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1. Model-independent search for neutrino sources with the ANTARES neutrino telescope

Author: Universitat Politècnica de València. Departamento de Física Aplicada - Departament de Física Aplicada, A*Midex Foundation, European Commission, Region Ile-de-France, Generalitat Valenciana, Conseil Régional d'Alsace, Ministerio de Economía y Empresa, Université Sorbonne Paris Cité, Institut Universitaire de France, European Regional Development Fund, Instituto Nazionale di Fisica Nucleare, Ministerio de Economía y Competitividad, Conseil Régional Provence-Alpes-Côte d'Azur, Netherlands Organization for Scientific Research, Département du Var and Ville de La Seyne-sur-Mer, National Authority for Scientific Research, Rumanía, Bundesministerium für Bildung und Forschung, Alemania, Centre National de la Recherche Scientifique, Francia, 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, Laboratoire d'Excellence OCEVU (Origines, Constituants & ÉVolution de l'Univers), Ministère de l'Education Nationale, de la Formation professionnelle, de l'Enseignement Supérieur et de la Recherche Scientifique, Marruecos, 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., Bormuth, R., Bourret, S., Bouwhuis, M. C., Felis-Enguix, Iván, Martínez Mora, Juan Antonio, Saldaña-Coscollar, María, Universitat Politècnica de València. Departamento de Física Aplicada - Departament de Física Aplicada, A*Midex Foundation, European Commission, Region Ile-de-France, Generalitat Valenciana, Conseil Régional d'Alsace, Ministerio de Economía y Empresa, Université Sorbonne Paris Cité, Institut Universitaire de France, European Regional Development Fund, Instituto Nazionale di Fisica Nucleare, Ministerio de Economía y Competitividad, Conseil Régional Provence-Alpes-Côte d'Azur, Netherlands Organization for Scientific Research, Département du Var and Ville de La Seyne-sur-Mer, National Authority for Scientific Research, Rumanía, Bundesministerium für Bildung und Forschung, Alemania, Centre National de la Recherche Scientifique, Francia, 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, Laboratoire d'Excellence OCEVU (Origines, Constituants & ÉVolution de l'Univers), Ministère de l'Education Nationale, de la Formation professionnelle, de l'Enseignement Supérieur et de la Recherche Scientifique, Marruecos, 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., Bormuth, R., Bourret, S., Bouwhuis, M. C., Felis-Enguix, Iván, Martínez Mora, Juan Antonio, and Saldaña-Coscollar, María
Abstract: [EN] A novel method to analyse the spatial distribution of neutrino candidates recorded with the ANTARES neutrino telescope is introduced, searching for an excess of neutrinos in a region of arbitrary size and shape from any direction in the sky. Techniques originating from the domains of machine learning, pat- tern recognition and image processing are used to purify the sample of neutrino candidates and for the analysis of the obtained skymap. In contrast to a dedicated search for a speci¿c neutrino emission model, this approach is sensitive to a wide range of possible morphologies of potential sources of high-energy neutrino emission. The application of these methods to ANTARES data yields a large-scale excess with a post-trial signi¿cance of 2.5¿ . Applied to public data from IceCube in its IC40 con¿guration, an excess consistent with the results from ANTARES is observed with a post-trial signi¿cance of 2.1¿ .
Published: 2020

2. Search for Multimessenger Sources of Gravitational Waves and High-energy Neutrinos with Advanced LIGO during Its First Observing Run, ANTARES, and IceCube

Author: Universitat Politècnica de València. Departamento de Física Aplicada - Departament de Física Aplicada, Royal Society, Reino Unido, Villum Foundation, Kavli Foundation, Leverhulme Trust, A*Midex Foundation, Max Planck Society, European Commission, Govern Illes Balears, Region Ile-de-France, Generalitat Valenciana, U.S. Department of Energy, Conseil Régional d'Alsace, Australian Research Council, Danish National Research Foundation, Deutsche Forschungsgemeinschaft, National Science Centre, Polonia, Canada Foundation for Innovation, Université Sorbonne Paris Cité, Institut Universitaire de France, National Science Foundation, EEUU, Research Grant Council, Hong Kong, Swiss National Science Foundation, European Regional Development Fund, Hungarian Scientific Research Fund, Knut and Alice Wallenberg Foundation, Belgian Federal Science Policy Office, National Research Foundation of Korea, Russian Foundation for Basic Research, Instituto Nazionale di Fisica Nucleare, Ministerio de Economía y Competitividad, Research Foundation Flanders, Ministry of Science and Technology, Taiwan, Fonds de la Recherche Scientifique, Belgica, Japan Society for the Promotion of Science, Conseil Régional Provence-Alpes-Côte d'Azur, National Natural Science Foundation of China, Helmholtz Association of German Research Centers, Netherlands Organization for Scientific Research, Département du Var and Ville de La Seyne-sur-Mer, National Authority for Scientific Research, Rumanía, Council of Scientific and Industrial Research, India, Bundesministerium für Bildung und Forschung, Alemania, Centre National de la Recherche Scientifique, Francia, Science and Technology Facilities Council, Reino Unido, Natural Sciences and Engineering Research Council of Canada, Council on grants of the President of the Russian Federation, Ministerio da Ciencia, Tecnologia, Inovacoes e Comunicacoes, Brasil, Commissariat à l'Énergie Atomique et aux Énergies Alternatives, Francia, Laboratoire d'Excellence OCEVU (Origines, Constituants & ÉVolution de l'Univers), Ministère de l'Education Nationale, de la Formation professionnelle, de l'Enseignement Supérieur et de la Recherche Scientifique, Marruecos, Albert, A., Andre, M., Anghinolfi, M., Ardid Ramírez, Miguel, Aubert, J.J., Aublin, J., Avgitas, T., Baret, B., Barrios-Marti, J., Basa, S., Belhorma, B., Bertin, V., Biagi, S., Bormuth, R., Boumaaza, J., Martínez Mora, Juan Antonio, Saldaña-Coscollar, María, Universitat Politècnica de València. Departamento de Física Aplicada - Departament de Física Aplicada, Royal Society, Reino Unido, Villum Foundation, Kavli Foundation, Leverhulme Trust, A*Midex Foundation, Max Planck Society, European Commission, Govern Illes Balears, Region Ile-de-France, Generalitat Valenciana, U.S. Department of Energy, Conseil Régional d'Alsace, Australian Research Council, Danish National Research Foundation, Deutsche Forschungsgemeinschaft, National Science Centre, Polonia, Canada Foundation for Innovation, Université Sorbonne Paris Cité, Institut Universitaire de France, National Science Foundation, EEUU, Research Grant Council, Hong Kong, Swiss National Science Foundation, European Regional Development Fund, Hungarian Scientific Research Fund, Knut and Alice Wallenberg Foundation, Belgian Federal Science Policy Office, National Research Foundation of Korea, Russian Foundation for Basic Research, Instituto Nazionale di Fisica Nucleare, Ministerio de Economía y Competitividad, Research Foundation Flanders, Ministry of Science and Technology, Taiwan, Fonds de la Recherche Scientifique, Belgica, Japan Society for the Promotion of Science, Conseil Régional Provence-Alpes-Côte d'Azur, National Natural Science Foundation of China, Helmholtz Association of German Research Centers, Netherlands Organization for Scientific Research, Département du Var and Ville de La Seyne-sur-Mer, National Authority for Scientific Research, Rumanía, Council of Scientific and Industrial Research, India, Bundesministerium für Bildung und Forschung, Alemania, Centre National de la Recherche Scientifique, Francia, Science and Technology Facilities Council, Reino Unido, Natural Sciences and Engineering Research Council of Canada, Council on grants of the President of the Russian Federation, Ministerio da Ciencia, Tecnologia, Inovacoes e Comunicacoes, Brasil, Commissariat à l'Énergie Atomique et aux Énergies Alternatives, Francia, Laboratoire d'Excellence OCEVU (Origines, Constituants & ÉVolution de l'Univers), Ministère de l'Education Nationale, de la Formation professionnelle, de l'Enseignement Supérieur et de la Recherche Scientifique, Marruecos, Albert, A., Andre, M., Anghinolfi, M., Ardid Ramírez, Miguel, Aubert, J.J., Aublin, J., Avgitas, T., Baret, B., Barrios-Marti, J., Basa, S., Belhorma, B., Bertin, V., Biagi, S., Bormuth, R., Boumaaza, J., Martínez Mora, Juan Antonio, and Saldaña-Coscollar, María
Abstract: [EN] Astrophysical sources of gravitational waves, such as binary neutron star and black hole mergers or core-collapse supernovae, can drive relativistic outflows, giving rise to non-thermal high-energy emission. High-energy neutrinos are signatures of such outflows. The detection of gravitational waves and high-energy neutrinos from common sources could help establish the connection between the dynamics of the progenitor and the properties of the out¿ow. We searched for associated emission of gravitational waves and high-energy neutrinos from astrophysical transients with minimal assumptions using data from Advanced LIGO from its first observing run O1, and data from the ANTARES and IceCube neutrino observatories from the same time period. We focused on candidate events whose astrophysical origins could not be determined from a single messenger. We found no significant coincident candidate, which we used to constrain the rate density of astrophysical sources dependent on their gravitational-wave and neutrino emission processes.
Published: 2019

3. The search for high-energy neutrinos coincident with fast radio bursts with the ANTARES neutrino telescope

Author: Universitat Politècnica de València. Departamento de Física Aplicada - Departament de Física Aplicada, A*Midex Foundation, Region Ile-de-France, Generalitat Valenciana, Conseil Régional d'Alsace, Ministerio de Economía y Empresa, Université Sorbonne Paris Cité, Institut Universitaire de France, European Regional Development Fund, Instituto Nazionale di Fisica Nucleare, Ministerio de Economía y Competitividad, Conseil Régional Provence-Alpes-Côte d'Azur, Netherlands Organization for Scientific Research, Département du Var and Ville de La Seyne-sur-Mer, 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, 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'Education Nationale, de la Formation professionnelle, de l'Enseignement Supérieur et de la Recherche Scientifique, Marruecos, Albert, A., Andre, M., Anghinolfi, M., Anton, G., Ardid Ramírez, Miguel, Aubert, J.J., Aublin, J., Avgitas, T., Baret, B., Barrios-Marti, J., Basa, S., Belhorma, B., Bertin, V., Biagi, S., Bormuth, R., Felis-Enguix, Iván, Martínez Mora, Juan Antonio, Saldaña-Coscollar, María, Universitat Politècnica de València. Departamento de Física Aplicada - Departament de Física Aplicada, A*Midex Foundation, Region Ile-de-France, Generalitat Valenciana, Conseil Régional d'Alsace, Ministerio de Economía y Empresa, Université Sorbonne Paris Cité, Institut Universitaire de France, European Regional Development Fund, Instituto Nazionale di Fisica Nucleare, Ministerio de Economía y Competitividad, Conseil Régional Provence-Alpes-Côte d'Azur, Netherlands Organization for Scientific Research, Département du Var and Ville de La Seyne-sur-Mer, 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, 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'Education Nationale, de la Formation professionnelle, de l'Enseignement Supérieur et de la Recherche Scientifique, Marruecos, Albert, A., Andre, M., Anghinolfi, M., Anton, G., Ardid Ramírez, Miguel, Aubert, J.J., Aublin, J., Avgitas, T., Baret, B., Barrios-Marti, J., Basa, S., Belhorma, B., Bertin, V., Biagi, S., Bormuth, R., Felis-Enguix, Iván, Martínez Mora, Juan Antonio, and Saldaña-Coscollar, María
Abstract: [EN] In the past decade, a new class of bright transient radio sources with millisecond duration has been discovered. The origin of these so-called fast radio bursts (FRBs) is still a mystery, despite the growing observational efforts made by various multiwavelength and multimessenger facilities. To date, many models have been proposed to explain FRBs, but neither the progenitors nor the radiative and the particle acceleration processes at work have been clearly identified. In this paper, we assess whether hadronic processes may occur in the vicinity of the FRB source. If they do, FRBs may contribute to the high-energy cosmic-ray and neutrino fluxes. A search for these hadronic signatures was carried out using the ANTARES neutrino telescope. The analysis consists in looking for high-energy neutrinos, in the TeV-PeV regime, that are spatially and temporally coincident with the detected FRBs. Most of the FRBs discovered in the period 2013-2017 were in the field of view of the ANTARES detector, which is sensitive mostly to events originating from the Southern hemisphere. From this period, 12 FRBs were selected and no coincident neutrino candidate was observed. Upper limits on the per-burst neutrino fluence were derived using a power-law spectrum, dN/DE nu proportional to E-nu(-gamma), for the incoming neutrino flux, assuming spectral indexes gamma = 1.0, 2.0, 2.5. Finally, the neutrino energy was constrained by computing the total energy radiated in neutrinos, assuming different distances for the FRBs. Constraints on the neutrino fluence and on the energy released were derived from the associated null results.
Published: 2019

4. Acoustic parametric techniques for neutrino telescopes

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 Politécnica Superior de Gandia - Escola Politècnica Superior de Gandia, Universitat Politècnica de València. Departamento de Física Aplicada - Departament de Física Aplicada, Ardid Ramírez, Miguel, Tortosa, Dídac D., Llorens Alvarez, Carlos David, 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 Politécnica Superior de Gandia - Escola Politècnica Superior de Gandia, Universitat Politècnica de València. Departamento de Física Aplicada - Departament de Física Aplicada, Ardid Ramírez, Miguel, Tortosa, Dídac D., Llorens Alvarez, Carlos David, Martínez Mora, Juan Antonio, and Saldaña-Coscollar, María
Abstract: [EN] In this work, we present a compact transmitter array based on the parametric acoustic sources effect able to reproduce the acoustic signature of an Ultra-High Energy neutrino interaction in water. We also propose to use directive transducers using the parametric technique for the characterization of piezo-ceramic sensors contained in the KM3NeT DOMs. This technique can minimize the need for an anechoic tank.
Published: 2019

5. Long-term monitoring of the ANTARES optical module efficiencies using K-40 decays in sea water

Author: Albert, A., Andre, M., Anghinolfi, M., Anton, G., Ardid Ramírez, Miguel, Aubert, J.-J., Aublin, J., Avgitas, T., Baret, B., Barrios-Marti, J., Basa, S., Belhorma, B., Bertin, V., Biagi, S., Bormuth, R., Felis-Enguix, Iván, Martínez Mora, Juan Antonio, and Saldaña-Coscollar, María
Subjects: Cherenkov light, Astrophysics::High Energy Astrophysical Phenomena, FISICA APLICADA, Astrophysics::Instrumentation and Methods for Astrophysics, Long term monitoring, 40K decays
Abstract: [EN] Cherenkov light induced by radioactive decay products is one of the major sources of background light for deep-sea neutrino telescopes such as ANTARES. These decays are at the same time a powerful calibration source. Using data collected by the ANTARES neutrino telescope from mid 2008 to 2017, the time evolution of the photon detection ef¿ciency of optical modules is studied. A modest loss of only 20% in 9 years is observed. The relative time calibration between adjacent modules is derived as well.
Published: 2018
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6. The Search for Neutrinos from TXS 0506+056 with the ANTARES Telescope

