Astronomy and Astrophysics – Astrophysics
Scientific paper
2004-01-12
Astronomy and Astrophysics
Astrophysics
10 pages, 2 figures, to appera in proc. Int. Symp. "Plasmas in the Laboratory and in the Universe: new insights and new challe
Scientific paper
10.1063/1.1718483
The Sunyaev-Zeldovich (SZ) effect has proven to be an extremely powerful tool to study the physical and evolutionary properties of rich clusters of galaxies. Upcoming SZ experiments, with their much improved sensitivity and angular resolution, will provide unique information also on phases of galaxy evolution characterized by the presence of large amounts of hot proto-galactic gas. We present a preliminary analysis of the SZ signals that can be expected at the collapse of the proto-galaxy when, according to the standard scenario, the gas is heated at its virial temperature, and during episodes of strong energy injections from the active nucleus. The contributions of such signals to excess power on arc-minute scales recently found by CBI and BIMA experiments are briefly discussed.
Burigana Carlo
Cavaliere Alfonso
Danese Lugi
de Zotti Gianfranco
Granato Gian Luigi
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