aux Énergies Alternatives, Francia, Generalitat Valenciana, Netherlands Organization for Scientific Research, Bundesministerium für Bildung und Forschung, Alemania, Instituto Nazionale di Fisica Nucleare, Centre National de la Recherche Scientifique, Francia, Département du Var and Ville de La Seyne-sur-Mer, Foundation for Fundamental Research on Matter, Holanda, Adrián Martínez, Silvia, Aguilar, JA, Al Samarai, I, Albert, A, Andre, M, Anghinolfi, M, Anton, G, Anvar, S, Ardid Ramírez, Miguel, Bou Cabo, Manuel, Camarena Femenia, Francisco, Ferri García, Marcelino, Larosa, Giuseppina, Martínez Mora, Juan Antonio, Universitat Politècnica de València. Instituto de Investigación para la Gestión Integral de Zonas Costeras - Institut d'Investigació per a la Gestió Integral de Zones Costaneres, Universitat Politècnica de València. Departamento de Física Aplicada - Departament de Física Aplicada, Conseil Régional d'Alsace, Ministerio de Ciencia e Innovación, Conseil Régional Provence-Alpes-Côte d'Azur, National Authority for Scientific Research, Rumanía, Council on grants of the President of the Russian Federation, Agence Nationale de la Recherche, Francia, European Commission, Commissariat à l'Énergie Atomique et aux Énergies Alternatives, Francia, Generalitat Valenciana, Netherlands Organization for Scientific Research, Bundesministerium für Bildung und Forschung, Alemania, Instituto Nazionale di Fisica Nucleare, Centre National de la Recherche Scientifique, Francia, Département du Var and Ville de La Seyne-sur-Mer, Foundation for Fundamental Research on Matter, Holanda, Adrián Martínez, Silvia, Aguilar, JA, Al Samarai, I, Albert, A, Andre, M, Anghinolfi, M, Anton, G, Anvar, S, Ardid Ramírez, Miguel, Bou Cabo, Manuel, Camarena Femenia, Francisco, Ferri García, Marcelino, Larosa, Giuseppina, and Martínez Mora, Juan Antonio
Abstract: Magnetic monopoles are predicted in various unified gauge models and could be produced at intermediate mass scales. Their detection in a neutrino telescope is facilitated by the large amount of light emitted compared to that from muons. This paper reports on a search for upgoing relativistic magnetic monopoles with the ANTARES neutrino telescope using a data set of 116 days of live time taken from December 2007 to December 2008. The one observed event is consistent with the expected atmospheric neutrino and muon background, leading to a 90% C.L. upper limit on the monopole flux between 1.3 ¿ 10¿17 and 8.9 ¿ 10¿17 cm¿2 s¿1 sr¿1 for monopoles with velocity ß ¿ 0.625.
Published: 2012

37. Measurement of atmospheric neutrino oscillations with the ANTARES neutrino telescope

Author: Universitat Politècnica de València. Instituto de Investigación para la Gestión Integral de Zonas Costeras - Institut d'Investigació per a la Gestió Integral de Zones Costaneres, Universitat Politècnica de València. Departamento de Física Aplicada - Departament de Física Aplicada, Conseil Régional Provence-Alpes-Côte d'Azur, Ministerio de Ciencia e Innovación, Conseil Régional d'Alsace, Centre National pour la Recherche Scientifique et Technique, Marruecos, Netherlands Organization for Scientific Research, Executive Agency for Higher Education, Scientific Research, Development and Innovation Funding, Rumanía, Council on grants of the President of the Russian Federation, Département du Var and Ville de La Seyne-sur-Mer, European Commission, Centre National de la Recherche Scientifique, Francia, Bundesministerium für Bildung und Forschung, Alemania, Commissariat à l'Énergie Atomique et aux Énergies Alternatives, Francia, Foundation for Fundamental Research on Matter, Holanda, Instituto Nazionale di Fisica Nucleare, Agence de l'Oriental, Marruecos, Generalitat Valenciana, Adrián Martínez, Silvia, Al Samarai, I., Albert, A., Andre, M., Anghinolfi, M., Anton, G., Anvar, S., Ardid Ramírez, Miguel, Astraatmadja, T., Aubert, J. -J., Baret, B., Bou Cabo, Manuel, Ferri García, Marcelino, Larosa, Giuseppina, Martínez Mora, Juan Antonio, Universitat Politècnica de València. Instituto de Investigación para la Gestión Integral de Zonas Costeras - Institut d'Investigació per a la Gestió Integral de Zones Costaneres, Universitat Politècnica de València. Departamento de Física Aplicada - Departament de Física Aplicada, Conseil Régional Provence-Alpes-Côte d'Azur, Ministerio de Ciencia e Innovación, Conseil Régional d'Alsace, Centre National pour la Recherche Scientifique et Technique, Marruecos, Netherlands Organization for Scientific Research, Executive Agency for Higher Education, Scientific Research, Development and Innovation Funding, Rumanía, Council on grants of the President of the Russian Federation, Département du Var and Ville de La Seyne-sur-Mer, European Commission, Centre National de la Recherche Scientifique, Francia, Bundesministerium für Bildung und Forschung, Alemania, Commissariat à l'Énergie Atomique et aux Énergies Alternatives, Francia, Foundation for Fundamental Research on Matter, Holanda, Instituto Nazionale di Fisica Nucleare, Agence de l'Oriental, Marruecos, Generalitat Valenciana, Adrián Martínez, Silvia, Al Samarai, I., Albert, A., Andre, M., Anghinolfi, M., Anton, G., Anvar, S., Ardid Ramírez, Miguel, Astraatmadja, T., Aubert, J. -J., Baret, B., Bou Cabo, Manuel, Ferri García, Marcelino, Larosa, Giuseppina, and Martínez Mora, Juan Antonio
Abstract: The data taken with the ANTARES neutrino telescope from 2007 to 2010, a total live time of 863 days, are used to measure the oscillation parameters of atmospheric neutrinos. Muon tracks are reconstructed with energies as low as 20 GeV. Neutrino oscillations will cause a suppression of vertical upgoing muon neutrinos of such energies crossing the Earth. The parameters determining the oscillation of atmospheric neutrinos are extracted by fitting the event rate as a function of the ratio of the estimated neutrino energy and reconstructed flight path through the Earth. Measurement contours of the oscillation parameters in a two-flavour approximation are derived. Assuming maximal mixing, a mass difference of Delta m(32)(2) = (3.1 +/- 0.9) . 10(-3) eV(2) is obtained, in good agreement with the world average value. (C) 2012 Elsevier B.V. All rights reserved.
Published: 2012

