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19 April 2024 |
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Angular power spectrum of the FastICA CMB component from BEAST data | | S. Donzelli
; D. Maino
; M. Bersanelli
; J. Childers
; N. Figueiredo
; P.M. Lubin
; P.R. Meinhold
; I.J. O’Dwyer
; M.D. Seiffert
; T. Villela
; B.D. Wandelt
; C.A. Wuensche
; | | Date: |
12 Jul 2005 | | Subject: | astro-ph | | Abstract: | We present the angular power spectrum of the CMB component extracted with FastICA from the Background Emission Anisotropy Scanning Telescope (BEAST) data. BEAST is a 2.2 meter off-axis telescope with a focal plane comprising 8 elements at Q (38-45 GHz) and Ka (26-36 GHz) bands. It operates from the UC White Montain Research Station at an altitude of 3800 meters. The BEAST CMB angular power spectrum has been already calculated by O’Dwyer et.al. using only the Q band data. With two input channels FastICA returns two possible independent component. We found that one of these two is unphysical while the other is a reasonable CMB component. After a detailed calibration procedure based on Monte-Carlo (MC) simulations we extracted the angular power spectrum for the identified CMB component and found a very good agreement with the already published BEAST CMB angular power spectrum and with the WMAP data. | | Source: | arXiv, astro-ph/0507267 | | Services: | Forum | Review | PDF | Favorites | |
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