Bibcode
Grainge, Keith; Carreira, Pedro; Cleary, Kieran; Davies, Rod D.; Davis, Richard J.; Dickinson, Clive; Genova-Santos, Ricardo; Gutiérrez, Carlos M.; Hafez, Yaser A.; Hobson, Michael P.; Jones, Michael E.; Kneissl, Rüdiger; Lancaster, Katy; Lasenby, Anthony; Leahy, J. P.; Maisinger, Klaus; Pooley, Guy G.; Rebolo, Rafael; Rubiño-Martin, J. A.; Sosa Molina, Pedro J.; Ödman, Carolina; Rusholme, Ben; Saunders, Richard D. E.; Savage, Richard; Scott, Paul F.; Slosar, Anže; Taylor, Angela C.; Titterington, David; Waldram, Elizabeth; Watson, Robert A.; Wilkinson, Althea
Bibliographical reference
Monthly Notice of the Royal Astronomical Society, Volume 341, Issue 4, pp. L23-L28.
Advertised on:
6
2003
Citations
132
Refereed citations
109
Description
We have observed the cosmic microwave background (CMB) in three regions
of sky using the Very Small Array (VSA) in an extended configuration
with antennas of beamwidth 2° at 34 GHz. Combined with data from
previous VSA observations using a more compact array with larger
beamwidth, we measure the power spectrum of the primordial CMB
anisotropies between angular multipoles l= 160 and 1400. Such
measurements at high l are vital for breaking degeneracies in parameter
estimation from the CMB power spectrum and other cosmological data. The
power spectrum clearly resolves the first three acoustic peaks, shows
the expected fall-off in power at high l and starts to constrain the
position and height of a fourth peak.