scholarly journals AMIBA: FIRST-YEAR RESULTS FOR SUNYAEV-ZEL'DOVICH EFFECT

2008 ◽  
Vol 23 (17n20) ◽  
pp. 1675-1686 ◽  
Author(s):  
JIUN-HUEI PROTY WU ◽  
TZI-HONG CHIUEH ◽  
CHI-WEI HUANG ◽  
YAO-WEI LIAO ◽  
FU-CHENG WANG ◽  
...  
Keyword(s):  
Cosmic Microwave Background ◽  
Galaxy Clusters ◽  
First Year ◽  
Microwave Background ◽  
Expansion Plan ◽  
Sunyaev Zel'dovich Effect ◽  
Systematic Effects ◽  
Science Operation

We discuss the observation, analysis, and results of the first-year science operation of AMiBA, an interferometric experiment designed to study cosmology via the measurement of Cosmic Microwave Background (CMB). In 2007, we successfully observed 6 galaxy clusters (z < 0.33) through the Sunyaev-Zel'dovich effect. AMiBA is the first CMB interferometer operating at 86–102 GHz, currently with 7 close-packed antennas of 60 cm in diameter giving a synthesized resolution of around 6 arcminutes. An observing strategy with on-off-source modulation is used to remove the effects from electronic offset and ground pickup. Formalism of the analysis is given and preliminary science results are summarized. Tests for systematic effects are also addressed. We also discuss the expansion plan.

scholarly journals Microwave Background interferometry in Cambridge

1991 ◽  
Vol 131 ◽  
pp. 395-399
Author(s):  
Michael E. Jones
Keyword(s):  
High Temperature ◽  
Cosmic Microwave Background ◽  
Temperature Sensitivity ◽  
Filling Factor ◽  
Integration Time ◽  
Microwave Background ◽  
New Instrument ◽  
Sunyaev Zel'dovich Effect ◽  
Systematic Effects ◽  
High Temperature Sensitivity

AbstractInterferometric methods of studying the Cosmic Microwave Background (CMB) have some distinct advantages over the switched-beam techniques which have mostly been used. However, most existing interferometers are not well suited to CMB observations, for a variety of reasons. These include poor temperature sensitivity due to a low filling factor, and systematic effects which limit the maximum possible integration time. A new instrument, the Ryle Telescope, has been developed in Cambridge which has a high temperature sensitivity (120 μK in 12 h) and the ability to integrate for several hundred hours on the same field. It will be used to study the CMB on angular scales of a few arcminutes, with particular emphasis on the Sunyaev-Zel’dovich effect. A second instrument to study the CMB on angular scales of tens of arcminutes, the Cosmic Anisotropy Telescope (CAT), is also being developed.

scholarly journals The MAP Satellite Mission to Map the CMB Anisotropy

2005 ◽  
Vol 201 ◽  
pp. 75-85
Author(s):  
Lyman. Page
Keyword(s):  
Cosmic Microwave Background ◽  
Design Principle ◽  
Instrument Design ◽  
Deep Space ◽  
Microwave Background ◽  
Satellite Mission ◽  
Mapping Strategy ◽  
Systematic Effects ◽  
Error Bars

The Microwave Anisotropy Probe (MAP) satellite is scheduled to launch in mid-2001. MAP's goal is to produce a map of the anisotropy in the cosmic microwave background of unprecedented accuracy and precision. The guiding design principle has been the minimization of systematic effects. The instrument design and mapping strategy work in concert to take advantage of the unique opportunities afforded by deep space. We give an overview of the mission and compare the projected MAP error bars to recent measurements.

scholarly journals Cosmic Microwave Background Temperature at Galaxy Clusters

2002 ◽  
Vol 580 (2) ◽  
pp. L101-L104 ◽  
Author(s):  
E. S. Battistelli ◽  
M. De Petris ◽  
L. Lamagna ◽  
F. Melchiorri ◽  
E. Palladino ◽  
...  
Keyword(s):  
Cosmic Microwave Background ◽  
Galaxy Clusters ◽  
Microwave Background ◽  
Cosmic Microwave Background Temperature ◽  
Background Temperature
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