38. Search for neutrino emission from gamma-ray flaring blazars with the ANTARES telescope

Author: Adrián-Martínez, Silvia, Toscano, Simona, Adrián-Martínez, Silvia, and Toscano, Simona
Abstract: The ANTARES telescope is well-suited to detect neutrinos produced in astrophysical transient sources as it can observe a full hemisphere of the sky at all times with a high duty cycle. Radio-loud active galactic nuclei with jets pointing almost directly towards the observer, the so-called blazars, are particularly attractive potential neutrino point sources. The all-sky monitor LAT on board the Fermi satellite probes the variability of any given gamma-ray bright blazar in the sky on time scales of hours to months. Assuming hadronic models, a strong correlation between the gamma-ray and the neutrino fluxes is expected. Selecting a narrow time window on the assumed neutrino production period can significantly reduce the background. An unbinned method based on the minimization of a likelihood ratio was applied to a subsample of data collected in 2008 (61 days live time). By searching for neutrinos during the high state periods of the AGN light curve, the sensitivity to these sources was improved by about a factor of two with respect to a standard time-integrated point source search. First results on the search for neutrinos associated with ten bright and variable Fermi sources are presented.© 2012 Elsevier B.V. All rights reserved., 0, SCOPUS: ar.j, info:eu-repo/semantics/published
Published: 2012

39. Measurement of the group velocity of light in sea water at the ANTARES site

Author: Adrián-Martínez, Silvia, Toscano, Simona, Adrián-Martínez, Silvia, and Toscano, Simona
Abstract: The group velocity of light has been measured at eight different wavelengths between 385 nm and 532 nm in the Mediterranean Sea at a depth of about 2.2 km with the ANTARES optical beacon systems. A parametrisation of the dependence of the refractive index on wavelength based on the salinity, pressure and temperature of the sea water at the ANTARES site is in good agreement with these measurements. © 2012 Elsevier B.V. All rights reserved., 0, SCOPUS: ar.j, info:eu-repo/semantics/published
Published: 2012

40. The ANTARES telescope neutrino alert system

Author: Aguilar Sanchez, Juan Antonio, Toscano, Simona, Aguilar Sanchez, Juan Antonio, and Toscano, Simona
Abstract: The ANTARES telescope has the capability to detect neutrinos produced in astrophysical transient sources. Potential sources include gamma-ray bursts, core collapse supernovae, and flaring active galactic nuclei. To enhance the sensitivity of ANTARES to such sources, a new detection method based on coincident observations of neutrinos and optical signals has been developed. A fast online muon track reconstruction is used to trigger a network of small automatic optical telescopes. Such alerts are generated for special events, such as two or more neutrinos, coincident in time and direction, or single neutrinos of very high energy. © 2011 Elsevier B.V. All rights reserved., 0, SCOPUS: ar.j, info:eu-repo/semantics/published
Published: 2012

41. Design and Development of an acoustic positioning system for a cubic kilometre underwater neutrino telescope

Author: Ardid Ramírez, Miguel, Universitat Politècnica de València. Departamento de Física Aplicada - Departament de Física Aplicada, Larosa ., Giuseppina, Ardid Ramírez, Miguel, Universitat Politècnica de València. Departamento de Física Aplicada - Departament de Física Aplicada, and Larosa ., Giuseppina
Abstract: En los últimos años los telescopios submarinos de neutrinos han cobrado una mayor importancia ya que consisten en un nuevo y único instrumento para observar el Universo. Los neutrinos son partículas sin carga e interactúan muy débilmente con la materia que les rodean, pueden escaparse fácilmente de la fuente que los ha producidos y llegar a La Tierra sin ser desviada por los campo magnético y sin interactuar con otras partículas. Esto implica que los neutrinos pueden traer informaciones astrofísicas que otros mensajeros no pueden aportar y abrir una potencial ventana hacia el Universo. Por otro lado, su baja interacción con la materia impone la necesidad de construir un detector de grandes dimensiones del orden de 1 km3 utilizando volumen de agua o hielo y con muchos sensores ópticos para detectar esta interacción de neutrino de alta energía. Un método para detectar neutrinos es a través de la luz Cherenkov emitida por el muon generado después de una interacción de neutrino. Esta partícula, al atravesar el detector con una velocidad superior a la luz en el medio, genera una débil luz azulada llamada radiación de Cherenkov que es detectada por una red de sensores ópticos (fotomultiplicadores). El tiempo de llegada de la luz a los fotomultiplicadores puede ser utilizado para reconstruir la traza del muon y consecuentemente del neutrino que lo ha producido. La precisión en la reconstrucción de la traza del muon depende de la precisión en la medida del tiempo de llegada de la luz y en la precisión en de la posición de los sensores ópticos en el detector. Por esta razón, en telescopios submarinos es necesario un sistema de posicionamiento acústico (APS) capaz de monitorizar el movimiento de los sensores ópticos con una precisión de ~10 cm. Los estudios realizados están enmarcados dentro de las actividades de calibración de posicionamiento acústico en dos colaboraciones europeas para el diseño, construcción y operación de telescopios submarinos de neutrinos en el Mediter
Published: 2012

