Since we do not know what is causing this and coming up with possible solutions maybe it has something to do with this.
"A region of increased electromagnetic radiation was observed in the earth's polar cap. It is shown that this radiation is generated by streams of
low-energy...."
Source
I am just saying that there may be an increase in electromagnetic radiation during these episodes from our sun or another source.
Could be something like this...
"According to NASA, "the source of this cosmic radio background remains a mystery". It's not primordial stars, it's not any known radio source,
and in fact, the problem here is that there is "not enough radio galaxies to account for the signal". In other words, nothing in the known cosmos is
capable of producing this deafening sound. University of Maryland at College Park's Dale Fixsen—part of NASA's ARCADE team— says, that to get
this kind of signal, "you'd have to pack [radio galaxies] into the universe like sardines. There wouldn't be any space left between one galaxy and
the next". So in more scientific terms: They don't have a flying frak about what the hell this may be."
Source
Just different ideas on what could be causing this.....