2014/12/26 by Claude Mercier, C. Mercier, Prasad Subramanian +3 · 1 citation
Physics and Astronomy · #Astrophysics #Corona (planetary geology) #Halo #Ionosphere and magnetosphere dynamics #Meteorology #Noise (video) #Physics #Radio Astronomy Observations and Technology #Solar and Space Plasma Dynamics #Storm #Venus #astro-ph.SR
paper · pdf · doi:10.1051/0004-6361/201321064
Accepted for publication in Astronomy and Astrophysics. Abstract shortened, full abstract available in pdf file. Typos corrected
openalex publication_date 2014/12/26 · arxiv created 2014/12/30 · arxiv updated 2015/06/23 · openalex created_date 2025/10/10 · openalex updated_date 2026/08/05
Context. The Nançay Radioheliograph (NRH) routinely produces snapshot images of the full sun (field of view ~3 R⊙) at 6 or 10 frequencies between 150 and 450 MHz, with typical resolution 3 arcmin and time cadence 0.2 s. Combining visibilities from the NRH and from the Giant Meterwave Radio Telescope (GMRT) allows us to produce images of the sun at 236 or 327 MHz, with the same field as the NRH, a resolution as low as 20 arcsec, and a time cadence 2 s.