Bastille Day event
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The Bastille Day Flare or Bastille Day Event was a powerful solar flare on July 14, 2000 occurring near the peak of the solar maximum.[1][2] Active region 9077 produced an X5-class flare, which caused an S3 radiation storm on Earth fifteen minutes later as energetic protons bombarded the ionosphere.[1][3] It was the biggest solar radiation event since 1989.[3] The proton event was four times more intense than any previously recorded since the launches of SOHO in 1995 and ACE in 1997.[1] The flare was followed by a full-halo coronal mass ejection.[1]
The Bastille Day event was observed by Voyager I and Voyager II, so it thus the furthest out observed solar storm.
[edit] References
- ^ a b c d "Space Radiation Storm". NASA. 2004-07-14. http://science.nasa.gov/headlines/y2000/ast14jul_2m.htm. Retrieved 2007-03-09.
- ^ Associated Press (2000-07-14). "NASA Says Solar Flare Caused Radio Blackouts". The New York Times. http://docs.newsbank.com/openurl?ctx_ver=z39.88-2004&rft_id=info:sid/iw.newsbank.com:AWNB:NYTB&rft_val_format=info:ofi/fmt:kev:mtx:ctx&rft_dat=10192EC724742FDF&svc_dat=InfoWeb:aggregated4&req_dat=0D0CB57AB53DF815. Retrieved 2007-03-09.
- ^ a b Roylance, Frank D. (2000-07-15). "Solar flare biggest since '89". Contra Costa Times. http://docs.newsbank.com/openurl?ctx_ver=z39.88-2004&rft_id=info:sid/iw.newsbank.com:AWNB:CCYB&rft_val_format=info:ofi/fmt:kev:mtx:ctx&rft_dat=1064A3E55B815DA8&svc_dat=InfoWeb:aggregated4&req_dat=0D0CB57AB53DF815. Retrieved 2007-03-09.
[edit] External links
- Views of the 'Bastille Day' Sun, July 2000. (pictures)
- 'Bastille Day' Flare Animations
- Propagation of Bastille Day Event to Voyagers 1 & 2
- High-Energy Ions Energized by Bastille Day 2000 Shock Bombardment
- Ulysses Observations of Solar Energetic Particles From the Bastille Day Event
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