TY - JOUR
T1 - Preliminary Sunyaev-Zel'dovich observations of galaxy clusters with OCRA-p
AU - Lancaster, Katy
AU - Birkinshaw, Mark
AU - Gawroński, Marcin P.
AU - Browne, Ian
AU - Feiler, Roman
AU - Kus, Andrzej
AU - Lowe, Stuart
AU - Pazderski, Eugeniusz
AU - Wilkinson, Peter
PY - 2007/6/1
Y1 - 2007/6/1
N2 - We present 30-GHz Sunyaev-Zel'dovich (SZ) observations of a sample of four galaxy clusters with a prototype of the One Centimetre Receiver Array (OCRA-p) which is mounted on the Torun 32-m telescope. The clusters (Cl 0016+16, MS 0451.6-0305, MS 1054.4-0321 and Abell 2218) are popular SZ targets and serve as commissioning observations. All four are detected with clear significance and values for the central temperature decrement are in good agreement with measurements reported in the literature. We believe that systematic effects are successfully suppressed by our observing strategy. The relatively short integration times required to obtain these results demonstrate the power of OCRA-p and its successors for future SZ studies.
AB - We present 30-GHz Sunyaev-Zel'dovich (SZ) observations of a sample of four galaxy clusters with a prototype of the One Centimetre Receiver Array (OCRA-p) which is mounted on the Torun 32-m telescope. The clusters (Cl 0016+16, MS 0451.6-0305, MS 1054.4-0321 and Abell 2218) are popular SZ targets and serve as commissioning observations. All four are detected with clear significance and values for the central temperature decrement are in good agreement with measurements reported in the literature. We believe that systematic effects are successfully suppressed by our observing strategy. The relatively short integration times required to obtain these results demonstrate the power of OCRA-p and its successors for future SZ studies.
KW - Cosmic microwave background
KW - Cosmology: observations
KW - Galaxies: clusters: individual: A2218
KW - Galaxies: clusters: individual: Cl 0016+16
KW - Galaxies: clusters: individual: MS 0451.6-0305
KW - Galaxies: clusters: individual: MS 1054.4-0321
UR - http://www.scopus.com/inward/record.url?scp=34250369634&partnerID=8YFLogxK
U2 - 10.1111/j.1365-2966.2007.11808.x
DO - 10.1111/j.1365-2966.2007.11808.x
M3 - Article (Academic Journal)
AN - SCOPUS:34250369634
SN - 0035-8711
VL - 378
SP - 673
EP - 680
JO - Monthly Notices of the Royal Astronomical Society
JF - Monthly Notices of the Royal Astronomical Society
IS - 2
ER -