3I/ATLASEvidence
Evidence · 3I/ATLAS
A 3D model of the SWAN data peaks near 4 × 10^28
Re-analysing the SOHO/SWAN hydrogen coma with a three-dimensional Monte Carlo model gives a post-perihelion peak of about 4 × 10^28 molecules a second, with no outbursts and much of the water from icy grains.
What it means
Key questionWhy did 3I/ATLAS's activity and chemistry change so much across perihelion?
No answer ahead yet
Openunchanged
Part of itHow much water did 3I/ATLAS release at its peak after perihelion?
2 answers, none ahead yet
Openunchanged
Answer this evidence bears onFour to eight times 10^28 molecules a second
Supports2 for, none against
Still possibleunchanged
What it implies
- The same instrument as the high value, analysed differently, gives the low value.For: How much water did 3I/ATLAS release at its peak after perihelion?
Next steps 1
1
Run both SWAN models on the same frames
Could decidePoor odds~60 h
2score
Details
Apply the Combi and Tan hydrogen-coma models to the same SOHO/SWAN images for 6 November 2025. Agreement near 4 × 10^28 rules out the high value; agreement near 3 × 10^29 rules out the low one. Needs the SWAN team's processed frames.
Ranked by how likely each is to move the key question, for the time it takes
Sources 1
Cite it
Mysteries Department. (2026). A 3D model of the SWAN data peaks near 4 × 10^28 [Evidence EVD0DFQ55AT4QTE]. https://mysteriesdept.com/r/EVD0DFQ55AT4QTE
@misc{mysteriesdept_evd0dfq55at4qte,
title = {A 3D model of the SWAN data peaks near 4 × 10^28},
author = {{Mysteries Department}},
year = {2026},
note = {Evidence, catalog key EVD0DFQ55AT4QTE},
url = {https://mysteriesdept.com/r/EVD0DFQ55AT4QTE}
}