Latitudinal Distribution of Sunspot and North-South Asymmetry Revisited
The solar magnetic field plays a central role in the field of solar research, both theoretically and practically. Sunspots are an important observational constraint since they are considered a discernable tracer of emerged magnetic flux tubes, providing the longest running records of solar magnetic...
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| Format: | Article |
| Language: | English |
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The Korean Space Science Society
2018-06-01
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| Series: | Journal of Astronomy and Space Sciences |
| Subjects: | |
| Online Access: | http://ocean.kisti.re.kr/downfile/volume/kosss/OJOOBS/2018/v35n2/OJOOBS_2018_v35n2_55.pdf |
| _version_ | 1797331598811594752 |
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| author | Heon-Young Chang |
| author_facet | Heon-Young Chang |
| author_sort | Heon-Young Chang |
| collection | DOAJ |
| description | The solar magnetic field plays a central role in the field of solar research, both theoretically and practically. Sunspots are an important observational constraint since they are considered a discernable tracer of emerged magnetic flux tubes, providing the longest running records of solar magnetic activity. In this presentation, we first review the statistical properties of the latitudinal distribution of sunspots and discuss their implications. The phase difference between paired wings of the butterfly diagram has been revealed. Sunspots seem to emerge with the exponential distribution on top of slowly varying trends by periods of ~11 years, which is considered multiplicative rather than additive. We also present a concept for the center-of-latitude (COL) and its use. With this, one may sort out a traditional butterfly diagram and find new features. It is found that the centroid of the COL does not migrate monotonically toward the equator, appearing to form an `active latitude`. Furthermore, distributions of the COL as a function of latitude depend on solar activity and the solar North-South asymmetry. We believe that these findings serve as crucial diagnostic tools for any potential model of the solar dynamo. Finally, we find that as the Sun modulates the amount of observed galactic cosmic ray influx, the solar North-South asymmetry seems to contribute to the relationship between the solar variability and terrestrial climate change. |
| first_indexed | 2024-03-08T07:37:48Z |
| format | Article |
| id | doaj.art-16333fdf749f4eee919e45b9ac324a7e |
| institution | Directory Open Access Journal |
| issn | 2093-5587 2093-1409 |
| language | English |
| last_indexed | 2024-03-08T07:37:48Z |
| publishDate | 2018-06-01 |
| publisher | The Korean Space Science Society |
| record_format | Article |
| series | Journal of Astronomy and Space Sciences |
| spelling | doaj.art-16333fdf749f4eee919e45b9ac324a7e2024-02-02T18:16:27ZengThe Korean Space Science SocietyJournal of Astronomy and Space Sciences2093-55872093-14092018-06-01352556610.5140/JASS.2018.35.2.55Latitudinal Distribution of Sunspot and North-South Asymmetry RevisitedHeon-Young Chang0Department of Astronomy and Atmospheric Sciences, Kyungpook National University, Daegu 41566, KoreaThe solar magnetic field plays a central role in the field of solar research, both theoretically and practically. Sunspots are an important observational constraint since they are considered a discernable tracer of emerged magnetic flux tubes, providing the longest running records of solar magnetic activity. In this presentation, we first review the statistical properties of the latitudinal distribution of sunspots and discuss their implications. The phase difference between paired wings of the butterfly diagram has been revealed. Sunspots seem to emerge with the exponential distribution on top of slowly varying trends by periods of ~11 years, which is considered multiplicative rather than additive. We also present a concept for the center-of-latitude (COL) and its use. With this, one may sort out a traditional butterfly diagram and find new features. It is found that the centroid of the COL does not migrate monotonically toward the equator, appearing to form an `active latitude`. Furthermore, distributions of the COL as a function of latitude depend on solar activity and the solar North-South asymmetry. We believe that these findings serve as crucial diagnostic tools for any potential model of the solar dynamo. Finally, we find that as the Sun modulates the amount of observed galactic cosmic ray influx, the solar North-South asymmetry seems to contribute to the relationship between the solar variability and terrestrial climate change.http://ocean.kisti.re.kr/downfile/volume/kosss/OJOOBS/2018/v35n2/OJOOBS_2018_v35n2_55.pdfsunsunspotsbutterfly diagramnorth-south asymmetry |
| spellingShingle | Heon-Young Chang Latitudinal Distribution of Sunspot and North-South Asymmetry Revisited Journal of Astronomy and Space Sciences sun sunspots butterfly diagram north-south asymmetry |
| title | Latitudinal Distribution of Sunspot and North-South Asymmetry Revisited |
| title_full | Latitudinal Distribution of Sunspot and North-South Asymmetry Revisited |
| title_fullStr | Latitudinal Distribution of Sunspot and North-South Asymmetry Revisited |
| title_full_unstemmed | Latitudinal Distribution of Sunspot and North-South Asymmetry Revisited |
| title_short | Latitudinal Distribution of Sunspot and North-South Asymmetry Revisited |
| title_sort | latitudinal distribution of sunspot and north south asymmetry revisited |
| topic | sun sunspots butterfly diagram north-south asymmetry |
| url | http://ocean.kisti.re.kr/downfile/volume/kosss/OJOOBS/2018/v35n2/OJOOBS_2018_v35n2_55.pdf |
| work_keys_str_mv | AT heonyoungchang latitudinaldistributionofsunspotandnorthsouthasymmetryrevisited |