From elia.battistelli at roma1.infn.it  Fri Sep 21 00:03:28 2018
From: elia.battistelli at roma1.infn.it (Elia Battistelli)
Date: Fri, 21 Sep 2018 00:03:28 +0200
Subject: [astroseminar@Sapienza] 05/10/2018 at 16:00: Martin Lopez Corredoira
Message-ID: <4f4f26cea65c08e2879c9cdb6b48bc5b@roma1.infn.it>


Title: Problems with the dark matter and dark energy hypotheses, and 
alternative ideas.
Speaker:  Martin Lopez Corredoira
Institution: Instituto de Astrofisica de Canarias
Date: Friday, 05 October 2018
Time: 4:00pm
Location: Aula Conversi, Marconi Building, Dept. of Physics, Sapienza 
University

Abstract:
Non-baryonic dark matter and dark energy are two exotic elements 
introduced in standard cosmology. The success in converting a hypothesis 
into a solid theory depends strongly on whether we are able to solve the 
problems in explaining observations with these dark elements and whether 
the solutions of these problems are unique within the standard paradigm 
without recourse to alternative scenarios. That goal has not achieved 
yet because of numerous inconsistencies, mainly on galactic scales, the 
non-detection so far of candidate particles for dark matter, and the 
existence of many alternative hypotheses that might substitute the 
standard picture. A review of some ideas and facts is given here.

web: https://agenda.infn.it/conferenceDisplay.py?confId=16849

From elia.battistelli at roma1.infn.it  Tue Sep 25 10:36:17 2018
From: elia.battistelli at roma1.infn.it (Elia Battistelli)
Date: Tue, 25 Sep 2018 10:36:17 +0200
Subject: [astroseminar@Sapienza] 02/10/2018 at 16:00: Volker Bromm
	(SEMINARIO GENERALE)
Message-ID: <71b4bc83ad92afe7002fc081c0f4b632@roma1.infn.it>

GENERAL COLLOQUIUM OF THE PHYSICS DEPARTMENT

Title: The First Billion Years of Cosmic History
Speaker:   Volker Bromm
Institution: University of Texas at Austin, U.S.A.
Date: Tuesday, 2 October 2018
Time: 4:00pm
Location: Aula Conversi, Marconi Building, Dept. of Physics, Sapienza 
University

Abstract:
The universe went through a number of fundamental transitions during 
its first billion years. The cosmological initial conditions, imprinted 
by quantum mechanical processes in the inflationary fireball, gave rise 
to the first non-linear structures, when the initial simplicity gave way 
to an ever increasing complexity. Facilitated by dark matter,  
primordial gas collapsed to form the first stars, galaxies, and black 
holes, a few hundred million years after the Big Bang. I will review our 
emerging theoretical understanding of this grand cosmic transformation, 
and will discuss strategies to test our ideas with frontier observations 
from the ground and in space. An important aspect of this program is to 
harness early structure formation to probe the particle physics nature 
of the elusive dark matter.

web: https://agenda.infn.it/conferenceDisplay.py?confId=14963


