Moreton wave
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Animation of a Moreton wave which occurred on December 6, 2006
A Moreton wave is a kind of shock wave on the Sun's chromosphere. Described as a kind of solar "tsunami", they are generated by solar flares. They are named for American astronomer Gail Moreton, who first reported their existence.
Moreton waves propagate at a speed of 500-1500 km/s, and occur where a coronal MHD fast-mode weak shock wave intersects the chromosphere. Moreton waves can be observed primarily in the Hα band.[1]
[edit] References
- ^ N. Narukage, et al (2004). "Moreton waves observed at Hida Observatory" (PDF). Proceedings IAU Symposium (223): 367-370. DOI:10.1017/S1743921304006143. Retrieved on 2006-12-11.
[edit] External links
- Definition at the Encyclopedia of Astrobiology, Astronomy and Space flight
- Space.com article mentioning Moreton waves
- Animated picture of a Moreton wave
- Moreton waves and coronal waves The Astrophysical Journal, 572:L99–L102, 2002 June 10.
- EVIDENCE OF EIT AND MORETON WAVES IN NUMERICAL SIMULATIONS at Montana State University.
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| Structure: Solar Core - Radiation Zone - Convection Zone |
| Atmosphere - Photosphere - Chromosphere - Transition region - Corona |
| Extended Structure: Termination Shock - Heliosphere - Heliopause - Heliosheath - Bow Shock |
| Solar Phenomena: Sunspots - Faculae - Granules - Supergranulation - Solar Wind - Spicules |
| Coronal loops - Solar Flares - Solar Prominences - Coronal Mass Ejections |
| Moreton Waves - Coronal Holes |
| Other: Solar System - Solar Variation - Solar Dynamo - Heliospheric Current Sheet - Solar Radiation - Solar Eclipse |
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