2026-10-14T16:46:53Z https://www.scidb.cn/oai

10.57760/sciencedb.Fastro.00029 2025-07-29T15:33:12Z

2025-07-29 Beam Measurements of the Stokes Parameters for the FAST 19-Beam Receiver doi:10.57760/sciencedb.fastro.00029 en The Five-hundred-meter Aperture Spherical radio Telescope (FAST) has been fully operational since 11 January 2020. We present a comprehensive analysis of the beam structure for each of the 19 feed horns on FAST’s L-band receiver across the Stokes $I$, $Q$, $U$, and $V$ parameters. Using an on-the-fly mapping pattern, we conducted simultaneous sky mapping using all 19 beams directed towards polarization calibrators J1407+2827 and J0854+2006 from 2020 to 2022. Astronomical techniques - Spectropolarimetry; Spectroscopy - Radio spectroscopy; Astronomical instrumentation - Radio observatories; Radio telescopes - Single-dish antennas Xunzhou Chen PUBLIC https://creativecommons.org/licenses/by/4.0/ dataset http://www.doi.org/10.3847/1538-3881/ada8aa Science Data Bank