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Pi 2 pulsations: High latitude results
Planetary and Space Science, 1982Abstract A review of recent experimental results from studies of high latitude Pi 2 pulsations indicates that these pulsations are fundamentally related to the initiation of the auroral breakup and substorm. At high latitudes, the Pi 2's show their peak intensities in the region where the breakup begins and appear to remain in this region after the ...
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Propagation of Pi 2 micropulsations through the ionosphere
Journal of Geophysical Research, 1965Until recently it has been thought that Pi 2 activity was observed simultaneously over the earth's surface [Angenheister, 1912; Grenet et al., 1954]. The first strong evidence that this was not the case was presented by Herron [1964], who observed sizeable phase shifts of the order of seconds between stations separated by hundreds of kilometers along ...
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Search for the decay $\tau^ - \to 3 \pi^ - 2 \pi^ + 2 \pi^0 \nu_ tau $
Physical Review D: Particles, Fields, Gravitation and Cosmology, 2006Barlow, Roger +3 more
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Tafel der Kreisfunktionen $$\sin {\frac{x\pi}{2}}, \cos {\frac{x\pi}{2}}$$
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