Astronomy and Astrophysics – Astrophysics – Instrumentation and Methods for Astrophysics
Scientific paper
2010-06-16
Astronomy and Astrophysics
Astrophysics
Instrumentation and Methods for Astrophysics
4 pages, 2 figures. Proceedings for the "45th Rencontres de Moriond" - Cosmology session, La Thuile (Val d'Aosta, Italy), Marc
Scientific paper
Several on-going and future experiments use a Stokes polarimeter (i.e. a rotating wave plate followed by a steady polarizer and by an unpolarized detector) to measure the small polarized component of the Cosmic Microwave Background. The expected signal is typically evaluated using the Mueller formalism. In this work we carry-out the signal evaluation taking into account the temperatures of the different optical devices present in the instrument, their non- idealities, multiple internal reflections, and reflections between different optical components. This analysis, which exploits a new description of the radiation transmitted by a half wave plate, can be used to optimize the experimental setup as well as each of its optical components. We conclude with an example of application of our analysis, studying a cryogenic polarization modulator developed for detecting the interstellar dust polarization.
de Bernardis Paolo
Salatino Maria
No associations
LandOfFree
On Stokes polarimeters for high precision CMB measurements and mm Astronomy measurements does not yet have a rating. At this time, there are no reviews or comments for this scientific paper.
If you have personal experience with On Stokes polarimeters for high precision CMB measurements and mm Astronomy measurements, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and On Stokes polarimeters for high precision CMB measurements and mm Astronomy measurements will most certainly appreciate the feedback.
Profile ID: LFWR-SCP-O-100674