Browsing by Author "García-Berro Montilla, Enrique"Més informació

Now showing items 1-20 of 115

    • 3D Hydrodynamical simulations of helium-ignited double-degenerate white dwarf mergers 

      Roy, Niranjan C.; Tiwari, Vishal; Bobrick, Alexey; Kosakowski, Daniel; Fisher, Robert; Perets, Hagai B.; Kashyap, Rahul; Lorén Aguilar, Pablo; García-Berro Montilla, Enrique (2022-06-01)
      Article
      Open Access
      The origins of Type Ia supernovae (SNe Ia) are still debated. Some of the leading scenarios involve a double detonation in double white dwarf (WD) systems. In these scenarios, helium shell detonation occurs on top of a ...

    • A common origin of magnetism from planets to white dwarfs 

      Isern Vilaboy, Jordi; García-Berro Montilla, Enrique; Kulebi, Baybar; Lorén Aguilar, Pablo (2017-02-20)
      Article
      Open Access
      Isolated magnetic white dwarfs have field strengths ranging from kilogauss to gigagauss. However, the origin of the magnetic field has not been hitherto elucidated. Whether these fields are fossil, hence the remnants of ...

    • A population synthesis study of the luminosity function of hot white dwarfs 

      Torres Gil, Santiago; García-Berro Montilla, Enrique; Krzesinski, Jurek; Kleinman, Scot J. (2014-03-05)
      Article
      Open Access
      Context. We present a coherent and detailed Monte Carlo simulation of the population of hot white dwarfs. We assess the statistical significance of the hot end of the white dwarf luminosity function and the role played by ...

    • A population synthesis study of the MS+WD population in the SDSS 

      García-Berro Montilla, Enrique; Torres Gil, Santiago; Camacho Díaz, Judit; Rebassa Mansergas, Alberto; Gänsicke, Boris T.; Schreiber, Mathias R.; Zorotovic, Mónica (2014)
      Conference lecture
      Restricted access - publisher's policy

    • A population synthesis study of the MS+WD population in the SDSS 

      García-Berro Montilla, Enrique; Torres Gil, Santiago; Camacho Díaz, Judit; Rebassa Mansergas, Alberto; Gänsicke, Boris T.; Schreiber, Mathias R.; Zorotovic, Mónica (Astronomical Society of the Pacific Conference Series (ASP), 2015-06-01)
      Article
      Open Access
      Detached white dwarf + main sequence (WD+MS) systems represent the simplest population of post-common envelope binaries (PCEBs), and their ensemble properties carry important information about common-envelope phase. However, ...

    • A population synthesis study of white dwarf-main sequence binaries in the galactic disk 

      Rebassa Mansergas, Alberto; García-Berro Montilla, Enrique; Torres Gil, Santiago (2017)
      Conference report
      Open Access
      The companion mass ratio distribution (CMRD) of main sequence binaries is a crucial physical quantity for understanding the evolution of stars in binary systems and for constraining models of binary star formation. However, ...

    • A white dwarf merger as progenitor of the anomalous X-Ray pulsar 4U 0142+61? 

      Rueda, Jorge A.; Boshkayev, K.; Izzo, L.; Ruffini, R.; Lorén Aguilar, Pablo; Kuelebi, B.; Aznar Siguan, Gabriela; García-Berro Montilla, Enrique (2013-08)
      Article
      Open Access
      It has been recently proposed that massive, fast-rotating, highly magnetized white dwarfs could describe the observational properties of some of soft gamma-ray repeaters and anomalous X-ray pulsars (AXPs). Moreover, it has ...

    • Acte d'investidura del Prof. Kip S. Thorne com a doctor honoris causa de la UPC Barcelona Tech 

      Thorne, Kip S.; García-Berro Montilla, Enrique (2017-05-25)
      Other
      Open Access
      El document conté: Ordre de l'acte d'investidura. Elogi dels mèrits del Prof. Kip S. Thorne elaborat pel professor i investigador Enrique García-Berro. Discurs pronunciat pel nou doctor honoris causa.

    • Algorithm specification for the Magnetic Diagnostics onboard LPF 

      Díaz Aguiló, Marc; García-Berro Montilla, Enrique; Lobo Gutiérrez, José Alberto (2010-01-02)
      Research report
      Open Access
      Document tècnic per la missió espacial LISA Pathfinder. Missió espacial de l'Agència Espacial Europea (ESA).

    • An asteroseismic constraint on the mass of the axion from the period drift of the pulsating da white dwarf star L19-2 

      Córsico, Alejandro H.; Romero, Alejandra Daniela; Althaus, Leandro G.; García-Berro Montilla, Enrique; Isern Vilaboy, Jordi; Kepler, S.O.; Miller Bartolami, Marcelo M.; Sullivan, Denis J. (2016-07-01)
      Article
      Open Access
      We employ an asteroseismic model of L19-2, a relatively massive (Msstarf ~ 0.75 M¿) and hot (Teff ~ 12 100 K) pulsating DA (H-rich atmosphere) white dwarf star (DAV or ZZ Ceti variable), and use the observed values of the ...