42. Design and Development of an acoustic positioning system for a cubic kilometre underwater neutrino telescope

Author: Ardid Ramírez, Miguel, Universitat Politècnica de València. Departamento de Física Aplicada - Departament de Física Aplicada, Larosa ., Giuseppina, Ardid Ramírez, Miguel, Universitat Politècnica de València. Departamento de Física Aplicada - Departament de Física Aplicada, and Larosa ., Giuseppina
Abstract: En los últimos años los telescopios submarinos de neutrinos han cobrado una mayor importancia ya que consisten en un nuevo y único instrumento para observar el Universo. Los neutrinos son partículas sin carga e interactúan muy débilmente con la materia que les rodean, pueden escaparse fácilmente de la fuente que los ha producidos y llegar a La Tierra sin ser desviada por los campo magnético y sin interactuar con otras partículas. Esto implica que los neutrinos pueden traer informaciones astrofísicas que otros mensajeros no pueden aportar y abrir una potencial ventana hacia el Universo. Por otro lado, su baja interacción con la materia impone la necesidad de construir un detector de grandes dimensiones del orden de 1 km3 utilizando volumen de agua o hielo y con muchos sensores ópticos para detectar esta interacción de neutrino de alta energía. Un método para detectar neutrinos es a través de la luz Cherenkov emitida por el muon generado después de una interacción de neutrino. Esta partícula, al atravesar el detector con una velocidad superior a la luz en el medio, genera una débil luz azulada llamada radiación de Cherenkov que es detectada por una red de sensores ópticos (fotomultiplicadores). El tiempo de llegada de la luz a los fotomultiplicadores puede ser utilizado para reconstruir la traza del muon y consecuentemente del neutrino que lo ha producido. La precisión en la reconstrucción de la traza del muon depende de la precisión en la medida del tiempo de llegada de la luz y en la precisión en de la posición de los sensores ópticos en el detector. Por esta razón, en telescopios submarinos es necesario un sistema de posicionamiento acústico (APS) capaz de monitorizar el movimiento de los sensores ópticos con una precisión de ~10 cm. Los estudios realizados están enmarcados dentro de las actividades de calibración de posicionamiento acústico en dos colaboraciones europeas para el diseño, construcción y operación de telescopios submarinos de neutrinos en el Mediter
Published: 2012

43. Search for neutrino emission from gamma-ray flaring blazars with the ANTARES telescope

Author: Centre Tecnològic de Vilanova i la Geltrú, Universitat Politècnica de Catalunya. LAB - Laboratori d'Aplicacions Bioacústiques, Adrián-Martínez, S., Al Samarai, Imen, Albert, A., André, Michel, Anghinolfi, M., Anton, G., Anvar, S., Ardid, M., Astraatmadja, T., Aubert, J.-J., Baret, B., Basa, S., Bertin, V., Biagi, S., Bigongiari, C., Bogazzi, C., Bou-Cabo, M., Bouhou, B., Bouwhuis, M.C., Brunner, J., Busto, J., Camarena, F., Capone, A., Cârloganu, C., Carminati, G., Carr, J., Cecchini, S., Charif, Z., Charvis, Ph., Chiarusi, T., Circella, M., Core, L., Costantini, H., Coyle, P., Creusot, A., Curtil, C., De Bonis, G., Decowski, M.P., Dekeyser, I., Deschamps, A., Distefano, C., Donzaud, C., Dornic, D., Dorosti, Q., Drouhin, D., Eberl, T., Emanuele, U., Enzenhöfer, A., Escoffier, S., Fehn, K., Fermani, P., Ferri, M., Ferry, S., Flaminio, V., Folger, F., Fritsch, U., Fuda, J-L., Galatà, S., Gay, P., Geyer, K., Giacomelli, G., Giordano, V., Gómez-González, J.P., Graf, K., Guillard, G., Halladjian, G., Hallewell, G., van Haren, H., Hartman, J., Heijboer, A.J., Hello, Y., Hernández-Rey, J.J., Herold, B., HöBl, J., Hsu, C.C., de Jong, M., Kadler, M., Kalekin, O., Kappes, A., Katz, U., Kavatsyuk, O., Kooijman, P., Kooper, C., Kouchner, A., Kreykenbohm, I., Kulikovskiy, V., Lahmann, R., Lambard, G., Larosa, G., Lattuada, D., Lim, G., Lo