う〜む
68： 名無しのひみつ [sage] 2013/05/02(木) 22:30:07.84 ID:mNRVLODF
[1] Auroral kilometric radiation (AKR) is known to be transient emissions generated by
rapidly accelerated electrons together with sudden auroral activation in the polar magnetosphere.
In contrast, the characteristics and relationship with the auroral acceleration of rather
continuous AKR emissions are not well understood. We examine the emission using long-term data
and report that the continuous AKR emission frequency changes with universal time (UT) as
the Earth rotates, indicating that the Earth is a spin-modulated variable radio source.
The observed UT variation of AKR frequency means that the acceleration altitude changes
periodically with planetary rotation. The observations indicate that the diurnal wobble
of the tilted geomagnetic field in the solar wind flow alters the magnetosphere-ionosphere (M-I)
coupling state in the polar magnetosphere, giving rise to periodic variation of auroral
particle acceleration altitude. These observations of planetary radio wave properties provide
insight into the physics of planetary particle acceleration.
69： 名無しのひみつ [sage] 2013/05/02(木) 22:36:10.18 ID:/RDCLP8F
木製の音 でかい惑星からこんな音は怖すぎ
ttp://www.youtube.com/watch?v=e3fqE01YYWs
ttp://astrobioloblog.files.wordpress.com/2011/04/jupiter_floater.png
金星の音 怖い 心霊かよ
ttp://www.youtube.com/watch?v=LQqShj6leq8
天王星の音 音が速いね
ttp://www.youtube.com/watch?v=80Ngl2RY8sA
海王星の音 さすがだね!
ttp://www.youtube.com/watch?v=RLK57vhc_c4
70： 名無しのひみつ [] 2013/05/02(木) 23:03:40.82 ID:F+EFHc5w
