Cosmology and Astrophysics with Galaxy Clusters

ISAS astro seminar

Prof. Daisuke Nagai (Yale)
Thursday December 25, 11:00 am
1134 : Bldg-A 1F Nyusatsu room

Title:  Cosmology and Astrophysics with Galaxy Clusters

Abstract: 
Galaxy clusters are the most recently formed cosmological objects in
the universe, making them ideal for studying the interplay between
cosmology and baryonic physics in structure formation. Understanding
their formation and growth requires not only an understanding of the
baryonic physics behind gas cooling, star and black hole formation,
and feedback processes, but also the detailed dynamics of how gas
accretes from the cosmic filaments onto the virialization regions in
the outskirts of galaxy clusters throughout their lifetime. Recent
X-ray and microwave observations have revealed detailed thermodynamic
structure of the hot X-ray emitting plasma from their cores to the
virial radii, making comparisons of baryonic component in simulations
to observations a strong cosmological probe. In this talk, I will
review recent advances in our understanding of cluster astrophysics
and discuss future prospects, opportunities and challenges (including
upcoming measurement of turbulent gas motions with ASTRO-H) a for
the use of galaxy clusters as a precision cosmological probe.

http://physics.yale.edu/people/daisuke-nagai