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Deep dive · Geostationary · 36,000 km

Geostationary | electron weather.

The question: at 36,000 km, “killer electrons” charge spacecraft surfaces. Can we learn what pumps them up, per local-time sector, well enough to plan around?

What we found.

Measured

The calm-side machine works.

Faster solar wind reliably pumps electron flux about two days later, in all four local-time sectors — and the ordering (midnight sector strongest, noon weakest) came out exactly as we staked it in advance. That is the shape spacecraft-charging planning needs.

Not claimed

What we do not claim.

The amplitude. Direction and ordering are earned; the size of the response is not yet confirmed to our bar, and we say so rather than round up.

Open questions.

gap what closes it
the storm side is genuinely under-sampled: one satellite at one longitude sees each sector only ~6 storm-hours a day electron feeds from additional GEO longitudes — any operator’s monitor helps — or simply a longer window
amplitude confidence on the calm side a longer observing window under the same pre-registered rules

Data sources.

GOES relativistic-electron and magnetometer feeds (NOAA), solar-wind drivers from NASA OMNI/DSCOVR.

Receipts.

Every claim on this page comes from a pre-registered analysis: the hypothesis and its pass/fail rule were committed to a ledger before the data was touched, results were reproduced bit-for-bit, decoy signals ran as tripwires, and refused hypotheses stay on record. The complete gap register — data sources, refused hypotheses, and open staked predictions — is published alongside this atlas (how to read it).