Hero in MiG crashing into sun died (7)

I believe the answer is:

sigmund

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'hero' is the definition.
Both the answer and definition are singular nouns.
Perhaps they are linked in a way I don't understand?

'mig crashing into sun died' is the wordplay.
'crashing' indicates anagramming the letters.
'into' is an insertion indicator.
'died' becomes 'd'.
'mig' anagrammed gives 'igm'.
'igm' placed into 'sun' is 'sigmun'.
'sigmun'+'d'='SIGMUND'

'in' acts as a link.

Can you help me to learn more?

(Other definitions for sigmund that I've seen before include "- - Freud" , "Pioneer of 24" , "big name in psychoanalysis" , "Founder of psychoanalysis" .)

I've seen this clue in The Independent.

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