    • Axions and the luminosity function of white dwarfs : the thin and thick discs, and the halo 

      Isern Vilaboy, Jordi; García-Berro Montilla, Enrique; Torres Gil, Santiago; Cojocaru, Elena Ruxandra; Catalán, S (Oxford University Press, 2018-08-01)
      Article
      Open Access
      The evolution of white dwarfs is a simple gravothermal process of cooling. Since the shape of their luminosity function is sensitive to the characteristic cooling time, it is possible to use its slope to test the existence ...

    • Bounds on the possible evolution of the gravitational constant from cosmological type-Ia supernovae 

      Gaztañaga, E.; García-Berro Montilla, Enrique; Isern Vilaboy, Jordi; Bravo Guil, Eduardo; Domínguez, Inmaculada (2002-01)
      Article
      Open Access
      Recent high-redshift type-Ia supernovae results can be used to set new bounds on a possible variation of the gravitational constant G. If the local value of G at the space-time location of distant supernovae is different, ...

    • Classical and recurrent nova models 

      José Pont, Jordi; Casanova Bustamante, Jordi; García-Berro Montilla, Enrique; Hernanz Carbó, Margarita; Shore, Steven N.; Calder, A. (2011)
      Conference lecture
      Open Access
      Remarkable progress in the understanding of nova outbursts has been achieved through combined efforts in photometry, spectroscopy and numerical simulations. According to the thermonuclear runaway model, novae are powered ...

    • Comparison of theoretical white dwarf cooling timescales (Research Note) 

      Salaris, Maurizio; Althaus, Leandro Gabriel; García-Berro Montilla, Enrique (2013-07)
      Article
      Open Access
      Context. An accurate assessment of white dwarf cooling times is paramount so that white dwarf cosmochronology of Galactic populations can be put on more solid grounds. This issue is particularly relevant in view of the ...

    • Constraining the double-degenerate scenario for Type Ia supernovae from merger ejected matter 

      Levanon, Naveh; Soker, Noam; García-Berro Montilla, Enrique (2015-03-01)
      Article
      Open Access
      We follow the mass expelled during the WD-WD merger process in a particular case of the double-degenerate (DD) scenario for Type Ia supernovae (SNe Ia), and find that the interaction of the SN ejecta with the resulting ...

    • Constraining the neutrino magnetic dipole moment from white dwarf pulsations 

      Corsico, Alejandro H.; Althaus, Leandro G.; Miller Bartolami, Marcelo M.; Kepler, S.O.; García-Berro Montilla, Enrique (2014-08-01)
      Article
      Open Access
      Pulsating white dwarf stars can be used as astrophysical laboratories to constrain the properties of weakly interacting particles. Comparing the cooling rates of these stars with the expected values from theoretical models ...

    • DA white dwarfs from the LSS-GAC survey DR1: the preliminary luminosity and mass functions and formation rate 

      Rebassa Mansergas, Alberto; Cojocaru, Elena Ruxandra; Torres, S.; García-Berro Montilla, Enrique; Liu, X.; Yuan, H-B.; Xiang, M.-X.; Huang, Y.; Koester, D.; Hou, Y.; Li, G.; Zhang, Y. (2015-06-11)
      Article
      Open Access
      Modern large-scale surveys have allowed the identification of large numbers of white dwarfs. However, these surveys are subject to complicated target selection algorithms, which make it almost impossible to quantify to ...

    • Design of the magnetic diagnostics unit onboard LISA Pathfinder 

      Díaz Aguiló, Marc; Mateos, Ignacio; Ramos Castro, Juan José; Lobo, J.A.; García-Berro Montilla, Enrique (2013-04)
      Article
      Open Access
      LISA (Laser Interferometer Space Antenna) is a joint mission of ESA and NASA which aims to be the first space-borne gravitational wave observatory. Due to the high complexity and technological challenges that LISA will ...

    • Detonations in white dwarf dynamical interactions 

      Aznar Siguan, Gabriela; García-Berro Montilla, Enrique; Lorén Aguilar, Pablo; José Pont, Jordi; Isern Vilaboy, Jordi (2013)
      Article
      Open Access
      n old, dense stellar systems collisions of white dwarfs are a rather frequent phenomenon. Here we present the results of a comprehensive set of Smoothed Particle Hydrodynamics simulations of close encounters of white ...

    • Docencia e investigación: ¿un falso dilema? 

      García-Berro Montilla, Enrique; Amblàs, Gemma; Sallarés, Jordi; Bugeda Castelltort, Gabriel; Roca, Santiago (2013-05-01)
      Article
      Open Access