Extraction of cluster parameters with future Sunyaev - Zel'dovich observations

Dec, 2002
10 pages
Published in:
  • JCAP 05 (2003) 007
e-Print:

Citations per year

200320052007200920106510
Abstract: (arXiv)
The Sunyaev-Zel'dovich (SZ) effect of galaxy clusters is characterized by three parameters: Compton parameter, electron temperature and cluster peculiar velocity. In the present study we consider the problem of extracting these parameters using multi-frequency SZ observations only. We show that there exists a parameter degeneracy which can be broken with an appropriate choice of frequencies. As a result we discuss the optimal choice of observing frequencies from a theoretical point of view. Finally, we analyze the systematic errors (of the order micro K) on the SZ measurement introduced by finite bandwidths, and suggest a possible method of reducing these errors.