🗑️ Anonymous at Thu, 30 May 2024 06:29:16 UTC No. 16200373

>>16199778
Idk. Jupiter is 5.2 AU away from the sun, which means the solar irradiance would be 1/27th of the Earth's. The Earth's magnetic field is about 50 gauss, so the moon's field would have to be ~2 I'm guessing.

For some reason, it's stupidly hard to find exact numbers for Jupiter, Io, and Europa's magnetic fields (kikes have everything paywalled). But Jupiter's surface field is apparently way higher (10x) than Earth's, and Jupiter-Io form this insane 400,000V 3,000,000 Amp flux tube with each other. So it should be possible to find a sweet-spot planet between Io and Europa's temperature somewhere out there.

Anonymous at Thu, 30 May 2024 06:37:26 UTC No. 16200383

*Meant to say 50 uT, not gauss.

Anonymous at Thu, 30 May 2024 12:49:58 UTC No. 16200706

>>16200373
>it's stupidly hard to find exact numbers for Jupiter
This the very reason why I asked, I was unable to find even rough numbers of what the strength of Jupiter's magnetic field was or how deadly its radiation belts were at the orbital distance of the galilean moons
>sweet-spot planet between Io and Europa's temperature somewhere out there
Well I was already assuming that tidal heating would make up for a good deal of the decline in solar irradiance at jupiter's distance from the sun, I was more concerned about the ionizing radiation of its van allen belts. As in, would earth's magnetic field be sufficient to handle it or would a habitable moon need to be a super earth or a super mercury in order to have a big enough iron core to shield the surface.

Anonymous at Thu, 30 May 2024 13:03:05 UTC No. 16200722

>>16200706
Between Jupiter's fuckhuge magnetic field, Io's tidal heating, and whatever that flux tube is doing, I doubt radiation would be too much of a problem. If anything, life would just adapt to it like we did with oxygen.

Anonymous at Thu, 30 May 2024 13:24:49 UTC No. 16200755

>>16200722
> Jupiter's fuckhuge magnetic field
But that's the exact problem I'm asking about, Juipter's magnetic field does trap a lot of charged particles. Hence why the Galilean moons out to Calisto are so heavily irradiated by ionizing radiation. And I was interested in the case where life wasn't already adapted to levels of radiation that would be lethal to most terrestrial life.

Anonymous at Thu, 30 May 2024 13:35:09 UTC No. 16200769

>>16200722
Maybe something called metallic hydrogen and other solid element

Anonymous at Thu, 30 May 2024 14:26:08 UTC No. 16200819

>>16200755
Well, in any case, this article (pg. 8) shows the "plasma density" along Io's orbit path (i.e. what the planet has to shield) to be 100-900 N/cm^3. Meanwhile, Earth's Van allen belts are cited as 50-100 N/cm^3.

Also:
>Io receives about 3,600 rem (36 Sv) of ionizing radiation per day.[15]
>36 Sv: Fatal acute dose to Cecil Kelley in 1958, death occurred within 35 hours.[58]

>The ionizing radiation level at Europa's surface is equivalent to a daily dose of about 5.4 Sv (540 rem),[58] an amount that would cause severe illness or death in human beings exposed for a single Earth day (24 hours).[59]

gl on your search

Anonymous at Thu, 30 May 2024 14:39:54 UTC No. 16200838

>>16200819
Thank you /sci/borg

Anonymous at Thu, 30 May 2024 15:38:04 UTC No. 16200916

>>16200706
https://cloudflare-ipfs.com/ipfs/bafykbzacebtwp2xx2t22pqz7ws6bywhywu7nxwzqhudncy5eabdw5aubn47r6?filename=Schrijver%20C.J.%2C%20Siscoe%20G.L.%20%28eds.%29%20-%20Heliophysics_%20Plasma%20Physics%20of%20the%20Local%20Cosmos-Cambridge%20University%20Press%20%282009%29.pdf
The tables in chapter 13 should contain most of the values you need plus references to more complete books/articles. The interactions between the plasma and the planetary magnetic field are fairly complicated, so it's hard to say a priori what effects would be important for radiation shielding. As a first approximation you'd at least need a magnetic field strong enough that the magnetic pressure exceeds the plasma pressure at distances sufficiently outside the atmosphere. Chapters 10-12 of the above book should help

Anonymous at Thu, 30 May 2024 16:51:23 UTC No. 16201030

>>16200916
Any thing else I'd need to look at?

Anonymous at Fri, 31 May 2024 02:03:10 UTC No. 16201830

>>16200819
>Christoph K. Goertz, Professor of Physics and Astronomy at the University of Iowa, was killed during the shooting incident that occurred at the University of Iowa on November 1, 1991.