ASTR 1P01 Lecture Notes - Lecture 19: Sudbury Neutrino Observatory, Homestake Mine (South Dakota), Solar Wind

• School: Brock University
• Department: Astronomy
• Course: ASTR 1P01
• Professor: Bozidar Mitrovic

Document Summary

Above: a tank filled with 380,000 litres of dry cleaning fluid c2cl4. Less neutrinos were detected than what was predicted by theory. In addition to light and neutrinos the sun emits the solar-wind outflow of charged particles moving at a speed of 400km/s----800km/s: the earth"s (cid:373)ag(cid:374)etic field shields the earth fro(cid:373) solar wi(cid:374)d: The regions near the magnetic poles of the earth are unprotected and the solar wind particles can come down near magnetic poles and collide with the molecules of the atmosphere producing aurora: Aurora over iceland in 2012 (image credit and copyright: stephane vetter (nuis sacrees): the molecules in the air produce light via fluorescence. Jupiter: (the north pole of jupiter under infared exposure) Solar wind also causes the tail of a comet to point away from the sun: Ion tail: small charged molecules (ions) are pushed away from the sun by solar wind and by the radiation pressure (photons have momentum)