Author: Universitat Politècnica de València. Departamento de Física Aplicada - Departament de Física Aplicada, A*Midex Foundation, Region Ile-de-France, Generalitat Valenciana, Ministerio de Economía y Empresa, Université Sorbonne Paris Cité, Institut Universitaire de France, European Regional Development Fund, Instituto Nazionale di Fisica Nucleare, Ministerio de Economía y Competitividad, Conseil Régional Provence-Alpes-Côte d'Azur, Netherlands Organization for Scientific Research, Bundesministerium für Bildung und Forschung, Alemania, Centre National de la Recherche Scientifique, Francia, National Authority for Scientific Research, Rumanía, 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'Education Nationale, de la Formation professionnelle, de l'Enseignement Supérieur et de la Recherche Scientifique, Marruecos, Albert, A., Andre, M., Anghinolfi, M., Anton, G., Ardid Ramírez, Miguel, Aubert, J-J, Aublin, J., Avgitas, T., Baret, B., Barrios-Marti, J., Basa, S., Belhorma, B., Benin, V., Biagi, S., Bormuth, R., Felis-Enguix, Iván, Martínez Mora, Juan Antonio, Saldaña-Coscollar, María, Universitat Politècnica de València. Departamento de Física Aplicada - Departament de Física Aplicada, A*Midex Foundation, Region Ile-de-France, Generalitat Valenciana, Ministerio de Economía y Empresa, Université Sorbonne Paris Cité, Institut Universitaire de France, European Regional Development Fund, Instituto Nazionale di Fisica Nucleare, Ministerio de Economía y Competitividad, Conseil Régional Provence-Alpes-Côte d'Azur, Netherlands Organization for Scientific Research, Bundesministerium für Bildung und Forschung, Alemania, Centre National de la Recherche Scientifique, Francia, National Authority for Scientific Research, Rumanía, 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'Education Nationale, de la Formation professionnelle, de l'Enseignement Supérieur et de la Recherche Scientifique, Marruecos, Albert, A., Andre, M., Anghinolfi, M., Anton, G., Ardid Ramírez, Miguel, Aubert, J-J, Aublin, J., Avgitas, T., Baret, B., Barrios-Marti, J., Basa, S., Belhorma, B., Benin, V., Biagi, S., Bormuth, R., Felis-Enguix, Iván, Martínez Mora, Juan Antonio, and Saldaña-Coscollar, María
Abstract: [EN] The results of three different searches for neutrino candidates, associated with the IceCube-170922A event or from the direction of TXS 0506+056, by the ANTARES neutrino telescope, are presented. The ¿rst search refers to the online follow-up of the IceCube alert; the second is based on the standard time-integrated method employed by the Collaboration to search for point-like neutrino sources; the third uses information from the IceCube time-dependent analysis that reported bursting activity centered on 2014 December 13, as input for an ANTARES time-dependent analysis. The online follow-up and the time-dependent analysis yield no events related to the source. The time-integrated study performed over a period from 2007 to 2017 ¿ts 1.03 signal events, which corresponds to a p-value of 3.4% (not considering trial factors). Only for two other astrophysical objects in our candidate list has a smaller p-value been found. When considering that 107 sources have been investigated, the post-trial p-value for TXS 0506+056 corresponds to 87%.
Published: 2018

7. The cosmic ray shadow of the Moon observed with the ANTARES neutrino telescope

Author: Universitat Politècnica de València. Departamento de Física Aplicada - Departament de Física Aplicada, A*Midex Foundation, Region Ile-de-France, Generalitat Valenciana, Ministerio de Economía y Empresa, Université Sorbonne Paris Cité, Institut Universitaire de France, European Regional Development Fund, Instituto Nazionale di Fisica Nucleare, Ministerio de Economía y Competitividad, Conseil Régional Provence-Alpes-Côte d'Azur, Netherlands Organization for Scientific Research, Département du Var and Ville de La Seyne-sur-Mer, Bundesministerium für Bildung und Forschung, Alemania, Centre National de la Recherche Scientifique, Francia, National Authority for Scientific Research, Rumanía, 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), Universidad Autónoma de Madrid, Ministère de l'Education Nationale, de la Formation professionnelle, de l'Enseignement Supérieur et de la Recherche Scientifique, Marruecos, Albert, A., Andre, M., Anghinolfi, M., Anton, G., Ardid Ramírez, Miguel, Aubert, J. -J., Aublin, J., Avgitas, T., Baret, B., Barrios-Martit, J., Basa, S., Belhorma, B., Bertin, V., Biagi, S., Bormuth, R., Felis-Enguix, Iván, Martínez Mora, Juan Antonio, Saldaña-Coscollar, María, Universitat Politècnica de València. Departamento de Física Aplicada - Departament de Física Aplicada, A*Midex Foundation, Region Ile-de-France, Generalitat Valenciana, Ministerio de Economía y Empresa, Université Sorbonne Paris Cité, Institut Universitaire de France, European Regional Development Fund, Instituto Nazionale di Fisica Nucleare, Ministerio de Economía y Competitividad, Conseil Régional Provence-Alpes-Côte d'Azur, Netherlands Organization for Scientific Research, Département du Var and Ville de La Seyne-sur-Mer, Bundesministerium für Bildung und Forschung, Alemania, Centre National de la Recherche Scientifique, Francia, National Authority for Scientific Research, Rumanía, 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), Universidad Autónoma de Madrid, Ministère de l'Education Nationale, de la Formation professionnelle, de l'Enseignement Supérieur et de la Recherche Scientifique, Marruecos, Albert, A., Andre, M., Anghinolfi, M., Anton, G., Ardid Ramírez, Miguel, Aubert, J. -J., Aublin, J., Avgitas, T., Baret, B., Barrios-Martit, J., Basa, S., Belhorma, B., Bertin, V., Biagi, S., Bormuth, R., Felis-Enguix, Iván, Martínez Mora, Juan Antonio, and Saldaña-Coscollar, María
Abstract: [EN] One of the main objectives of the ANTARES telescope is the search for point-like neutrino sources. Both the pointing accuracy and the angular resolution of the detector are important in this context and a reliable way to evaluate this performance is needed. In order to measure the pointing accuracy of the detector, one possibility is to study the shadow of the Moon, i.e. the de¿cit of the atmospheric muon ¿ux from the direction of the Moon induced by the absorption of cosmic rays. Analysing the data taken between 2007 and 2016, the Moon shadow is observed with 3.5¿ statistical signi¿cance. The detector angular resolution for downward-going muons is 0.73¿ ±0.14¿. The resulting pointing performance is consistent with the expectations. An independent check of the telescope pointing accuracy is realised with the data collected by a shower array detector onboard of a ship temporarily moving around the ANTARES location.
Published: 2018

8. Joint Constraints on Galactic Diffuse Neutrino Emission from the ANTARES and IceCube Neutrino Telescopes

Author: Universitat Politècnica de València. Departamento de Física Aplicada - Departament de Física Aplicada, Ministerio de Economía y Empresa, Universidad Autónoma de Madrid, Albert, A., Andre, M., Anghinolfi, M., Ardid Ramírez, Miguel, Aubert, J. -J., Aublin, J., Avgitas, T., Baret, B., Barrios-Marti, J., Basa, S., Belhorma, B., Bertin, V., Biagi, S., Bormuth, R., Boumaaza, J., Felis-Enguix, Iván, Martínez Mora, Juan Antonio, Saldaña-Coscollar, María, Universitat Politècnica de València. Departamento de Física Aplicada - Departament de Física Aplicada, Ministerio de Economía y Empresa, Universidad Autónoma de Madrid, Albert, A., Andre, M., Anghinolfi, M., Ardid Ramírez, Miguel, Aubert, J. -J., Aublin, J., Avgitas, T., Baret, B., Barrios-Marti, J., Basa, S., Belhorma, B., Bertin, V., Biagi, S., Bormuth, R., Boumaaza, J., Felis-Enguix, Iván, Martínez Mora, Juan Antonio, and Saldaña-Coscollar, María
Abstract: [EN] The existence of diffuse Galactic neutrino production is expected from cosmic-ray interactions with Galactic gas and radiation ¿elds. Thus, neutrinos are a unique messenger offering the opportunity to test the products of Galactic cosmic-ray interactions up to energies of hundreds of TeV. Here we present a search for this production using ten years of Astronomy with a Neutrino Telescope and Abyss environmental RESearch (ANTARES) track and shower data, as well as seven years of IceCube track data. The data are combined into a joint likelihood test for neutrino emission according to the KRAg model assuming a 5 PeV per nucleon Galactic cosmic-ray cutoff. No signi¿cant excess is found. As a consequence, the limits presented in this Letter start constraining the model parameter space for Galactic cosmic-ray production and transport.
Published: 2018

9. The SUrvey for Pulsars and Extragalactic Radio Bursts - II. New FRB discoveries and their follow-up

Author: Universitat Politècnica de València. Departamento de Física Aplicada - Departament de Física Aplicada, Agence Nationale de la Recherche, Francia, Max Planck Society, European Commission, Conseil Régional, Île-de-France, Australian Government, Generalitat Valenciana, Agenzia Spaziale Italiana, Conseil Régional d'Alsace, Australian Research Council, Regione Autonoma della Sardegna, Université Sorbonne Paris Cité, Institut Universitaire de France, European Regional Development Fund, Swinburne University of Technology, Australian Astronomical Observatory, Instituto Nazionale di Fisica Nucleare, Ministerio de Economía y Competitividad, Conseil Régional Provence-Alpes-Côte d'Azur, Département du Var and Ville de La Seyne-sur-Mer, Ministero dell'università e della ricerca, Italia, National Authority for Scientific Research, Rumanía, Bundesministerium für Bildung und Forschung, Alemania, Centre National de la Recherche Scientifique, Francia, Science and Technology Facilities Council, Reino Unido, Netherlands Organization for Scientific Research, 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, Laboratoire d'Excellence OCEVU (Origines, Constituants & ÉVolution de l'Univers), Ministère de l'Education Nationale, de la Formation professionnelle, de l'Enseignement Supérieur et de la Recherche Scientifique, Marruecos, ARC Centre of Excellence for All-sky Astrophysics, European Research Council, Bhandari, S., Keane, E. F., Barr, E. D., Jameson, A., Petroff, E., Johnston, S., Bailes, M., Bhat, N. D. R., Burgay, M., Burke-Spolaor, S., Caleb, M., Eatough, R. P., Flynn, C., Green, J. A., Jankowski, F., 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, Agence Nationale de la Recherche, Francia, Max Planck Society, European Commission, Conseil Régional, Île-de-France, Australian Government, Generalitat Valenciana, Agenzia Spaziale Italiana, Conseil Régional d'Alsace, Australian Research Council, Regione Autonoma della Sardegna, Université Sorbonne Paris Cité, Institut Universitaire de France, European Regional Development Fund, Swinburne University of Technology, Australian Astronomical Observatory, Instituto Nazionale di Fisica Nucleare, Ministerio de Economía y Competitividad, Conseil Régional Provence-Alpes-Côte d'Azur, Département du Var and Ville de La Seyne-sur-Mer, Ministero dell'università e della ricerca, Italia, National Authority for Scientific Research, Rumanía, Bundesministerium für Bildung und Forschung, Alemania, Centre National de la Recherche Scientifique, Francia, Science and Technology Facilities Council, Reino Unido, Netherlands Organization for Scientific Research, 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, Laboratoire d'Excellence OCEVU (Origines, Constituants & ÉVolution de l'Univers), Ministère de l'Education Nationale, de la Formation professionnelle, de l'Enseignement Supérieur et de la Recherche Scientifique, Marruecos, ARC Centre of Excellence for All-sky Astrophysics, European Research Council, Bhandari, S., Keane, E. F., Barr, E. D., Jameson, A., Petroff, E., Johnston, S., Bailes, M., Bhat, N. D. R., Burgay, M., Burke-Spolaor, S., Caleb, M., Eatough, R. P., Flynn, C., Green, J. A., Jankowski, F., Ardid Ramírez, Miguel, Felis-Enguix, Iván, Martínez Mora, Juan Antonio, and Saldaña-Coscollar, María
Abstract: [EN] We report the discovery of four Fast Radio Bursts (FRBs) in the ongoing SUrvey for Pulsars and Extragalactic Radio Bursts at the Parkes Radio Telescope: FRBs 150610, 151206, 151230 and 160102. Our real-time discoveries have enabled us to conduct extensive, rapid multimes-senger follow-up at 12 major facilities sensitive to radio, optical, X-ray, gamma-ray photons and neutrinos on time-scales ranging from an hour to a few months post-burst. No counterparts to the FRBs were found and we provide upper limits on afterglow luminosities. None of the FRBs were seen to repeat. Formal ¿ts to all FRBs show hints of scattering while their intrinsic widths are unresolved in time. FRB 151206 is at low Galactic latitude, FRB 151230 shows a sharp spectral cut-off, and FRB 160102 has the highest dispersion measure (DM = 2596.1 ± 0.3 pc cm¿3) detected to date. Three of the FRBs have high dispersion measures (DM > 1500 pc cm¿3), favouring a scenario where the DM is dominated by contributions from the intergalactic medium. The slope of the Parkes FRB source counts distribution with ¿uences >2Jyms is ¿ =¿2.2+01..62 and still consistent with a Euclidean distribution (¿ =¿3/2). We also ¿nd that the all-sk¿y rate is 1.7+¿10..59 × 103FRBs/(4¿ sr)/day above ~2 Jy ms and there is currently no strong evidence for a latitude-dependent FRB sky rate.
Published: 2018

10. All-flavor Search for a Diffuse Flux of Cosmic Neutrinos with Nine Years of ANTARES Data

Author: Universitat Politècnica de València. Departamento de Física Aplicada - Departament de Física Aplicada, Agence Nationale de la Recherche, Francia, European Commission, Conseil Régional, Île-de-France, Generalitat Valenciana, Conseil Régional d'Alsace, Institut Universitaire de France, European Regional Development Fund, Instituto Nazionale di Fisica Nucleare, Ministerio de Economía y Competitividad, Conseil Régional Provence-Alpes-Côte d'Azur, Département du Var and Ville de La Seyne-sur-Mer, National Authority for Scientific Research, Rumanía, Bundesministerium für Bildung und Forschung, Alemania, Centre National de la Recherche Scientifique, Francia, Netherlands Organization for Scientific Research, Council on grants of the President of the Russian Federation, Commissariat à l'Énergie Atomique et aux Énergies Alternatives, Francia, Ministère de l'Education Nationale, de la Formation professionnelle, de l'Enseignement Supérieur et de la Recherche Scientifique, Marruecos, Albert, A., Andre, M., Anghinolfi, M., Anton, G., Ardid Ramírez, Miguel, Aubert, J.J., Aublin, J., Avgitas, T., Baret, B., Barrios-Marti, J., Basa, S., Belhorma, B., Bertin, V., Biagi, S., Bormuth, R., Felis-Enguix, Iván, Martínez Mora, Juan Antonio, Saldaña-Coscollar, María, Universitat Politècnica de València. Departamento de Física Aplicada - Departament de Física Aplicada, Agence Nationale de la Recherche, Francia, European Commission, Conseil Régional, Île-de-France, Generalitat Valenciana, Conseil Régional d'Alsace, Institut Universitaire de France, European Regional Development Fund, Instituto Nazionale di Fisica Nucleare, Ministerio de Economía y Competitividad, Conseil Régional Provence-Alpes-Côte d'Azur, Département du Var and Ville de La Seyne-sur-Mer, National Authority for Scientific Research, Rumanía, Bundesministerium für Bildung und Forschung, Alemania, Centre National de la Recherche Scientifique, Francia, Netherlands Organization for Scientific Research, Council on grants of the President of the Russian Federation, Commissariat à l'Énergie Atomique et aux Énergies Alternatives, Francia, Ministère de l'Education Nationale, de la Formation professionnelle, de l'Enseignement Supérieur et de la Recherche Scientifique, Marruecos, Albert, A., Andre, M., Anghinolfi, M., Anton, G., Ardid Ramírez, Miguel, Aubert, J.J., Aublin, J., Avgitas, T., Baret, B., Barrios-Marti, J., Basa, S., Belhorma, B., Bertin, V., Biagi, S., Bormuth, R., Felis-Enguix, Iván, Martínez Mora, Juan Antonio, and Saldaña-Coscollar, María
Abstract: [EN] The ANTARES detector is at present the most sensitive neutrino telescope in the northern hemisphere. The highly signi¿cant cosmic neutrino excess observed by the Antarctic IceCube detector can be studied with ANTARES, exploiting its complementing ¿eld of view, exposure, and lower energy threshold. Searches for an all-¿avor diffuse neutrino signal, covering nine years of ANTARES data taking, are presented in this Letter. Upward-going events are used to reduce the atmospheric muon background. This work includes for the ¿rst time in ANTARES both track-like (mainly nm) and shower-like (mainly ne) events in this kind of analysis. Track-like events allow for an increase of the effective volume of the detector thanks to the long path traveled by muons in rock and/or sea water. Shower-like events are well reconstructed only when the neutrino interaction vertex is close to, or inside, the instrumented volume. A mild excess of high-energy events over the expected background is observed in nine years of ANTARES data in both samples. The best ¿t for a single power-law cosmic neutrino spectrum, in terms of per-¿avor ¿ux at 100 TeV, is (1.7+-1.0)10-18 GeV¿1 cm¿2 s¿1 sr¿1 with spectral index G=2.4+0.5-0.4. The null cosmic ¿ux assumption is rejected with a signi¿cance of 1.6¿.
Published: 2018

