Exploració per tema "Astrofísica"

Ara es mostren els items 61-80 de 224

    • Electron density retrieval from truncated Radio Occultation GNSS data 

      Lyu, Haixia; Hernández Pajares, Manuel; Monte Moreno, Enrique; Cardellach Galí, Estel (2019-06-01)
      Article
      Accés obert
      This paper summarizes the definition and validation of two complementary new strategies, to invert incomplete Global Navigation Satellite System Radio-Occultation (RO) ionospheric measurements, such as the ones to be ...

    • Enrico Fermi : de les partícules a l'astrofísica 

      Hernández Fernández, Antonio (2018-12)
      Capítol de llibre
      Accés obert
      Enrico Fermi (1901-1954) va revolucionar la física del segle XX tot capitanejant el desenvolupament de la física nuclear i de partícules, disciplines que, com veurem, va connectar amb l’astronomia, entre d’altres matèries, ...

    • Ernst K. Zinner (1937-2015) 

      Nittler, L.; José Pont, Jordi (2017)
      Text en actes de congrés
      Accés obert

    • Event reconstruction for KM3NeT/ORCA using convolutional neural networks 

      Aiello, S; Albert, A.; Alves Garre, Sergio; Ameli, F; André, Michel; Androulakis, Giorgos; Anghinolfi, Marco; Anguita, M.; Anton, Gisela; Aublin, J.; Bagatelas, Christos; Barbarino, G.C.; Baret, B. (2020-10-01)
      Article
      Accés obert
      The KM3NeT research infrastructure is currently under construction at two locations in the Mediterranean Sea. The KM3NeT/ORCA water-Cherenkov neutrino detector off the French coast will instrument several megatons of ...

    • Expectations for the high-energy neutrino detection from starburst galaxies with KM3NeT/ARCA 

      Ageron, M.; Aiello, S; Albert, Arthur; Alshamsi, Mohammed; Alves Garre, Sergio; Aly, Zineb; Ambrosone, Antonio; Ameli, F; André, Michel; Androulakis, Giorgos; Anghinolfi, Marco; Anguita, M. (arXiv, 2021)
      Text en actes de congrés
      Accés obert
      Star-forming galaxies (SFGs) and starburst galaxies (SBGs) are extragalactic sources which could produce high-energy neutrinos. In principle, they could play a rather important role for explaining at least a sizeable part ...

    • Experiments on the Ionospheric Models in GNSS 

      Vinh, La The; Quang, Phuong Xuan; García Rigo, Alberto; Rovira Garcia, Adrià; Ibáñez Segura, Deimos (2013)
      Text en actes de congrés
      Accés obert
      In GNSS, one of the main error sources of the Standard Positioning Service (SPS) is introduced by the ionosphere. Although this error can be cancelled by combining two signals at different frequencies, most of the ...

    • Experiments with neutron beams for the astrophysical s process 

      Lederer, Claudia; Altstadt, Sebastian; Andrzejewski, Józef; Calviño Tavares, Francisco; Cortés Rossell, Guillem Pere; Gómez Hornillos, María Belén (Institute of Physics (IOP), 2013)
      Text en actes de congrés
      Accés obert
      Neutron capture cross sections are the key nuclear physics input to study the slow neutron capture process, which is responsible for forming about half of the elemental abundances above Fe. Stellar neutron capture cross ...

    • First all-flavor neutrino pointlike source search with the ANTARES neutrino telescope 

      André, Michel; Anghinolfi, Marco; Anton, G.; Avgitas, T.; Bertin, V.; Bormuth, R.; Puricelli, Stefano; Coniglione, R.; Lefèvre, Dominique; Michael, Turner; Pellegrino, Carlo; Piattelli, P.; Sanchez Losa, Agustín; Trovato, A.; Zúñiga Román, Juan (2017-10-03)
      Article
      Accés obert
      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 ...

    • First measurement of the 34S(p,gamma)35Cl reaction rate through indirect methods for presolar nova grains 

      Gillespie, S; Parikh, A.; Barton, C; Faestermann, Thomas; José Pont, Jordi; Hertenberger, R.; Wirth, Hans Friedrich; de Séréville, N; Riley, J; Williams, M (AMER PHYSICAL SOC, 2017-08-02)
      Article
      Accés obert
      Sulphur isotopic ratio measurements may help to establish the astrophysical sites in which certain presolar grains were formed. Nova model predictions of the 34S/32S ratio are, however, unreliable due to the lack of an ...

    • First observation of the cosmic ray shadow of the moon and the sun with KM3NeT/ORCA 

      Aiello, S; Albert, Arthur; Alves Garre, Sergio; Aly, Zineb; Ambrosone, Antonio; Ameli, F; André, Michel; Anghinolfi, Marco; Anguita, M.; Ardid Ramírez, Miguel; Ardid Ramírez, Joan Salvador; Aublin, J.; Bagatelas, Christos (springer-Verlag, 2023-04-28)
      Article
      Accés obert
      This article reports the first observation of the Moon and the Sun shadows in the sky distribution of cosmicray induced muons measured by the KM3NeT/ORCA detector. The analysed data-taking period spans from February 2020 ...

