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23 April 2024 |
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The Sunyaev-Zeldovich Effect at 1 and 2 mm towards ROSAT Clusters | | P.Andreani
; G.Dall’Oglio
; L.Pizzo
; L.Martinis
; P.Shaver
; H.Boehringer
; R. Lemke
; L.-A.Nyman
; R.Booth
; N.Whyborn
; | | Date: |
28 Aug 1996 | | Subject: | astro-ph | | Affiliation: | Univ.Padova), G.Dall’Oglio (III Univ.Roma), L.Pizzo (III Univ.Roma), L.Martinis (ENEA,Roma), P.Shaver (ESO,Garching), H.Boehringer (MPE Garching), R. Lemke, L.-A.Nyman (ESO,LaSilla), R.Booth (ONSALA), N.Whyborn (SRON Groningen | | Abstract: | An observing campaign was devoted to the search for the Sunyaev-Zeldovich (S-Z) effect towards X-ray ROSAT Clusters in the millimetric spectral domain. A double channel (1.2 and 2 {it mm}) photometer was installed at the focus of the 15m Swedish ESO Submillimeter Telescope (SEST) in Chile in september 1994 and 1995 and observations of the targets S1077, A2744, S295 and RXJ0658-5557 were gathered. Detections were found for A2744 at 1 {it mm} and in both channels (at 1.2 and 2 {it mm}) towards RXJ0658-5557. For the first time there is evidence for the S-Z enhancement and both the latter and the decrement were detected on the same source. We discuss astrophysical and systematic effects which could give origin to these signals. | | Source: | arXiv, astro-ph/9608187 | | Services: | Forum | Review | PDF | Favorites | |
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