11. Long-term monitoring of the ANTARES optical module efficiencies using K-40 decays in sea water

Author: Universitat Politècnica de València. Departamento de Física Aplicada - Departament de Física Aplicada, Albert, A., Andre, M., Anghinolfi, M., Anton, G., Ardid Ramírez, Miguel, Aubert, J.-J., Aublin, J., Avgitas, T., Baret, B., Barrios-Marti, J., Basa, S., Belhorma, B., Bertin, V., Biagi, S., Bormuth, R., Felis-Enguix, Iván, Martínez Mora, Juan Antonio, Saldaña-Coscollar, María, Universitat Politècnica de València. Departamento de Física Aplicada - Departament de Física Aplicada, Albert, A., Andre, M., Anghinolfi, M., Anton, G., Ardid Ramírez, Miguel, Aubert, J.-J., Aublin, J., Avgitas, T., Baret, B., Barrios-Marti, J., Basa, S., Belhorma, B., Bertin, V., Biagi, S., Bormuth, R., Felis-Enguix, Iván, Martínez Mora, Juan Antonio, and Saldaña-Coscollar, María
Abstract: [EN] Cherenkov light induced by radioactive decay products is one of the major sources of background light for deep-sea neutrino telescopes such as ANTARES. These decays are at the same time a powerful calibration source. Using data collected by the ANTARES neutrino telescope from mid 2008 to 2017, the time evolution of the photon detection ef¿ciency of optical modules is studied. A modest loss of only 20% in 9 years is observed. The relative time calibration between adjacent modules is derived as well.
Published: 2018

12. All-sky Search for High-Energy Neutrinos from Gravitational Wave Event GW170104 with the ANTARES Neutrino Telescope

Author: Albert, A., Andre, M., Anghinolfi, M., Anton, G., Ardid Ramírez, Miguel, Aubert , J.J., Avgitas, T., Baret, B., Barrios-Marti, J., Basa, S., Belhorma, B., Bertin, V., Biagi, S., Bormuth, R., Bourret, S., Felis-Enguix, Iván, Martínez Mora, Juan Antonio, and Saldaña-Coscollar, María
Subjects: FISICA APLICADA, High-energy neutrinos, Antares neutrino telescope, Gravitational event GW170104
Abstract: [EN] Advanced LIGO detected a significant gravitational wave signal (GW170104) originating from the coalescence of two black holes during the second observation run on January 4th, 2017. Anall-sky high-energy neutrino follow-up search has been made using data from the Antares neutrino telescope, including both upgoing and downgoing events in two separate analyses. No neutrino candidates were found within +/- 500 s around the GW event time nor any time clustering of events over an extended time window of +/- 3 months. The non-detection is used to constrain isotropic-equivalent high-energy neutrino emission from GW170104 to less than similar to 1.2 x 10(55) erg for a E-2 spectrum. This constraint is valid in the energy range corresponding to the 5-95% quantiles of the neutrino flux [3.2 TeV; 3.6 PeV], if the GW emitter was below the Antares horizon at the alert time., The ANTARES Collaboration is grateful to the LIGO Scientific Collaboration and the Virgo Collaboration for the setting up of an impressive follow-up observation program, and for sharing invaluable scientific information for the benefit of the emerging multi-messenger astronomy. The authors acknowledge the financial support of the funding agencies: Centre National de la Recherche Scientifique (CNRS), Commissariat a l'energie atomique et aux energies alternatives (CEA), Commission Europeenne (FEDER fund and Marie Curie Program), Institut Universitaire de France (IUF), IdEx program and UnivEarthS Labex program at Sorbonne Paris Cite (ANR-10-LABX-0023 and ANR-11-IDEX-0005-02), Labex OCEVU (ANR-11-LABX-0060) and the A*MIDEX project (ANR-11-IDEX-0001-02), Region Ile-de-France (DIM-ACAV), Region Alsace (contrat CPER), Region Provence-Alpes-Cote d'Azur, Departement du Var and Ville de La Seyne-sur-Mer, France; Bundesministerium fur Bildung und Forschung (BMBF), Germany; Istituto Nazionale di Fisica Nucleare (INFN), Italy; Nederlandse organisatie voor Wetenschappelijk Onderzoek (NWO), the Netherlands; Council of the President of the Russian Federation for young scientists and leading scientific schools supporting grants, Russia; National Authority for Scientific Research (ANCS), Romania; Ministerio de Economia y Competitividad (MINECO): Plan Estatal de Investigacion (refs. FPA2015-65150-C3-1-P, -2-P and -3-P, (MINECO/FEDER)), Severo Ochoa Centre of Excellence and MultiDark Consolider (MINECO), and Prometeo and Grisolia programs (Generalitat Valenciana), Spain; Ministry of Higher Education, Scientific Research and Professional Training, Morocco.
Published: 2017

13. Analyse and study of small fan noise

Author: Saldaña Coscollar, María
Subjects: Ingeniero Técnico de Telecomunicación, esp. en Sonido e Imagen-Enginyer Tècnic de Telecomunicació, esp. en So i Imatge, FISICA APLICADA
Abstract: The aim of this project is the study and analyze of factors that influence to noise power emitted by small fan. For it, in this study, has been a realized measurement of noise power level and parameters that influence in fan noise, with different types of axial small ventilators at special laboratory with correct method of calculation according to normative of the International Organization for Standardization (ISO)
Published: 2017

14. Multi-messenger Observations of a Binary Neutron Star Merger

Author: Abbot, B. P., Abbot, R., Abbot, T. D., Acernnese, F., Ackley, K., Adams, C., Adams, T., Addeso, P., Adhikari, R. X., Adya, V. B., Affeldt, C., Afrough, M., Agarwal, B., Agathos, M., Agatsuma, K., Ardid Ramírez, Miguel, Felis-Enguix, Iván, Martínez Mora, Juan Antonio, and Saldaña-Coscollar, María
Subjects: Astrophysics::High Energy Astrophysical Phenomena, FISICA APLICADA, Stars: Neutron, Astrophysics::Cosmology and Extragalactic Astrophysics, Neutron [Stars], Astrophysics::Galaxy Astrophysics, Gravitational waves
Abstract: [EN] On 2017 August 17 a binary neutron star coalescence candidate (later designated GW170817) with merger time 12:41:04 UTC was observed through gravitational waves by the Advanced LIGO and Advanced Virgo detectors. The Fermi Gamma-ray Burst Monitor independently detected a gamma-ray burst (GRB 170817A) with a time delay of ~1.7 s with respect to the merger time. From the gravitational-wave signal, the source was initially localized to a sky region of 31 deg2 at a luminosity distance of 40-+88 Mpc and with component masses consistent with neutron stars. The component masses were later measured to be in the range 0.86 to 2.26 M¿. An extensive observing campaign was launched across the electromagnetic spectrum leading to the discovery of a bright optical transient (SSS17a, now with the IAU identi¿cation of AT 2017gfo) in NGC 4993 (at ~40 Mpc) less than 11 hours after the merger by the One-Meter, Two Hemisphere (1M2H) team using the 1 m Swope Telescope. The optical transient was independently detected by multiple teams within an hour. Subsequent observations targeted the object and its environment. Early ultraviolet observations revealed a blue transient that faded within 48 hours. Optical and infrared observations showed a redward evolution over ~10 days. Following early non-detections, X-ray and radio emission were discovered at the transient¿s position ~9 and ~16 days, respectively, after the merger. Both the X-ray and radio emission likely arise from a physical process that is distinct from the one that generates the UV/optical/near-infrared emission. No ultra-high-energy gamma-rays and no neutrino candidates consistent with the source were found in follow-up searches. These observations support the hypothesis that GW170817 was produced by the merger of two neutron stars in NGC4993followedbyashortgamma-rayburst(GRB 170817A) and a kilonova/macronova powered by the radioactive decay of r-process nuclei synthesized in the ejecta.
Published: 2017

15. Search for high-energy neutrinos from bright GRBs with ANTARES

Author: Universitat Politècnica de València. Departamento de Física Aplicada - Departament de Física Aplicada, A*Midex Foundation, Region Ile-de-France, Generalitat Valenciana, Université Sorbonne Paris Cité, Instituto Nazionale di Fisica Nucleare, Ministerio de Economía y Competitividad, Conseil Régional Provence-Alpes-Côte d'Azur, Netherlands Organization for Scientific Research, Département du Var and Ville de La Seyne-sur-Mer, Ministerio de Economía, Industria y Competitividad, Bundesministerium für Bildung und Forschung, Alemania, National Authority for Scientific Research, Rumanía, Centre National pour la Recherche Scientifique et Technique, Marruecos, Laboratoire d'Excellence OCEVU (Origines, Constituants & ÉVolution de l'Univers), 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., Bormuth, R., Bourret, S., Bouwheis, M. C., Felis-Enguix, Iván, Martínez Mora, Juan Antonio, Saldaña-Coscollar, María, Universitat Politècnica de València. Departamento de Física Aplicada - Departament de Física Aplicada, A*Midex Foundation, Region Ile-de-France, Generalitat Valenciana, Université Sorbonne Paris Cité, Instituto Nazionale di Fisica Nucleare, Ministerio de Economía y Competitividad, Conseil Régional Provence-Alpes-Côte d'Azur, Netherlands Organization for Scientific Research, Département du Var and Ville de La Seyne-sur-Mer, Ministerio de Economía, Industria y Competitividad, Bundesministerium für Bildung und Forschung, Alemania, National Authority for Scientific Research, Rumanía, Centre National pour la Recherche Scientifique et Technique, Marruecos, Laboratoire d'Excellence OCEVU (Origines, Constituants & ÉVolution de l'Univers), 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., Bormuth, R., Bourret, S., Bouwheis, M. C., Felis-Enguix, Iván, Martínez Mora, Juan Antonio, and Saldaña-Coscollar, María
Abstract: [EN] Gamma-ray bursts are thought to be sites of hadronic acceleration, thus neutrinos are expected from the decay of charged particles, produced in p gamma interactions. The methods and results of a search for muon neutrinos in the data of the ANTARES neutrino telescope from four bright GRBs (GRB 080916C, GRB 110918A, GRB 130427A and GRB 130505A) observed between 2008 and 2013 are presented. Two scenarios of the fireball model have been investigated: the internal shock scenario, leading to the production of neutrinos with energies mainly above 100 TeV, and the photospheric scenario, characterized by a low-energy component in neutrino spectra due to the assumption of neutrino production closer to the central engine. Since no neutrino events have been detected in temporal and spatial coincidence with these bursts, upper limits at 90 per cent confidence level on the expected neutrino fluxes are derived. The non-detection allows for directly constraining the bulk Lorentz factor of the jet Gamma and the baryon loading f(p)
Published: 2017

16. Time-dependent search for neutrino emission from X-ray binaries with the ANTARES telescope

Author: Universitat Politècnica de València. Departamento de Física Aplicada - Departament de Física Aplicada, A*Midex Foundation, Region Ile-de-France, Generalitat Valenciana, Université Sorbonne Paris Cité, Institut Universitaire de France, European Regional Development Fund, Instituto Nazionale di Fisica Nucleare, Ministerio de Economía y Competitividad, Conseil Régional Provence-Alpes-Côte d'Azur, Netherlands Organization for Scientific Research, Ministerio de Economía, Industria y Competitividad, Bundesministerium für Bildung und Forschung, Alemania, Centre National de la Recherche Scientifique, Francia, National Authority for Scientific Research, Rumanía, Council on grants of the President of the Russian Federation, Centre National pour la Recherche Scientifique et Technique, Marruecos, Commissariat à l'Énergie Atomique et aux Énergies Alternatives, Francia, Laboratoire d'Excellence OCEVU (Origines, Constituants & ÉVolution de l'Univers), Albert, A., Andre, M., Anton, G., Ardid Ramírez, Miguel, Aubert, J.J., Avgitas, T., Baret, B., Barrios-Marti, J., Basa, S., Bertin, V., Biagi, S., Bormuth, R., Bouwheis, M. C., Bruijn, R., Busto, J., Felis-Enguix, Iván, Martínez Mora, Juan Antonio, Saldaña-Coscollar, María, Universitat Politècnica de València. Departamento de Física Aplicada - Departament de Física Aplicada, A*Midex Foundation, Region Ile-de-France, Generalitat Valenciana, Université Sorbonne Paris Cité, Institut Universitaire de France, European Regional Development Fund, Instituto Nazionale di Fisica Nucleare, Ministerio de Economía y Competitividad, Conseil Régional Provence-Alpes-Côte d'Azur, Netherlands Organization for Scientific Research, Ministerio de Economía, Industria y Competitividad, Bundesministerium für Bildung und Forschung, Alemania, Centre National de la Recherche Scientifique, Francia, National Authority for Scientific Research, Rumanía, Council on grants of the President of the Russian Federation, Centre National pour la Recherche Scientifique et Technique, Marruecos, Commissariat à l'Énergie Atomique et aux Énergies Alternatives, Francia, Laboratoire d'Excellence OCEVU (Origines, Constituants & ÉVolution de l'Univers), Albert, A., Andre, M., Anton, G., Ardid Ramírez, Miguel, Aubert, J.J., Avgitas, T., Baret, B., Barrios-Marti, J., Basa, S., Bertin, V., Biagi, S., Bormuth, R., Bouwheis, M. C., Bruijn, R., Busto, J., Felis-Enguix, Iván, Martínez Mora, Juan Antonio, and Saldaña-Coscollar, María
Abstract: [EN] ANTARES is currently the largest neutrino telescope operating in the Northern Hemisphere, aiming at the detection of high-energy neutrinos from astrophysical sources. Neutrino telescopes constantly monitor at least one complete hemisphere of the sky, and are thus well-suited to detect neutrinos produced in transient astrophysical sources. A time-dependent search has been applied to a list of 33 X-ray binaries undergoing high flaring activities in satellite data (RXTE/ASM, MAXI and Swift/BAT) and during hardness transi-tion states in the 2008 2012 period. The background originating from interactions of charged cosmic rays in the Earth s atmosphere is drastically reduced by requiring a directional and temporal coincidence with astrophysical phenomena. The results of this search are presented together with comparisons between the neutrino flux upper limits and the neutrino flux predictions from astrophysical models. The neutrino flux upper limits resulting from this search limit the jet parameter space for some astrophysical models.
Published: 2017

