Abstract
Measurements of the 2.7 K CMB radiation provide the most stringent constraints on cosmological models. The power spectra of the temperature anisotropies and the E-mode polarization of the CMB are explained well by the inflationary paradigm. The next generation of CMB experiments aim at providing the most direct evidence for inflation through the detection of B-modes in the CMB polarization, presumed to have been caused by gravitational waves generated during inflation. B-mode polarization signals are very small (~10–8 K) compared with the temperature anisotropies (~10–4 K). Systematic effects in CMB telescopes can cause leakage from temperature anisotropy into polarization. Bolometric interferometry is a novel approach to measuring this small signal with lower leakage. Subdividing the frequency passband of a Fizeau interferometer would mitigate the problem of “fringe smearing.” The sub-band splitting method described here is general and can be applied to broadband Fizeau interferometers across the electromagnetic spectrum.
This is a preview of subscription content, log in via an institution to check access.
Access this chapter
Tax calculation will be finalised at checkout
Purchases are for personal use only
References
Takahashi, Y.D., Ade, P.A.R., Barkats, D., et al.: Characterization of the BICEP telescope for high-precision cosmic microwave background polarimetry, ApJ 711, 1141 (2010)
Hinderks, J.R., Ade, P., Bock, J., et al.: QUaD: a high-resolution cosmic microwave background polarimeter, ApJ 692, 1221 (2009)
Bock, J., Aljabri, A., Amblard, A., et al.: Study of the Experimental Probe of Inflationary Cosmology (EPIC)-Intemediate Mission for NASA's Einstein Inflation Probe, ArXiv e-prints (2009)
Bock, J., Church, S., Devlin, M., et al.: Task Force on Cosmic Microwave Background Research, ArXiv Astrophysics e-prints (2006)
Hu, W., Hedman, M.M., Zaldarriaga, M.: Benchmark parameters for CMB polarization experiments, Phys. Rev. D 67, 043004 (2003)
Charlassier, R., Hamilton, J., Br´eelle, E., et al.: An efficient phase-shifting scheme for bolometric additive interferometry, A&A, 497, 963 (2009)
Traub, W.A.: Beam Combination and Fringe Measurement, In: Lawson, P.R. (ed.) Principles of Long Baseline Stellar Interferometry, chapter 3, vol. 31 (2000)
Hyland, P., Follin, B., Bunn, E.F.: Phase shift sequences for an adding interferometer, MNRAS 393, 531 (2009)
Acknowledgements
SSM and AD acknowledge a generous grant for Astronomy from IIT Indore.
Author information
Authors and Affiliations
Corresponding author
Editor information
Editors and Affiliations
Rights and permissions
Copyright information
© 2021 Springer Nature Singapore Pte Ltd.
About this paper
Cite this paper
Malu, S.S., Datta, A., Timbie, P. (2021). Fizeau Interferometers: Extracting Sub-band Information. In: Das, N.R., Sarkar, S. (eds) Computers and Devices for Communication. CODEC 2019. Lecture Notes in Networks and Systems, vol 147. Springer, Singapore. https://doi.org/10.1007/978-981-15-8366-7_52
Download citation
DOI: https://doi.org/10.1007/978-981-15-8366-7_52
Published:
Publisher Name: Springer, Singapore
Print ISBN: 978-981-15-8365-0
Online ISBN: 978-981-15-8366-7
eBook Packages: EngineeringEngineering (R0)