Magnetic Field

October 26, 2011

Anatomy of a Geomagnetic Storm – What made that great Aurora?

  Saturday, October 22, 2011, started like most any other day, lots of activity of varying size and shape was occurring on the Sun. Most people looking at the Sun that day remember the spectacular lightbulb shaped CME that occurred […]
May 23, 2011

A Prominence Breaks Free (SOHO Pick of the Week – May 20, 2011)

The STEREO (Ahead) spacecraft observed as a photogenic, solar prominence erupted and broke out into space over about 18-hour period (May 13, 2011). Prominences, notoriously unstable structures, are cooler clouds of gas that float above the Sun’s surface, tethered there […]
May 20, 2011

Connecting the Spots (SDO Pick of the Week – May 20, 2011)

An extensive series of arcs, observed in profile, can be seen making a long distance connection between two active regions (Mar. 15-17, 2011). As SDO observed in extreme ultraviolet light, a series of magnetic field lines generated a well-defined pathway […]