\u4eca\u56de\u306f\u3001\u540d\u53e4\u5c4b\u5927\u5b66\u306e\u5c71\u672c\u548c\u5f18\u5148\u751f\u3092\u304a\u8fce\u3048\u3057\u3066\u30c6\u30a3\u30fc\u30bf\u30a4\u30e0\u30bb\u30df\u30ca\u30fc\u3092\u958b\u50ac\u3057\u307e\u3059\u3002
\u98df\u5f8c\u306e\u30c6\u30a3\u30fc\u30bf\u30a4\u30e0\u3068\u3057\u3066\u662f\u975e\u53c2\u52a0\u4e0b\u3055\u3044\u3002
\u3000<\/p>\n\n\n\n
<\/p>\n\n\n\n
\u3010 \u984c\u3000\u76ee \u3011\u3000\u5730\u7403\u78c1\u6c17\u570f\u30d7\u30e9\u30ba\u30de\u306b\u304a\u3051\u308b\u30d7\u30ed\u30c8\u30f3\u4f4d\u76f8\u7a7a\u9593\u5bc6\u5ea6\u306e\u7a7a\u9593\u52fe\u914d\u306b\u3088\u3063\u3066\u52b1\u8d77\u3059\u308b\u5727\u7e2e\u6027\u8d85\u4f4e\u5468\u6ce2\u6ce2\u52d5<\/p>\n\n\n\n
\u3010 \u8a71\u3057\u624b \u3011\u3000\u5c71\u672c\u548c\u5f18\u3000\u540d\u53e4\u5c4b\u5927\u5b66\u5b87\u5b99\u5730\u7403\u74b0\u5883\u7814\u7a76\u6240\uff08ISEE\uff09<\/p>\n\n\n\n
\u3010 \u65e5\u3000\u6642 \u3011\u30002024\u5e749\u67084\u65e5\uff08\u6c34\uff0913:00 \uff5e 13:30 <\/p>\n\n\n\n
\u3010 \u5834\u3000\u6240 \u3011\u3000\u30cf\u30a4\u30d6\u30ea\u30c3\u30c9\uff08\u5bfe\u9762\uff1aNIFS\u7814\u7a76\u68dfI-401\u30bb\u30df\u30ca\u30fc\u5ba4\u3001\u30aa\u30f3\u30e9\u30a4\u30f3\uff1aMS teams\uff09<\/p>\n\n\n\n
\u3010 \u5185\u3000\u5bb9 \u3011\u3000\u5730\u7403\u5468\u8fba\u306e\u5b87\u5b99\u7a7a\u9593\uff08\u78c1\u6c17\u570f\uff09\u3067\u306f\u3001\u30c8\u30ab\u30de\u30af\u306b\u9589\u3058\u8fbc\u3081\u3089\u308c\u305f\u9ad8\u6e29\u30d7\u30e9\u30ba\u30de\u4e2d\u3067\u69d8\u3005\u306a\u5fae\u8996\u7684\u4e0d\u5b89\u5b9a\u6027\u304c\u751f\u3058\u308b\u3053\u3068\u3068\u540c\u69d8\u306b\u3001\u5730\u7403\u306e\u56fa\u6709\u78c1\u5834\u4e2d\u306b\u9589\u3058\u8fbc\u3081\u3089\u308c\u305f\u30ea\u30f3\u30b0\u30ab\u30ec\u30f3\u30c8\u7c92\u5b50\u306e\u30d7\u30e9\u30ba\u30de\u4e0d\u5b89\u5b9a\u6027\u306b\u3088\u3063\u3066\u52b1\u8d77\u3059\u308b\u6ce2\u52d5\u304c\u89b3\u6e2c\u3055\u308c\u308b\u3002\u8fd1\u5e74\u3067\u306f\u3001NASA\u306eVan Allen Probes\u885b\u661f\u3084JAXA\u306e\u300c\u3042\u3089\u305b\u300d\u885b\u661f\u306b\u3088\u308b\u30ea\u30f3\u30b0\u30ab\u30ec\u30f3\u30c8\u7c92\u5b50\u306e\u305d\u306e\u5834\u89b3\u6e2c\u304c\u5145\u5b9f\u3057\u3066\u304d\u305f\u3053\u3068\u3067\u3001\u7c92\u5b50\u306e\u901f\u5ea6\u5206\u5e03\u306e\u89b3\u6e2c\u30c7\u30fc\u30bf\u3092\u3075\u307e\u3048\u305f\u904b\u52d5\u8ad6\u52b9\u679c\u3092\u542b\u3080\u30d7\u30e9\u30ba\u30de\u4e0d\u5b89\u5b9a\u6027\u306e\u89e3\u660e\u304c\u9032\u3081\u3089\u308c\u3066\u3044\u308b\u3002<\/p>\n\n\n\n
