Now showing items 41-60 of 115

  • Limits on dark matter annihilation in the sun using the ANTARES neutrino telescope 

    Adrian Martinez, Silvia; Albert, A.; André, Michel (Elsevier, 2016-08-10)
    Article
    Open Access
    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 ...
  • Local behaviour of evaporating stars and black holes around the total evaporation event 

    Fayos Vallés, Francisco; Torres Herrera, Ramon (2010-06-21)
    Article
    Open Access
  • Long-term monitoring of the ANTARES optical module efficiencies using 40K decays in sea water 

    Albert, A.; André, Michel; Anghinolfi, Marco (Springer, 2018-08-01)
    Article
    Open Access
    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 ...
  • Maneuvering spacecraft formations using a dynamically maneuvering spacecraft formations using a dynamically adapted finite element methodology 

    Masdemont Soler, Josep; García Taberner, Laura (2009)
    Article
    Restricted access - publisher's policy
    The formation reconfiguration or the deployment of multiple spacecraft is a key issue that demands a robust methodology safely avoiding collision hazards. In this paper we present a systematic procedure to perform proximity ...
  • Mass and eccentricity constraints on the planetary debris orbiting the white dwarf WD 1145+017 

    Gurri Pérez, Pol (Universitat Politècnica de Catalunya, 2016-06-29)
    Bachelor thesis
    Open Access
    Covenantee:  University of Warwick
    Being the first of its kind, the white dwarf WD 1145+017 exhibits a complex system of disintegrating debris which offers a unique opportunity to study its disruption process in real time. Even with plenty of transit ...
  • Measurement of key resonance states for the 40P(p,g)31S reaction rate, and the production of intermediate-mass elements in nova explosions 

    Kankainen, A; Woods, P.J.; Schatz, H.; Poxon-Pearson, T; Doherty, D.T.; Bader, V.; Baugher, T.; Bazin, D.; Brown, B.A.; Browne, J.; Estrade, A.; Gade, A.; José Pont, Jordi; Kontos, A.; Langer, C.; Lotay, G.; Meisel, Z.; Montes, F.; Noji, S.; Nunes, F.; Perdikakis, G.; Pereira, J.; Recchia, F.; Redpath, T.; Stroberg, R.; Scott, M.; Seweryniak, D.; Stevens, J.; Weisshaar, D.; Wimmer, K.; Zegers, R. (Elsevier, 2017-05-17)
    Article
    Open Access
    We report the first experimental constraints on spectroscopic factors and strengths of key resonances in the 30P(p, γ)31Sreaction critical for determining the production of intermediate-mass elements up to Ca in nova ejecta. ...
  • Measurement of very low (alpha,n) cross sections of astrophysical interest 

    Taín, J.L.; Jordán, D.; Agramunt Ros, Jorge; Caballero-Folch, R.; Calviño Tavares, Francisco; Cortés Rossell, Guillem Pere; Longland, Richard; Parikh, Anuj Ramesh (Institute of Physics (IOP), 2013)
    Conference report
    Open Access
    The reactions C-13(alpha,n)O-16 and Ne-22(alpha,n)Mg-25 are the primary sources of neutrons for the astrophysical s-process. The feasibility of cross section measurements within the respective Gamow windows is discussed ...
  • Measurement of very low (alpha,n) cross sections of astrophysical interest 

    Taín, J.L.; Jordán, D.; Agramunt Ros, Jorge; Caballero-Folch, R.; Calviño Tavares, Francisco; Cortés Rossell, Guillem Pere (Institute of Physics (IOP), 2013)
    Conference report
    Open Access
    The reactions 13C(alpha, n)16O and 22Ne(alpha, n)25Mg are the primary sources of neutrons for the astrophysical s-process. The feasibility of cross section measurements within the respective Gamow windows is discussed in ...
  • Measurement of very low (alpha,n) cross sections of astrophysical interest 

    Taín, J.L.; Jordan Herrero, Donato; Agramunt Ros, Jorge; Algora, A.; Bandac, I; Bettini, S; Caballero Folch, Roger; Calviño Tavares, Francisco; Cano-Ott, D; Cortés Rossell, Guillem Pere; Domingo-Pardo, C; Fraile, L. M.; Garcia, A.R.; Gomez-Cadenas, J.J.; José Pont, Jordi; Longland, Richard; Mendoza, E (Institute of Physics (IOP), 2016)
    Article
    Open Access
    The reactions 13C( ; n)16O and 22Ne( ; n)25Mg are the primary sources of neutrons for the astrophysical s-process. The feasibility of cross section measurements within the respective Gamow windows is discussed in quantitative ...
  • Measuring the galactic cosmic ray flux with the LISA Pathfinder radiation monitor 