Presti, D., Loehner, H., Loucatos, S., Louis, F., Mangano, S., Marcelin, M., Margiotta, A., Martínez-Mora, J.A., Meli, A., Montaruli, T., Morganti, N., Moscoso, L., Motz, H., Neff, M., Nezri, E., Palioselitis, D., Pavalas, G.E., Payet, K., Payre, P., Petrovic, J., Piatelli, P., Picot-Clemente, N., Popa, V., Pradier, T., Presani, E., Racca, C., Reed, C., Riccobene, G., Richardt, C., Richter, R., Rivière, C., Robert, A., Roensch, K., Rostovtsev, A., Ruiz-Rivas, J., Rujoiu, M., Russo, G.V., Salesa, F., Samtleben, D.F.E., Sapienza, P., Shöck, F., Schuller, J-P., Schüssler, F., Seitz, T., Shanidze, R., Simeone, F., Spies, A., Spurio, M., Steijger, J.J.M., Stolarczyc, Th., Sanchez-Losa, A., Taiuti, M., Tamburini, C., Toscano, S., Vallage, B., Vallée, C., Van Elewyck, V., Vannoni, G., Vecchi, M., Vernin, P., Visser, E., Wagner, S., Wijnker, G., Wilms, J., Wolf, E. de, Yepes, H., Zaborov, D., Zornoza, J.D., Zúñiga, J., Centre Tecnològic de Vilanova i la Geltrú, Universitat Politècnica de Catalunya. LAB - Laboratori d'Aplicacions Bioacústiques, Adrián-Martínez, S., Al Samarai, Imen, Albert, A., André, Michel, Anghinolfi, M., Anton, G., Anvar, S., Ardid, M., Astraatmadja, T., Aubert, J.-J., Baret, B., Basa, S., Bertin, V., Biagi, S., Bigongiari, C., Bogazzi, C., Bou-Cabo, M., Bouhou, B., Bouwhuis, M.C., Brunner, J., Busto, J., Camarena, F., Capone, A., Cârloganu, C., Carminati, G., Carr, J., Cecchini, S., Charif, Z., Charvis, Ph., Chiarusi, T., Circella, M., Core, L., Costantini, H., Coyle, P., Creusot, A., Curtil, C., De Bonis, G., Decowski, M.P., Dekeyser, I., Deschamps, A., Distefano, C., Donzaud, C., Dornic, D., Dorosti, Q., Drouhin, D., Eberl, T., Emanuele, U., Enzenhöfer, A., Escoffier, S., Fehn, K., Fermani, P., Ferri, M., Ferry, S., Flaminio, V., Folger, F., Fritsch, U., Fuda, J-L., Galatà, S., Gay, P., Geyer, K., Giacomelli, G., Giordano, V., Gómez-González, J.P., Graf, K., Guillard, G., Halladjian, G., Hallewell, G., van Haren, H., Hartman, J., Heijboer, A.J., Hello, Y., Hernández-Rey, J.J., Herold, B., HöBl, J., Hsu, C.C., de Jong, M., Kadler, M., Kalekin, O., Kappes, A., Katz, U., Kavatsyuk, O., Kooijman, P., Kooper, C., Kouchner, A., Kreykenbohm, I., Kulikovskiy, V., Lahmann, R., Lambard, G., Larosa, G., Lattuada, D., Lim, G., Lo Presti, D., Loehner, H., Loucatos, S., Louis, F., Mangano, S., Marcelin, M., Margiotta, A., Martínez-Mora, J.A., Meli, A., Montaruli, T., Morganti, N., Moscoso, L., Motz, H., Neff, M., Nezri, E., Palioselitis, D., Pavalas, G.E., Payet, K., Payre, P., Petrovic, J., Piatelli, P., Picot-Clemente, N., Popa, V., Pradier, T., Presani, E., Racca, C., Reed, C., Riccobene, G., Richardt, C., Richter, R., Rivière, C., Robert, A., Roensch, K., Rostovtsev, A., Ruiz-Rivas, J., Rujoiu, M., Russo, G.V., Salesa, F., Samtleben, D.F.E., Sapienza, P., Shöck, F., Schuller, J-P., Schüssler, F., Seitz, T., Shanidze, R., Simeone, F., Spies, A., Spurio, M., Steijger, J.J.M., Stolarczyc, Th., Sanchez-Losa, A., Taiuti, M., Tamburini, C., Toscano, S., Vallage, B., Vallée, C., Van Elewyck, V., Vannoni, G., Vecchi, M., Vernin, P., Visser, E., Wagner, S., Wijnker, G., Wilms, J., Wolf, E. de, Yepes, H., Zaborov, D., Zornoza, J.D., and Zúñiga, J.
Abstract: The ANTARES telescope is well-suited to detect neutrinos produced in astrophysical transient sources as it can observe a full hemisphere of the sky at all times with a high duty cycle. Radio-loud active galactic nuclei with jets pointing almost directly towards the observer, the so-called blazars, are particularly attractive potential neutrino point sources. The all-sky monitor LAT on board the Fermi satellite probes the variability of any given gamma-ray bright blazar in the sky on time scales of hours to months. Assuming hadronic models, a strong correlation between the gamma-ray and the neutrino fluxes is expected. Selecting a narrow time window on the assumed neutrino production period can significantly reduce the background. An unbinned method based on the minimization of a likelihood ratio was applied to a subsample of data collected in 2008 (61 days live time). By searching for neutrinos during the high state periods of the AGN light curve, the sensitivity to these sources was improved by about a factor of two with respect to a standard time-integrated point source search. First results on the search for neutrinos associated with ten bright and variable Fermi sources are presented., Postprint (published version)
Published: 2012

