Now showing items 28-47 of 72

    High energy processes in young stellar objects and high-mass X-ray binaries 

    Munar i Adrover, Pere (Date of defense: 2014-03-28)

    The high energy astrophysics, specifically the gamma-ray astrophysics, studies the processes that cannot be caused by hot matter but by other mechanisms colled non thermaland processes, which involve matter with energies ...

    High performance computing of massive Astrometry and Photometry data from Gaia 

    Castañeda Pons, Javier Bernardo (Date of defense: 2015-12-15)

    Gaia is an extremely ambitious astrometric space mission adopted within the scientific programme of the European Space Agency (ESA) in October 2000. It aims to measure with very high accuracy the positions, motions and ...

    Implementation of a high resolution regional ocean model for investigating air-sea interaction in the Mediterranean Area 

    Shinde, Mahesh (Date of defense: 2016-02-01)

    The investigation of climate variability in different timescales such as daily, monthly, seasonal and inter-annual has utmost importance for managing the socio-economic processes on regional to global scale. Indeed, the ...

    Implementing the Gaia Astrometric Solution 

    O'Mullane, William (Date of defense: 2012-03-23)

    As is the way with books in general this document is presented in the form of chapters (seven in number) devoted to individual topics relating to the overall topic of Gaia astrometric data processing. We progress logically ...

    Improvement of seasonal forecasting techniques applied to water resources and forest fires 

    Marcos Matamoros, Raül (Date of defense: 2016-02-09)

    This thesis studies the benefits of different calibration approaches on seasonal forecasting and the improvement of seasonal prognosis of water resources and forest fires. Droughts and wildfires are an inherent problem to ...

    Integral spectroscopy of black hole transients and multi-wavelengh study of a new accreting binary system 

    Caballero García, María Dolores (Date of defense: 2008-06-27)

    En esta tesis utilizamos los instrumentos de altas energías del satélite INTEGRAL para hacer espectroscopía y la cámara OMC para hacer fotometría de dos tipos diferentes de objetos celestes emisores ...

    Large scale structure and dark energy 

    Cabré Albós, Anna (Date of defense: 2008-06-30)

    The cosmic expansion history tests the dynamics of the global evolution of the universe<br/>and its energy density contents, while the cosmic growth history tests the evolution of the<br/>inhomogeneous part of the energy ...

    Large scale structure with Lyman-alpha absorption surveys 

    Font Ribera, Andreu (Date of defense: 2011-09-30)

    [cat] Gran part dels estudis presentats en aquesta tesi doctoral estan vinculats als esforços per detectar les oscil·lacions acústiques dels barions (BAO, de l’anglès Baryon Acoustic Oscillations) en la funció de correlació ...

    Magnetized Dense Cores. Observational characterization and comparison with models 

    Frau Méndez, Pau (Date of defense: 2012-06-12)

    It is some observational evidence that dense cores are the birthplace of low-mass stars. These regions, apparently quiescent, are capable of surviving several free-fall times and, potentially, collapse and form stars. ...

    Microquasar jets and their interaction with the medium: theoretical studies and observations with the MAGIC telescope 

    Bordas Coma, Pol (Date of defense: 2009-10-14)

    [eng] The present thesis focuses on the investigation of some of the high energy processes ocurring in microquasars. The matter content and the power transported in the jets of microquasars are studied, the effects that ...

    Milky Way-like galaxy simulations in the Gaia era: disk large scale structures and baryonic content 

    Roca Fàbrega, Santi (Date of defense: 2014-11-26)

    Simulations have shown to be one of the best tools to study properties of galactic large scale structures and their effects on to the local kinematics of stars. The aims of this thesis are: i) To obtain realistic N-body ...

    Modeling the atmospheric boundary layer in stably stratified conditions and over complex terrain areas: from mesoscale to LES 

    Udina Sistach, Mireia (Date of defense: 2015-12-10)

    The atmospheric boundary layer in stably-stratified conditions and over non-homogeneous terrain becomes a complex system with many interactions of physical processes occurring in a wide range of different spatial and ...

    Modeling the gravitational clustering in hierarchical scenarios of structure formation 

    Manrique Oliva, Alberto (Date of defense: 1995-09-26)

    En la tesis se presenta un método semianalítico para describir el crecimiento de objetos virializados en el escenario de inestabilidad gravitatoria. Se ha desarrollado el formalismo del sistema confluente de trayectorias, ...

    Modelització de precipitacions intenses en zones d'orografia complexa: casos d'estudi al Pirineu Oriental 

    Trapero i Bagué, Laura (Date of defense: 2014-12-03)

    Els episodis de precipitació intensa en zones de muntanya sovint es veuen afavorits pels efectes orogràfics que actuen com a mecanismes que modifiquen la precipitació. Aquest treball vol contribuir a millorar el coneixement ...

    Modelització i simulació fotoquímica mesoscalar del transport del material particulat i gasos a l’atmosfera 

    Arasa Agudo, Raúl (Date of defense: 2011-07-20)

    Durant les últimes dècades la quantitat de gasos i partícules contaminants que s’han injectat a l’atmosfera ha augmentat considerablement. Evidència d’aquesta informació són les elevades concentracions de diòxid de nitrogen ...

    Modelling SEP events: latitudinal and longitudinal dependence of the injection rate of shock-accelerated protons and their flux profiles 

    Rodríguez Gasén, Rosa (Date of defense: 2011-05-06)

    Gradual SEP events is one of the greatest hazards in space environment, particularly for the launch and operation of spacecraft and for manned exploration. Predictions of their occurrence and intensity are essential to ...

    Modelo politrópico de cúmulo de galaxias con segregación morfológica inducida por barrido de presión cinética 

    Solanes Majúa, Josep Maria (Date of defense: 1990-09-28)

    El desarrollo de un modelo politrópico y autoconsistente de cúmulo rico de galaxias ha permitido caracterizar las propiedades estructurales y cinemáticas típicas de estos sistemas, así como estudiar detalladamente los ...

    Moving Groups as imprints of the non-axisymetric components of the Milky Way 

    Antoja Castelltort, M. Teresa (Date of defense: 2010-04-30)

    One of the most intriguing features of the stellar velocity distribution in the solar neighbourhood is the existence of moving groups. At present, the origin of these kinematic structures is far from completely understood ...

    Near-relativistic electron events. Monte Carlo simulations of solar injection and interplanetary transport 

    Àgueda Costafreda, Neus (Date of defense: 2008-04-28)

    We have developed a Monte Carlo model to simulate the transport of solar near-relativistic (NR; 30-300 keV) electrons along the interplanetary magnetic field (IMF), including adiabatic focusing, pitch-angle dependent ...

    A new classification of gamma-ray bursts and its cosmological implications 

    Balastegui Manso, Andreu (Date of defense: 2006-04-20)

    Los estallidos de rayos gamma (del inglés gamma-ray bursts o GRBs para abreviar) se han clasificado tradicionalmente en GRBs cortos y duros, y GRBs largos y blandos, de acuerdo a la distribución biomodal de sus duraciones. ...