喬伊定律 (天文學)
喬伊定律（Joy's Law）在天文學中是描述太陽黑子傾斜的傾向。即前導黑子會比後隨黑子更靠近太陽的赤道，並且隨著緯度的增加，其傾斜越大[1][2][3][4]。喬伊定律為太陽發電機行動中的"阿爾法效應"提供了觀測上的支援[5]。這個定律是以阿爾弗雷德·哈裡森·喬伊的名字命名。
參考資料
- ^ Hale GE, Ellerman F, Nicholson SB, Joy AH. The magnetic polarity of sun-spots. Astrophysical Journal. 1919, 49: 153. Bibcode:1919ApJ....49..153H. doi:10.1086/142452.
- ^ Wang, Y.-M.; Sheeley, N. R., Jr. Average properties of bipolar magnetic regions during sunspot cycle 21. Solar Physics. 1989, 124: 81–100. Bibcode:1989SoPh..124...81W. doi:10.1007/BF00146521.
- ^ D'Silva S. Joy's Law and limits on the magnetic field strength at the bottom of the convection zone.. The solar cycle; Proceedings of the National Solar Observatory/Sacramento Peak 12th Summer Workshop, ASP Conference Series (ASP: San Francisco). 1992, 27: 168. 1992ASPC...27..168D.
- ^ Tian L, Bao S, Zhang H, Wang H. Relationship in sign between tilt and twist in active region magnetic fields]. Astronomy and Astrophysics. 2001, 374 (1): 294–300. Bibcode:2001A&A...374..294T. doi:10.1051/0004-6361:20010701
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- ^ NASA/Marshall Solar Physics. solarscience.msfc.nasa.gov. [2015-12-10]. （原始內容存檔於2021-02-11）.
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