17. Sperm whale long-range echolocation sounds revealed by ANTARES, a deep-sea 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, Region Ile-de-France, Generalitat Valenciana, Université Sorbonne Paris Cité, Institut Universitaire de France, European Regional Development Fund, Instituto Nazionale di Fisica Nucleare, Conseil Régional Provence-Alpes-Côte d'Azur, Netherlands Organization for Scientific Research, Ministerio de Economía, Industria y Competitividad, Bundesministerium für Bildung und Forschung, Alemania, Centre National de la Recherche Scientifique, Francia, National Authority for Scientific Research, Rumanía, Council on grants of the President of the Russian Federation, Centre National pour la Recherche Scientifique et Technique, Marruecos, Commissariat à l'Énergie Atomique et aux Énergies Alternatives, Francia, Andre, M., Caballé, A., Van der Schaar, M., Solsona, A., Houégnigan, L., Zaugg, S., Sanchez, A. M., Castell, J. V., Solé, M., Vila, F., Djokic, D., Adrián Martínez, Silvia, Albert, A., Anghinolfi, M., Anton, G., Ardid Ramírez, Miguel, Felis-Enguix, Iván, 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. Departamento de Física Aplicada - Departament de Física Aplicada, Region Ile-de-France, Generalitat Valenciana, Université Sorbonne Paris Cité, Institut Universitaire de France, European Regional Development Fund, Instituto Nazionale di Fisica Nucleare, Conseil Régional Provence-Alpes-Côte d'Azur, Netherlands Organization for Scientific Research, Ministerio de Economía, Industria y Competitividad, Bundesministerium für Bildung und Forschung, Alemania, Centre National de la Recherche Scientifique, Francia, National Authority for Scientific Research, Rumanía, Council on grants of the President of the Russian Federation, Centre National pour la Recherche Scientifique et Technique, Marruecos, Commissariat à l'Énergie Atomique et aux Énergies Alternatives, Francia, Andre, M., Caballé, A., Van der Schaar, M., Solsona, A., Houégnigan, L., Zaugg, S., Sanchez, A. M., Castell, J. V., Solé, M., Vila, F., Djokic, D., Adrián Martínez, Silvia, Albert, A., Anghinolfi, M., Anton, G., Ardid Ramírez, Miguel, Felis-Enguix, Iván, Martínez Mora, Juan Antonio, and Saldaña-Coscollar, María
Abstract: [EN] Despite dedicated research has been carried out to adequately map the distribution of the sperm whale in the Mediterranean Sea, unlike other regions of the world, the species population status is still presently uncertain. The analysis of two years of continuous acoustic data provided by the ANTARES neutrino telescope revealed the year-round presence of sperm whales in the Ligurian Sea, probably associated with the availability of cephalopods in the region. The presence of the Ligurian Sea sperm whales was demonstrated through the real-time analysis of audio data streamed from a cabled-to- shore deep-sea observatory that allowed the hourly tracking of their long-range echolocation behaviour on the Internet. Interestingly, the same acoustic analysis indicated that the occurrence of surface shipping noise would apparently not condition the foraging behaviour of the sperm whale in the area, since shipping noise was almost always present when sperm whales were acoustically detected. The continuous presence of the sperm whale in the region confirms the ecological value of the Ligurian sea and the importance of ANTARES to help monitoring its ecosystems
Published: 2017

18. Multi-messenger Observations of a Binary Neutron Star Merger

Author: Universitat Politècnica de València. Departamento de Física Aplicada - Departament de Física Aplicada, A*Midex Foundation, Université Sorbonne Paris Cité, Ministerio de Economía y Competitividad, Agence Nationale de la Recherche, Francia, Ministerio de Economía, Industria y Competitividad, Laboratoire d'Excellence OCEVU (Origines, Constituants & ÉVolution de l'Univers), Abbot, B. P., Abbot, R., Abbot, T. D., Acernnese, F., Ackley, K., Adams, C., Adams, T., Addeso, P., Adhikari, R. X., Adya, V. B., Affeldt, C., Afrough, M., Agarwal, B., Agathos, M., Agatsuma, K., 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, A*Midex Foundation, Université Sorbonne Paris Cité, Ministerio de Economía y Competitividad, Agence Nationale de la Recherche, Francia, Ministerio de Economía, Industria y Competitividad, Laboratoire d'Excellence OCEVU (Origines, Constituants & ÉVolution de l'Univers), Abbot, B. P., Abbot, R., Abbot, T. D., Acernnese, F., Ackley, K., Adams, C., Adams, T., Addeso, P., Adhikari, R. X., Adya, V. B., Affeldt, C., Afrough, M., Agarwal, B., Agathos, M., Agatsuma, K., Ardid Ramírez, Miguel, Felis-Enguix, Iván, Martínez Mora, Juan Antonio, and Saldaña-Coscollar, María
Abstract: [EN] On 2017 August 17 a binary neutron star coalescence candidate (later designated GW170817) with merger time 12:41:04 UTC was observed through gravitational waves by the Advanced LIGO and Advanced Virgo detectors. The Fermi Gamma-ray Burst Monitor independently detected a gamma-ray burst (GRB 170817A) with a time delay of ~1.7 s with respect to the merger time. From the gravitational-wave signal, the source was initially localized to a sky region of 31 deg2 at a luminosity distance of 40-+88 Mpc and with component masses consistent with neutron stars. The component masses were later measured to be in the range 0.86 to 2.26 M¿. An extensive observing campaign was launched across the electromagnetic spectrum leading to the discovery of a bright optical transient (SSS17a, now with the IAU identi¿cation of AT 2017gfo) in NGC 4993 (at ~40 Mpc) less than 11 hours after the merger by the One-Meter, Two Hemisphere (1M2H) team using the 1 m Swope Telescope. The optical transient was independently detected by multiple teams within an hour. Subsequent observations targeted the object and its environment. Early ultraviolet observations revealed a blue transient that faded within 48 hours. Optical and infrared observations showed a redward evolution over ~10 days. Following early non-detections, X-ray and radio emission were discovered at the transient¿s position ~9 and ~16 days, respectively, after the merger. Both the X-ray and radio emission likely arise from a physical process that is distinct from the one that generates the UV/optical/near-infrared emission. No ultra-high-energy gamma-rays and no neutrino candidates consistent with the source were found in follow-up searches. These observations support the hypothesis that GW170817 was produced by the merger of two neutron stars in NGC4993followedbyashortgamma-rayburst(GRB 170817A) and a kilonova/macronova powered by the radioactive decay of r-process nuclei synthesized in the ejecta.
Published: 2017

19. Search for relativistic magnetic monopoles with five years of the ANTARES detector data

Author: Universitat Politècnica de València. Departamento de Física Aplicada - Departament de Física Aplicada, A*Midex Foundation, Region Ile-de-France, Generalitat Valenciana, Université Sorbonne Paris Cité, Institut Universitaire de France, Instituto Nazionale di Fisica Nucleare, Mediterráneo Señales Marítimas, S.L.L., Ministerio de Economía y Competitividad, Conseil Régional Provence-Alpes-Côte d'Azur, Netherlands Organization for Scientific Research, Ministerio de Economía, Industria y Competitividad, Bundesministerium für Bildung und Forschung, Alemania, Centre National de la Recherche Scientifique, Francia, National Authority for Scientific Research, Rumanía, 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'Education Nationale, de la Formation professionnelle, de l'Enseignement Supérieur et de la Recherche Scientifique, Marruecos, 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., Bormuth, R., Bourret, S., M. C. Bouwheis, Felis-Enguix, Iván, Martínez Mora, Juan Antonio, Saldaña-Coscollar, María, Universitat Politècnica de València. Departamento de Física Aplicada - Departament de Física Aplicada, A*Midex Foundation, Region Ile-de-France, Generalitat Valenciana, Université Sorbonne Paris Cité, Institut Universitaire de France, Instituto Nazionale di Fisica Nucleare, Mediterráneo Señales Marítimas, S.L.L., Ministerio de Economía y Competitividad, Conseil Régional Provence-Alpes-Côte d'Azur, Netherlands Organization for Scientific Research, Ministerio de Economía, Industria y Competitividad, Bundesministerium für Bildung und Forschung, Alemania, Centre National de la Recherche Scientifique, Francia, National Authority for Scientific Research, Rumanía, 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'Education Nationale, de la Formation professionnelle, de l'Enseignement Supérieur et de la Recherche Scientifique, Marruecos, 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., Bormuth, R., Bourret, S., M. C. Bouwheis, Felis-Enguix, Iván, Martínez Mora, Juan Antonio, and Saldaña-Coscollar, María
Abstract: [EN] A search for magnetic monopoles using five years of data recorded with the ANTARES neutrino telescope from January 2008 to December 2012 with a total live time of 1121 days is presented. The analysis is carried out in the range b>0.6 of magnetic monopole velocities using a strategy based on run-by-run Monte Carlo simulations. No signal above the background expectation from atmospheric muons and atmospheric neutrinos is observed, and upper limits are set on the magnetic monopole flux ranging from 5.7x10-16 to 1.5x10-18 cm-2 . s-1.sr-1.
Published: 2017

20. Stacked search for time shifted high energy neutrinos from gamma ray bursts 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, A*Midex Foundation, Region Ile-de-France, Generalitat Valenciana, Université Sorbonne Paris Cité, Institut Universitaire de France, European Regional Development Fund, Instituto Nazionale di Fisica Nucleare, Ministerio de Economía y Competitividad, Conseil Régional Provence-Alpes-Côte d'Azur, Netherlands Organization for Scientific Research, Ministerio de Economía, Industria y Competitividad, Bundesministerium für Bildung und Forschung, Alemania, Centre National de la Recherche Scientifique, Francia, National Authority for Scientific Research, Rumanía, Council on grants of the President of the Russian Federation, Centre National pour la Recherche Scientifique et Technique, Marruecos, Commissariat à l'Énergie Atomique et aux Énergies Alternatives, Francia, Laboratoire d'Excellence OCEVU (Origines, Constituants & ÉVolution de l'Univers), Adrián Martínez, Silvia, Albert, A., André, M., Anghinolfi, M., Anton, G., Ardid Ramírez, Miguel, Aubert, J.J., Baret, B., Barrios-Marti, J., Basa, S., Bertin, V., Biagi, S., Bormuth, R., M. C. Bouwheis, R. Bruijn, Felis-Enguix, Iván, 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. Departamento de Física Aplicada - Departament de Física Aplicada, A*Midex Foundation, Region Ile-de-France, Generalitat Valenciana, Université Sorbonne Paris Cité, Institut Universitaire de France, European Regional Development Fund, Instituto Nazionale di Fisica Nucleare, Ministerio de Economía y Competitividad, Conseil Régional Provence-Alpes-Côte d'Azur, Netherlands Organization for Scientific Research, Ministerio de Economía, Industria y Competitividad, Bundesministerium für Bildung und Forschung, Alemania, Centre National de la Recherche Scientifique, Francia, National Authority for Scientific Research, Rumanía, Council on grants of the President of the Russian Federation, Centre National pour la Recherche Scientifique et Technique, Marruecos, Commissariat à l'Énergie Atomique et aux Énergies Alternatives, Francia, Laboratoire d'Excellence OCEVU (Origines, Constituants & ÉVolution de l'Univers), Adrián Martínez, Silvia, Albert, A., André, M., Anghinolfi, M., Anton, G., Ardid Ramírez, Miguel, Aubert, J.J., Baret, B., Barrios-Marti, J., Basa, S., Bertin, V., Biagi, S., Bormuth, R., M. C. Bouwheis, R. Bruijn, Felis-Enguix, Iván, Martínez Mora, Juan Antonio, and Saldaña-Coscollar, María
Abstract: [EN] A search for high-energy neutrino emission cor-related with gamma-ray bursts outside the electromagnetic prompt-emission time window is presented. Using a stack-ing approach of the time delays between reported gamma-ray burst alerts and spatially coincident muon-neutrino sig-natures, data from the Antares neutrino telescope recorded between 2007 and 2012 are analysed. One year of public data from the IceCube detector between 2008 and 2009 have been also investigated. The respective timing proﬁles are scanned for statistically signiﬁcant accumulations within 40 days of the Gamma Ray Burst, as expected from Lorentz Invariance Violation effects and some astrophysical models. No signif-icant excess over the expected accidental coincidence rate could be found in either of the two data sets. The average strength of the neutrino signal is found to be fainter than one detectable neutrino signal per hundred gamma-ray bursts in the Antares data at 90% conﬁdence level.
Published: 2017

21. Intrinsic limits on resolutions in muon and electron-neutrino charged-current events in the KM3NeT/ORCA detector

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 Politécnica Superior de Gandia - Escola Politècnica Superior de Gandia, Universitat Politècnica de València. Departamento de Física Aplicada - Departament de Física Aplicada, Generalitat Valenciana, Agence de l'Oriental, Marruecos, Université Sorbonne Paris Cité, Institut Universitaire de France, European Regional Development Fund, Ministerio de Economía y Competitividad, Netherlands Organization for Scientific Research, National Authority for Scientific Research, Rumanía, Ministerio de Economía, Industria y Competitividad, Centre National de la Recherche Scientifique, Francia, Ministero dell'Istruzione dell'Università e della Ricerca, Italia, Centre National pour la Recherche Scientifique et Technique, Marruecos, Adrián Martínez, Silvia, Ageron, M., Aiello, S., Albert, A., Ameli, F., Anassontzis, E. G., Andre, M., Androulakis, G., Anghinolfi, M., Anton, G., Ardid Ramírez, Miguel, Avgitas, T., Barbarino, G., Barbarito, E., Baret, B., Llorens Alvarez, Carlos David, 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 Politécnica Superior de Gandia - Escola Politècnica Superior de Gandia, Universitat Politècnica de València. Departamento de Física Aplicada - Departament de Física Aplicada, Generalitat Valenciana, Agence de l'Oriental, Marruecos, Université Sorbonne Paris Cité, Institut Universitaire de France, European Regional Development Fund, Ministerio de Economía y Competitividad, Netherlands Organization for Scientific Research, National Authority for Scientific Research, Rumanía, Ministerio de Economía, Industria y Competitividad, Centre National de la Recherche Scientifique, Francia, Ministero dell'Istruzione dell'Università e della Ricerca, Italia, Centre National pour la Recherche Scientifique et Technique, Marruecos, Adrián Martínez, Silvia, Ageron, M., Aiello, S., Albert, A., Ameli, F., Anassontzis, E. G., Andre, M., Androulakis, G., Anghinolfi, M., Anton, G., Ardid Ramírez, Miguel, Avgitas, T., Barbarino, G., Barbarito, E., Baret, B., Llorens Alvarez, Carlos David, Martínez Mora, Juan Antonio, and Saldaña-Coscollar, María
Abstract: [EN] Studying atmospheric neutrino oscillations in the few-GeV range with a multimegaton detector promises to determine the neutrino mass hierarchy. This is the main science goal pursued by the future KM3NeT/ORCA water Cherenkov detector in the Mediterranean Sea. In this paper, the processes that limit the obtainable resolution in both energy and direction in charged-current neutrino events in the ORCA detector are investigated. These processes include the composition of the hadronic fragmentation products, the subsequent particle propagation and the photon-sampling fraction of the detector. GEANT simulations of neutrino interactions in seawater produced by GENIE are used to study the e ects in the 1{20 GeV range. It is found that uctuations in the hadronic cascade in conjunction with the variation of the inelasticity y are most detrimental to the resolutions. The effect of limited photon sampling in the detector is of signi cantly less importance. These results will therefore also be applicable to similar detectors/media, such as those in ice.
Published: 2017

