Conveners
Astrophysics/Cosmology
- Marica Branchesi (FI)
Astrophysics/Cosmology
- Angiola Orlando (University of California, San Diego)
Astrophysics/Cosmology
- Shuang-Nan Zhang (Institute of High Energy Physics)
Giampaolo Mannocchi
(LNF),
Roberto Fusco Femiano
(IASF-Roma/INAF)
19/05/2014, 08:45
Michel Boer
(CNRS-ARTEMIS)
19/05/2014, 09:00
Until now, most of the objects in the sky have been studied using solely electromagnetic radiation. Cosmic rays have been detected for more than a century, and their origin(s) is still under debate. Several instruments are in operation or close to completion to study astrophysical sources by non-photonic means, i.e. neutrinos and gravitational waves. This can be considered as the opening of an...
Stefano Ettori
(INAF OA Bologna)
19/05/2014, 09:25
The key tool to use galaxy clusters as astrophysical laboratories and cosmological probes is the knowledge of the distribution of the their gravitating and baryonic mass.
I'll discuss some of the limitations affecting the X-ray reconstruction of the gas and total mass profiles. I'll illustrate how the estimates of the gas mass fraction and of the mass concentration can be used as robust...
Gianfranco Brunetti
(IRA - INAF)
19/05/2014, 09:50
Radio observations prove the existence of relativistic particles and magnetic fields associated with the intra-cluster-medium (ICM) through the presence of extended synchrotron emission. These non-thermal components in galaxy clusters are unique probes of very energetic processes operating within clusters that drain gravitational and electromagnetic energy into cosmic rays and magnetic...
Fabrizio Nicastro
(INAF - OAR)
19/05/2014, 10:15
Baryons are missing at all astronomical scales in the Universe, from galaxies to the large scales of structure formation and the Universe as a whole. Hydro-dynamical simulations for the formation of structures, tend to re-concile the different "missing-baryon" problems and predict that most of the baryonic matter of the Universe is hiding in a hot and tenuous gaseous phase, surrounding...
Massimiliano Lattanzi
(FE)
19/05/2014, 11:00
The tiny temperature and polarization anisotropies of the cosmic microwave background (CMB) radiation encode a wealth of information about our Universe. The CMB anisotropies have been the target of many experiments in the past twenty years, starting with COBE’s observations of the large-scale temperature fluctuations in the early 90s.
In 2013, the Planck satellite provided the most accurate...
Carlo Gustavino
(INFN-Rome)
19/05/2014, 11:25
Big Bang Nucleosynthesis (BBN) theory describes the formation of light isotopes in the first minutes of cosmic time. Their abundance only depends on the baryon density, on particle physics and on nuclear astrophysics, through the competition between the universal expansion rate and the yields of the relevant nuclear reactions. The baryon density [1,2] and the observed abundance of light...
