Research articles

search articles

My Pages

Stat

Members: 3645
Articles: 2'503'724
Articles rated: 2609

23 April 2024

» arxiv » 1704.0215

Article overview

A New Limit on CMB Circular Polarization from SPIDER
J. M. Nagy ; P. A. R. Ade ; M. Amiri ; S. J. Benton ; A. S. Bergman ; J. J. Bock ; J. R. Bond ; S. A. Bryan ; H. C. Chiang ; C. R. Contaldi ; O. Dore ; A. J. Duivenvoorden ; H. K. Eriksen ; M. Farhang ; J. P. Filippini ; L. M. Fissel ; A. A. Fraisse ; K. Freese ; M. Galloway ; A. E. Gambrel ; N. N. Gandilo ; K. Ganga ; J. E. Gudmundsson ; M. Halpern ; J. Hartley ; M. Hasselfield ; G. Hilton ; W. Holmes ; V. V. Hristov ; Z. Huang ; K. D. Irwin ; W. C. Jones ; C. L. Kuo ; Z. D. Kermish ; S. Li ; P. V. Mason ; K. Megerian ; L. Moncelsi ; T. A. Morford ; C. B. Netterfield ; M. Nolta ; I. L. Padilla ; B. Racine ; A. S. Rahlin ; C. Reintsema ; J. E. Ruhl ; M. C. Runyan ; T. M. Ruud ; J. A. Shariff ; J. D. Soler ; X. Song ; A. Trangsrud ; C. Tucker ; R. S. Tucker ; A. D. Turner ; J. F. van der List ; A. C. Weber ; I. K. Wehus ; D. V. Wiebe ; E. Y. Young ;
Date:	1 Apr 2017
Abstract:	We present a new upper limit on CMB circular polarization from the 2015 flight of SPIDER, a balloon-borne telescope designed to search for $B$-mode linear polarization from cosmic inflation. Although the level of circular polarization in the CMB is predicted to be very small, experimental limits provide a valuable test of the underlying models. By exploiting the non-zero circular-to-linear polarization coupling of the HWP polarization modulators, data from SPIDER’s 2015 Antarctic flight provides a constraint on Stokes $V$ at 95 and 150 GHz from $33<ell<307$. No other limits exist over this full range of angular scales, and SPIDER improves upon the previous limit by several orders of magnitude, providing 95% C.L. constraints on $ell (ell+1)C_{ell}^{VV}/(2pi)$ ranging from 141 $mu K ^2$ to 203 $mu K ^2$ at 150 GHz for a thermal CMB spectrum. As linear CMB polarization experiments become increasingly sensitive, the techniques described in this paper can be applied to obtain stronger constraints on circular polarization.
Source:	arXiv, 1704.0215
Services:	Forum \| Review \| PDF \| Favorites

No review found.

Did you like this article?

This article or document is ...
important:
of broad interest:
readable:
new:
correct:
Global appreciation:

Note: answers to reviews or questions about the article must be posted in the forum section.
Authors are not allowed to review their own article. They can use the forum section.

browser Mozilla/5.0 AppleWebKit/537.36 (KHTML, like Gecko; compatible; ClaudeBot/1.0; +claudebot@anthropic.com)

ScienXe.org
» my Online CV
» Free

News, job offers and information for researchers and scientists:

home

contact

sitemap