Now showing items 1-17 of 17

    • 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 ...
    • 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 ...
    • Breaking the habit: the peculiar 2016 eruption of the unique recurrent nova M31N 2008-12a 

      Henze, Martin; Darnley, Matt J.; Williams, Steven Charles; Sala Cladellas, Glòria; José Pont, Jordi (2018-04-10)
      Article
      Open Access
    • Curs 0: preparació per als estudis a l’EEBE 

      Tornil Sin, Sebastián; Botey Cumella, Muriel; Alarcón Jordán, Marta; Alcaraz Sendra, Olga; Ametller Congost, Lluís; Bruna Escuer, Pere; Camps Anaya, Germinal; Carmona Mejías, Ángeles; Claverol Aguas, Mercè; Crespo Artiaga, Daniel; Pablo Ribas, Joan de; Barrio Casado, María del; Valle Mendoza, Luis Javier del; Encinas Bachiller, Andrés Marcos; Farran Marsà, Adriana; Florido Pérez, Antonio; Gámez López, Antonio; García Senz, Domingo; Gibert Agulló, Oriol; Ikhouane, Fayçal; Jiménez Jiménez, María José; José Pont, Jordi; Linares Alegret, Manuel; Lloveras Muntané, Pol Marcel; López López, José; Macovez, Roberto; Mas Blesa, Albert; Mitjana Riera, Margarida; Muñoz Romero, José; Pardo Soto, Luis Carlos; Periago Oliver, M. Cristina; Pineda Soler, Eloi; Pradell Cara, Trinitat; Ruiz Ordóñez, Magda; Sala Cladellas, Glòria; Soler Turu, Lluís; Tamarit Mur, José Luis; Vendrell Villafruela, Xavier; Zanuy Gomara, David (Universitat Politècnica de Catalunya. Institut de Ciències de l'Educació, 2022-05)
      Article
      Open Access
      Aquest article presenta el desenvolupament i primers resultats d'ús d'un conjunt de cursos virtuals que pretenen proporcionar uns coneixements inicials bàsics de Matemàtiques, Física i !ímica als estudiants que accedeixen ...
    • Enquesta sobre la situació del col·lectiu del professorat associat a la Universitat Politècnica de Catalunya 

      Cornadó Bardón, Còssima; Haurie Ibarra, Laia; Mir Teixidor, Enrique; Morros Rubió, Josep Ramon; Mujica Delgado, Luis Eduardo; Olmedo Torre, Noelia; Peña Carrera, Marta; Sala Cladellas, Glòria (2021-03-15)
      Research report
      Open Access
      La utilització de la figura del professorat associat per part de les universitats públiques a Catalunya en molts casos està lluny de l’esperit d’aquesta figura en la legislació (especialista de reconeguda competència i amb ...
    • Gamma-ray observations of MAXI J1820+070 during the 2018 outburst 

      Collaboration, MAGIC; Collaboration, VERITAS; Bosch Ramon, Valentí; Celma Querol, Carlos; Linares Alegret, Manuel; Russell, David; Sala Cladellas, Glòria (Oxford University Press, 2022-11-04)
      Article
      Open Access
      MAXI J1820+070 is a low-mass X-ray binary with a black hole (BH) as a compact object. This binary underwent an exceptionally bright X-ray outburst from 2018 March to October, showing evidence of a non-thermal particle ...
    • M31N 2008-12a - The remarkable recurrent Nova in M31: Panchromatic observations of the 2015 eruption 

      Darnley, M. J.; Henze, Martin; Bode, M. F.; Hachisu, I.; Hernanz Carbó, Margarita; Hornoch, Kamil; Hounsell, R.; Kato, M.; Ness, Jan-Uwe; Osborne, Julian; Page, Kim; Ribeiro, V. A.; Rodríguez-Gil, Pablo; Shafter, A. W.; Shara, M.; Steele, I. A.; Williams, S. C.; Figueira, Joana; José Pont, Jordi; Sala Cladellas, Glòria (2016-12-20)
      Article
      Open Access
    • M81 Extragalactic nova explosions 