44. Measurement of atmospheric neutrino oscillations with the ANTARES neutrino telescope

Author: Centre Tecnològic de Vilanova i la Geltrú, Universitat Politècnica de Catalunya. LAB - Laboratori d'Aplicacions Bioacústiques, Neff, M., Nezri, E., Palioselitis, D., Giordano, V., Pavalas, G.E., Montaruli, T., Gómez González, J.P., Morganti, M., Gleixner, A, Moscoso, L., Guillard, G., Motz, H., Graf, K., Payet, K., Petrovic, J., Astraatmadja, T., Adrián-Martínez, S., Fritsch, U., Al Samarai, Imen, Fuda, J.-L., Albert, A., Galata, S., André, Michel, Gay, P., Anghinolfi, M., Geyer, K., Anton, G., Giacomelli, G., Anvar, S., Ardid, M., Richardt, C., Richter, R., Reed, C., Riccobene, Giorgio, Folger, F., Presani, E., Flaminio, V., Racca, C., Ferry, s., Popa, V., Fehn, K., Pradier, T., Rivière, C., Eberl, T., Piatelli, P., Emanuele, U., Dorosti, Q., Drouhin, D., Escoffier, S., Enzehöfer, A., Ernenwein, J.-P., Distefano, C., Dornic, D., Donzaud, C., Bonis, G. De, Decowski, M.P., Dekeyser, I., Deschamps, A., Costantini, H., Coyle, Pascal, Creusot, A., Curtil, C., Core, L., Coniglione, R., Circella, M., Charvis, Ph., Chiarusi, T., Cecchini, S., Charif, Z., Cârloganu, C., Carr, J., Busto, J., Capone, A., Wagner, S., Visser, E., Van Elewyck, V., Vallée, C., Vernin, P., Vecchi, M., Meli, A., Taiuti, M., Martinez Mora, J.A., Tamburini, C., Trovato, A., Vallage, B., Loehner, H., Loucatos, S., Lim, G., Lo Presti, D., Marcelin, M., Margiotta, A., Louis, F., Zúñiga, J., Mangano, S., Zornoza, J.D., Yepes, H., Lefèvre, D., Zaborov, D., Lattuada, D., Wilms, J., de Wolf, E., Larosa, G., Wijnker, G., Kreykenbohm, I., Ruiz Rivas, J., Kulikovskiy, V., Rostovtsev, A., Lahmann, R., Russo, G.V., Lambard, G., Rujoiu, M., Sánchez Losa, A., Kooijman, P., Samtleben, D.F.E., Kopper, C., Schmidt, J., Kouchner, A., Sapienza, P., Kappes, A., Kalekin, O., Kavatsyuk, O., Robert, A., Katz, U., Roensch, K., Bouwhuis, M.C., Bouhou, B., Bou-Cabo, M., Spies, A., de Jong, M., Bogazzi, C., Simeone, F., Kadler, M., Bigongiari, C., Shanidze, R., Höbl, J., Biagi, S., Hsu, C.C., Schüssler, F., Bertin, V., Hernández Rey, J.J., Basa, S., Stolarczyk, Th., Herold, B., Baret, B., Steijger, J.J.M., Aubert, J.-J., Spurio, M., Brunner, J., Hello, Y., Heijboer, A.J., Schöck, F., van Haren, H., Schuller, J.-P., Hamal, M., Hallewell, G., Schnabel, J., Centre Tecnològic de Vilanova i la Geltrú, Universitat Politècnica de Catalunya. LAB - Laboratori d'Aplicacions Bioacústiques, Neff, M., Nezri, E., Palioselitis, D., Giordano, V., Pavalas, G.E., Montaruli, T., Gómez González, J.P., Morganti, M., Gleixner, A, Moscoso, L., Guillard, G., Motz, H., Graf, K., Payet, K., Petrovic, J., Astraatmadja, T., Adrián-Martínez, S., Fritsch, U., Al Samarai, Imen, Fuda, J.-L., Albert, A., Galata, S., André, Michel, Gay, P., Anghinolfi, M., Geyer, K., Anton, G., Giacomelli, G., Anvar, S., Ardid, M., Richardt, C., Richter, R., Reed, C., Riccobene, Giorgio, Folger, F., Presani, E., Flaminio, V., Racca, C., Ferry, s., Popa, V., Fehn, K., Pradier, T., Rivière, C., Eberl, T., Piatelli, P., Emanuele, U., Dorosti, Q., Drouhin, D., Escoffier, S., Enzehöfer, A., Ernenwein, J.-P., Distefano, C., Dornic, D., Donzaud, C., Bonis, G. De, Decowski, M.P., Dekeyser, I., Deschamps, A., Costantini, H., Coyle, Pascal, Creusot, A., Curtil, C., Core, L., Coniglione, R., Circella, M., Charvis, Ph., Chiarusi, T., Cecchini, S., Charif, Z., Cârloganu, C., Carr, J., Busto, J., Capone, A., Wagner, S., Visser, E., Van Elewyck, V., Vallée, C., Vernin, P., Vecchi, M., Meli, A., Taiuti, M., Martinez Mora, J.A., Tamburini, C., Trovato, A., Vallage, B., Loehner, H., Loucatos, S., Lim, G., Lo Presti, D., Marcelin, M., Margiotta, A., Louis, F., Zúñiga, J., Mangano, S., Zornoza, J.D., Yepes, H., Lefèvre, D., Zaborov, D., Lattuada, D., Wilms, J., de Wolf, E., Larosa, G., Wijnker, G., Kreykenbohm, I., Ruiz Rivas, J., Kulikovskiy, V., Rostovtsev, A., Lahmann, R., Russo, G.V., Lambard, G., Rujoiu, M., Sánchez Losa, A., Kooijman, P., Samtleben, D.F.E., Kopper, C., Schmidt, J., Kouchner, A., Sapienza, P., Kappes, A., Kalekin, O., Kavatsyuk, O., Robert, A., Katz, U., Roensch, K., Bouwhuis, M.C., Bouhou, B., Bou-Cabo, M., Spies, A., de Jong, M., Bogazzi, C., Simeone, F., Kadler, M., Bigongiari, C., Shanidze, R., Höbl, J., Biagi, S., Hsu, C.C., Schüssler, F., Bertin, V., Hernández Rey, J.J., Basa, S., Stolarczyk, Th., Herold, B., Baret, B., Steijger, J.J.M., Aubert, J.-J., Spurio, M., Brunner, J., Hello, Y., Heijboer, A.J., Schöck, F., van Haren, H., Schuller, J.-P., Hamal, M., Hallewell, G., and Schnabel, J.
Abstract: The data taken with the ANTARES neutrino telescope from 2007 to 2010, a total live time of 863 days, are used to measure the oscillation parameters of atmospheric neutrinos. Muon tracks are reconstructed with energies as low as 20 GeV. Neutrino oscillations will cause a suppression of vertical upgoing muon neutrinos of such energies crossing the Earth. The parameters determining the oscillation of atmospheric neutrinos are extracted by fitting the event rate as a function of the ratio of the estimated neutrino energy and reconstructed flight path through the Earth. Measurement contours of the oscillation parameters in a two-flavour approximation are derived. Assuming maximal mixing, a mass difference of m2 32 = (3.1 ± 0.9) · 10−3 eV2 is obtained, in good agreement with the world average value., Postprint (published version)
Published: 2012

