What is the lower limit of a coronal mass ejection?
No, as ‘coronal mass ejection’ is defined ambiguously and refers to an event that is not physically bound to some exact limit and therefore cannot have an undisputable lowest limit value, in the mathematical sense, in any parameter.
For example, the Oxford dictionary states:
“
coronal mass ejection
Noun - Astronomy
An event in which a large cloud of energetic and highly magnetized plasma erupts from the solar corona into space, causing radio and magnetic disturbances on the earth.
“
Clearly, any limit, if fixed to some exact value of mass, flux, duration, etc., would have to be fixed arbitrarily.
As a thought exercise, consider if someone came along and presented you such a ‘lower limit’.
You, or a third party, can respond with: “well what about the situation where an event occurs just one electron (or one Planck second, etc.) below such a limit? Would that be considered a CME or not?”