22. All-sky Search for High-Energy Neutrinos from Gravitational Wave Event GW170104 with the ANTARES Neutrino Telescope

Author: Universitat Politècnica de València. Departamento de Física Aplicada - Departament de Física Aplicada, A*Midex Foundation, Agence Nationale de la Recherche, Francia, European Commission, Region Ile-de-France, Generalitat Valenciana, Conseil Régional d'Alsace, Université Sorbonne Paris Cité, Institut Universitaire de France, European Regional Development Fund, Instituto Nazionale di Fisica Nucleare, Ministerio de Economía y Competitividad, Conseil Régional Provence-Alpes-Côte d'Azur, Netherlands Organization for Scientific Research, Département du Var and Ville de La Seyne-sur-Mer, National Authority for Scientific Research, Rumanía, Bundesministerium für Bildung und Forschung, Alemania, Centre National de la Recherche Scientifique, Francia, 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'Education Nationale, de la Formation professionnelle, de l'Enseignement Supérieur et de la Recherche Scientifique, Marruecos, Albert, A., Andre, M., Anghinolfi, M., Anton, G., Ardid Ramírez, Miguel, Aubert , J.J., Avgitas, T., Baret, B., Barrios-Marti, J., Basa, S., Belhorma, B., Bertin, V., Biagi, S., Bormuth, R., Bourret, S., Felis-Enguix, Iván, Martínez Mora, Juan Antonio, Saldaña-Coscollar, María, Universitat Politècnica de València. Departamento de Física Aplicada - Departament de Física Aplicada, A*Midex Foundation, Agence Nationale de la Recherche, Francia, European Commission, Region Ile-de-France, Generalitat Valenciana, Conseil Régional d'Alsace, Université Sorbonne Paris Cité, Institut Universitaire de France, European Regional Development Fund, Instituto Nazionale di Fisica Nucleare, Ministerio de Economía y Competitividad, Conseil Régional Provence-Alpes-Côte d'Azur, Netherlands Organization for Scientific Research, Département du Var and Ville de La Seyne-sur-Mer, National Authority for Scientific Research, Rumanía, Bundesministerium für Bildung und Forschung, Alemania, Centre National de la Recherche Scientifique, Francia, 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'Education Nationale, de la Formation professionnelle, de l'Enseignement Supérieur et de la Recherche Scientifique, Marruecos, Albert, A., Andre, M., Anghinolfi, M., Anton, G., Ardid Ramírez, Miguel, Aubert , J.J., Avgitas, T., Baret, B., Barrios-Marti, J., Basa, S., Belhorma, B., Bertin, V., Biagi, S., Bormuth, R., Bourret, S., Felis-Enguix, Iván, Martínez Mora, Juan Antonio, and Saldaña-Coscollar, María
Abstract: [EN] Advanced LIGO detected a significant gravitational wave signal (GW170104) originating from the coalescence of two black holes during the second observation run on January 4th, 2017. Anall-sky high-energy neutrino follow-up search has been made using data from the Antares neutrino telescope, including both upgoing and downgoing events in two separate analyses. No neutrino candidates were found within +/- 500 s around the GW event time nor any time clustering of events over an extended time window of +/- 3 months. The non-detection is used to constrain isotropic-equivalent high-energy neutrino emission from GW170104 to less than similar to 1.2 x 10(55) erg for a E-2 spectrum. This constraint is valid in the energy range corresponding to the 5-95% quantiles of the neutrino flux [3.2 TeV; 3.6 PeV], if the GW emitter was below the Antares horizon at the alert time.
Published: 2017

23. A polarized fast radio burst at low Galactic latitude

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, ARC Centre of Excellence for All-sky Astrophysics, European Commission, Agence Nationale de la Recherche, Francia, Ministerio de Economía y Competitividad, Generalitat Valenciana, Institut Universitaire de France, Ardid Ramírez, Miguel, Felis-Enguix, Iván, Martínez Mora, Juan Antonio, Saldaña-Coscollar, María, Petroff, E., Burke-Spolaor, S., Keane, E. F., McLaughlin, M.A., Miller, R., Andreoni, I., Bailes, M., Barr, E.D., Bernard, S.R., Bhandari, S., Bhat, N.D.R., 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, ARC Centre of Excellence for All-sky Astrophysics, European Commission, Agence Nationale de la Recherche, Francia, Ministerio de Economía y Competitividad, Generalitat Valenciana, Institut Universitaire de France, Ardid Ramírez, Miguel, Felis-Enguix, Iván, Martínez Mora, Juan Antonio, Saldaña-Coscollar, María, Petroff, E., Burke-Spolaor, S., Keane, E. F., McLaughlin, M.A., Miller, R., Andreoni, I., Bailes, M., Barr, E.D., Bernard, S.R., Bhandari, S., and Bhat, N.D.R.
Abstract: This article has been accepted for publication in Monthly Notices of the Royal Astronomical Society ©: 2017 The Authors. Published by Oxford University Press on behalf of the Royal Astronomical Society. All rights reserved., [EN] We report on the discovery of a new fast radio burst (FRB), FRB 150215, with the Parkes radio telescope on 2015 February 15. The burst was detected in real time with a dispersion measure (DM) of 1105.6 ± 0.8 pc cm-3;3, a pulse duration of 2.8+1.2-0.25 ms, and a measured peak flux density assuming that the burst was at beam centre of 0.7+0.2-0.1 Jy. The FRB originated at a Galactic longitude and latitude of 24.66º,5.28º and 25º away from the Galactic Center. The burst was found to be 43 ± 5 per cent linearly polarized with a rotation measure (RM) in the range -9 < RM < 12 rad m-2 (95 per center confidence level), consistent with zero. The burst was followed up with 11 telescopes to search for radio, optical, X-ray, gamma-ray and neutrino emission. Neither transient nor variable emission was found to be associated with the burst and no repeat pulses have been observed in 17.25 h of observing. The sightline to the burst is close to the Galactic plane and the observed physical properties of FRB 150215 demonstrate the existence of sight lines of anomalously low RM for a given electron column density. The Galactic RM foreground may approach a null value due to magnetic field reversals along the line of sight, a decreased total electron column density from the Milky Way, or some combination of these effects. A lower Galactic DM contribution might explain why this burst was detectable whereas previous searches at low latitude have had lower detection rates than those out of the plane.
Published: 2017

24. 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

25. Acoustic System Development for Neutrino Underwater Detectors

Author: Ardid Ramírez, Miguel, Martínez Mora, Juan Antonio, Universitat Politècnica de València. Escuela Técnica Superior de Ingeniería del Diseño - Escola Tècnica Superior d'Enginyeria del Disseny, Saldaña Coscollar, María, Ardid Ramírez, Miguel, Martínez Mora, Juan Antonio, Universitat Politècnica de València. Escuela Técnica Superior de Ingeniería del Diseño - Escola Tècnica Superior d'Enginyeria del Disseny, and Saldaña Coscollar, María
Abstract: The main objective of this research is the design and development of two different underwater acoustic emitters aimed to the deep-sea KM3NeT neutrino telescope, more specifically for the Acoustic Positioning System (APS) and for the calibration of the acoustic neutrino detection technique. The KM3NeT project is a new optical-based deep-sea neutrino telescope, currently under construction. The main objectives of the KM3NeT telescope are the discovery and observation of high-energy neutrino sources in the Universe and the determination of the mass hierarchy of neutrinos. The KM3NeT detectors consist of three-dimensional arrays of light sensor modules distributed over large volumes of the transparent water in the deep Mediterranean Sea. The sensor modules register the time of arrival of the light and the brightness of the light to reconstruct the direction and energy of the neutrino. In order to achieve an accurate deployment of the mechanical structures and a precise reconstruction of neutrino induced events, the telescope includes an APS as mandatory sub-system that provides an accurate position of the mechanical structures in real time. Additionally, the APS could also be an excellent tool to study the feasibility of an acoustic neutrino detector and a possible correlation between acoustic and optical signals. The new detector KM3NeT is an excellent opportunity to continue with the study of the acoustic neutrino detection. The acoustic detection would allow the combination of the two neutrino detection techniques for a hybrid underwater neutrino telescope, especially considering that the optical based telescope needs acoustic sensors to monitor the position of the sensors. An Acoustic Beacon (AB) as part of the APS of KM3NeT has been developed in this thesis. Previously, the first emitter prototype was developed and it was installed in previous neutrino telescopes, such as ANTARES and NEMO, in order to be tested in situ. The analyses of the in situ test with the pro, El objetivo principal de esta investigación es el diseño y desarrollo de dos tipos de emisores acústicos diferentes para ser utilizados en el telescopio submarino de neutrinos KM3NeT, en concreto, uno como emisor en el sistema de posicionamiento acústico (APS) y otro para la calibración de la detección acústica de neutrinos. El proyecto KM3NeT es un telescopio óptico de neutrinos, que actualmente está en fase de construcción, y está ubicado en las profundidades del mar. Los objetivos principales del telescopio son el descubrimiento y la observación de las fuentes que originan los neutrinos de alta energía en el universo y la determinación de la jerarquía de masas de los neutrinos. Los detectores de KM3NeT consisten en conjuntos tridimensionales de módulos de sensores de luz distribuidos en grandes volúmenes de agua en las profundidades del mar Mediterráneo. Los módulos de sensores ópticos registran el tiempo de llegada de la luz y el brillo de la luz para reconstruir la dirección y la energía del neutrino. Con objeto de lograr una implementación correcta de las estructuras mecánicas y una reconstrucción precisa de los eventos del neutrino, el telescopio incluye el APS como subsistema necesario para proporcionar la posición exacta de las estructuras mecánicas en tiempo real. Además, el APS puede ser una herramienta excelente para estudiar la viabilidad de un detector de neutrinos acústico y de una posible correlación entre la señal acústica y óptica. El nuevo detector KM3NeT es una oportunidad para continuar con el estudio de detección acústica de neutrinos. La detección acústica permitiría la combinación de las dos técnicas de detección de neutrinos para un telescopio submarino de neutrinos híbrido, y más aún, teniendo en cuenta que el telescopio óptico necesita de sensores acústicos para monitorizar la posición de los sensores. En esta tesis, por un lado, se ha desarrollado un emisor acústico (AB) como parte del APS de KM3NeT. Previamente, se desarrolló el primer p, L'objectiu principal d'esta investigació és el disseny i desenvolupament de dos tipus d'emissors acústics diferents per a ser utilitzats en el telescopi submarí de neutrins KM3NET, en concret, ú com emissor en el sistema de posicionament acústic (APS) i altre per a la calibració de la detecció acústica de neutrins. El projecte KM3NET és un telescopi òptic de neutrins, que actualment està en fase de construcció, i està ubicat en les profunditats del mar. Els objectius principals del telescopi són el descobriment i l'observació de les fonts que originen els neutrins d'alta energia en l'univers i la determinació de la jerarquia de masses dels neutrins. Els detectors de KM3NET consisteixen en conjunts tridimensionals de mòduls de sensors de llum distribuïts en gran volums d'aigua en el Mediterrani. Els mòduls de sensors òptics registren el temps d'aplegada de la llum i la intensitat de la llum per a reconstruir la direcció i l'energia del neutrí. Com objectiu d'aconseguir una implementació correcta de les estructures mecàniques i una reconstrucció precisa dels events del neutrí, el telescopi inclou l'APS com subsistema necessari per a proporcionar la posició exacta de les estructures mecàniques en temps real. A mes, l'APS pot ser una ferramenta excel¿lent per a estudiar la viabilitat d'un detector de neutrins acústic i d'una possible correlació entre el senyal acústic i òptic. El nou detector KM3NET és una oportunitat per a continuar en l'estudi de detecció acústica del neutrí. La detecció acústica permetria la combinació de les dos tècniques de detecció de neutrins per a un telescopi submarí de neutrins híbrid, i més encara, tenint en compte que el telescopi òptic necessita de sensors acústics per a monitoritzar la posició dels sensors. En aquesta tesis, per un costat, s'ha dissenyat un emissor acústic (AB) com part de l'APS de KM3NET. Prèviament, se desenvolupà el primer prototip de l'emissor acústic, el qual s'instal¿là en anteriors telescopis de neutrins, concretame
Published: 2017

26. An algorithm for the reconstruction of high-energy neutrino-induced particle showers and its application to 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, Ministerio de Economía y Competitividad, Conseil Régional Provence-Alpes-Côte d'Azur, Conseil Régional d'Alsace, Agence Nationale de la Recherche, Francia, National Authority for Scientific Research, Rumanía, Institut Universitaire de France, Bundesministerium für Bildung und Forschung, Alemania, Foundation for Fundamental Research on Matter, Holanda, Centre National de la Recherche Scientifique, Francia, Ministère de l'Education Nationale, de la Formation professionnelle, de l'Enseignement Supérieur et de la Recherche Scientifique, Marruecos, European Regional Development Fund, Council on grants of the President of the Russian Federation, Netherlands Organization for Scientific Research, Region Ile-de-France, Generalitat Valenciana, Instituto Nazionale di Fisica Nucleare, Commissariat à l'Énergie Atomique et aux Énergies Alternatives, Francia, European Commission, Ardid Ramírez, Miguel, Felis-Enguix, Iván, Martínez Mora, Juan Antonio, Saldaña-Coscollar, María, Albert, A., Andre, M., Anghinolfi, M., Anton, G., Aubert, J. -J., Avgitas, T., Baret, B., Barrios-Martí, J., Basa, S., Bertin, V., Biagi, S., 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, Ministerio de Economía y Competitividad, Conseil Régional Provence-Alpes-Côte d'Azur, Conseil Régional d'Alsace, Agence Nationale de la Recherche, Francia, National Authority for Scientific Research, Rumanía, Institut Universitaire de France, Bundesministerium für Bildung und Forschung, Alemania, Foundation for Fundamental Research on Matter, Holanda, Centre National de la Recherche Scientifique, Francia, Ministère de l'Education Nationale, de la Formation professionnelle, de l'Enseignement Supérieur et de la Recherche Scientifique, Marruecos, European Regional Development Fund, Council on grants of the President of the Russian Federation, Netherlands Organization for Scientific Research, Region Ile-de-France, Generalitat Valenciana, Instituto Nazionale di Fisica Nucleare, Commissariat à l'Énergie Atomique et aux Énergies Alternatives, Francia, European Commission, Ardid Ramírez, Miguel, Felis-Enguix, Iván, Martínez Mora, Juan Antonio, Saldaña-Coscollar, María, Albert, A., Andre, M., Anghinolfi, M., Anton, G., Aubert, J. -J., Avgitas, T., Baret, B., Barrios-Martí, J., Basa, S., Bertin, V., and Biagi, S.
Abstract: A novel algorithm to reconstruct neutrino-induced particle showers within the ANTARES neutrino telescope is presented. The method achieves a median angular resolution of 6º, for shower energies below 100 TeV. Applying this algorithm to 6 years of data taken with the ANTARES detector, 8 events with reconstructed shower energies above 10 TeV are observed. This is consistent with the expectation of about 5 events from atmospheric backgrounds, but also compatible with diffuse astrophysical flux measurements by the IceCube collaboration, from which 2 4 additional events are expected. A 90% C.L. upper limit on the diffuse astrophysical neutrino flux with a value per neutrino flavour of E2·Oi 90% =4.9 cm-2· sr-1 is set, applicable to the energy range from 23 TeV to 7.8 PeV, assuming an unbroken E-2 spectrum and neutrino flavour equipartition at Earth.
Published: 2017

