Are pandemics linked to solar activity?

From 2017-2020 solar activity was at historically low levels.

Pandemics possibly are triggered by cosmic rays from space and/or the sun that cause increased mutations in viruses. This paper links mutagenic X-rays from the Sun to Influenza pandemics, and another recent paper claims other types of viral pandemics are linked to cosmic rays from outside of the solar system.

A plausible mechanism is given here:

"During the solar minimum the effect of the solar magnetic field reduces and cosmic rays, the high energy particles from outer space and extra galactic sources, reach the atmosphere. These particles collide with the atoms on the upper part of the atmosphere and results in secondary particles which shower on the Earth. This activity is more on the night side of the Earth. Bats and other nocturnal animals are reservoirs of many types of viruses. Since they are nocturnal there is more chance of exposure to secondary rays during night time. Moreover, the wings of bats are membranous and entirely different from the wings of birds. The exposure to cosmic ray shower can cause mutation of viruses in bats and other animals."

The Sun’s magnetic field goes through an 11 year cycle, and from 1955 to 2007, 4 out of 5 of these cycles were exceptionally strong. There were no months of single-digit average of observed sunspots per day (which correlate with the Sun’s magnetic field strength) during those 5 Solar cycles. Since 2008, however, the Sun’s magnetic field has been exceptionally weak, culminating with a 35-month stretch (November 2017 - September 2020) of single-digit averages of sunspots per day. Again, from 1955-2007 there were 624 consecutive months of double and often triple-digit daily sunspot averages, and then 35 straight months of single-digit daily sunspot averages.

Another article hypothesizes that ELF fields, which also are connected to sunspots and solar cycles, also play a role:

[O]ne can imagine the following scenario. Changes in the ELF electromagnetic background, caused by the increased flux of cosmic rays due to unusually deep sunspot minimum, can cause abnormal movements of the population of bats and affect the time of their arrival and departure. Delayed arrival or departure and longer travel times can increase the population of bats in some areas, thereby increasing competition for limited food supplies, and can also increase the likelihood of interspecies transmission of the virus. Besides, increased level of irradiation increases genetic recombination rates, as was demonstrated in laboratories during the 1950s and 1960s. Finally, under the influence of these circumstances, the new coronavirus successfully recombined and caused the Covid-19 pandemic.

All this seems very plausible to me, but I have heard almost nothing about it compared to the other “Covid origin” narratives (wet market, lab leak).