Enviaments recents

  • Nonsingular black holes, the cosmological constant and asymptotic safety 

    Torres Herrera, Ramon (2017-06-05)
    Article
    Accés obert
    Quantum gravitational effects in black hole spacetimes with a cosmological constant ¿ are considered. The effective quantum spacetimes for the black holes are constructed by taking into account the renormalization group ...
  • Non-singular quantum improved rotating black holes and their maximal extension 

    Torres Herrera, Ramon (2017-06-01)
    Article
    Accés restringit per política de l'editorial
    We add a prescription to the Newman–Janis algorithm in order to use it as a means of finding new extended rotating black hole spacetimes from static spherically symmetric ones. Then, we apply the procedure to a quantum ...
  • Formation mechanisms for self-organized kilometer-scale shoreline sand waves 

    Falqués Serra, Albert; Ribas Prats, Francesca; Idier, Déborah; Arriaga García, Jaime Alonso (2017-05-16)
    Article
    Accés obert
    The feedbacks between morphology and waves through sediment transport are investigated as a source of kilometer-scale shoreline sand waves. In particular, the observed sand waves along Srd. Holmslands Tange, Denmark, are ...
  • Cold outbreaks at the mesoscale in the Western Mediterranean basin: from Raincells to rainbands 

    Mazón Bueso, Jordi; Pino González, David (2017-05-17)
    Article
    Accés obert
    This paper investigates cold outbreaks that form offshore density currents within the whole mesoscale over the Western Mediterranean basin. Reflectivity radar and satellite images are used to detect clouds and precipitation ...
  • The influence of an increase of the Mediterranean Sea Surface Temperature on two nocturnal offshore rainbands: a numerical experiment 

    Mazón Bueso, Jordi; Pino González, David (2017-03-18)
    Article
    Accés obert
    Using the Weather Research and Forecasting (WRF) – Advanced Research WRF (ARW) mesoscale model (WRF–ARW), we investigate how two nocturnal offshore rainbands occurring in the Mediterranean basin are modified in a warmer ...
  • Emergence of spatio-temporal dynamics from exact coherent solutions in pipe flow 

    Ritter, Paul; Mellibovsky Elstein, Fernando; Avila Cañellas, Marc (2016-08-12)
    Article
    Accés obert
    Turbulent-laminar patterns are ubiquitous near transition in wall-bounded shear flows. Despite recent progress in describing their dynamics in analogy to non-equilibrium phase transitions, there is no theory explaining ...
  • On regular rotating black holes 

    Torres Herrera, Ramon; Fayos Vallés, Francisco (2017-01-01)
    Article
    Accés restringit per política de l'editorial
    Different proposals for regular rotating black hole spacetimes have appeared recently in the literature. However, a rigorous analysis and proof of the regularity of this kind of spacetimes is still lacking. In this note ...
  • Using archives of past floods to estimate future flood hazards 

    Swierczynski, Tina; Ionita, Monica; Pino González, David (2017-01-13)
    Article
    Accés obert
    Worldwide, floods cause greater economic damage and loss of human life than any other type of natural disaster. We urgently need better assessments of flood hazards to reduce the societal impact of extreme floods caused ...
  • Inertial waves in rapidly rotating flows: a dynamical systems perspective 

    López Moscat, Juan Manuel; Marqués Truyol, Francisco (2016-11-02)
    Article
    Accés restringit per política de l'editorial
    An overview of recent developments in a wide variety of enclosed rapidly rotating flows is presented. Highlighted is the interplay between inertial waves, which have been predicted from linear inviscid considerations, and ...
  • Flexible rod design for educational wind balance 

    Raush Alviach, Gustavo Adolfo; Castilla López, Roberto; Gámez Montero, Pedro Javier; Wojciechowski, Jakub; Codina Macià, Esteban (2016-03-07)
    Article
    Accés obert
    This article provides a technical description of a flexible hinge for wind tunnel rigs. For academic purposes, the device was integrated into several rod flexures to build a home-made external wind balance system. The ...

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