Magnetosphere Standoff Distance Solar Wind Pressure Calculator
Equatorial vacuum dipole magnetic-pressure balance radius; no magnetopause enhancement, reconnection/tilt or space-weather safety forecast.
Description
Magnetosphere Standoff Distance Solar Wind Pressure Calculator: return equatorial pressure balance radius m.
A magnetic stand-off estimate compares a dipole field's pressure with an external pressure. Geometry and the chosen dipole convention affect the result.
This tool returns equatorial pressure balance radius m. Use the stated units and model convention when interpreting these fields.
When to use this tool
Use this tool when the supplied inputs match the specific operation described above and you need a repeatable result under its stated convention.
- Check the supported input and output contract against an existing calculation or observation.
- Use the complete example to confirm units, selector spelling and result interpretation.
How to use the tool and how it works
- Enter every field in the input table using the stated units and the exact supported selector spelling where applicable.
- Run the tool. Correct input errors before interpreting an output.
- Read the result fields below; use accompanying flags and the stated sign, boundary or model convention when interpreting a number.
Raise μ0 times dipole moment squared divided by 32π² times external pressure to the one-sixth power.1
| Input field | Meaning and units | Accepted input |
|---|---|---|
| dipoleMomentAm2 | Dipole moment am2. | Finite number; greater than zero |
| externalPressurePa | External pressure pa. | Finite number; greater than zero |
| Output field | Interpretation |
|---|---|
| result | Object containing the following named result fields. |
| result.equatorialPressureBalanceRadiusM | Equatorial pressure balance radius m; use the stated units and sign convention. |
{
"input": {
"dipoleMomentAm2": 100000000000000000000,
"externalPressurePa": 1e-9
},
"output": {
"result": {
"equatorialPressureBalanceRadiusM": 5842876.275342443
}
}
}Limitations and assumptions
- This is the implemented equatorial dipole pressure-balance radius, not a global magnetosphere or surface-radiation model.
- Every declared field is required and unexpected fields are rejected. Numeric inputs must be finite; input errors are distinct from a valid false result or an explicitly qualified output.
- Extremely large inputs and nonfinite or excessively large outputs are rejected. List positions reported by the tool use zero-based indices unless stated otherwise.
Alternative or Complementary methods
Check the underlying observations, units and conventions independently before using the result in a larger workflow. The tools listed below address nearby tasks; compare their inputs and scope before substituting one for this operation.
References
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