翻訳と辞書 Words near each other ・ Aurora, Washington County, Wisconsin ・ Aurora, Waushara County, Wisconsin ・ Aurora, West Virginia ・ Aurora, Western Cape ・ Aurora, Wisconsin ・ Aurora, Zamboanga del Sur ・ Aurora-Con ・ Auroraceratops ・ Auroracetus ・ Aurorachelys ・ Auroracoin ・ Aurorae Chaos ・ Aurorae Sinus ・ Auroraflash ・ Auroral chorus ・ Auroral kilometric radiation ・ Auroran ・ Auroras Encore ・ Auroratone ・ Auroraville, Wisconsin ・ Aurorazhdarcho ・ Aurora—Oak Ridges—Richmond Hill ・ Aurore ・ Aurore (film) ・ Aurore (given name) ・ Aurore (grape) ・ Aurore (internet platform) ・ Aurore (slave ship) ・ Aurore and Aimée ・ Aurore Auteuil Dictionary Lists mini英和辞書 mini和英辞書 Webster 1913 Latin-English FOLDOC Wikipedia English ウィキペディア

翻訳と辞書　辞書検索 [ 開発暫定版 ] スポンサード リンク Auroral kilometric radiation ： ウィキペディア英語版 Auroral kilometric radiation Auroral kilometric radiation (AKR) is the intense radio radiation emitted in the acceleration zone (at a height of three times the radius of the Earth) of the polar lights. The radiation mainly comes from cyclotron radiation from electrons orbiting around the magnetic field lines of the Earth. The radiation has a frequency of between 50 and 500 kHz and a total power of between about 1 million and 10 million watts. The radiation is absorbed by the ionosphere and therefore can only be measured by satellites positioned at vast heights, such as the Fast Auroral Snapshot Explorer (FAST). According to the data of the Cluster mission, it is beamed out in the cosmos in a narrow plane tangent to the magnetic field at the source. The sound produced by playing AKR over an audio device has been described as "whistles", "chirps", and even "screams". As some other planets emit cyclotron radiation too, AKR could be used to learn more about Jupiter, Saturn, Uranus and Neptune, and to detect extrasolar planets. ==References== * 抄文引用元・出典: フリー百科事典『 ウィキペディア（Wikipedia）』 ■ウィキペディアで「Auroral kilometric radiation」の詳細全文を読む スポンサード リンク 翻訳と辞書 : 翻訳のためのインターネットリソース Copyright(C) kotoba.ne.jp 1997-2016. All Rights Reserved.