\u672c\u7814\u7a76\u3067\u306f\u3001\u30ea\u30f3\u30b0\u30ab\u30ec\u30f3\u30c8\u7c92\u5b50\u306e\u30c9\u30ea\u30d5\u30c8\u30fb\u30d0\u30a6\u30f3\u30b9\u904b\u52d5\u306e\u6642\u9593\u30b9\u30b1\u30fc\u30eb\u306b\u5bfe\u5fdc\u3059\u308b\u96fb\u78c1\u6ce2\u52d5\u3068\u3057\u3066\u3001\u8d85\u4f4e\u5468\u6ce2\uff08Ultra-Low Frequency\uff09\u6ce2\u52d5\u3068\u547c\u3070\u308c\u308b\u5468\u671f10-100\u79d2\u7a0b\u5ea6\u306e\u96fb\u78c1\u6ce2\u52d5\u306b\u7740\u76ee\u3057\u305f\u3002\u904e\u53bb\u306e\u7814\u7a76\u3067\u306f\u3001\u30d7\u30e9\u30ba\u30de\u03b2\u3068\u30a4\u30aa\u30f3\u306e\u6e29\u5ea6\u7570\u65b9\u6027\u304c\u9ad8\u304f\u306a\u308b\u3053\u3068\u3067\u751f\u3058\u308bdrift mirror\u4e0d\u5b89\u5b9a\u6027\u306b\u3088\u3063\u3066\u3001\u80cc\u666f\u78c1\u5834\u65b9\u5411\u306e\u78c1\u5834\u632f\u52d5\u3067\u3042\u308b\u5727\u7e2e\u6027ULF\u6ce2\u52d5\u304c\u52b1\u8d77\u3055\u308c\u308b\u3068\u8003\u3048\u3089\u308c\u3066\u304d\u305f\u3002\u4e00\u65b9\u3067\u3001drift mirror\u4e0d\u5b89\u5b9a\u6027\u306e\u6761\u4ef6\u3092\u6e80\u305f\u3055\u306a\u3044\u5834\u5408\u306b\u3082\u3001\u6ce2\u52d5\u7c92\u5b50\u76f8\u4e92\u4f5c\u7528\u306b\u3088\u3063\u3066\u5727\u7e2e\u6027ULF\u6ce2\u52d5\u304c\u52b1\u8d77\u3057\u3066\u3044\u308b\u3068\u8003\u3048\u3089\u308c\u308b\u89b3\u6e2c\u4e8b\u4f8b\u304c\u5831\u544a\u3055\u308c\u3066\u304a\u308a\uff08e.g., Takahashi et al., 2022\uff09\u3001\u305d\u308c\u3089\u306e\u5727\u7e2e\u6027ULF\u6ce2\u52d5\u306e\u52b1\u8d77\u30e1\u30ab\u30cb\u30ba\u30e0\u3092\u660e\u3089\u304b\u306b\u3059\u308b\u3053\u3068\u3092\u672c\u7814\u7a76\u306e\u76ee\u7684\u3068\u3057\u305f\u3002<\/p>\n\n\n\n
2018\u5e7411\u670819\u65e5\u306b\u300c\u3042\u3089\u305b\u300d\u885b\u661f\u3067\u89b3\u6e2c\u3055\u308c\u305f\u5727\u7e2e\u6027ULF\u6ce2\u52d5\u306b\u3064\u3044\u3066\u3001\u30a4\u30aa\u30f3\u8a08\u6e2c\u5668\u306e\u30c7\u30fc\u30bf\u3092\u7528\u3044\u3066Mager et al., (2013)\u3084Takahashi et al. (2022\uff09\u306e\u7406\u8ad6\u306b\u57fa\u3065\u304d\u6ce2\u52d5\u306e\u5468\u671f\u3084\u632f\u5e45\u306e\u8a55\u4fa1\u3092\u884c\u3063\u305f\u3068\u3053\u308d\u3001drift-compressional mode\u3068\u547c\u3070\u308c\u308b\u30b8\u30e3\u30a4\u30ed\u904b\u52d5\u8ad6\u304b\u3089\u5c0e\u304b\u308c\u308b\u56fa\u6709\u30e2\u30fc\u30c9\u3092\u89b3\u6e2c\u3057\u3066\u3044\u308b\u53ef\u80fd\u6027\u304c\u6975\u3081\u3066\u9ad8\u3044\u3053\u3068\u304c\u5206\u304b\u3063\u305f\u3002\u3053\u306e\u30e2\u30fc\u30c9\u306f\u30a4\u30aa\u30f3\u6e29\u5ea6\u306e\u7a7a\u9593\u52fe\u914d\u306b\u3088\u3063\u3066\u52b1\u8d77\u3059\u308b\u3068\u8003\u3048\u3089\u308c\u3066\u3044\u308b\u304c\uff08e.g., Crabtree