Astronomy and Astrophysics Seminars
Probing the Bullet Cluster with the Sunyaev-Zel'dovich effect
by Dr. Siddharth Savyasachi Malu (Raman Research Institute, Bangalore)
Tuesday, September 20, 2011
from
to
(Asia/Kolkata)
at Colaba Campus ( AG 66 )
at Colaba Campus ( AG 66 )
TIFR
Description |
I will present 12mm observations of the Bullet cluster from the Australia Telescope Compact Array; in particular, a high angular resolution measurement of the substructure in Sunyaev-Zel'dovich Effect (SZE) and will talk about the discovery of multiple compact SZ features in the Bullet cluster. None of these SZE feature centres corresponds to any bright spot in X-ray, optical or lensing maps. This implies that the gas pressure distribution differs significantly from the distributions in gas emission measure, galaxy and dark matter distributions. |