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Yadobler t1_je4c52i wrote

Reply to comment by ForgottenPercentage in Aurora Australis, New Zealand {OC} (1500x1000) by william_patino

But does CME happen without solar flares?

If so then seeing solar flares (which you can only see if it's facing the earth) is a good enough guage to approximate if AA or AB is happening.

Or in the contrapositive, no solar flare -> no AA

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ForgottenPercentage t1_je4s5r8 wrote

CMEs can occur without solar flares although most large CMEs coincide with solar flares. It's not a well understood phenomenon.

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