In the Λ-CDM galaxy formation paradigm, the star formation history of a galaxy is coupled to the total mass of its dark matter halo through processes like...
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CharlaGlobular clusters systems and their host dark matter halos
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CharlaGravitational Lensing as Cosmological Tools
Gravitational lensing is a powerful astrophysical tool which allow us to studythe dark sector of the universe. Some of these applications include from thestudy...
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PublicaciónGravitational waves from galaxy encounters
We discuss the emission of gravitational radiation produced in encounters of dark matter galactic halos. To this aim we perform a number of numerical...
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PublicaciónGrowing a `cosmic beast': observations and simulations of MACS J0717.5+3745
We present a gravitational lensing and X-ray analysis of a massive galaxy cluster and its surroundings. The core of MACS J0717.5+3745 (M(R
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PublicaciónHalo concentrations in the standard Λ cold dark matter cosmology
We study the concentration of dark matter haloes and its evolution in N-body simulations of the standard Λ cold dark matter (ΛCDM) cosmology. The results...
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PublicaciónHigh-velocity clouds as dark matter in the Local Group
The High-Velocity Clouds (HVCs) observed in the Galactic neighbourhood, have been proposed to be remnants of the formation of the galaxies in the Local Group...
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PublicaciónHow Far Do They Go? The Outer Structure of Galactic Dark Matter Halos
We study the density profiles of collapsed galaxy-size dark matter halos with masses 1011 to 5×1012 Msolar focusing mostly on the halo outer regions from the...
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CharlaHow to use a cosmological N-body simulation as a theoretical model
A key problem that we are facing in cosmology nowadays is that we cannot make accurate predictions with our current theoretical models. We have all of the...
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CharlaHow well does galaxy clustering constrain cosmology?
On the LCDM cosmology, dark matter collapses into virialised objects called haloes. The abundance and distribution of these haloes are a direct consequence of...