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Categoria: Cosmologia

14th Marcel Grossmann Meeting on Recent Developments in Theoretical and Experimental General Relativity, Astrophysics, and Relativistic Field Theories

The Fourteenth Marcel Grossmann Meeting on Recent Developments in Theoretical and Experimental General Relativity, Gravitation, and Relativistic Field Theory will take place at the University of Rome Sapienza July 12 - 18, 2015, celebrating the 100th anniversary of the Einstein equations as well as the International Year of Light under the aegis of the United…

AdS/CFT, self-adjoint extension and the resolution of cosmological singularities

In the context of Einstein gravity coupled to matter satisfying fairly general energy conditions, cosmological singularities are unavoidable, as was proven by Hawking and Penrose many year ago. One of the hopes for superstring theory is that a solution to this problem may be found. Clearly, however, a non-perturbative formulation of string theory must be…

Drifting through the Cosmic Web

The Large Scale Structure of the Universe (LSS) was first discussed at the IAU Symposium No. 79 in 1977 in Tallinn. The title of the Symposium : “The Large Scale Structure of the Universe” , was the first official use of this term (J. Einasto). Since then, it has been of major interest in cosmology. This large…

A 3D View on Galaxy Evolution

To decipher the underlying processes that shape galaxies over time, we need to uncover their physical properties and the conditions controlling them. This in turn requires in-depth measurements of the stars, gas and dust, inside as well as surrounding the galaxies. (altro…)

Il senso dell'Universo

La nostra "cosmologia" si può considerare come la somma delle nostre assunzioni e deduzioni che ci permettono di comprendere, in qualche modo, come funziona e si comporta l'Universo. (altro…)

Gli ammassi di galassie

  Gli ammassi di galassie rappresentano le strutture più grandi legate dalla gravità. Essi possono contenere migliaia di galassie confinate in un volume di spazio esteso all'incirca 10 milioni di anni-luce. Si tratta di laboratori cosmici dove gli astronomi studiano l'evoluzione galattica dato che molti processi fisici, che possono modificare la struttura delle galassie, avvengono…