Michael Thierbach | Searcharxiv

arXiv1999

Current Status of Radio Observations of selected Clusters of Galaxies with the 100-m Telescope Effelsberg

We present the current status of radio observations of several clusters of galaxies done with the 100-m telescope Effelsberg. The purpose of this still ongoing project is to obtain new sensitive single-dish measurements of large extended diffuse radio sources in these clusters. The use of a single-dish is required to recover all the flux. In this paper we present the current maps of the clusters Coma, Abell 2256 and Abell 2163.

astro-ph↗

arXiv1997

X-Ray Properties of three Clusters of Galaxies and their Implications for the Sunyaev-Zeldovich Effect

We present the preparation for an observation of the Sunyaev-Zeldovich (SZ) effect with the 100m telescope in Effelsberg. We calculate the expected diminution of the cosmic microwave background radiation (CMB) at radio wavelength towards a small sample of clusters of galaxies: A85, A665, and Cl0016+16. We obtain the required parameters from the X-ray analysis of ROSAT PSPC data of these clusters. We derive expected central diminutions ΔT_R,max of -(440\pm 180)μK for A665 and -(810\pm 680)μK for Cl0016+16. For the cluster A85 we find evidence for a cooling flow. The best candidate for a SZ measurement is the cluster 0016+16.

astro-ph↗