The cosmic microwave background power spectrum out to l= 1400 measured by the Very Small Array

Bibcode
2003MNRAS.341L..23G
DOI
10.1046/j.1365-8711.2003.06563.x
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
Referencia bibliográfica

Monthly Notice of the Royal Astronomical Society, Volume 341, Issue 4, pp. L23-L28.

Fecha de publicación:
6
2003
Número de autores
31
Número de autores del IAC
5
Número de citas
132
Número de citas referidas
109
Descripción
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.
Tipo
Con árbitro
Cosmología

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