45. Measurement of the group velocity of light in sea water at the ANTARES site

Author: Centre Tecnològic de Vilanova i la Geltrú, Universitat Politècnica de Catalunya. LAB - Laboratori d'Aplicacions Bioacústiques, Motz, H., Neff, M., Nezri, E., Giacomelli, G., Palioselitis, D., McMillan, J.E., Gómez González, J.P., Meli, A., Giordano, V., Montaruli, T., Guillard, G., Moscoso, L., Graf, K., Pavalas, G.E., Payet, K., Assis Jesus, A.C., Adrián-Martínez, S., Folger, F., Al Samarai, Imen, Fritsch, U., Albert, A., Fuda, J.-L., André, Michel, Galata, S., Anghinolfi, M., Gay, P., Anton, G., Geyer, K., Anvar, S., Ardid, M., Racca, C., Reed, C., Pradier, T., Presani, E., Flaminio, V., Picot Clemente, N., Ferri, M., Popa, V., Fermani, P., Petrovic, J., Escoffier, S., Piattelli, P., Riccobene, Giorgio, Payre, P., Drouhin, D., Eberl, T., Dornic, D., Dorosti, Q., Ernenwein, J.-P., Emanuele, U., Enzenhöfer, A., Deschamps, A., Donzaud, C., Distefano, C., Curtil, C., Bonis, G. De, Decowski, M.P., Dekeyser, I., Chiarusi, T., Circella, M., Costantini, H., Coyle, Pascal, Charvis, Ph., Charif, Z., Cecchini, S., Carminati, G., Carr, J., Capone, A., Cârloganu, C., Busto, J., Camarena, F., Bouwhuis, M.C., Brunner, J., Vannoni, G., Van Elewyck, V., Thompson, L.F., Tamburini, C., Vallage, B., Toscano, S., Martinez Mora, J.A., Steijger, J.J.M., Margiotta, A., Stolarczyk, Th., Sánchez Losa, A., Taiuti, M., Lim, G., Lo Presti, D., Lattuada, D., Zúñiga, J., Lefèvre, D., Mangano, S., Zornoza, J.D., Marcelin, M., Zaborov, D., Loehner, H., Yepes, H., Loucatos, S., de Wolf, E., Wijnker, G., Wilms, J., Larosa, G., Vernin, P., Wagner, S., Lamare, P., Vecchi, M., Kouchner, A., Robert, A., Kreykenbohm, I., Rivière, C., Kulikovskiy, V., Rostovtsev, A., Lahmann, R., Roensch, K., Rujoiu, M., Kavatsyuk, O., Ruiz Rivas, J., Kooijman, P., Salesa, F., Kopper, C., Russo, G.V., Kalekin, O., Kadler, M., Katz, U., Richardt, C., Kappes, A., Richter, R., Bou-Cabo, M., Bogazzi, C., Bigongiari, C., Shanidze, R., Hsu, C.C., Bigi, A., Seitz, T., de Jong, M., Biagi, S., Herold, B., Schüssler, F., Bertin, V., Höbl, J., Schuller, J.-P., Basa, S., Hello, Y., Baret, B., Spurio, M., Hernández Rey, J.J., Aubert, J.-J., Spies, A., Astraatmadja, T., Simeone, F., Bouhou, B., Heijboer, A.J., Hartman, J., Sapienza, P., van Haren, H., Schöck, F., Hallewell, G., Halladjian, G., Samtleben, D.F.E., Centre Tecnològic de Vilanova i la Geltrú, Universitat Politècnica de Catalunya. LAB - Laboratori d'Aplicacions Bioacústiques, Motz, H., Neff, M., Nezri, E., Giacomelli, G., Palioselitis, D., McMillan, J.E., Gómez González, J.P., Meli, A., Giordano, V., Montaruli, T., Guillard, G., Moscoso, L., Graf, K., Pavalas, G.E., Payet, K., Assis Jesus, A.C., Adrián-Martínez, S., Folger, F., Al Samarai, Imen, Fritsch, U., Albert, A., Fuda, J.-L., André, Michel, Galata, S., Anghinolfi, M., Gay, P., Anton, G., Geyer, K., Anvar, S., Ardid, M., Racca, C., Reed, C., Pradier, T., Presani, E., Flaminio, V., Picot Clemente, N., Ferri, M., Popa, V., Fermani, P., Petrovic, J., Escoffier, S., Piattelli, P., Riccobene, Giorgio, Payre, P., Drouhin, D., Eberl, T., Dornic, D., Dorosti, Q., Ernenwein, J.-P., Emanuele, U., Enzenhöfer, A., Deschamps, A., Donzaud, C., Distefano, C., Curtil, C., Bonis, G. De, Decowski, M.P., Dekeyser, I., Chiarusi, T., Circella, M., Costantini, H., Coyle, Pascal, Charvis, Ph., Charif, Z., Cecchini, S., Carminati, G., Carr, J., Capone, A., Cârloganu, C., Busto, J., Camarena, F., Bouwhuis, M.C., Brunner, J., Vannoni, G., Van Elewyck, V., Thompson, L.F., Tamburini, C., Vallage, B., Toscano, S., Martinez Mora, J.A., Steijger, J.J.M., Margiotta, A., Stolarczyk, Th., Sánchez Losa, A., Taiuti, M., Lim, G., Lo Presti, D., Lattuada, D., Zúñiga, J., Lefèvre, D., Mangano, S., Zornoza, J.D., Marcelin, M., Zaborov, D., Loehner, H., Yepes, H., Loucatos, S., de Wolf, E., Wijnker, G., Wilms, J., Larosa, G., Vernin, P., Wagner, S., Lamare, P., Vecchi, M., Kouchner, A., Robert, A., Kreykenbohm, I., Rivière, C., Kulikovskiy, V., Rostovtsev, A., Lahmann, R., Roensch, K., Rujoiu, M., Kavatsyuk, O., Ruiz Rivas, J., Kooijman, P., Salesa, F., Kopper, C., Russo, G.V., Kalekin, O., Kadler, M., Katz, U., Richardt, C., Kappes, A., Richter, R., Bou-Cabo, M., Bogazzi, C., Bigongiari, C., Shanidze, R., Hsu, C.C., Bigi, A., Seitz, T., de Jong, M., Biagi, S., Herold, B., Schüssler, F., Bertin, V., Höbl, J., Schuller, J.-P., Basa, S., Hello, Y., Baret, B., Spurio, M., Hernández Rey, J.J., Aubert, J.-J., Spies, A., Astraatmadja, T., Simeone, F., Bouhou, B., Heijboer, A.J., Hartman, J., Sapienza, P., van Haren, H., Schöck, F., Hallewell, G., Halladjian, G., and Samtleben, D.F.E.
Abstract: The group velocity of light has been measured at eight different wavelengths between 385 nm and 532 nm in the Mediterranean Sea at a depth of about 2.2 km with the ANTARES optical beacon systems. A parametrisation of the dependence of the refractive index on wavelength based on the salinity, pressure and temperature of the sea water at the ANTARES site is in good agreement with these measurements., Postprint (published version)
Published: 2012

46. AMADEUS the acoustic neutrino detection test system of the ANTARES deep-sea neutrino telescope

Author: Aguilar Sanchez, Juan Antonio, Toscano, Simona, Aguilar Sanchez, Juan Antonio, and Toscano, Simona
Abstract: The AMADEUS (ANTARES Modules for the Acoustic Detection Under the Sea) system which is described in this article aims at the investigation of techniques for acoustic detection of neutrinos in the deep sea. It is integrated into the ANTARES neutrino telescope in the Mediterranean Sea. Its acoustic sensors, installed at water depths between 2050 and 2300 m, employ piezo-electric elements for the broad-band recording of signals with frequencies ranging up to 125 kHz. The typical sensitivity of the sensors is around -145 dB re 1 V/μPa (including preamplifier). Completed in May 2008, AMADEUS consists of six "acoustic clusters", each comprising six acoustic sensors that are arranged at distances of roughly 1 m from each other. Two vertical mechanical structures (so-called lines) of the ANTARES detector host three acoustic clusters each. Spacings between the clusters range from 14.5 to 340 m. Each cluster contains custom-designed electronics boards to amplify and digitise the acoustic signals from the sensors. An on-shore computer cluster is used to process and filter the data stream and store the selected events. The daily volume of recorded data is about 10 GB. The system is operating continuously and automatically, requiring only little human intervention. AMADEUS allows for extensive studies of both transient signals and ambient noise in the deep sea, as well as signal correlations on several length scales and localisation of acoustic point sources. Thus the system is excellently suited to assess the background conditions for the measurement of the bipolar pulses expected to originate from neutrino interactions. © 2010 Elsevier B.V. All rights reserved., 0, SCOPUS: ar.j, info:eu-repo/semantics/published
Published: 2011

