Using two interchangeable
T
-shaped configurations of 10-15 horn elements, simulations have
shown that it is possible to obtain maps of suitable sensitivity
over the desired range of angular scales. The planned instrument
would be sited at the Teide Observatory, Tenerife, at an altitude
of 2400m and would make observations between 28 and 38 GHz,
to enable the Galactic component to be estimated and removed. The
good accuracy available over a scale range that is well-matched
to the positions of the first and secondary Doppler peaks in the
power spectrum, should enable measurements of
and
to be made to an accuracy of better than 10% after 12 months of
observations. We believe that this will be refined somewhat by
better array configuration design and the use of proper models
and secondary peak information (all work in progress). In
addition, simulations have shown that the proposed observing
strategy will be quite sensitive to the non-Gaussian features
expected on these angular scales if (e.g.) textures or monopoles
are the seed perturbations for galaxy formation (Maisinger,
Hobson, Lasenby & Turok [72
]). The instrument is currently under construction at Cambridge
and Jodrell Bank in the U.K., and is hoped it will be operational
by the year 2000.
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The Cosmic Microwave Background
Aled W. Jones and Anthony N. Lasenby http://www.livingreviews.org/lrr-1998-11 © Max-Planck-Gesellschaft. ISSN 1433-8351 Problems/Comments to livrev@aei-potsdam.mpg.de |