27. New constraints on all flavor Galactic diffuse neutrino emission 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, 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., Belhorma, B., Bertin, V., 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., Belhorma, B., Bertin, V., Felis-Enguix, Iván, Martínez Mora, Juan Antonio, and Saldaña-Coscollar, María
Abstract: [EN] The flux of very high-energy neutrinos produced in our Galaxy by the interaction of accelerated cosmic rays with the interstellar medium is not yet determined. The characterization of this flux will shed light on Galactic accelerator features, gas distribution morphology and Galactic cosmic ray transport. The central Galactic plane can be the site of an enhanced neutrino production, thus leading to anisotropies in the extraterrestrial neutrino signal as measured by the IceCube Collaboration. The ANTARES neutrino telescope, located in the Mediterranean Sea, offers a favorable view of this part of the sky, thereby allowing for a contribution to the determination of this flux. The expected diffuse Galactic neutrino emission can be obtained, linking a model of generation and propagation of cosmic rays with the morphology of the gas distribution in the Milky Way. In this paper, the so-called "gamma model" introduced recently to explain the high-energy gamma-ray diffuse Galactic emission is assumed as reference. The neutrino flux predicted by the "gamma model" depends on the assumed primary cosmic ray spectrum cutoff. Considering a radially dependent diffusion coefficient, this proposed scenario is able to account for the local cosmic ray measurements, as well as for the Galactic gamma-ray observations. Nine years of ANTARES data are used in this work to search for a possible Galactic contribution according to this scenario. All flavor neutrino interactions are considered. No excess of events is observed, and an upper limit is set on the neutrino flux of 1.1 (1.2) times the prediction of the "gamma model," assuming the primary cosmic ray spectrum cutoff at 5 (50) PeV. This limit excludes the diffuse Galactic neutrino emission as the major cause of the "spectral anomaly" between the two hemispheres measured by IceCube.
Published: 2017

28. Analyse and study of small fan noise

Author: Picó Vila, Rubén, Universitat Politècnica de València. Departamento de Física Aplicada - Departament de Física Aplicada, Universitat Politècnica de València. Instituto de Investigación para la Gestión Integrada de Zonas Costeras - Institut d'Investigació per a la Gestió Integrada de Zones Costaneres, Universitat Politècnica de València. Área de Posgrado - Àrea de Postgrau, Universitat Politècnica de València. Escuela Politécnica Superior de Gandia - Escola Politècnica Superior de Gandia, Saldaña Coscollar, María, Picó Vila, Rubén, Universitat Politècnica de València. Departamento de Física Aplicada - Departament de Física Aplicada, Universitat Politècnica de València. Instituto de Investigación para la Gestión Integrada de Zonas Costeras - Institut d'Investigació per a la Gestió Integrada de Zones Costaneres, Universitat Politècnica de València. Área de Posgrado - Àrea de Postgrau, Universitat Politècnica de València. Escuela Politécnica Superior de Gandia - Escola Politècnica Superior de Gandia, and Saldaña Coscollar, María
Abstract: The aim of this project is the study and analyze of factors that influence to noise power emitted by small fan. For it, in this study, has been a realized measurement of noise power level and parameters that influence in fan noise, with different types of axial small ventilators at special laboratory with correct method of calculation according to normative of the International Organization for Standardization (ISO)
Published: 2017

29. Search for high-energy neutrinos from gravitational wave event GW151226 and candidate LVT151012 with ANTARES and IceCube

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] The Advanced LIGO observatories detected gravitational waves from two binary black hole mergers during their first observation run (O1). We present a high-energy neutrino follow-up search for the second gravitational wave event, GW151226, as well as for gravitational wave candidate LVT151012. We find two and four neutrino candidates detected by IceCube, and one and zero detected by ANTARES, within +/- 500 s around the respective gravitational wave signals, consistent with the expected background rate. None of these neutrino candidates are found to be directionally coincident with GW151226 or LVT151012. We use nondetection to constrain isotropic-equivalent high-energy neutrino emission from GW151226, adopting the GW event's 3D localization, to less than 2 x 10(51)-2 x 10(54) erg.
Published: 2017

30. First all-flavor neutrino pointlike source search 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, 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., Belhorma, B., Bertin, V., 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., Belhorma, B., Bertin, V., Felis-Enguix, Iván, Martínez Mora, Juan Antonio, and Saldaña-Coscollar, María
Abstract: [EN] A search for cosmic neutrino sources using the data collected with the ANTARES neutrino telescope between early 2007 and the end of 2015 is performed. For the first time, all neutrino interactions-charged and neutral-current interactions of all flavors-are considered in a search for point-like sources with the ANTARES detector. In previous analyses, only muon neutrino charged-current interactions were used. This is achieved by using a novel reconstruction algorithm for shower-like events in addition to the standard muon track reconstruction. The shower channel contributes about 23% of all signal events for an E-2 energy spectrum. No significant excess over background is found. The most signal-like cluster of events is located at (alpha, delta) = (343.8 degrees, 23.5 degrees) with a significance of 1.9 sigma. The neutrino flux sensitivity of the search is about E(2)d Phi/dE = 6 x 10(-9) GeV cm(-2) s(-1) for declinations from -90 degrees up to -42 degrees, and below 10(-8) GeV cm(-2) s(-1) for declinations up to 5 degrees. The directions of 106 source candidates and 13 muon track events from the IceCube high-energy sample events are investigated for a possible neutrino signal and upper limits on the signal flux are determined.
Published: 2017

31. The prototype detection unit of the KM3NeT detector

Author: Adrián Martínez, Silvia, Ageron, M., Aharonian, F., Aiello, S., Albert, A., Ameli, F., Anassontzis, E.G., Androulakis, G. C., Anghinolfi, M., Anton, G., Anvar, S., Ardid Ramírez, Miguel, Llorens Alvarez, Carlos David, Martínez Mora, Juan Antonio, and Saldaña Coscollar, María
Subjects: Muons, PMTS, Physics::Instrumentation and Detectors, FISICA APLICADA, Project, Neutrino telescope
Abstract: [EN] A prototype detection unit of the KM3NeT deep-sea neutrino telescope has been installed at 3500m depth 80 km offshore the Italian coast. KM3NeT in its final configuration will contain several hundreds of detection units. Each detection unit is a mechanical structure anchored to the sea floor, held vertical by a submerged buoy and supporting optical modules for the detection of Cherenkov light emitted by charged secondary particles emerging from neutrino interactions. This prototype string implements three optical modules with 31 photomultiplier tubes each. These optical modules were developed by the KM3NeT Collaboration to enhance the detection capability of neutrino interactions. The prototype detection unit was operated since its deployment in May 2014 until its decommissioning in July 2015. Reconstruction of the particle trajectories from the data requires a nanosecond accuracy in the time calibration. A procedure for relative time calibration of the photomultiplier tubes contained in each optical module is described. This procedure is based on the measured coincidences produced in the sea by the K background light and can easily be expanded to a detector with several thousands of optical modules. The time offsets between the different optical modules are obtained using LED nanobeacons mounted inside them. A set of data corresponding to 600 h of livetime was analysed. The results show good agreement with Monte Carlo simulations of the expected optical background and the signal from atmospheric muons. An almost background-free sample of muons was selected by filtering the time correlated signals on all the three optical modules. The zenith angle of the selected muons was reconstructed with a precision of about 3 degrees., The research leading to these results has received funding from the European Community Sixth Framework Programme under Contract 011937 and the Seventh Framework Programme under Grant Agreement 212525.
Published: 2016
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32. The first combined search for neutrino point-sources in the Southern Hemisphere with the ANTARES and IceCube neutrino telescopes

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, Adrián Martínez, Silvia, Albert, A., André, M., Anton, G., Ardid Ramírez, Miguel, Aubert, J. -J., Baret, B., Barrios Martí, J., Basa, S., Bertin, V., Biagi, S., Bormuth, R., Felis-Enguix, Iván, 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, Adrián Martínez, Silvia, Albert, A., André, M., Anton, G., Ardid Ramírez, Miguel, Aubert, J. -J., Baret, B., Barrios Martí, J., Basa, S., Bertin, V., Biagi, S., Bormuth, R., Felis-Enguix, Iván, Martínez Mora, Juan Antonio, and Saldaña-Coscollar, María
Abstract: We present the results of searches for point-like sources of neutrinos based on the first combined analysis of data from both the ANTARES and IceCube neutrino telescopes. The combination of both detectors, which differ in size and location, forms a window in the southern sky where the sensitivity to point sources improves by up to a factor of 2 compared with individual analyses. Using data recorded by ANTARES from 2007 to 2012, and by IceCube from 2008 to 2011, we search for sources of neutrino emission both across the southern sky and from a preselected list of candidate objects. No signicant excess over background has been found in these searches, and flux upper limits for the candidate sources are presented for E-2.5 and E-2 power-law spectra with different energy cut-offs.
Published: 2016

33. The prototype detection unit of the KM3NeT detector

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, European Commission, Adrián Martínez, Silvia, Ageron, M., Aharonian, F., Aiello, S., Albert, A., Ameli, F., Anassontzis, E.G., Androulakis, G. C., Anghinolfi, M., Anton, G., Anvar, S., Ardid Ramírez, Miguel, Llorens Alvarez, Carlos David, 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, European Commission, Adrián Martínez, Silvia, Ageron, M., Aharonian, F., Aiello, S., Albert, A., Ameli, F., Anassontzis, E.G., Androulakis, G. C., Anghinolfi, M., Anton, G., Anvar, S., Ardid Ramírez, Miguel, Llorens Alvarez, Carlos David, Martínez Mora, Juan Antonio, and Saldaña Coscollar, María
Abstract: [EN] A prototype detection unit of the KM3NeT deep-sea neutrino telescope has been installed at 3500m depth 80 km offshore the Italian coast. KM3NeT in its final configuration will contain several hundreds of detection units. Each detection unit is a mechanical structure anchored to the sea floor, held vertical by a submerged buoy and supporting optical modules for the detection of Cherenkov light emitted by charged secondary particles emerging from neutrino interactions. This prototype string implements three optical modules with 31 photomultiplier tubes each. These optical modules were developed by the KM3NeT Collaboration to enhance the detection capability of neutrino interactions. The prototype detection unit was operated since its deployment in May 2014 until its decommissioning in July 2015. Reconstruction of the particle trajectories from the data requires a nanosecond accuracy in the time calibration. A procedure for relative time calibration of the photomultiplier tubes contained in each optical module is described. This procedure is based on the measured coincidences produced in the sea by the K background light and can easily be expanded to a detector with several thousands of optical modules. The time offsets between the different optical modules are obtained using LED nanobeacons mounted inside them. A set of data corresponding to 600 h of livetime was analysed. The results show good agreement with Monte Carlo simulations of the expected optical background and the signal from atmospheric muons. An almost background-free sample of muons was selected by filtering the time correlated signals on all the three optical modules. The zenith angle of the selected muons was reconstructed with a precision of about 3 degrees.
Published: 2016

34. Letter of intent for KM3NeT 2.0

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, Universitat Politècnica de València. Escuela Politécnica Superior de Gandia - Escola Politècnica Superior de Gandia, European Commission, Centre National de la Recherche Scientifique, Francia, Agence Nationale de la Recherche, Francia, Ministero dell'Istruzione dell'Università e della Ricerca, Italia, Ministerio de Educación y Ciencia, Adrián Martínez, Silvia, Ardid Ramírez, Miguel, Llorens Alvarez, Carlos David, Martínez Mora, Juan Antonio, Saldaña-Coscollar, María, Ageron, M., Aharonian, F., Aiello, S., Albert, A., Ameli, F., Anassontzis, E., Andre, M., Androulakis, G., Anghinolfi, M., Anton, G., 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, Universitat Politècnica de València. Escuela Politécnica Superior de Gandia - Escola Politècnica Superior de Gandia, European Commission, Centre National de la Recherche Scientifique, Francia, Agence Nationale de la Recherche, Francia, Ministero dell'Istruzione dell'Università e della Ricerca, Italia, Ministerio de Educación y Ciencia, Adrián Martínez, Silvia, Ardid Ramírez, Miguel, Llorens Alvarez, Carlos David, Martínez Mora, Juan Antonio, Saldaña-Coscollar, María, Ageron, M., Aharonian, F., Aiello, S., Albert, A., Ameli, F., Anassontzis, E., Andre, M., Androulakis, G., Anghinolfi, M., and Anton, G.
Abstract: [EN] The main objectives of the KM3NeT Collaboration are (i) the discovery and subsequent observation of high-energy neutrino sources in the Universe and (ii) the determination of the mass hierarchy of neutrinos. These objectives are strongly motivated by two recent important discoveries, namely: (1) the high-energy astrophysical neutrino signal reported by IceCube and (2) the sizable contribution of electron neutrinos to the third neutrino mass eigenstate as reported by Daya Bay, Reno and others. To meet these objectives, the KM3NeT Collaboration plans to build a new Research Infrastructure consisting of a network of deep-sea neutrino telescopes in the Mediterranean Sea. A phased and distributed implementation is pursued which maximises the access to regional funds, the availability of human resources and the synergistic opportunities for the Earth and sea sciences community. Three suitable deep-sea sites are selected, namely off-shore Toulon (France), Capo Passero (Sicily, Italy) and Pylos (Peloponnese, Greece). The infrastructure will consist of three so-called building blocks. A building block comprises 115 strings, each string comprises 18 optical modules and each optical module comprises 31 photo-multiplier tubes. Each building block thus constitutes a three-dimensional array of photo sensors that can be used to detect the Cherenkov light produced by relativistic particles emerging from neutrino interactions. Two building blocks will be sparsely configured to fully explore the IceCube signal with similar instrumented volume, different methodology, improved resolution and complementary field of view, including the galactic plane. One building block will be densely configured to precisely measure atmospheric neutrino oscillations.
Published: 2016

35. 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

36. High-energy neutrino follow-up search of gravitational wave event GW150914 with ANTARES and IceCube

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 Regional Development Fund, Institut Universitaire de France, LabEx UnivEarthS, Conseil Régional, Île-de-France, Conseil Régional d'Alsace, Conseil Régional Provence-Alpes-Côte d'Azur, Bundesministerium für Bildung und Forschung, Alemania, Instituto Nazionale di Fisica Nucleare, Foundation for Fundamental Research on Matter, Holanda, Netherlands Organization for Scientific Research, Government of the Netherlands, National Authority for Scientific Research, Rumanía, Agence de l'Oriental, Marruecos, Centre National pour la Recherche Scientifique et Technique, Marruecos, Agence Nationale de la Recherche, Francia, Region Ile-de-France, Adrián Martínez, Silvia, 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., 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 Regional Development Fund, Institut Universitaire de France, LabEx UnivEarthS, Conseil Régional, Île-de-France, Conseil Régional d'Alsace, Conseil Régional Provence-Alpes-Côte d'Azur, Bundesministerium für Bildung und Forschung, Alemania, Instituto Nazionale di Fisica Nucleare, Foundation for Fundamental Research on Matter, Holanda, Netherlands Organization for Scientific Research, Government of the Netherlands, National Authority for Scientific Research, Rumanía, Agence de l'Oriental, Marruecos, Centre National pour la Recherche Scientifique et Technique, Marruecos, Agence Nationale de la Recherche, Francia, Region Ile-de-France, Adrián Martínez, Silvia, 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., Felis Enguix, Iván, Martínez Mora, Juan Antonio, and Saldaña Coscollar, María
Abstract: [EN] We present the high-energy-neutrino follow-up observations of the first gravitational wave transient GW150914 observed by the Advanced LIGO detectors on September 14, 2015. We search for coincident neutrino candidates within the data recorded by the IceCube and ANTARES neutrino detectors. A possible joint detection could be used in targeted electromagnetic follow-up observations, given the significantly better angular resolution of neutrino events compared to gravitational waves. We find no neutrino candidates in both temporal and spatial coincidence with the gravitational wave event. Within sof the gravitational wave event, the number of neutrino candidates detected by IceCube and ANTARES were three and zero, respectively. This is consistent with the expected atmospheric background, and none of the neutrino candidates were directionally coincident with GW150914. We use this nondetection to constrain neutrino emission from the gravitational-wave event.
Published: 2016

