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Astron. Astrophys. 325, 516-522 (1997)

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Sunyaev-Zeldovich effect measured towards Abell cluster A 2218

B. Uyanker , W. Reich , R. Schlickeiser and R. Wielebinski

Max-Planck-Institut für Radioastronomie, Postfach 2024, D-53010 Bonn, Germany

Received 25 March 1996 / Accepted 2 April 1997


We report a new measurement of the cosmological Sunyaev-Zeldovich (SZ) diminution of [FORMULA] at 10.55 GHz with the Effelsberg 100-m radio telescope towards the A 2218 cluster of galaxies. We also report and analyse the X-ray observations of the A 2218 cluster of galaxies with the ROSAT satellite. The position and the strength of the measured SZ diminution are in excellent agreement with the expectations calculated from the X-ray analysis.

Key words: cluster of galaxies: A 2218 – plasmas – radiative transfer – cosmology: diffuse radiation

Send offprint requests to: B. Uyanker

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© European Southern Observatory (ESO) 1997

Online publication: April 28, 1998