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Using Sidereal Rotation Period Expressions to Calculate the Sun’s Rotation Period through Observation of Sunspots
Joint Authors
Chen, Tsung-Ching
Lih, Jiann-Shing
Chang, Tien-Tang
Yang, Chih-Hung
Lu, Ming-Chi
Liu, Chia-Ju
Ho, Ming-Chung
Source
Mathematical Problems in Engineering
Issue
Vol. 2015, Issue 2015 (31 Dec. 2015), pp.1-4, 4 p.
Publisher
Hindawi Publishing Corporation
Publication Date
2015-10-11
Country of Publication
Egypt
No. of Pages
4
Main Subjects
Abstract EN
We utilize sidereal rotation period expressions to calculate the sun’s rotation period via sunspot observation.
From the well-known astronomical sites, we collected sunspot diagrams for 14 months, from January 2013 to February 2014, to analyze, compare, and implement statistical research.
In addition to acquiring the average angular rate of the movement of sunspots, we found that even the same number of sunspots moved at different angular rates, and generally the life of larger sunspots is longer than 10 days.
Therefore the larger sunspots moved around the back of the sun, and a handful of relatively smaller sunspots disappeared within a few days.
The results show that the solar rotation period varied with the latitude.
However, if we take the average of the sunspots at high and low latitudes, we find that the calculated value is very close to the accredited values.
American Psychological Association (APA)
Chen, Tsung-Ching& Lih, Jiann-Shing& Chang, Tien-Tang& Yang, Chih-Hung& Lu, Ming-Chi& Liu, Chia-Ju…[et al.]. 2015. Using Sidereal Rotation Period Expressions to Calculate the Sun’s Rotation Period through Observation of Sunspots. Mathematical Problems in Engineering،Vol. 2015, no. 2015, pp.1-4.
https://search.emarefa.net/detail/BIM-1073026
Modern Language Association (MLA)
Chen, Tsung-Ching…[et al.]. Using Sidereal Rotation Period Expressions to Calculate the Sun’s Rotation Period through Observation of Sunspots. Mathematical Problems in Engineering No. 2015 (2015), pp.1-4.
https://search.emarefa.net/detail/BIM-1073026
American Medical Association (AMA)
Chen, Tsung-Ching& Lih, Jiann-Shing& Chang, Tien-Tang& Yang, Chih-Hung& Lu, Ming-Chi& Liu, Chia-Ju…[et al.]. Using Sidereal Rotation Period Expressions to Calculate the Sun’s Rotation Period through Observation of Sunspots. Mathematical Problems in Engineering. 2015. Vol. 2015, no. 2015, pp.1-4.
https://search.emarefa.net/detail/BIM-1073026
Data Type
Journal Articles
Language
English
Notes
Includes bibliographical references
Record ID
BIM-1073026