47. Search for a diffuse flux of high-energy νμ with the ANTARES neutrino telescope

Author: Aguilar Sanchez, Juan Antonio, Toscano, Simona, Aguilar Sanchez, Juan Antonio, and Toscano, Simona
Abstract: A search for a diffuse flux of astrophysical muon neutrinos, using data collected by the ANTARES neutrino telescope is presented. A (0.83×2π) sr sky was monitored for a total of 334 days of equivalent live time. The searched signal corresponds to an excess of events, produced by astrophysical sources, over the expected atmospheric neutrino background. The observed number of events is found compatible with the background expectation. Assuming an E-2 flux spectrum, a 90% c.l. upper limit on the diffuse νμ flux of E2Φ90%=5.3×10-8 GeVcm-2s-1sr-11 in the energy range 20 TeV-2.5 PeV is obtained. Other signal models with different energy spectra are also tested and some rejected. © 2010 Elsevier B.V., 0, SCOPUS: ar.j, info:eu-repo/semantics/published
Published: 2011

48. AMADEUS - The acoustic neutrino detection test system of the ANTARES deep-sea neutrino telescope

Author: Universitat Politècnica de València. Departamento de Física Aplicada - Departament de Física Aplicada, Universitat Politècnica de València. Instituto de Investigación para la Gestión Integral de Zonas Costeras - Institut d'Investigació per a la Gestió Integral de Zones Costaneres, Conseil Régional d'Alsace, Ministerio de Ciencia e Innovación, Conseil Régional Provence-Alpes-Côte d'Azur, Agence Nationale de la Recherche, Francia, Bundesministerium für Bildung und Forschung, Alemania, Centre National de la Recherche Scientifique, Francia, Foundation for Fundamental Research on Matter, Holanda, National Authority for Scientific Research, Rumanía, Département du Var and Ville de La Seyne-sur-Mer, Generalitat Valenciana, Council on grants of the President of the Russian Federation, Instituto Nazionale di Fisica Nucleare, European Commission, Netherlands Organization for Scientific Research, Commissariat à l'Énergie Atomique et aux Énergies Alternatives, Francia, Aguilar, J. A., Al Samarai, I., Albert, A., Anghinolfi, M., Anton, G., Anvar, S., Ardid Ramírez, Miguel, Jesus, A. C. Assis, Astraatmadja, T., Aubert, J. -J., Auer, R., Bou Cabo, Manuel, Camarena Femenia, Francisco, Larosa, Giuseppina, Martínez Mora, Juan Antonio, Universitat Politècnica de València. Departamento de Física Aplicada - Departament de Física Aplicada, Universitat Politècnica de València. Instituto de Investigación para la Gestión Integral de Zonas Costeras - Institut d'Investigació per a la Gestió Integral de Zones Costaneres, Conseil Régional d'Alsace, Ministerio de Ciencia e Innovación, Conseil Régional Provence-Alpes-Côte d'Azur, Agence Nationale de la Recherche, Francia, Bundesministerium für Bildung und Forschung, Alemania, Centre National de la Recherche Scientifique, Francia, Foundation for Fundamental Research on Matter, Holanda, National Authority for Scientific Research, Rumanía, Département du Var and Ville de La Seyne-sur-Mer, Generalitat Valenciana, Council on grants of the President of the Russian Federation, Instituto Nazionale di Fisica Nucleare, European Commission, Netherlands Organization for Scientific Research, Commissariat à l'Énergie Atomique et aux Énergies Alternatives, Francia, Aguilar, J. A., Al Samarai, I., Albert, A., Anghinolfi, M., Anton, G., Anvar, S., Ardid Ramírez, Miguel, Jesus, A. C. Assis, Astraatmadja, T., Aubert, J. -J., Auer, R., Bou Cabo, Manuel, Camarena Femenia, Francisco, Larosa, Giuseppina, and Martínez Mora, Juan Antonio
Abstract: The AMADEUS (ANTARES Modules for the Acoustic Detection Under the Sea) system which is described in this article aims at the investigation of techniques for acoustic detection of neutrinos in the deep sea. It is integrated into the ANTARES neutrino telescope in the Mediterranean Sea. Its acoustic sensors, installed at water depths between 2050 and 2300 m, employ piezo-electric elements for the broad-band recording of signals with frequencies ranging up to 125 kHz. The typical sensitivity of the sensors is around - 145 dB re 1 V/mu Pa (including preamplifier). Completed in May 2008, AMADEUS consists of six "acoustic clusters", each comprising six acoustic sensors that are arranged at distances of roughly 1 m from each other. Two vertical mechanical structures (so-called lines) of the ANTARES detector host three acoustic clusters each. Spacings between the clusters range from 14.5 to 340 m. Each cluster contains custom-designed electronics boards to amplify and digitise the acoustic signals from the sensors. An on-shore computer cluster is used to process and filter the data stream and store the selected events. The daily volume of recorded data is about 10 GB. The system is operating continuously and automatically, requiring only little human intervention. AMADEUS allows for extensive studies of both transient signals and ambient noise in the deep sea, as well as signal correlations on several length scales and localisation of acoustic point sources. Thus the system is excellently suited to assess the background conditions for the measurement of the bipolar pulses expected to originate from neutrino interactions. (C) 2010 Elsevier B.V. All rights reserved.
Published: 2011