et al., 2003\uff09\u3001\u672c\u7814\u7a76\u3067\u306f\u7c92\u5b50\u306e\u8ecc\u9053\u904b\u52d5\u3068\u6ce2\u306e\u5171\u9cf4\u52b9\u679c\u3067\u3042\u308b\u30c9\u30ea\u30d5\u30c8\u5171\u9cf4\u306b\u3088\u3063\u3066\u3082\u6ce2\u52d5\u304c\u6210\u9577\u3057\u3046\u308b\u3053\u3068\u3092\u4e16\u754c\u3067\u521d\u3081\u3066\u660e\u3089\u304b\u306b\u3057\u305f\u3002\u30c9\u30ea\u30d5\u30c8\u5171\u9cf4\u3068\u306f\u3001\u6ce2\u52d5\u306e\u4f4d\u76f8\u901f\u5ea6\u3068\u8377\u96fb\u7c92\u5b50\u306e\u30c9\u30ea\u30d5\u30c8\u901f\u5ea6\u304c\u4e00\u81f4\u3057\u3066\u8d77\u3053\u308b\u5171\u9cf4\u306e\u3053\u3068\u3067\u3042\u308a\u3001\u5171\u9cf4\u6761\u4ef6\u3068\u3057\u3066\u306f\u03c9-m\u03c9d=0\u304c\u305d\u308c\u306b\u3042\u305f\u308b\uff08\u03c9\u306f\u6ce2\u52d5\u306e\u89d2\u632f\u52d5\u6570\u3001m\u306f\u6ce2\u52d5\u306e\u6771\u897f\u6ce2\u6570\u3001\u03c9d\u306f\u7c92\u5b50\u306e\u30c9\u30ea\u30d5\u30c8\u89d2\u632f\u52d5\u6570\u3092\u8868\u3059\uff09\u3002\u4eca\u56de\u306e\u4e8b\u4f8b\u3067\u306f\u3001\u6ce2\u52d5\u306b\u3088\u308b\u7c92\u5b50\u30d5\u30e9\u30c3\u30af\u30b9\u306e\u5909\u8abf\u304c\u5f37\u304b\u3063\u305f20-25 keV\u306e\u30d7\u30ed\u30c8\u30f3\u304c\u5171\u9cf4\u3057\u3066\u3044\u308b\u3068\u8003\u3048\u3089\u308c\u3001\u3053\u308c\u3089\u306e\u30d7\u30ed\u30c8\u30f3\u306e\u6709\u9650\u30e9\u30fc\u30e2\u30a2\u534a\u5f84\u52b9\u679c\u3092\u7528\u3044\u3066\u89b3\u6e2c\u3055\u308c\u305f\u6ce2\u52d5\u306e\u6771\u897f\u6ce2\u6570\u3092\u63a8\u5b9a\u3057\u305f\u3068\u3053\u308d\u3001\u3053\u306e\u5171\u9cf4\u6761\u4ef6\u3092\u3088\u304f\u6e80\u305f\u3057\u3066\u3044\u305f\u3002\u307e\u305f\u3001\u6ce2\u52d5\u306e\u6210\u9577\u6761\u4ef6\u3068\u3057\u3066\u306f\u3001\u5171\u9cf4\u7c92\u5b50\u306e\u62e1\u6563\u66f2\u7dda\u306b\u6cbf\u3063\u305f\u4f4d\u76f8\u7a7a\u9593\u5bc6\u5ea6\u306e\u901f\u5ea6\u52fe\u914d\u304c\u6b63\u306b\u306a\u308b\u3053\u3068 \uff08df\/dW > 0\u3001\uff46\u306f\u4f4d\u76f8\u7a7a\u9593\u5bc6\u5ea6\u3067\uff37\u306f\u904b\u52d5\u30a8\u30cd\u30eb\u30ae\u30fc\uff09\u304c\u6c42\u3081\u3089\u308c\u308b\u3002\u3053\u306e\u4e8b\u4f8b\u3067\u306f\u3001\u30d7\u30ed\u30c8\u30f3\u4f4d\u76f8\u7a7a\u9593\u5bc6\u5ea6\u306e\u5185\u5411\u304d\u7a7a\u9593\u52fe\u914d\u306b\u3088\u3063\u3066\u6210\u9577\u6761\u4ef6\u304c\u6e80\u305f\u3055\u308c\u308b\u3053\u3068\u304c\u5206\u304b\u3063\u305f\u3002\u3053\u306e\u7a7a\u9593\u52fe\u914d\u306f\u3001\u5730\u7403\u78c1\u6c17\u570f\u306b\u6ce8\u5165\u3055\u308c\u305f