[aruanan]

Difficult to imagine them having the capability to blot out the sun. Excerpt - ..people from many parts of the earth witnessed a stupendous pillar of light reaching from the horizon to the highest region of the sky – the so-called axis mundi or 'cosmic axis', that defined the apparent 'centre' of the sky and blotted out the comparatively dim light of the moon, the stars, and even the sun.

It's a matter of intrinsic brightness and relative distance. The light an ophthalmologist shines in your eye is nowhere near as bright as the sun, but it's about 1 inch away from your eye shining into a dilated pupil. The sun is 93,000,000 miles away. If there are Birkeland currents surrounding the earth from a distance a fraction that of the moon, their brightness could easily overwhelm the light from the sun. The intensity of the light follows the inverse square law. Double the distance makes for 1/4 the brightness. So something of less intrinsic brightness can appear brighter than something else just by being closer. But things like lightning and arc welding produce light that is intrinsically brighter than the sun, so who knows how intense the brightness could be of Birkeland currents.

[justa-hairyape]

Believe that is called interference, not blotting. Blotting means something similar to what heavy atmospheric moisture does to sunlight. Unless they are insinuating that their will be more plasma gasses and the gasses themselves can blot out the sun similar to what happens in space nebulae. And they are incorrect to assume that putting pressure on our atmosphere will not affect climate change. New studies have shown that our atmosphere expands during low solar activity. Basically due to pressures (energy). And your linked study states that our atmosphere can drastically shrink with solar winds 10 to 100 times greater then present. That also increases pressure.