      Real Fraxedas, Fèlix; Jumilla Lorenz, Jordi; Sala Cladellas, Glòria (Universitat Politècnica de Catalunya, 2021-06-04)
      Coursework
      Open Access
      Using data from the Joan Oró telescope (located in Montsec, Catalonia) and the reference catalogue from Max Planck Institute, we will observe the evolution of different novae in the M81 galaxy. This article explains the ...
    • Mass-loss and composition of wind ejecta in type I X-ray bursts 

      Herrera, Yago; Sala Cladellas, Glòria; José Pont, Jordi (EDP Sciences, 2023-10-17)
      Article
      Open Access
      Context. X-Ray bursts (XRBs) are powerful thermonuclear events on the surface of accreting neutron stars (NSs) where nucleosynthesis of intermediate-mass elements occurs. The high surface gravity of an NS prevents the ...
    • Nova LMC 2009a as observed with XMM–Newton, compared with other novae 

      Oriol Ibarz, Marina; Dobrotka, Andrej; Ospina, Nathalie; Ippei, Shake; Sala Cladellas, Glòria (Oxford University Press, 2021-05-21)
      Article
      Open Access
      <jats:title>ABSTRACT</jats:title> <jats:p>We examine four high-resolution reflection grating spectrometers (RGS) spectra of the February 2009 outburst of the luminous recurrent nova LMC 2009a. They were ...
    • Observatory science with eXTP 

      Zand, Jean J. M. in ’t; Bozzo, Enrico; Qu, JinLu; Sala Cladellas, Glòria; José Pont, Jordi; Linares Alegret, Manuel (2019-02-01)
      Article
      Open Access
      In this White Paper we present the potential of the enhanced X-ray Timing and Polarimetry (eXTP) mission for studies related to Observatory Science targets. These include flaring stars, supernova remnants, accreting white ...
    • Simulations of stellar winds from X-ray bursts: Characterization of solutions and observable variables. 

      Herrera, Yago; Sala Cladellas, Glòria; José Pont, Jordi (EDP Sciences, 2020-06-19)
      Article
      Open Access
      Context. Photospheric radius expansion during X-ray bursts can be used to measure neutron star radii and help constrain the equation of state of neutron star matter. Understanding the stellar wind dynamics is important for ...
    • The large observatory for x-ray timing 

      Feroci, Marco; den Herder, J.W.; Bozzo, Enrico; Barret, Didier; Brandt, S.; Hernanz Carbó, Margarita; van der Klis, M; Pohl, M; Santangelo, A; Stella, Luigi; Watts, ana; Willms, Jörn; Sala Cladellas, Glòria (2015)
      Conference report
      Open Access
    • The orbital period of the recurrent nova V2487 Oph revealed 

      Rodríguez Gil, Pablo; Corral Santana, Jesus M.; Elias Rosa, Nancy; Gänsicke, Boris T.; Hernanz, Margarita; Sala Cladellas, Glòria (Oxford University Press, 2023-10-12)
      Article
      Open Access
      We present the first reliable determination of the orbital period of the recurrent nova V2487 Oph (Nova Oph 1998). We derived a value of 0.753 ± 0.016 d (18.1 ± 0.4 h) from the radial velocity curve of the intense He¿II ...
    • The supersoft X-ray source in V5116 Sagittarii: I. the high resolution spectra 

      Sala Cladellas, Glòria; Ness, Jan-Uwe; Hernanz Carbó, Margarita; Greiner, Jochen (EDP Sciences, 2017-05-22)
      Article
      Open Access
      Context. Classical nova explosions occur on the surface of an accreting white dwarf in a binary system. After ejection of a fraction of the envelope and when the expanding shell becomes optically thin to X-rays, a bright ...
    • What we learn from the X-Ray grating spectra of Nova SMC 2016 

      Orio, Marina; Ness, Jan-Uwe; Dobrotka, Andrej; Sala Cladellas, Glòria (Institute of Physics (IOP), 2018-08-01)
      Article
      Open Access
    • X-ray detection of a nova in the fireball phase 

      König, Ole; Wilms, Jörn; Arcodia, Riccardo; Haberl, Frank; Kreykenbohm, Ingo; Rau, Arne; Sala Cladellas, Glòria; Werner, Klaus (Springer Nature, 2022-05-11)
      Article
      Open Access
      Novae are caused by runaway thermonuclear burning in the hydrogen-rich envelopes of accreting white dwarfs, which leads to a rapid expansion of the envelope and the ejection of most of its mass1,2. Theory has predicted the ...