Uploaded by djxatlanta on 3 Nov 2010
An active region just over the sun's eastern horizon is crackling with solar flares and hurling material high above the stellar surface. This extreme ultraviolet movie from NASA's Solar Dynamics Observatory shows the strongest blast so far, a C4-class event at 1220 UT on Nov. 3rd, 2010.
Although the blast site is hidden behind the limb, the eruption nevertheless yielded enough x-radiation to produce a wave of ionization in Earth's upper atmosphere. Researcher Rob Stammes recorded a sudden ionospheric disturbance (SID) when the wave passed over his lab in Laukvik, Norway. Learn more about SIDs here: http://solar-center.stanford.edu/SID/
The source of this activity is an old friend--a sunspot and magnetic filament jointly known as "active region 1112." The ensemble put on a good show in mid-October when it first crossed the face of the sun. For the past two weeks, however, it has been transiting the far side, out of sight. Today's eruption may be read as "hello, I'm back." The sun's rotation is bringing the region around for a second pass; readers with solar telescopes are encouraged to monitor the eastern limb for its emergence in the days ahead.
credit: NASA/SDO
source: http://spaceweather.com/
Although the blast site is hidden behind the limb, the eruption nevertheless yielded enough x-radiation to produce a wave of ionization in Earth's upper atmosphere. Researcher Rob Stammes recorded a sudden ionospheric disturbance (SID) when the wave passed over his lab in Laukvik, Norway. Learn more about SIDs here: http://solar-center.stanford.edu/SID/
The source of this activity is an old friend--a sunspot and magnetic filament jointly known as "active region 1112." The ensemble put on a good show in mid-October when it first crossed the face of the sun. For the past two weeks, however, it has been transiting the far side, out of sight. Today's eruption may be read as "hello, I'm back." The sun's rotation is bringing the region around for a second pass; readers with solar telescopes are encouraged to monitor the eastern limb for its emergence in the days ahead.
credit: NASA/SDO
source: http://spaceweather.com/
0 comments:
Post a Comment