Open AccessA possible contribution to CMB anisotropies at high ℓ from primordial voids
Author(s) -
Griffiths Louise M.,
Kunz Martin,
Silk Joseph
Publication year - 2003
Publication title -
monthly notices of the royal astronomical society
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 2.058
H-Index - 383
eISSN - 1365-2966
pISSN - 0035-8711
DOI - 10.1046/j.1365-8711.2003.06211.x
Subject(s) - physics , cosmic microwave background , astrophysics , void (composites) , decoupling (probability) , spectral density , anisotropy , cosmic background radiation , reionization , astronomy , cosmology , cosmic cancer database , galaxy , optics , redshift , statistics , materials science , mathematics , control engineering , composite material , engineering
We present preliminary results of an analysis into the effects of primordial voids on the cosmic microwave background (CMB). We show that an inflationary bubble model of void formation predicts excess power in the CMB angular power spectrum that peaks between 2000 < ℓ < 3000 . Therefore, voids that exist on or close to the last scattering surface at the epoch of decoupling can contribute significantly to the apparent rise in power on these scales recently detected by the Cosmic Background Imager (CBI).