Noise in Maps of the Sun at Radio Wavelengths II: Solar Use Cases
arXiv:2506.09843 · doi:10.1007/s11207-025-02498-w
Abstract
Noise in images of strong celestial sources at radio wavelengths using Fourier synthesis arrays can be dominated by the source itself, so-called self-noise. We outlined the theory of self-noise for strong sources in a companion paper. Here we consider the case of noise in maps of radio emission from the Sun which, as we show, is always dominated by self noise. We consider several classes of science use cases for current and planned arrays designed to observe the Sun in order to understand limitations imposed by self-noise. We focus on instruments operating at decimeter and centimeter wavelengths but the results are applicable to other wavelength regimes.
21 pages, 6 figures
References in corpus (4)
- Measurement of magnetic field and relativistic electrons along a solar flare current sheet
- Microwave Spectral Imaging of an Erupting Magnetic Flux Rope: Implications for the Standard Solar Flare Model in Three Dimensions
- Variation of Solar Microwave Spectrum in the Last Half Century
- Radio and X-ray Observations of Short-lived Episodes of Electron Acceleration in a Solar Microflare