Tuesday, May 13, 2014

Unusual square shaped coronal hole facing Earth


The above image is from NASA's Solar Dynamics Observatory, which recently recorded the below video showing a square shaped coronal hole turning towards the Earth, to become Earth facing, from the period of about the 5th of May up until the 12th of May 2014.

Coronal holes produce high speed solar winds which shoot out from the surface of the sun. Inside this coronal hole you can see bright loops where the hot plasma outlines little pieces of the solar magnetic field sticking above the surface. Even though it was Earth facing, because it is positioning so far south on the Sun, there was less chance that the solar wind stream impacted us here on the Earth during its passing.

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As of the 13th of May here in Australia, here is the position of the above mentioned squared shaped coronal hole.

Image source: Atmospheric Imaging Assembly, NASA

The solar wind flowing from this southern coronal hole is still brushing past Earth's magnetic field. Within the next 24 hour period, NOAA reports a 40% chance of an M class flare and a 10% chance of an X class flare.

1 comment:

A Man Called Da-da said...

Does that mean the sun is un-cool?