Charles, you said: "So in space, we can expect mildly separated but closely associated opposite charge streams due to the effects of magnetic and electric fields."

I had the impression that Verschuur's paper only mentioned observations of neutral filaments and closely associated electron filaments or regions. Did I overlook positive filaments or regions?*¹¹¹⁹²

I see online that free-free emission is defined this way: "An electron passing close to an ion feels an acceleration. An accelerating charge produces radiation. This is free-free emission, also called Bremsstrahlung: – Important at high temperatures, where the plasma is highly ionized. – Depends upon temperature T, ion charge Z, and electron, ion densities n e and n i." What is free-bound emission that you mention?*¹¹¹⁹⁸ I may not have time to look it up for a while.

Do you agree that Verschuur's paper makes these summary points? And do you agree with them?

(1) the cosmic microwave background is a local effect;
(2) galactic filaments contain excess electrons not produced from ionization of neutral hydrogen H I etc;
(3) neutral filaments and electron filaments are closely associated;
(4) the temperature of the filaments or clouds is only about 100 K, rather than the conventionally expected 8,000 K;
(5) halo formation involves flashes of Lyman alpha emissions.

I assume that #1 is indicated by the close association between the H I filaments and the electron filaments. Do you agree? Re #2, where would the excess electrons come from, if not from the neutral hydrogen H I? And could there be such large regions of space with neutral and negative filaments, but few positive ones? Re #5, do you have any idea what the flashes of Lyman alpha emissions in the halo (galactic halo?) would be from?

Doesn't supercritical mean above a critical temperature and pressure? What are the critical temperature and pressure of hydrogen? Is the critical temperature below 100K, which Verschuur thinks is the temperature of the filaments?*¹¹¹⁸⁶

Do you have a link to where you may already have explained all this?