Daily Archives: April 1, 2014

X-1 Flare

The flare of 29 March from SDO. Click for larger. Image: SDO/NASA via SpaceRef

A pretty nice flare was emitted on 29 March 2014. The flare is an X-1 flare, think of the X class as the largest sized/intensity group of flares, other groups are named: M, C, B and A in decreasing size. The number adds a scale within the group. The X-1 is a smaller of the X group where an X-9 would be a monster flare. It would go something like this (in increasing size/intensity): M-7, M-8, M-9, X-1, X-2 and so on. Think of how earthquakes are scaled, it’s quite similar.

So this is a bigger flare, and by 02 April there should be a nice display of the Aurora at high latitudes (both poles) and possibly a sighting at mid-latitudes (where I am). Keep an eye to the sky if they are clear.

It is possible to have radio blackouts but not any the average person will notice. Ham radio operators might note a little degradation at HF frequencies.

The flare also caused some coronal dimming. The SDO captured a (really fast) video of the effect and Dean Pesnell posted it and a description at the SDO blog. Very cool!

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