Solar Wind and Comet Atlas

5 Apr 2020

At https://spaceweather.com (2nd April 2020) Comet Atlas again ...

   ... it has now sprouted a tail. It is still too dim to see with the naked eye but as it gets closer to the Sun  later in the month, this might change.

At https://phys.org/news/2020-04-density-fluctuations-solar-based-iii.html ... (see also https://doi.org/10.3847/1538-4365/ab65bd ) ... Type III bursts are among the strongest radio signals routinely observed by instruments (in space and on the earth). They are generated via plasma emissions when beams of spectrathermal electrons interact with the ambient plasma, triggering radio emissions at the plasma frequency - or at its second harmonic. As electron beams propagate outward from the Sun radio emissions are generated, at progressively lower frequencies corresponding to a decrease in solar wind density. Type III bursts also have radio sources that lie at considerably large radial distances than predicted by electron density models.