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  1. I200 高等研究院
  2. I200a 雑誌掲載論文
  3. 学術雑誌

Daniel Mögling’s Sunspot Observations in 1626–1629: A Manuscript Reference for the Solar Activity before the Maunder Minimum

http://hdl.handle.net/2237/0002001602
http://hdl.handle.net/2237/0002001602
9308ff7b-753a-4e23-a0e8-6db3092d19d7
名前 / ファイル ライセンス アクション
Hayakawa_2021_ApJ_909_194.pdf Hayakawa_2021_ApJ_909_194.pdf (915 KB)
Item type itemtype_ver1(1)
公開日 2021-11-11
タイトル
タイトル Daniel Mögling’s Sunspot Observations in 1626–1629: A Manuscript Reference for the Solar Activity before the Maunder Minimum
言語 en
著者 Hayakawa, Hisashi

× Hayakawa, Hisashi

en Hayakawa, Hisashi

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Iju, Tomoya

× Iju, Tomoya

en Iju, Tomoya

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Murata, Koji

× Murata, Koji

en Murata, Koji

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Besser, Bruno P.

× Besser, Bruno P.

en Besser, Bruno P.

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アクセス権
アクセス権 open access
アクセス権URI http://purl.org/coar/access_right/c_abf2
権利
言語 en
権利情報 © 2021. The American Astronomical Society
内容記述
内容記述 The sunspots have been observed since 1610, and their group numbers have been used for evaluating the amplitude of solar activity. Daniel Mögling recorded his sunspot observations for more than 100 days in 1626–1629 and formed a significant data set of sunspot records before the Maunder Minimum. Here we have analyzed his original manuscripts in the Universitäts- und Landesbibliothek Darmstadt to review Mögling's personal profile and observational instruments and derived the number and positions of the recorded sunspot groups. In his manuscript, we have identified 134 days with an exact sunspot group number and 3 days of additional descriptions. Our analyses have completely revised the observational dates and group numbers, added 19 days of hitherto overlooked observations, and removed 8 days of misinterpreted observations. We have also revisited the sunspot observations of Schickard and Hortensius and revised their data. These results have been compared with the contemporary observations. Moreover, we have derived the sunspot positions from his sunspot drawings and located them at 2°–23° in heliographic latitude in both solar hemispheres. Contextualized with contemporary observations, these results indicate their temporal migration to lower heliographic latitudes and emphasize their location in the declining phase of solar cycle −12 in the 1620s. Mögling's observations were probably conducted using a pinhole and camera obscura, which likely made him underestimate the sunspot group number by ≥33%–52%. This underestimation should be noted upon comparison with modern data sets.
言語 en
内容記述タイプ Abstract
出版者
言語 en
出版者 IOP publishing
言語
言語 eng
資源タイプ
資源タイプresource http://purl.org/coar/resource_type/c_6501
タイプ journal article
出版タイプ
出版タイプ VoR
出版タイプResource http://purl.org/coar/version/c_970fb48d4fbd8a85
関連情報
関連タイプ isVersionOf
識別子タイプ DOI
関連識別子 https://doi.org/10.3847/1538-4357/abdd34
収録物識別子
収録物識別子タイプ PISSN
収録物識別子 0004-637X
書誌情報 en : The Astrophysical Journal

巻 909, 号 2, p. 194, 発行日 2021-03-10
ファイル公開日
日付 2021-11-11
日付タイプ Available
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