Archive

Posts Tagged ‘PAMELA’

UNH To Analyze “Bellwether” Solar Event Data From European Satellite


DURHAM, N.H. — When the sun launched a moderate, or M-class, solar flare May 17, 2012, it was still one of the largest eruptions seen since late January when our star began to rouse from an anomalously long quiet period. But the event was not just an additional solar wake-up call; it produced something that has the solar physics community puzzled and scientists from the University of New Hampshire poised to analyze a singular dataset gathered during the event by a European satellite called PAMELA – short for Payload for Antimatter Matter Exploration and Light-nuclei Astrophysics.

The puzzle is this: The solar event created what is known as a ground-level enhancement (GLE), which is a blast of high-energy particles registered by ground stations on Earth after a very large solar flare and/or another explosive mechanism known as a coronal mass ejection (CME). The May 17 GLE lit up ground stations (neutron monitors) all over the world for the first time in nearly six years, but given the stature, or lack thereof, of the solar explosions, there should have been no GLE at all.

Full Story: http://www.eos.unh.edu/news/indiv_news.shtml?NEWS_ID=1312