37. A method to stabilise the performance of negatively fed KM3NeT photomultipliers

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, Universitat Politècnica de València. Escuela Politécnica Superior de Gandia - Escola Politècnica Superior de Gandia, Centre National de la Recherche Scientifique, Francia, European Commission, Agence Nationale de la Recherche, Francia, Ministerio de Economía y Competitividad, Generalitat Valenciana, Institut Universitaire de France, General Secretariat for Research and Technology, Grecia, Instituto Nazionale di Fisica Nucleare, Ministero dell'Istruzione dell'Università e della Ricerca, Italia, Netherlands Organization for Scientific Research, National Authority for Scientific Research, Rumanía, Adrián Martínez, Silvia, Ardid Ramírez, Miguel, Llorens Alvarez, Carlos David, Martínez Mora, Juan Antonio, Saldaña-Coscollar, María, Ageron, M., Aiello, S., Albert, A., Ameli, F., Anassontzis, E.G., Andre, M., Androulakis, G., Anghinolfi, M., Anton, G., Avgitas, T., 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, Universitat Politècnica de València. Escuela Politécnica Superior de Gandia - Escola Politècnica Superior de Gandia, Centre National de la Recherche Scientifique, Francia, European Commission, Agence Nationale de la Recherche, Francia, Ministerio de Economía y Competitividad, Generalitat Valenciana, Institut Universitaire de France, General Secretariat for Research and Technology, Grecia, Instituto Nazionale di Fisica Nucleare, Ministero dell'Istruzione dell'Università e della Ricerca, Italia, Netherlands Organization for Scientific Research, National Authority for Scientific Research, Rumanía, Adrián Martínez, Silvia, Ardid Ramírez, Miguel, Llorens Alvarez, Carlos David, Martínez Mora, Juan Antonio, Saldaña-Coscollar, María, Ageron, M., Aiello, S., Albert, A., Ameli, F., Anassontzis, E.G., Andre, M., Androulakis, G., Anghinolfi, M., Anton, G., and Avgitas, T.
Abstract: [EN] The KM3NeT research infrastructure, currently under construction in the Mediterranean Sea, will host neutrino telescopes for the identification of neutrino sources in the Universe and for studies of the neutrino mass hierarchy. These telescopes will house hundreds of thousands of photomultiplier tubes that will have to be operated in a stable and reliable fashion. In this context, the stability of the dark counts has been investigated for photomultiplier tubes with negative high voltage on the photocathode and held in insulating support structures made of 3D printed nylon material. Small gaps between the rigid support structure and the photomultiplier tubes in the presence of electric fields can lead to discharges that produce dark count rates that are highly variable. A solution was found by applying the same insulating varnish as used for the high voltage bases directly to the outside of the photomultiplier tubes. This transparent conformal coating provides a convenient and inexpensive method of insulation.
Published: 2016

38. Optical and X-ray early follow-up of ANTARES neutrino alerts

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 d'Alsace, Agence Nationale de la Recherche, Francia, Region Ile-de-France, European Regional Development Fund, Département du Var and Ville de La Seyne-sur-Mer, Foundation for Fundamental Research on Matter, Holanda, Council on grants of the President of the Russian Federation, National Authority for Scientific Research, Rumanía, Centre National pour la Recherche Scientifique et Technique, Marruecos, Netherlands Organization for Scientific Research, Centre National de la Recherche Scientifique, Francia, Commissariat à l'Énergie Atomique et aux Énergies Alternatives, Francia, Bundesministerium für Bildung und Forschung, Alemania, Instituto Nazionale di Fisica Nucleare, Generalitat Valenciana, European Commission, Agence de l'Oriental, Marruecos, Adrián Martínez, Silvia, Ardid Ramírez, Miguel, Bou Cabo, Manuel, Felis-Enguix, Iván, Herrero Debón, Alicia, Martínez Mora, Juan Antonio, Saldaña-Coscollar, María, Ageron, M., Albert, A., Al Samarai, I., André, M., Anton, G., Aubert, J. -J., Baret, B., Barrios-Martí, J., 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 d'Alsace, Agence Nationale de la Recherche, Francia, Region Ile-de-France, European Regional Development Fund, Département du Var and Ville de La Seyne-sur-Mer, Foundation for Fundamental Research on Matter, Holanda, Council on grants of the President of the Russian Federation, National Authority for Scientific Research, Rumanía, Centre National pour la Recherche Scientifique et Technique, Marruecos, Netherlands Organization for Scientific Research, Centre National de la Recherche Scientifique, Francia, Commissariat à l'Énergie Atomique et aux Énergies Alternatives, Francia, Bundesministerium für Bildung und Forschung, Alemania, Instituto Nazionale di Fisica Nucleare, Generalitat Valenciana, European Commission, Agence de l'Oriental, Marruecos, Adrián Martínez, Silvia, Ardid Ramírez, Miguel, Bou Cabo, Manuel, Felis-Enguix, Iván, Herrero Debón, Alicia, Martínez Mora, Juan Antonio, Saldaña-Coscollar, María, Ageron, M., Albert, A., Al Samarai, I., André, M., Anton, G., Aubert, J. -J., Baret, B., and Barrios-Martí, J.
Abstract: High-energy neutrinos could be produced in the interaction of charged cosmic rays with matter or radiation surrounding astrophysical sources. Even with the recent detection of extraterrestrial high-energy neutrinos by the IceCube experiment, no astrophysical neutrino source has yet been discovered. Transient sources, such as gamma-ray bursts, core-collapse supernovae, or active galactic nuclei are promising candidates. Multi-messenger programs oﬀer a unique opportunity to detect these transient sources. By combining the information provided by the ANTARES neutrino telescope with information coming from other observa-tories, the probability of detecting a source is enhanced, allowing the possibility of identifying a neutrino progenitor from a single detected event. A method based on optical and X-ray follow-ups of high-energy neutrino alerts has been developed within the ANTARES collaboration. This method does not require any assumptions on the relation between neutrino and photon spectra other than time-correlation. This program, denoted as TAToO, triggers a network of robotic optical telescopes (TAROT and ROTSE) and the Swift-XRT with a delay of only a few seconds after a neutrino detection, and is therefore well-suited to search for fast transient sources. To identify an optical or X-ray counterpart to a neutrino signal, the images provided by the follow-up observations are analysed with dedicated pipelines. A total of 42 alerts with optical and 7 alerts with X-ray images taken with a maximum delay of 24 hours after the neutrino trigger have been analysed. No optical or X-ray counterparts associated to the neutrino triggers have been found, and upper limits on transient source magnitudes have been derived. The probability to reject the gamma-ray burst origin hypothesis has been computed for each alert.
Published: 2016

39. A search for Secluded Dark Matter in the Sun 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. 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 d'Alsace, Agence Nationale de la Recherche, Francia, Département du Var and Ville de La Seyne-sur-Mer, Region Ile-de-France, Instituto Nazionale di Fisica Nucleare, 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, Centre National de la Recherche Scientifique, Francia, Agence de l'Oriental, Marruecos, Foundation for Fundamental Research on Matter, Holanda, Centre National pour la Recherche Scientifique et Technique, Marruecos, Ministerio de Economía y Competitividad, Netherlands Organization for Scientific Research, European Commission, National Authority for Scientific Research, Rumanía, Institut Universitaire de France, European Regional Development Fund, Generalitat Valenciana, Adrián Martínez, Silvia, Albert, A., Andre, M., Anton, G., Ardid Ramírez, Miguel, Aubert, J. -J., Avgitas, T., Baret, B., Barrios Marti, J., Basa, S., Bertin, V., Bou Cabo, Manuel, Felis Enguix, Iván, 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 d'Alsace, Agence Nationale de la Recherche, Francia, Département du Var and Ville de La Seyne-sur-Mer, Region Ile-de-France, Instituto Nazionale di Fisica Nucleare, 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, Centre National de la Recherche Scientifique, Francia, Agence de l'Oriental, Marruecos, Foundation for Fundamental Research on Matter, Holanda, Centre National pour la Recherche Scientifique et Technique, Marruecos, Ministerio de Economía y Competitividad, Netherlands Organization for Scientific Research, European Commission, National Authority for Scientific Research, Rumanía, Institut Universitaire de France, European Regional Development Fund, Generalitat Valenciana, Adrián Martínez, Silvia, Albert, A., Andre, M., Anton, G., Ardid Ramírez, Miguel, Aubert, J. -J., Avgitas, T., Baret, B., Barrios Marti, J., Basa, S., Bertin, V., Bou Cabo, Manuel, Felis Enguix, Iván, Martínez Mora, Juan Antonio, and Saldaña Coscollar, María
Abstract: A search for Secluded Dark Matter annihilation in the Sun using 2007 2012 data of the ANTARES neutrino telescope is presented. Three different cases are considered: a) detection of dimuons that result from the decay of the mediator, or neutrino detection from: b) mediator that decays into a dimuon and, in turn, into neutrinos, and c) mediator that decays directly into neutrinos. As no significant excess over background is observed, constraints are derived on the dark matter mass and the lifetime of the mediator.
Published: 2016

40. Transducer development and characterization for underwater acoustic neutrino detection calibration

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, Ministerio de Economía y Competitividad, Generalitat Valenciana, Ministerio de Ciencia e Innovación, Saldaña-Coscollar, María, Llorens Alvarez, Carlos David, Felis-Enguix, Iván, Martínez Mora, Juan Antonio, Ardid Ramírez, Miguel, 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, Ministerio de Economía y Competitividad, Generalitat Valenciana, Ministerio de Ciencia e Innovación, Saldaña-Coscollar, María, Llorens Alvarez, Carlos David, Felis-Enguix, Iván, Martínez Mora, Juan Antonio, and Ardid Ramírez, Miguel
Abstract: [EN] A short bipolar pressure pulse with pancake directivity is produced and propagated when an Ultra-High Energy (UHE) neutrino interacts with a nucleus in water. Nowadays, acoustic sensor networks are being deployed in deep seas to detect this phenomenon as a first step toward building a neutrino telescope. In order to study the feasibility of the method, it is critical to have a calibrator that is able to mimic the neutrino signature. In previous works the possibility of using the acoustic parametric technique for this aim was proven. In this study, the array is operated at a high frequency and, by means of the parametric effect, the emission of the low-frequency acoustic bipolar pulse is generated mimicking the UHE neutrino acoustic pulse. To this end, the development of the transducer to be used in the parametric array is described in all its phases. The transducer design process, the characterization tests for the bare piezoelectric ceramic, and the addition of backing and matching layers are presented. The efficiencies and directivity patterns obtained for both primary and parametric beams confirm that the design of the proposed calibrator meets all the requirements for the emitter.
Published: 2016

41. A compact array calibrator to study the feasibility of acoustic neutrino detection

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, Ministerio de Economía y Competitividad, Generalitat Valenciana, Ardid Ramírez, Miguel, Camarena Femenia, Francisco, Felis-Enguix, Iván, Herrero Debón, Alicia, Llorens Alvarez, Carlos David, 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, Ministerio de Economía y Competitividad, Generalitat Valenciana, Ardid Ramírez, Miguel, Camarena Femenia, Francisco, Felis-Enguix, Iván, Herrero Debón, Alicia, Llorens Alvarez, Carlos David, Martínez Mora, Juan Antonio, and Saldaña-Coscollar, María
Abstract: [EN] Underwater acoustic detection of ultra-high-energy neutrinos was proposed already in 1950s: when a neutrino interacts with a nucleus in water, the resulting particle cascade produces a pressure pulse that has a bipolar temporal structure and propagates within a ﬂat disk-like volume. A telescope that consists of thousands of acoustic sensors deployed in the deep sea can monitor hundreds of cubic kilometres of water looking for these signals and discriminating them from acoustic noise. To study the feasibility of the technique it is critical to have a calibrator able to mimic the neutrino signature that can be operated from a vessel. Due to the axial-symmetry of the signal, their very directive short bipolar shape and the constraints of operating at sea, the development of such a calibrator is very challenging. Once the possibility of using the acoustic parametric technique for this aim was validated with the ﬁrst compact array calibrator prototype, in this paper we describe the new design for such a calibrator composed of an array of piezo ceramic tube transducers emitting in axial direction.
Published: 2016

42. Limits on dark matter annihilation in the sun using 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, European Commission, European Regional Development Fund, Institut Universitaire 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, Agence Nationale de la Recherche, Francia, Conseil Régional, Île-de-France, Adrián Martínez, Silvia, Albert, A., André, M., Anton, G., Ardid Ramírez, Miguel, Aubert, J-J., Avgitas, T., Baret, B., Barrios-Martí, 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, 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, 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, Agence Nationale de la Recherche, Francia, Conseil Régional, Île-de-France, Adrián Martínez, Silvia, Albert, A., André, M., Anton, G., Ardid Ramírez, Miguel, Aubert, J-J., Avgitas, T., Baret, B., Barrios-Martí, J., Basa, S., Bertin, V., Biagi, S., Felis-Enguix, Iván, Martínez Mora, Juan Antonio, and Saldaña-Coscollar, María
Abstract: [EN] A search for muon neutrinos originating from dark matter annihilations in the Sun is performed using the data recorded by the ANTARES neutrino telescope from 2007 to 2012. In order to obtain the best possible sensitivities to dark matter signals, an optimisation of the event selection criteria is performed taking into account the background of atmospheric muons, atmospheric neutrinos and the energy spectra of the expected neutrino signals. No significant excess over the background is observed and 90% C.L. upper limits on the neutrino flux, the spin-dependent and spin-independent WIMP-nucleon cross-sections are derived for WIMP masses ranging from 50 GeV to 5TeV for the annihilation channels WIMP + WIMP -> bb¯, W +W- and t+t-.
Published: 2016

43. Long term monitoring of the optical background in the Capo Passero deep-sea site with the NEMO tower prototype

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, Sponsoring Consortium for Open Access Publishing in Particle Physics, Adrián Martínez, Silvia, Aiello, S., Ameli, F, Anghinolfi, M., Ardid Ramírez, Miguel, Barbarino, G., Barbarito, E., Barbato, F. C. T., Beverini, N., Biagi, S., Biagioni, A., Bouhadef, B., Bozza, C., Llorens Alvarez, Carlos David, 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, Sponsoring Consortium for Open Access Publishing in Particle Physics, Adrián Martínez, Silvia, Aiello, S., Ameli, F, Anghinolfi, M., Ardid Ramírez, Miguel, Barbarino, G., Barbarito, E., Barbato, F. C. T., Beverini, N., Biagi, S., Biagioni, A., Bouhadef, B., Bozza, C., Llorens Alvarez, Carlos David, and Saldaña Coscollar, María
Abstract: The NEMO Phase-2 tower is the first detector which was operated underwater for more than 1 year at the "record" depth of 3500 m. It was designed and built within the framework of the NEMO (NEutrino Mediterranean Observatory) project. The 380 m high tower was successfully installed in March 2013 80 km offshore Capo Passero (Italy). This is the first prototype operated on the site where the Italian node of the KM3NeT neutrino telescope will be built. The installation and operation of the NEMO Phase-2 tower has proven the functionality of the infrastructure and the operability at 3500 m depth. A more than 1 year long monitoring of the deep water characteristics of the site has been also provided. In this paper the infrastructure and the tower structure and instrumentation are described. The results of long term optical background measurements are presented. The rates show stable and low baseline values, compatible with the contribution of K-40 light emission, with a small percentage of light bursts due to bioluminescence. All these features confirm the stability and good optical properties of the site.
Published: 2016

