Further Sunyaev-Zel'dovich observations of two Planck ERCSC clusters with the Arcminute Microkelvin Imager
Abstract
We present follow-up observations of two galaxy clusters detected blindly via the Sunyaev-Zel'dovich (SZ) effect and released in the Planck Early Release Compact Source Catalogue. We use the Arcminute Microkelvin Imager, a dual-array 14-18 GHz radio interferometer. After radio source subtraction, we find a SZ decrement of integrated flux density -1.08 ± 0.10 mJy towards PLCKESZ G121.11+57.01, and improve the position measurement of the cluster, finding the centre to be RA ?, to an accuracy of 20 arcsec. The region of PLCKESZ G115.71+17.52 contains strong extended emission, so we are unable to confirm the presence of this cluster via the SZ effect. We request that any reference to this Letter cites 'AMI Consortium: Hurley-Walker et al. 2011'.
- Publication:
-
Monthly Notices of the Royal Astronomical Society
- Pub Date:
- June 2011
- DOI:
- 10.1111/j.1745-3933.2011.01059.x
- arXiv:
- arXiv:1103.0947
- Bibcode:
- 2011MNRAS.414L..75H
- Keywords:
-
- radiation mechanisms: non-thermal;
- galaxies: clusters: individual: PLCKESZ G115.71+17.52;
- PLCKESZ G121.11+57.01;
- cosmology: observations;
- Astrophysics - Cosmology and Nongalactic Astrophysics
- E-Print:
- 4 tables, 3 figures, revised after referee's comments and resubmitted to MNRAS