Spectral Spatial Fluctuations of CMBR: Strategy and Concept of the Experiment

Viktor Dubrovich; Anisa Bajkova; Vladimir Khaikin

doi:10.1016/j.newast.2007.06.006

paper

Spectral Spatial Fluctuations of CMBR: Strategy and Concept of the Experiment

arXiv:0711.1223 · doi:10.1016/j.newast.2007.06.006

Abstract

Spectral Spatial Fluctuations (SSF) of the Cosmic Microwave Background Radiation (CMBR) temperature are considered as a result of an interaction of primordial atoms and molecules with CMBR in proto-objects moving with peculiar velocities relative to the CMBR. Expected optimistic values of $Δ T / T$ are 2x10^{-5}--2x10^{-6} $f or S S F c a u se d b y H eH$ ^+ $a t z = 20 - 30 w hi c ha r e p oss ib l er e d s hi f t so f e a r l y r e i o ni z a t i o n sce na r i o . T h e ban d w i d t h o f t h e l in es i s 0.1 - 2$ Δ $T / T l imi t in t h ee x p er im e n t i s 2 x 10$ ^{-5}$ with 6'-7' angular and 2% frequency resolution. Simulation shows that SSF may be recognized in the angular power spectrum when S/N in single frequency CMBR maps is as small as 1.17 or even something less for white noise. Such an experiment gives us a possibility to set upper limit of SSF in MM band and prepare future SSF observations.

26 pages, 6 figures