Eruptions from the Far-Side: New Global Views of the Sun

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AGU 2010 Fall Meeting - Press Conference

New observations of the Sun indicate that the search for the factors that play a role in the initiation and evolution of eruptive and explosive events, sought after for improved space-weather forecasting, requires knowledge of much, if not all, of the solar surface field. The combination of observations from two NASA missions, the Solar Dynamics Observatory (SDO) and the Solar TErrestrial RElations Observatory (STEREO) enable us to view much of the solar surface and atmosphere simultaneously and continuously for the first time. These near-global observations often show long-distance interactions between magnetic areas that exhibit flares, eruptions, and frequent minor forms of activity. These interactions were previously suspected, but have never been observed until now. We analyzed a series of flares, filament eruptions, coronal mass ejections, and related events which occurred on 1--2 August 2010. These events extended over a full hemisphere of the Sun, only two-thirds of which is visible from the Earth's perspective.

Karel Schrijver
Research Scientist, Lockheed Martin, Palo Alto, California, USA;
Alan Title
SDO AIA principal investigator, Professor of Physics, Stanford University and Senior Fellow, Lockheed Martin Advanced Technology Center, Palo Alto, California, USA.
Madhulika Guhathakurta
SDO program scientist, NASA Headquarters, Washington DC, USA;
Rodney Viereck
Chief, Space Weather Services Branch, NOAA Space Weather Prediction Center, Boulder, Colorado, USA.

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