    • First study on the feasibility of stellar flares detection with GPS 

      Martínez Cid, David (Universitat Politècnica de Catalunya, 2016-09)
      Treball Final de Grau
      Accés obert
      The overionization generated by solar flares on the Earth ionosphere is a very active field of research. In this TFG it is intended to develop a first study the feasibility of the detection of stellar bursts by means of a ...

    • Generation of Synthetic Solar Images with GANs 

      Sierra Acosta, Jorge (Universitat Politècnica de Catalunya, 2020-01-31)
      Projecte Final de Màster Oficial
      Accés obert
      Realitzat a/amb:   Instituto de Astrofìsica de Canarias
      This works presents an alternative solution to the already existing physical simulations for the Sun's photosphere which are used to output a single tex- ture image from the Sun's surface. This simulations are slow and ...

    • Gravitational waves and new gravitational astronomy 

      Rey Toro, Susana (Universitat Politècnica de Catalunya, 2019-07-03)
      Treball Final de Grau
      Accés obert
      This project is aimed to provide the reader a guide to introduce oneself to the field of gravitational waves: it gives a global vision of the essential subjects concerning them to understand how gravitational were predicted, ...

    • gSeaGen: The KM3NeT GENIE-based code for neutrino telescopes 

      Aiello, S; Albert, Arnauld; Alves Garre, Sergio; Alyd, Z.; Ameli, F; André, Michel; Androulakis, Giorgos; Anghinolfi, Marco; Anguita, M.; Anton, Gisela (2020-11-01)
      Article
      Accés obert
      The gSeaGen code is a GENIE-based application developed to efficiently generate high statistics samples of events, induced by neutrino interactions, detectable in a neutrino telescope. The gSeaGen code is able to generate ...

    • High-energy reconstruction for single and double cascades using the KM3NeT detector 

      Ageron, M.; Aiello, S; Alshamsi, Mohammed; Ambrosone, Antonio; André, Michel; Androulakis, Giorgos; Anghinolfi, Marco; Anton, Gisela; Ardid Ramírez, Miguel; Aublin, J.; Bagatelas, Christos (arXiv, 2021)
      Text en actes de congrés
      Accés obert
      The discovery of a high-energy cosmic neutrino flux has paved the way for the field of neutrino astronomy. For a large part of the flux, the sources remain unidentified. The KM3NeT detector, which is under construction in ...

    • High-temperature combustion: Approaching equilibrium using nuclear networks 

      Cabezón Gómez, Rubén Martín; García Senz, Domingo; Bravo Guil, Eduardo (2004-04)
      Article
      Accés restringit per política de l'editorial

    • Hydrodynamic simulations of classical novae: accretion onto CO white dwarfs as SN Ia progenitors 

      Starrfield, Sumner; Bose, M; Iliadis, Christian; Hix, W. R.; Woodward, C; Wagner, R; José Pont, Jordi; Hernanz Carbó, Margarita (PoS - Proceedings of Science, 2018)
      Text en actes de congrés
      Accés obert

    • Implementation and first results of the KM3NeT real-time core-collapse supernova neutrino search 

      Aiello, S; Albert, A.; Alves Garre, Sergio; Ambrosone, Antonio; André, Michel; Ardid Ramírez, Miguel; Aublin, J.; Enzenhöfer, A.; Salesa, F.; Riccobene, Giorgio; Tingay, S. J. (springer-Verlag, 2022-04-01)
      Article
      Accés obert
      The KM3NeT research infrastructure is under construction in the Mediterranean Sea. KM3NeT will study atmospheric and astrophysical neutrinos with two multi-purpose neutrino detectors, ARCA and ORCA, primarily aimed at ...

    • Implementation of a network of nuclear reactions of moderate size aimed at simulating Type Ia supernova explosions 

      Sanz Lechuga, Axel (Universitat Politècnica de Catalunya, 2021-07-13)
      Treball Final de Grau
      Accés obert
      A key ingredient in any numerical study of supernova explosions is the nuclear network routine that is coupled with the hydrodynamic simulation code. When these studies are performed in more than one dimension, the size ...

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

      Ageron, M.; Aiello, S; Aublin, J.; Alshamsi, Mohammed; Alves Garre, Sergio; André, Michel; Anghinolfi, Marco; Anton, Gisela; Ardid Ramírez, Miguel; Albert, Arthur; Belhorma, Bouchra; Bendahman, Meriem; Bertin, Vincent; Bissinger, Matthias; Boumaaza, Jihad (arXiv, 2021)
      Text en actes de congrés
      Accés obert
      An anomalous flux of neutrinos produced in hypothetical annihilations or decays of dark matter inside a source would produce a signal observable with neutrino telescopes. As suggested by observations, a conspicuous amount ...