49. Time calibration of the ANTARES neutrino telescope

Author: Universitat Politècnica de València. Departamento de Física Aplicada - Departament de Física Aplicada, Universitat Politècnica de València. Instituto de Investigación para la Gestión Integral de Zonas Costeras - Institut d'Investigació per a la Gestió Integral de Zones Costaneres, Conseil Régional d'Alsace, Ministerio de Ciencia e Innovación, Conseil Régional Provence-Alpes-Côte d'Azur, Bundesministerium für Bildung und Forschung, Alemania, Instituto Nazionale di Fisica Nucleare, Département du Var and Ville de La Seyne-sur-Mer, Council on grants of the President of the Russian Federation, National Authority for Scientific Research, Rumanía, Generalitat Valenciana, European Commission, Foundation for Fundamental Research on Matter, Holanda, Netherlands Organization for Scientific Research, Agence Nationale de la Recherche, Francia, Commissariat à l'Énergie Atomique et aux Énergies Alternatives, Francia, Centre National de la Recherche Scientifique, Francia, Aguilar, J.A, Al Samarai, I, Albert, A., André, M., Anghinolfi, M., Anton, G, Anvar, S., Ardid Ramírez, Miguel, Bou Cabo, Manuel, Camarena Femenia, Francisco, Larosa, Giuseppina, Martínez Mora, Juan Antonio, Universitat Politècnica de València. Departamento de Física Aplicada - Departament de Física Aplicada, Universitat Politècnica de València. Instituto de Investigación para la Gestión Integral de Zonas Costeras - Institut d'Investigació per a la Gestió Integral de Zones Costaneres, Conseil Régional d'Alsace, Ministerio de Ciencia e Innovación, Conseil Régional Provence-Alpes-Côte d'Azur, Bundesministerium für Bildung und Forschung, Alemania, Instituto Nazionale di Fisica Nucleare, Département du Var and Ville de La Seyne-sur-Mer, Council on grants of the President of the Russian Federation, National Authority for Scientific Research, Rumanía, Generalitat Valenciana, European Commission, Foundation for Fundamental Research on Matter, Holanda, Netherlands Organization for Scientific Research, Agence Nationale de la Recherche, Francia, Commissariat à l'Énergie Atomique et aux Énergies Alternatives, Francia, Centre National de la Recherche Scientifique, Francia, Aguilar, J.A, Al Samarai, I, Albert, A., André, M., Anghinolfi, M., Anton, G, Anvar, S., Ardid Ramírez, Miguel, Bou Cabo, Manuel, Camarena Femenia, Francisco, Larosa, Giuseppina, and Martínez Mora, Juan Antonio
Abstract: The ANTARES deep-sea neutrino telescope comprises a three-dimensional array of photomultipliers to detect the Cherenkov light induced by upgoing relativistic charged particles originating from neutrino interactions in the vicinity of the detector. The large scattering length of light in the deep sea facilitates an angular resolution of a few tenths of a degree for neutrino energies exceeding 10 TeV. In order to achieve this optimal performance, the time calibration procedures should ensure a relative time calibration between the photomultipliers at the level of ~1 ns. The methods developed to attain this level of precision are described.
Published: 2011

50. Search for a diffuse flux of high-energy neutrino mu with the ANTARES neutrino telescope

Author: Universitat Politècnica de València. Departamento de Física Aplicada - Departament de Física Aplicada, Universitat Politècnica de València. Instituto de Investigación para la Gestión Integral de Zonas Costeras - Institut d'Investigació per a la Gestió Integral de Zones Costaneres, Centre National de la Recherche Scientifique, Francia, Commissariat à l'Énergie Atomique et aux Énergies Alternatives, Francia, Agence Nationale de la Recherche, Francia, European Commission, European Regional Development Fund, Conseil Régional d'Alsace, Conseil Régional Provence-Alpes-Côte d'Azur, Département du Var and Ville de La Seyne-sur-Mer, Bundesministerium für Bildung und Forschung, Alemania, Instituto Nazionale di Fisica Nucleare, Foundation for Fundamental Research on Matter, Holanda, Netherlands Organization for Scientific Research, Council on grants of the President of the Russian Federation, National Authority for Scientific Research, Rumanía, Ministerio de Ciencia e Innovación, Generalitat Valenciana, Aguilar, J. A., Al Samarai, I., Albert, A., André, M., Anghinolfi, M., Anton, G., Anvar, S., Ardid Ramírez, Miguel, Assis Jesus, A.C., Astraatmadja, T., Aubert, J-J., Bou Cabo, Manuel, Camarena Femenia, Francisco, Larosa, Giuseppina, Martínez Mora, Juan Antonio, Universitat Politècnica de València. Departamento de Física Aplicada - Departament de Física Aplicada, Universitat Politècnica de València. Instituto de Investigación para la Gestión Integral de Zonas Costeras - Institut d'Investigació per a la Gestió Integral de Zones Costaneres, Centre National de la Recherche Scientifique, Francia, Commissariat à l'Énergie Atomique et aux Énergies Alternatives, Francia, Agence Nationale de la Recherche, Francia, European Commission, European Regional Development Fund, Conseil Régional d'Alsace, Conseil Régional Provence-Alpes-Côte d'Azur, Département du Var and Ville de La Seyne-sur-Mer, Bundesministerium für Bildung und Forschung, Alemania, Instituto Nazionale di Fisica Nucleare, Foundation for Fundamental Research on Matter, Holanda, Netherlands Organization for Scientific Research, Council on grants of the President of the Russian Federation, National Authority for Scientific Research, Rumanía, Ministerio de Ciencia e Innovación, Generalitat Valenciana, Aguilar, J. A., Al Samarai, I., Albert, A., André, M., Anghinolfi, M., Anton, G., Anvar, S., Ardid Ramírez, Miguel, Assis Jesus, A.C., Astraatmadja, T., Aubert, J-J., Bou Cabo, Manuel, Camarena Femenia, Francisco, Larosa, Giuseppina, and Martínez Mora, Juan Antonio
Abstract: [EN] A search for a diffuse flux of astrophysical muon neutrinos, using data collected by the ANTARES neutrino telescope is presented. A (0.83×2¿) sr sky was monitored for a total of 334 days of equivalent live time. The searched signal corresponds to an excess of events, produced by astrophysical sources, over the expected atmospheric neutrino background. The observed number of events is found compatible with the background expectation. Assuming an E -2 flux spectrum, a 90% c.l. upper limit on the diffuse ¿ ¿ flux of E 2¿90%=5.3×10 -8 GeVcm -2s -1sr -11 in the energy range 20 TeV-2.5 PeV is obtained. Other signal models with different energy spectra are also tested and some rejected. © 2010 Elsevier B.V.
Published: 2011

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