El Grup d' Astronomía i Astrofísica de la Universitat Politècnica de Catalunya (UPC) reuneix a un nombre reduit de persones interessades en una àmplia gama de temes de la Astronomía moderna. La història del grup va començar l'any 1995, just desprès de que alguns astrofísics perteneixents a dos departaments de física diferents (el departament de Física Aplicada, i el de Física i Enginyería Nuclear.) ajuntaran esforços per tal de crear un grup d'investigació competitiu en ciències de l'espai dins de la UPC. En la actualitat el GAA compta amb 7 investigadors permanents, a més de 6 estudiants doctorats i 11 estudiants postgraduats buscant aconseguir el seu doctorat. L'àrea principal d'actividad de la investigació del GAA pot ser classificada com Astrofísica Teórica. El tema és molt ampli, incloent-hi simulacions de computadora de les últimes etapes de la evolució estelar (l'enfriamient de les nanes blanques, AGBs, explosions de novas i supernovas, explosions de raigs X i física dels objectes compactes), estructura y dinàmica dels jets relacionats amb el PN i els objectes de l'Herbig-Haro i Cosmología. Alguns membres també estàn interessats en altres areas, incloent-hi estudis del comportament cinemàtic de estrelles en la vecindad Solar així com el diseny de la instrumentació que serà utilitzada per els satèlits científics.

Pàgina web del grup de recerca

Recent Submissions

  • Smoothed particle hydrodynamics simulations of the core-degenerate scenario for Type Ia supernovae 

    Aznar Siguan, Gabriela; García-Berro Montilla, Enrique; Loren Aguilar, Pablo; Soker, Noam; Kashi, Amit (2015-07-01)
    Article
    Open Access
    The core-degenerate scenario for Type Ia supernovae involves the merger of the hot core of an asymptotic giant branch star and a white dwarf, and might contribute a non-negligible fraction of all thermonuclear supernovae. ...
  • The response of a helium white dwarf to an exploding Type Ia supernova 

    Papish, Oded; Soker, Noam; García-Berro Montilla, Enrique; Aznar Siguan, Gabriela (2015-05-01)
    Article
    Open Access
    We conduct numerical simulations of the interacting ejecta from an exploding CO white dwarf (WD) with a He WD donor in the double-detonation scenario for Type Ia supernovae (SNe Ia), and study the possibility of exploding ...
  • Revisiting the luminosity function of single halo white dwarfs 

    Cojocaru, Elena Ruxandra; Torres Gil, Santiago; Althaus, Leandro G.; Isern Vilaboy, Jordi; García-Berro Montilla, Enrique (EDP SCIENCES S A, 2015-09-01)
    Article
    Open Access
    Context. White dwarfs are the fossils left by the evolution of low- and intermediate-mass stars, and have very long evolutionary timescales. This allows us to use them to explore the properties of old populations, like the ...
  • 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
    Open Access
    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 ...
  • The mass function of hydrogen-rich white dwarfs: robust observational evidence for a distinctive high-mass excess near 1 M-circle dot 

    Rebassa Mansergas, Alberto; Rybicka, M.; Liu, X.; Han, Z.; García-Berro Montilla, Enrique (2015-09-11)
    Article
    Open Access
    The mass function of hydrogen-rich atmosphere white dwarfs has been frequently found to reveal a distinctive high-mass excess near 1 M-circle dot. However, a significant excess of massive white dwarfs has not been detected ...
  • A remarkable recurrent nova in M31: Discovery and optical/UV observations of the predicted 2014 eruption 

    Darnley, M. J.; Henze, Martin; Steele, I. A.; Bode, M. F.; Ribeiro, V. A.; Rodríguez-Gil, Pablo; Shafter, A. W.; Williams, S. C.; Baer, D.; Hachisu, I.; Hernanz Carbó, Margarita; Hornoch, K.; Hounsell, R.; Kato, M.; Kiyota, S.; Kucakova, H.; Maehara, H.; Ness, Jan-Uwe; Piascik, A. S.; Sala Cladellas, Glòria; Skillen, I.; Smith, R. J.; Wolf, M. (2015-08-01)
    Article
    Open Access
    The Andromeda Galaxy recurrent nova M31N 2008-12a had been caught in eruption eight times. The inter-eruption period of M31N 2008-12a is similar to 1 yr, making it the most rapidly recurring system known, and a strong ...
  • Higher order multi-step iterative method for computing the numerical solution of systems of nonlinear equations: Application to nonlinear PDEs and ODEs 

    Ullah, Malik Zaka; Serra Capizzano, Stefano; Ahmad, Fayyaz; Alaidarous, Eman (2015-10-15)
    Article
    Restricted access - publisher's policy
    In the present study, we consider multi-step iterative method to solve systems of nonlinear equations. Since the Jacobian evaluation and its inversion are expensive, in order to achieve a better computational efficiency, ...
  • Interpolation of the magnetic field at the test masses in eLISA 

    Mateos, I.; Díaz Aguiló, Marc; Ramos Castro, Juan José; García-Berro Montilla, Enrique; Lobo, J.A. (2015-08-20)
    Article
    Restricted access - publisher's policy
    A feasible design for a magnetic diagnostics subsystem for eLISA will be based on that of its precursor mission, LISA Pathfinder. Previous experience indicates that magnetic field estimation at the positions of the test ...
  • 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 ...
  • Spiral instability can drive thermonuclear explosions in binary white dwarf mergers 

    kashyap, Rahul; Fisher, Robert T.; García-Berro Montilla, Enrique; Aznar Siguan, Gabriela; Ji, Suoqing; Loren Aguilar, Pablo (2015-02-10)
    Article
    Open Access
    Thermonuclear, or Type Ia supernovae (SNe Ia), originate from the explosion of carbon-oxygen white dwarfs, and serve as standardizable cosmological candles. However, despite their importance, the nature of the progenitor ...

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