Ara es mostren els items 1-20 de 224

    • 7Be(n,alpha) and 7Be(n,p) cross-section measurement for the cosmological lithium problem at the n TOF facility at CERN 

      Barbagallo, Massimo; Colonna, Nicola; Aberle, O.; Calviño Tavares, Francisco; Casanovas Hoste, Adrià; Cortés Rossell, Guillem Pere; Tarifeño Saldivia, Ariel Esteban (EDP Sciences, 2016)
      Comunicació de congrés
      Accés obert
      The Cosmological Lithium Problem refers to the large discrepancy between the abundance of primordial 7Li predicted by the standard theory of Big Bang Nucleosynthesis and the value inferred from the so-called “Spite plateau” ...
    • A close look into the variable stars surrounding the first X-ray Transient 

      Gómez Fernández, Laura (Universitat Politècnica de Catalunya, 2023-07-05)
      Treball Final de Grau
      Accés obert
      With the purpose of unveiling the optical counterpart of the first Black Hole Transient (BHT) ever detected, a 12 sq. degree area of the sky was surveyed with the 570-megapixel DECam camera around the estimated position ...
    • A GEANT4 Simulation-based study of CIRBE mission 

      Megías Homar, Guillem (Universitat Politècnica de Catalunya, 2019-07-10)
      Treball Final de Grau
      Accés restringit per decisió de l'autor
    • A model-based systems engineering approach to space mission education of a geographically disperse student workforce 

      Halvorson, Michael; Fuchs, Jared; Kung, Patrick; Thomas, Dale (Universitat Politècnica de Catalunya, 2022-04-29)
      Comunicació de congrés
      Accés obert
      The Alabama Burst Energetics eXplorer (ABEX) is a 12U CubeSat commissioned by the Alabama Space Grant Consortium; its astrophysics mission is to study the low energy, prompt emission of Gamma-ray Bursts in both gamma and ...
    • A polarized fast radio burst at low Galactic latitude 

      Rowlinson, A.; O'Sullivan, Michael; Anghinolfi, Marco; Anton, G.; Avgitas, T.; Bertin, V.; Puricelli, Stefano; Coniglione, R.; Gleixner, A; Lefèvre, Dominique; Michael, Turner; Pellegrino, Carlo; Piattelli, P.; Sanchez Losa, Agustín; Schnabel, J.; Trovato, A.; Zúñiga Román, Juan; Elejabarrieta, María Jesús; Schrenk, Bernhard; Hahn, James K.; Lamanna, G.; Moulin, Eric; Moya Señas, Ignacio; Santangelo, A; Schulz, André; Vink, J; Wagner, Peter; Yang, Rong; Zaborov, D.; André, Michel (2017-08-01)
      Article
      Accés obert
      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, a ...
    • A remarkable recurrent nova in M 31: The predicted 2014 outburst in X-rays with Swift 

      Henze, Martin; Ness, J.; Darnley, M. J.; Bode, M. F.; Williams, S. C.; Shafter, A. W.; Sala Cladellas, Glòria; Kato, M.; Hachisu, I.; Hernanz Carbó, Margarita (2015-08-01)
      Article
      Accés obert
      Context. The M 31 nova M31N 2008-12a was recently found to be a recurrent nova (RN) with a recurrence time of about one year. This is by far the fastest recurrence time scale of any known RN.; Aims. Our optical monitoring ...
    • A search for neutrino emission from the Fermi bubbles with the ANTARES telescope 

      Adrian Martinez, Silvia; Albert, A.; Al Samarai, Imen; André, Michel; Anton, G.; Anvar, S.; Ardid, M.; Astraatmadja, T.; Baret, B.; Basa, S.; Bertin, V.; Biagi, S.; Bogazzi, C.; Bouhou, B.; Brunner, J.; Morganti, M.; Schmidt, J.; Stolarczyk, Th. (2014-02-06)
      Article
      Accés obert
      Analysis of the Fermi-LAT data has revealed two extended structures above and below the Galactic Centre emitting gamma rays with a hard spectrum, the so-called Fermi bubbles. Hadronic models attempting to explain the origin ...
    • A search for secluded dark matter in the sun with the ANTARES neutrino telescope 

      Adrian Martinez, Silvia; Albert, A.; André, Michel (2016-05-05)
      Article
      Accés obert
      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 ...
    • A shared accretion instability for black holes and neutron stars 

