Solar cycle properties and surface-field reconstruction from sunspot observations by Schwabe

施瓦贝根据太阳黑子观测进行太阳周期特性和地表场重建

• 批准号: 232231278
• 负责人: Dr. Rainer Arlt
• 金额: --
• 依托单位: Leibniz-Institut für Astrophysik Potsdam (AIP)
• 依托单位国家: 德国
• 项目类别: Research Grants
• 财政年份: 2013
• 资助国家: 德国
• 起止时间: 2012-12-31 至 2018-12-31
• 项目状态: 已结题
• 来源: https://gepris.dfg.de/gepris/projekt/232231278?language=en
• 关键词: Solar; cycle; properties; surface; field

A continuous record of detailed information on sunspot groups has been available since 1874. The understanding of the solar cycle would greatly benefit from a longer time series into the past. We propose to use newly available sunspot positions and areas measured on the original drawings made by S.H. Schwabe in 1825-1867. The observations were digitized by the PI in 2009. The individual positions and areas of the sunspots as well as their groupings in active regions were obtained within DFG project. We propose to test and improve empirical relations for the reconstruction of magnetic maps with these data. Such maps as well as time series for the total and open flux will be reconstructed using a surface flux transport model. We will also study the north-south asymmetry from the spot data, possible phase shifts in the cycles on the northern against the southern hemisphere, and sunspot decay leading to turbulent diffusion values in the solar atmosphere. Another goal is the determination of the differential rotation of the Sun in the 19th century.

自1874年以来，太阳黑子群的详细信息一直在持续记录。了解太阳周期将大大受益于更长的时间序列到过去。我们建议使用新的太阳黑子位置和面积测量的原始图纸由S.H.施瓦贝在1825-1867年。PI于2009年将观察结果数字化。在DFG项目中，获得了太阳黑子的位置、面积以及黑子在活动区的分组。我们建议用这些数据来测试和改进重建磁图的经验关系。将使用一个表面通量传输模型重建这些地图以及总通量和开放通量的时间序列。我们还将研究从现场数据的南北不对称性，可能的相位变化的周期对南半球的北方，和太阳黑子衰减导致湍流扩散值在太阳大气中。另一个目标是确定太阳在世纪的差异旋转。

项目成果

Sunspot positions, areas, and group tilt angles for 1611-1631 from observations by Christoph Scheiner

• DOI: 10.1051/0004-6361/201629000
• 发表时间: 2016-11-01
• 期刊: ASTRONOMY & ASTROPHYSICS
• 影响因子: 6.5
• 作者: Arlt, R.;Pavai, V. Senthamizh;Spada, F.
• 通讯作者: Spada, F.

Sunspot areas and tilt angles for solar cycles 7-10

太阳黑子区域和太阳周期的倾斜角度 7-10

• DOI: 10.1051/0004-6361/201527080
• 发表时间: 2015
• 期刊: arXiv: Solar and Stellar Astrophysics
• 作者: Senthamizh Pavai;Dasi-Espuig;Krivova;Solanki
• 通讯作者: Solanki

Wings of the butterfly : sunspot groups for 1826–2015

• DOI: 10.1051/0004-6361/201629533
• 发表时间: 2017-03
• 期刊: Astronomy and Astrophysics
• 影响因子: 6.5
• 作者: R. Leussu;I. Usoskin;V. S. Pavai;A. Diercke;R. Arlt;C. Denker;K. Mursula

Sunspot group tilt angle measurements from historical observations

• DOI: 10.1016/j.asr.2016.03.002
• 发表时间: 2016-03
• 期刊: Advances in Space Research
• 影响因子: 2.6
• 作者: V. S. Pavai;R. Arlt;A. Diercke;C. Denker;J. Vaquero