The European Low Frequency Survey
Abstract
In this paper we present the European Low Frequency Survey (ELFS), a project that will enable foregrounds-free measurements of primordial -mode polarization to a level 10 by measuring the Galactic and extra-Galactic emissions in the 5--120\,GHz frequency window. Indeed, the main difficulty in measuring the B-mode polarization comes not just from its sheer faintness, but from the fact that many other objects in the Universe also emit polarized microwaves, which mask the faint CMB signal. The first stage of this project will be carried out in synergy with the Simons Array (SA) collaboration, installing a 5.5--11 GHz coherent receiver at the focus of one of the three 3.5\,m SA telescopes in Atacama, Chile ("ELFS on SA"). The receiver will be equipped with a fully digital back-end based on the latest Xilinx RF System-on-Chip devices that will provide frequency resolution of 1\,MHz across the whole observing band, allowing us to clean the scientific signal from unwanted radio frequency interference, particularly from low-Earth orbit satellite mega-constellations. This paper reviews the scientific motivation for ELFS and its instrumental characteristics, and provides an update on the development of ELFS on SA.
Keywords
Cite
@article{arxiv.2310.16509,
title = {The European Low Frequency Survey},
author = {Aniello Mennella and Kam Arnold and Susanna Azzoni and Carlo Baccigalupi and Anthony Banday and R. Belen Barreiro and Darcy Barron and Marco Bersanelli and Sean Casey and Loris Colombo and Elena de la Hoz and Cristian Franceschet and Michael E. Jones and Ricardo T. Genova-Santos and Roger J. Hoyland and Adrian T. Lee and Enrique Martinez-Gonzalez and Filippo Montonati and Jose-Alberto Rubino-Martin and Angela Taylor and Patricio Vielva},
journal= {arXiv preprint arXiv:2310.16509},
year = {2023}
}
Comments
to appear in Proc. of the mm Universe 2023 conference, Grenoble (France), June 2023, published by F. Mayet et al. (Eds), EPJ Web of conferences, EDP Sciences