44. Murchison Widefield Array limits on radio emission from ANTARES neutrino events

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 d'Alsace, National Science Foundation, EEUU, Agence de l'Oriental, Marruecos, 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, Centre National de la Recherche Scientifique, Francia, Netherlands Organization for Scientific Research, Laboratoire d'Excellence OCEVU (Origines, Constituants & ÉVolution de l'Univers), Instituto Nazionale di Fisica Nucleare, NVIDIA, Bundesministerium für Bildung und Forschung, Alemania, Generalitat Valenciana, European Commission, Council on grants of the President of the Russian Federation, Region Ile-de-France, Département du Var and Ville de La Seyne-sur-Mer, Foundation for Fundamental Research on Matter, Holanda, Croft, S., Kaplan, D.L., Tingay, S.J., Murphy, T., Bell, M.E., Rowlinson, A., Adrián Martínez, Silvia, Ageron, M., Albert, A., André, M., Anton, G., Ardid Ramírez, Miguel, Felis-Enguix, Iván, 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 d'Alsace, National Science Foundation, EEUU, Agence de l'Oriental, Marruecos, 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, Centre National de la Recherche Scientifique, Francia, Netherlands Organization for Scientific Research, Laboratoire d'Excellence OCEVU (Origines, Constituants & ÉVolution de l'Univers), Instituto Nazionale di Fisica Nucleare, NVIDIA, Bundesministerium für Bildung und Forschung, Alemania, Generalitat Valenciana, European Commission, Council on grants of the President of the Russian Federation, Region Ile-de-France, Département du Var and Ville de La Seyne-sur-Mer, Foundation for Fundamental Research on Matter, Holanda, Croft, S., Kaplan, D.L., Tingay, S.J., Murphy, T., Bell, M.E., Rowlinson, A., Adrián Martínez, Silvia, Ageron, M., Albert, A., André, M., Anton, G., Ardid Ramírez, Miguel, Felis-Enguix, Iván, Martínez Mora, Juan Antonio, and Saldaña Coscollar, María
Abstract: We present a search, using the Murchison Widefield Array (MWA), for electromagnetic (EM) counterparts to two candidate high-energy neutrino events detected by the ANTARES neutrino telescope in 2013 November and 2014 March. These events were selected by ANTARES because they are consistent, within 0 degrees.4, with the locations of galaxies within 20 Mpc of Earth. Using MWA archival data at frequencies between 118 and 182 MHz, taken similar to 20. days prior to, at the same time as, and up to a year after the neutrino triggers, we look for transient or strongly variable radio sources that are consistent with the neutrino positions. No such counterparts are detected, and we set a 5 sigma upper limit for low-frequency radio emission of similar to 10(37) erg s(-1) for progenitors at 20 Mpc. If the neutrino sources are instead not in nearby galaxies, but originate in binary neutron star coalescences, our limits place the progenitors at z greater than or similar to 0.2. While it is possible, due to the high background from atmospheric neutrinos, that neither event is astrophysical, the MWA observations are nevertheless among the first to follow up neutrino candidates in the radio, and illustrate the promise of wide-field instruments like MWA for detecting EM counterparts to such events.
Published: 2016

45. 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

46. Estudio de la calibración de sensores acústicos por el método de reciprocidad para diferentes geometrías. Aplicación a la evolución temporal de la sensibilidad de los hidrófonos en instalaciones in situ

Author: Martínez Mora, Juan Antonio, Felis Enguix, Iván, 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, Universitat Politècnica de València. Instituto de Investigación para la Gestión Integrada de Zonas Costeras - Institut d'Investigació per a la Gestió Integrada de Zones Costaneres, Universitat Politècnica de València. Área de Posgrado - Àrea de Postgrau, Universitat Politècnica de València. Escuela Politécnica Superior de Gandia - Escola Politècnica Superior de Gandia, Gómez Magenti, Pablo, Martínez Mora, Juan Antonio, Felis Enguix, Iván, 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, Universitat Politècnica de València. Instituto de Investigación para la Gestión Integrada de Zonas Costeras - Institut d'Investigació per a la Gestió Integrada de Zones Costaneres, Universitat Politècnica de València. Área de Posgrado - Àrea de Postgrau, Universitat Politècnica de València. Escuela Politécnica Superior de Gandia - Escola Politècnica Superior de Gandia, and Gómez Magenti, Pablo
Abstract: Este proyecto consiste en un estudio de los dos principales métodos empleados para calibrar transductores acústicos: el método de comparación directa y el método de reciprocidad. El primero presenta la desventaja de que requiere que al menos uno de los dos transductores empleados esté previamente calibrado, pero cuenta con la ventaja de que precisa de menor equipamiento y la toma de medidas es más simple. El método de reciprocidad necesita de tres transductores, pero ofrece la ventaja de que es posible realizar calibraciones sin la necesidad de tener ningún transductor de referencia. En las calibraciones realizadas habitualmente, en laboratorio, los transductores a calibrar son situados enfrentados entre sí al aplicar el método de comparación directa, y en los vértices de un triángulo equilátero al utilizar el método de reciprocidad. Existen, sin embargo, instalaciones de sensores como los telescopios submarinos de neutrinos ANTARES o KM3NeT, situadas a gran profundidad bajo el mar, donde debido a la difícil accesibilidad no es posible situar los transductores de acuerdo a la geometría de un triángulo equilátero. El método de reciprocidad también permite trabajar con geometrías asimétricas, y esta posibilidad, junto con la ventaja de no utilizar transductores de referencia, convierte a este método en el método de calibración más interesante para llevar a cabo calibraciones in situ en instalaciones o redes de sensores., This project consists of an analysis of the two main methods used to calibrate acoustic transducers: the comparison method and the reciprocity method. The first one has the advantage that the procedure to take the measurements is simple. Its disadvantage is that it’s needed that at least one of the two transducers required is previously calibrated. On the other hand, the reciprocity method, which requires three transducers, has the advantage that allows to make calibrations having no calibrated transducer. Usually, calibrations are performed in laboratories, where the transducers are located opposite each other when applying the comparison method, and placed in an equilateral triangle geometry when applying the reciprocity method. However, sometimes it’s needed to calibrate transducers belonging to submarine acoustic sensor networks like ANTARES and KM3NeT, located deep under the sea, and it’s not possible to place them in the traditional symmetric geometries. Besides not requiring previously calibrated transducer, the reciprocity method also allows to work with asymmetric geometries, and that makes this method the most interesting one to calibrate transducers in situ on sensor networks.
Published: 2016

47. Ultrasonic transmitter for positioning of the large underwater neutrino telescope KM3NeT

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, Universitat Politècnica de València. Escuela Politécnica Superior de Gandia - Escola Politècnica Superior de Gandia, European Commission, Ministerio de Economía y Competitividad, Ministerio de Ciencia e Innovación, Saldaña Coscollar, María, Adrián Martínez, Silvia, Bou Cabo, Manuel, Felis Enguix, Iván, Larosa, Giuseppina, Llorens Alvarez, Carlos David, Martínez Mora, Juan Antonio, Ardid Ramírez, Miguel, 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, Universitat Politècnica de València. Escuela Politécnica Superior de Gandia - Escola Politècnica Superior de Gandia, European Commission, Ministerio de Economía y Competitividad, Ministerio de Ciencia e Innovación, Saldaña Coscollar, María, Adrián Martínez, Silvia, Bou Cabo, Manuel, Felis Enguix, Iván, Larosa, Giuseppina, Llorens Alvarez, Carlos David, Martínez Mora, Juan Antonio, and Ardid Ramírez, Miguel
Abstract: This article belongs to a special issue: 43rd Annual UIA Symposium 23—25 April 2014 CSIC Madrid, Spain. Edited By Margaret Lucas and Enrique Riera, [EN] Underwater ultrasonic transducers are commonly used for marine applications including communication and positioning systems. In this work, an ultrasonic transmitter transducer developed for the very large underwater neutrino telescope KM3NeT positioning is presented. The telescope infrastructure will have some degree of motion due to sea current; hence a positioning system is needed in order to monitor the position of the optical sensors. For this purpose, a reliable and affordable positioning based on acoustic systems is used. The ultrasound transmitter prototype developed as part of the positioning system is composed of a commercial FFR transducer and specifically designed electronics to optimize the system and fulfil the requirements of the KM3NeT infrastructure. The transmitter is able to generate high-power short signals with arbitrary waveform in a range of 20 kHz - 40 kHz and withstand high pressures. Signal processing techniques such as advanced cross-correlation methods and filtering as well as broad-band ultrasound signals are also applied for optimizing the acoustic emission and position detection. The work done for a precise laboratory testing and optimization of the system is described. The prototype has been integrated in the ANTARES neutrino telescope for testing its accuracy and the reach in situ. The test results obtained are also presented in this communication.
Published: 2015

48. Acoustic positioning system for KM3NeT

Author: Universitat Politècnica de València. Departamento de Física Aplicada - Departament de Física Aplicada, Viola, S., Ardid Ramírez, Miguel, Bertin, V., Lahmann, R., Pellegrino, C., Riccobene, G., Saldaña-Coscollar, María, Sapienza, P., Simeone, F., Universitat Politècnica de València. Departamento de Física Aplicada - Departament de Física Aplicada, Viola, S., Ardid Ramírez, Miguel, Bertin, V., Lahmann, R., Pellegrino, C., Riccobene, G., Saldaña-Coscollar, María, Sapienza, P., and Simeone, F.
Abstract: [EN] KM3NeT is the next generation neutrino telescope in the Mediterranean Sea employing the technique of Cherenkov photon detection. The Acoustic Positioning System (APS) is a mandatory sub-system of KM3NeT that must provide the position of the telescope¿s mechanical structures, in a geo-referenced coordinate system. The APS is important for a safe and accurate deployment of the mechanical structures and, for the sake of science, for precise reconstruction of neutrinoinduced events. The KM3NeT APS is composed of three main sub-systems: 1) an array of acoustic receivers rigidly connected to the telescope mechanical structures; 2) a Long Base-Line (LBL) of acoustic transmitters (beacons) and receivers, anchored on the seabed at known positions; 3) a farm of PCs for the acoustic data analysis, on-shore. On shore, the positions of the acoustic receivers are calculated by measuring the ToF (Time Of Flight) of the LBL beacons¿ signals on the acoustic receivers, thus determining, via multi-lateration, the position of the acoustic receivers with respect to the geo-referenced LBL. The synchronized and syntonized electronics and the data transmission/acquisition allows for calculating the latencies of the whole data acquisition chain with an accuracy of better than 100 ns. The APS, in combination with compass and tilt, pressure, current and sound velocity data, is expected to measure the positions of the digital optical modules in the deep sea with an accuracy of about 10 cm. Since data are continuously transmitted to shore and distributed to the local data acquisition network at the shore station, acoustic data are available also for Earth and Sea science users. The KM3NeT APS is also an excellent tool to study the feasibility of an acoustic neutrino detector and a possible correlation between acoustic and optical signals.
Published: 2015

49. Study of acoustic signals for the neutrino detector AMADEUS-ANTARES

Author: Saldaña Coscollar, María
Subjects: Acoustic detection, Analisis de señales acusticas, Hydrophone array, Máster Universitario en Ingeniería Acústica-Màster Universitari en Enginyeria Acústica, Neutrinos, Uhe neutrinos, Detección acústica, Acoustic signal analysis, Array de hidrófonos
Abstract: Este proyecto estudia aspectos acústicos pertenecientes al proyecto europeo ANTARES. Por una parte, se centra en el análisis de las señales acústicas recibidas en el sistema de posicionamiento AMADEUS-ANTARES. El programa analiza las señales captadas por los sensores, las analiza de manera individual, aplicando una serie de filtros y transformaciones, extrayendo, la frecuencia, fase y amplitud propia de la señal. A continuación, fija el tiempo de subida y de bajada apropiado para la señal, con el que se obtiene su duración. La aplicación es diseñada con objetivo de automatizar la detección y análisis de las señales recibidas del sistema, consiguiendo mayor precisión en la reconstrucción del posicionamiento de fuentes. Por otra parte, se lleva a cabo el diseño y calibración de un array lineal de ocho hidrófonos que genera, de manera artificial, el pulso bipolar de energía ultra alta generado por el neutrino en su interacción con el agua. El objetivo del array es transmitir al detector acústico de ANTARES la señal bipolar con similares características en amplitud, forma y directividad a la señal acústica creada por el neutrino en el agua. La calibración es desarrollada combinando métodos de procesado de señal junto con medidas experimentales. El array de hidrófonos es posicionado coherentemente en fase, a distancias conocidas. Aplicado el "delay" correspondiente, la señal acústica bipolar es obtenida con mayor amplitud y directividad. La simulación del array acústico es estudiada con el objetivo de conocer la longitud y diseño idóneo para la correcta transmisión de la señal bipolar hasta el detector. This academic work study acoustic aspects of the ANTARES detector European project. For the one hand, the signal analysis processing for the acoustic signals received by the AMADEUS-ANTARES. The software developed analyses the received signal of each sensor and analyses them individually, applying specific filters and transformations in the frequency and time domain, getting the phase, frequency and amplitude belonged to the signal. For the next step, it fixes the Rise Time and Fall Time appropriated for the signal what with is obtained the signal duration. The application is developed for automating the detection and analysis of the received signals from the positioning system, achieving higher accuracy. For the other hand, an eight lineal array hydrophone is designed and calibrated for generate the artificial Ultra High Energy (UHE) neutrino-induced pulses. The array goal is the transmission of the bipolar acoustic signal pulse mimicking (simulating) the neutrino acoustic signal in terms of amplitude, shape and directivity to the ANTARES detector. The calibration is developed using signal processing methods within experimental measures. The array hydrophone is located coherently in phase with known distances. Hence, the delay between them is applied to get a higher amplitude and directivity acoustic bipolar pulse. The acoustic array simulation is studied in order to know the length and design for the proper bipolar signal transmission to the detector.
Published: 2011

50. A search for time dependent neutrino emission from microquasars 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, 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, Agence de l'Oriental, Marruecos, Centre National pour la Recherche Scientifique et Technique, Marruecos, Adrián Martínez, Silvia, Ardid Ramírez, Miguel, Felis-Enguix, Iván, Larosa, Giuseppina, Martínez Mora, Juan Antonio, Saldaña-Coscollar, María, Albert, A., André, M., Anghinolfi, M., Anton, G., Astraatmadja, T., Aubert, J.-J., Baret, B., Barrios, J., Basa, S., 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, Agence de l'Oriental, Marruecos, Centre National pour la Recherche Scientifique et Technique, Marruecos, Adrián Martínez, Silvia, Ardid Ramírez, Miguel, Felis-Enguix, Iván, Larosa, Giuseppina, Martínez Mora, Juan Antonio, Saldaña-Coscollar, María, Albert, A., André, M., Anghinolfi, M., Anton, G., Astraatmadja, T., Aubert, J.-J., Baret, B., Barrios, J., and Basa, S.
Abstract: [EN] Results are presented on a search for neutrino emission from a sample of six microquasars, based on the data collected by the ANTARES neutrino telescope between 2007 and 2010. By means of appropriate time cuts, the neutrino search has been restricted to the periods when the acceleration of relativistic jets was taking place at the microquasars under study. The time cuts have been chosen using the information from the X-ray telescopes RXTE/ASM and Swift/BAT, and, in one case, the gamma-ray telescope Fermi/LAT. No statistically significant excess has been observed, thus upper limits on the neutrino fluences have been derived and compared to the predictions by models. Constraints have been put on the ratio of proton to electron luminosity in the jets.
Published: 2014

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