Mathematics – Logic
Scientific paper
Jan 2001
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2001iaus..204...57g&link_type=abstract
The Extragalactic Infrared Background and its Cosmological Implications, Proceedings of IAU Symposium #204, held 15-18 August 20
Mathematics
Logic
Scientific paper
Inverse Compton scattering of the Cosmic Microwave Background (CMB) on hot electrons of the intergalactic medium (the so-called Sunyaev Zel'dovich effect) is a unique tool which directly provides the total energy of baryon clouds up to very high redshifts, e.g. z ≃ 1. As a distortion of the CMB, it is insensitive to the usual cosmic dimming effect and it allows an almost unbiased investigation of the formation of large scale structures in the Universe. This presentation will focus on observational and theoretical aspects of the submillimeter part of the S. Z. spectrum. The emissions of dust in our Galaxy and from star-forming galaxies in the fields are the main limiting factors to submillimeter/millimeter measurements of the S. Z. effect. We will present the current state of observations of massive clusters of galaxies in this wavelength range, and will emphasise the possibilities promised by future satellite instruments, PLANCK and FIRST. We will also detail how the submillimeter S. Z. distortion is related to the high energy tail in the distribution of relativistic electrons, and how this feature could be exploited to derive the physical parameters of the intra-cluster gas.
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