论文标题

1989- 2018

A Catalog of Bipolar Active Regions Violating the Hale Polarity Law, 1989-2018

论文作者

Zhukova, A., Khlystova, A., Abramenko, V., Sokoloff, D.

论文摘要

尽管对这种ARS的统计研究(带有深度亚光层过程的烙印)对于理解太阳能周期机制很重要,但没有具有反极性(反向区域)的双极活动区域(ARS)列表。从1989年1月1日至2018年12月31日,我们研究了8606 AR,以检测反面部地区并编译目录。使用了太阳能和地层观测站(SOHO)以及太阳能动力学观测站(SDO)数据,以及弹药光闪志数据,威尔逊山天文台目录和图纸以及USAF/NOAA太阳能区域摘要。分析了与抗头部区域鉴定有关的复杂,模棱两可的病例。制定了两个基本和四个其他标准,以识别AR为抗新的区域。基本标准假设:i)AR的主导特征必须形成反向极性的双孔,而两个极性都存在的黑子/孔; ii)必须观察到相反极性之间的磁连接。汇编了一个反引擎区域(275 AR)的目录。目录包含:NOAA编号,日期最大的日期,坐标和校正的黑子区域。还提供了倾斜和最复杂的威尔逊磁性类别。符合该标准的反面包小组的百分比比所有研究的ARS约为3.0%,这是作者的早期估计,他们对每个AR进行了单独检查:Hale和Nicholson(AP.J. 62,270,1925)和Richardson(AP.J. 62,270,1925)和Richardson(AP.J. J. J. J. J. J. 107,107,78,1948,1948,1948,1948,1948,1948,1948,1948)。以后的研究中,反引体百分比的结合可能与以下方面有关:i)提高仪器的灵敏度(考虑越来越小的两杆); ii)抗议区域鉴定的歧义。

There is no list of bipolar active regions (ARs) with reverse polarity (anti-Hale regions), although statistical investigations of such ARs (bearing the imprint of deep subphotospheric processes) are important for understanding solar-cycle mechanisms. We studied 8606 ARs from 1 January 1989 to 31 December 2018 to detect anti-Hale regions and to compile a catalog. The Solar and Heliospheric Observatory (SOHO) and the Solar Dynamics Observatory (SDO) data, as well as the Debrecen Photoheliographic Data, the Mount Wilson Observatory catalog and drawings, and the USAF/NOAA Solar Region Summary were used. Complex, ambiguous cases related to anti-Hale region identification were analyzed. Two basic and four additional criteria to identify an AR as an anti-Hale region were formulated. The basic criteria assume that: i) dominating features of an AR have to form a bipole of reverse polarity with sunspots/pores of both polarities being present; ii) magnetic connections between the opposite polarities has to be observed. A catalog of anti-Hale regions (275 ARs) is compiled. The catalog contains: NOAA number, date of the greatest total area of sunspots, coordinates, and corrected sunspot area for this date. The tilt and the most complex achieved Mount Wilson magnetic class are also provided. The percentage of anti-Hale groups meeting the proposed criteria is ~3.0% from all studied ARs, which is close to early estimations by authors who had examined each AR individually: ~2.4% by Hale and Nicholson (Ap.J. 62, 270, 1925) and ~3.1% by Richardson (Ap.J. 107, 78, 1948). The enchancement of the anti-Hale percentage in later research might be related to: i) increasing sensitivity of instruments (considering smaller and smaller bipoles); ii) the ambiguities in the anti-Hale region identification.

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