      Vincentelli, Federico; Neilsen, Joey; Tetarenko, Alexandra; Cavecchi, Yuri; Castro Segura, Noel; del Palacio, Santiago; van den Eijnden, Jakob; Vasilopoulos, Georgios; Altamirano, Diego; Armas Padilla, Montserrat; Bailyn, Charles; Belloni, Tomaso M.; Cúneo, Virginia; Degenaar, Nathalie (Macmillan Publishers, 2023-03-01)
      Article
      Accés obert
      Accretion disks around compact objects are expected to enter an unstable phase at high luminosity1. One instability may occur when the radiation pressure generated by accretion modifies the disk viscosity, resulting in the ...
    • A Trojan horse approach to the production of 18F in Novae 

      la Cognata, M; Pizzone, R; José Pont, Jordi; Hernanz Carbó, Margarita; Cherubini, S; Gulino, M; Rapisarda, G; Spitaleri, C (2017-09-01)
      Article
      Accés obert
      Crucial information on nova nucleosynthesis can be potentially inferred from ¿-ray signals powered by 18F decay. Therefore, the reaction network producing and destroying this radioactive isotope has been extensively studied ...
    • Advances and new ideas for neutron-capture astrophysics experiments at CERN n_TOF 

      Domingo Pardo, César; Babiano Suárez, Víctor; Balibrea Correa, Javier; Lerendegui Marco, Jorge; Taín Enríquez, José Luis; Tarifeño Saldivia, Ariel; Aberle, O.; Alcayne Aicua, Víctor; Amaducci, Simone; Andrzejewski, Józef; Calviño Tavares, Francisco; Calviani, Marco; Casanovas Hoste, Adrià; Cortés Rossell, Guillem Pere; Cosentino, Luigi; Dressler, Rugard (Springer Nature, 2023-01-01)
      Article
      Accés obert
      This article presents a few selected developments and future ideas related to the measurement of (n,¿) data of astrophysical interest at CERN n_TOF. The MC-aided analysis methodology for the use of low-efficiency radiation ...
    • All-flavor search for a diffuse flux of cosmic neutrinos with nine years of ANTARES data 

      Albert, A.; André, Michel; Anghinolfi, Marco; Anton, G.; Ardid Ramírez, Miguel (2018-01-20)
      Article
      Accés obert
      The ANTARES detector is at present the most sensitive neutrino telescope in the northern hemisphere. The highly significant cosmic neutrino excess observed by the Antarctic IceCube detector can be studied with ANTARES, ...
    • All-sky search for high-energy neutrinos from gravitational wave event GW170104 with the Antares neutrino telescope: The ANTARES Collaboration 

      Albert, A.; André, Michel; Anghinolfi, Marco; Anton, G.; Ardid Ramírez, Miguel (2017-12-28)
      Article
      Accés obert
      © 2017, The Author(s). 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. An all-sky ...
    • An algorithm for the reconstruction of high-energy neutrino-induced particle showers and its application to the ANTARES neutrino telescope 

      Albert, A.; 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 (2017-06-21)
      Article
      Accés obert
      A novel algorithm to reconstruct neutrino-induced particle showers within the ANTARES neutrino telescope is presented. The method achieves a median angular resolution of 6°6° for shower energies below 100 TeV. Applying ...
    • An algorithm for the reconstruction of neutrino-induced showers in the ANTARES Neutrino telescope 

      Albert, A.; André, Michel (2017-12-04)
      Article
      Accés obert
      Muons created by nm charged current (CC) interactions in the water surrounding the ANTARES neutrino telescope have been almost exclusively used so far in searches for cosmic neutrino sources. Due to their long range, highly ...
    • Analysis of Interplanetary Coronal Mass Ejections Observed by STEREO and MESSENGER 

      González Álvarez, Marina (Universitat Politècnica de Catalunya, 2019-05-27)
      Treball Final de Grau
      Accés obert
      Realitzat a/amb:   Goddard Space Flight Center
      Coronal mass ejections (CMEs) expelled from the solar corona are a major space weather driver, both in space and on the ground. The fast-traveling CME plasma, which carries a twisted magnetic field, is a common source of ...
    • Analysis of Medium-Earth Orbit Radiation Effects in Digital Systems for Spacecraft 

      Gorchs Picas, Marti (Universitat Politècnica de Catalunya, 2022-05-25)
      Treball Final de Grau
      Accés obert
      Realitzat a/amb:   Université Grenoble Alpes
      Field-programmable gate array (FPGA) are very appealing for space-based applications thanks to their great flexibility, allowing reconfiguration during spaceflight. However, they are sensitive to space radiation, especially ...
    • ANTARES and IceCube combined search for neutrino point-like and extended sources in the southern sky 

      André, Michel; Albert, A.; Anghinolfi, Marco; Anton, Gisela; Ardid Ramírez, Miguel; Aubert, J.-J.; Aublin, J.; Baret, B.; Basa, S.; Bertin, Vincent (Institute of Physics (IOP), 2020-04-01)
      Article
      Accés obert
      A search for point-like and extended sources of cosmic neutrinos using data collected by the ANTARES and IceCube neutrino telescopes is presented. The data set consists of all the track-like and shower-like events pointing ...
    • ANTARES constrains a blazar origin of two IceCube PeV neutrino events 

      Adrian Martinez, Silvia; Albert, Andreas; André, Michel (2015-04-01)
      Article
      Accés obert
      Context. The source(s) of the neutrino excess reported by the IceCube Collaboration is unknown. The TANAMI Collaboration recently reported on the multiwavelength emission of six bright, variable blazars which are positionally ...