    Armano, M.; Audley, H.; Baird, J.; Ramos Castro, Juan José (2018-01-31)
    Article
    Restricted access - publisher's policy
    Test mass charging caused by cosmic rays will be a significant source of acceleration noise for space-based gravitational wave detectors like LISA. Operating between December 2015 and July 2017, the technology demonstration ...
  • Modeling of thermal environment for an astrophysical satellite 

    Bedmar Castillo, Francisco G. (Universitat Politècnica de Catalunya, 2010-06-01)
    Master thesis
    Restricted access - author's decision
    The aim of this thesis is to design a thermal analysis workflow for design of nano and micro satellites at the Space Center EPFL. Currently orbiting Swiss Cube nano satellite and a future extrasolar planet observation ...
  • Modelling of the optical light-curve of the accreting binary V5116 Sgr 

    Moreno Garcia, Daniel (Universitat Politècnica de Catalunya, 2017-06-22)
    Bachelor thesis
    Open Access
    Covenantee:  Max-Planck-Institut für extraterrestrische Physik
    Context. Cataclysmic Variables are binary stars in which a relatively normal star is transferring mass to its compact companion. This interaction gives rise to a broad range of behaviours, the most energetic phenomenon ...
  • Modelos cosmológicos en el marco de la teoría general de la relatividad 

    Ribera Manzano, Pablo (Universitat Politècnica de Catalunya, 2016-06-29)
    Bachelor thesis
    Open Access
    Detailed work about relativistic cosmology: exposition of the principles and postulates, description of the geometry of spacetime and its matter contents, Hubble's law from a relativistic point of view, analysis of the ...
  • Models of classical novae with MESA 

    Abril Pla, Oriol (Universitat Politècnica de Catalunya, 2017-06)
    Bachelor thesis
    Open Access
    Classical novae are thermonuclear runaways at the envelope of a WD due to the piling up of H-rich accreted material. They have been observed to produce heavy elements during the explosion, and their role in galactical ...
  • Multi-messenger observations of a binary neutron star merger 

    Abbot, B. P.; Abbot, T. D.; Acernese, F.; André, Michel (2017-01-01)
    Article
    Open Access
    © 2017. The American Astronomical Society. All rights reserved. On 2017 August 17 a binary neutron star coalescence candidate (later designated GW170817) with merger time 12:41:04 UTC was observed through gravitational ...
  • New constraints on all flavor Galactic diffuse neutrino emission with the ANTARES 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 (2017-09-11)
    Article
    Open Access
    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 ...
  • Non-extensive statistics to the cosmological lithium problem 

    Hou, S.Q.; He, J.J.; Parikh, Anuj Ramesh (2017-01-11)
    Article
    Open Access
    Big Bang nucleosynthesis (BBN) theory predicts the abundances of the light elements D, 3He, 4He, and 7Li produced in the early universe. The primordial abundances of D and 4He inferred from observational data are in good ...
  • Nuclear astrophysics at n-TOF facility, CERN 

    Tagliente, G.; Abbondanno, U.; Aerts, G.; Álvarez, H.; Álvarez Velarde, F.; Andriamonje, S.; Andrzejewski, Józef; Audouin, Ludmila; Badurek, G.; Baumann, G.; Calviño Tavares, Francisco; Cortes, G.; Poch, Agustí; Pretel, C.; Quesada, J. (2015)
    Conference report
    Restricted access - publisher's policy
    The innovative feature of the n-TOF facility at CERN, in the two experimental areas, (20 m and 200 m flight paths), allow for an accurate determination of the neutron capture cross section for radioactive samples or for ...
  • Nuevos retos para la cosmología observacional 

    Gaztañaga, Enrique (2005-05-25)
    Audiovisual
    Open Access
    "Como muestra, presentaré uno de los más ambiciosos proyectos observacionales que se están preparando para los próximos años: El Cartografiado de la «energía oscura» (The Dark Energy Survey). La preparación y objetivos de ...
  • Numerical examination of the state of deformation in large terrestrial objects 

    Masllorens Torrens, Marc (Universitat Politècnica de Catalunya / Technische Universität Berlin, 2014)
    Bachelor thesis
    Open Access
    The reader could find in this paper an introduction to a numerical examination of the state of deformation of large bodies such as planets. This numerical study is done under the continuum mechanics theory and solved ...