\u30a4\u30aa\u30f3\u306e\u30c9\u30ea\u30d5\u30c8\u8ecc\u9053\u304c\u592a\u967d\u98a8\u5909\u52d5\u3068\u3068\u3082\u306b\u5909\u5316\u3059\u308b\u3053\u3068\u3067\u751f\u3058\u305f\u3068\u8003\u3048\u3089\u308c\u308b\u3002\u4eca\u56de\u5831\u544a\u3057\u305f\u3088\u3046\u306a\u78c1\u6c17\u570f\u306eULF\u6ce2\u52d5\u306f\u3001\u5b9f\u9a13\u5ba4\u30d7\u30e9\u30ba\u30de\u306b\u304a\u3051\u308b\u30a4\u30aa\u30f3\u6e29\u5ea6\u52fe\u914d\u4e0d\u5b89\u5b9a\u6027\u3084\u30a2\u30eb\u30f4\u30a7\u30f3\u56fa\u6709\u30e2\u30fc\u30c9\u3068\u985e\u4f3c\u3059\u308b\u7279\u5fb4\u3092\u6301\u3063\u3066\u304a\u308a\u3001\u5b9f\u9a13\u5ba4\u30d7\u30e9\u30ba\u30de\u306e\u7570\u5e38\u62e1\u6563\u3068\u540c\u69d8\u3001\u5730\u7403\u78c1\u6c17\u570f\u3067\u306e\u30ea\u30f3\u30b0\u30ab\u30ec\u30f3\u30c8\u30a4\u30aa\u30f3\u306e\u52d5\u5f84\u62e1\u6563\u3092\u5f15\u304d\u8d77\u3053\u3059\u53ef\u80fd\u6027\u304c\u3042\u308b\u3002<\/p>\n\n\n\n
\u3000\u3000<\/p>\n\n\n\n
\u3010 \u4e16\u3000\u8a71\u3000\u4eba \u3011\u3000\u6cb3\u5185 \u88d5\u4e00
<\/p>\n\n\n\n
\u3010 \u554f\u3044\u5408\u308f\u305b \u3011\u3000\u897f\u6d66 \u6b63\u6a39\uff08nishiura.masaki[at]nifs.ac.jp\uff09<\/p>\n\n\n\n
\u203b[at] \u3092@\u306b\u76f4\u3057\u3066\u304f\u3060\u3055\u3044\u3002<\/p>\n","protected":false},"author":4,"featured_media":1502,"menu_order":0,"template":"","meta":{"_acf_changed":false,"footnotes":""},"ppma_author":[342],"class_list":["post-8288","news","type-news","status-publish","has-post-thumbnail","hentry"],"acf":[],"_links":{"self":[{"href":"https:\/\/unit.nifs.ac.jp\/research\/wp-json\/wp\/v2\/news\/8288","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/unit.nifs.ac.jp\/research\/wp-json\/wp\/v2\/news"}],"about":[{"href":"https:\/\/unit.nifs.ac.jp\/research\/wp-json\/wp\/v2\/types\/news"}],"author":[{"embeddable":true,"href":"https:\/\/unit.nifs.ac.jp\/research\/wp-json\/wp\/v2\/users\/4"}],"version-history":[{"count":5,"href":"https:\/\/unit.nifs.ac.jp\/research\/wp-json\/wp\/v2\/news\/8288\/revisions"}],"predecessor-version":[{"id":11065,"href":"https:\/\/unit.nifs.ac.jp\/research\/wp-json\/wp\/v2\/news\/8288\/revisions\/11065"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/unit.nifs.ac.jp\/research\/wp-json\/wp\/v2\/media\/1502"}],"wp:attachment":[{"href":"https:\/\/unit.nifs.ac.jp\/research\/wp-json\/wp\/v2\/media?parent=8288"}],"wp:term":[{"taxonomy":"author","embeddable":true,"href":"https:\/\/unit.nifs.ac.jp\/research\/wp-json\/wp\/v2\/ppma_author?post=8288"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}