Compton scattering of the cosmic microwave background radiation by electrons in the hot gas in clusters of galaxies the Sunyaev-Zeldovich (S-Z) effect - has long been recognized as a uniquely important feature, rich in cosmological and astrophysical information. We briefly describe the effect, and emphasize the need for detailed S-Z and X-ray measurements of nearby clusters in order to use the effect as a precise cosmological probe. This is the goal of the MITO project, whose first stage consisted of observations of the S-Z effect in the Coma cluster. We report the results of these observations.
The Sunyaev-Zeldovich MITO project / D'Alba, Livia; Melchiorri, Francesco; DE PETRIS, Marco; Orlando, A; Lamagna, Luca; Rephaeli, Y; Colafrancesco, S; Signore, M; Kreysa, E.. - In: NEW ASTRONOMY REVIEWS. - ISSN 1387-6473. - 45:(2001), pp. 329-335. [10.1016/S1387-6473(00)00155-X]
The Sunyaev-Zeldovich MITO project
D'ALBA, Livia;MELCHIORRI, Francesco;DE PETRIS, Marco;LAMAGNA, Luca;
2001
Abstract
Compton scattering of the cosmic microwave background radiation by electrons in the hot gas in clusters of galaxies the Sunyaev-Zeldovich (S-Z) effect - has long been recognized as a uniquely important feature, rich in cosmological and astrophysical information. We briefly describe the effect, and emphasize the need for detailed S-Z and X-ray measurements of nearby clusters in order to use the effect as a precise cosmological probe. This is the goal of the MITO project, whose first stage consisted of observations of the S-Z effect in the Coma cluster. We report the results of these observations.I documenti in IRIS sono protetti da copyright e tutti i diritti sono riservati, salvo diversa indicazione.
