Crossword Genius

Old artist bowled over, captivated by a limitless artistic philosophy and phenomenal vision (6,8)

Ross

I believe the answer is:

aurora borealis

I'm a little stuck... Click here to teach me more about this clue!

'phenomenal vision' is the definition.
Although both the answer and definition are singular nouns, I don't see how they can define each other.

'old artist bowled over captivated by a limitless artistic philosophy' is the wordplay.
I cannot quite understand how this works, but
'old' could be 'o' (common abbreviation eg in OE for Old English) and 'o' is found within the answer.
'artist' could be 'ra' (Royal Academician, member of Royal Academy of Arts) and 'ra' is located in the answer.
'bowled' could be 'b' (cricket abbreviation) and 'b' is located in the answer.
'over' could be 're' and 're' is located in the answer.
'a' is found in the answer.
This explanation may well be incorrect...

'and' is the link.

Can you help me to learn more?

(Other definitions for aurora borealis that I've seen before include "The northern lights" , "in the blue" .)

I've seen this clue in The Independent.
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