LoCo1: Pathfinding space based low frequency cosmology

Daniel Jacobs, Judd Bowman, Joseph Lazio, Robert Jarnot, Paul Scowen, Christopher Groppi, Richard Bradley, Ricky Astrain, Jordan Bridgeman, Owen Ma, Alex Cannady

Research output: Chapter in Book/Report/Conference proceedingConference contribution

Abstract

Recent interest in high redshift cosmology observations with the redshifted 21cm line has rekindled exploration of the VHF radio band (50-200MHz) for radio astronomy. Single antenna instruments like the ground-based EDGES and the proposed lunar orbiting DARE have the goal of characterizing the global HI signal and extracting astrophysical and cosmological information. One limitation over much of the band is strong man-made and naturally occurring interference, which DARE avoids by observing as it orbits the far side of the moon. Another advantage of space-based observing is avoidance of the ionosphere which becomes increasingly reflective at the lower end of the VHF band. Technical challenges to this type of mission include development of lower power wide-band spectrometers, better mapping of Earth originating interference, and incorporation of lessons learned from ongoing ground-based experiments. One of the main challenges faced by EDGES, observing the narrower but clean stretch of bandwidth found in Western Australia, is calibrating the spectral response of the antenna at the required 0.01dB level.

Original languageEnglish (US)
Title of host publication2014 United States National Committee of URSI National Radio Science Meeting, USNC-URSI NRSM 2014
PublisherInstitute of Electrical and Electronics Engineers Inc.
ISBN (Electronic)9781479931200
DOIs
StatePublished - Oct 16 2014
Event2014 United States National Committee of URSI National Radio Science Meeting, USNC-URSI NRSM 2014 - Boulder, United States
Duration: Jan 8 2014Jan 11 2014

Publication series

Name2014 United States National Committee of URSI National Radio Science Meeting, USNC-URSI NRSM 2014

Other

Other2014 United States National Committee of URSI National Radio Science Meeting, USNC-URSI NRSM 2014
CountryUnited States
CityBoulder
Period1/8/141/11/14

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ASJC Scopus subject areas

  • Electrical and Electronic Engineering
  • Electronic, Optical and Magnetic Materials

Cite this

Jacobs, D., Bowman, J., Lazio, J., Jarnot, R., Scowen, P., Groppi, C., Bradley, R., Astrain, R., Bridgeman, J., Ma, O., & Cannady, A. (2014). LoCo1: Pathfinding space based low frequency cosmology. In 2014 United States National Committee of URSI National Radio Science Meeting, USNC-URSI NRSM 2014 [6928133] (2014 United States National Committee of URSI National Radio Science Meeting, USNC-URSI NRSM 2014). Institute of Electrical and Electronics Engineers Inc.. https://doi.org/10.1109/USNC-URSI-NRSM.2014.6928133