Advertisement

The Reliability of the Records of Observed Solar Eclipses in India and Comparison with Contemporaneous Eclipse Data from Other Countries

  • Kiyotaka TanikawaEmail author
  • Mitsuru Sôma
  • B. S. Shylaja
  • Mayank Vahia
Conference paper
Part of the Astrophysics and Space Science Proceedings book series (ASSSP, volume 54)

Abstract

In this paper, we examine the reliability of the records of solar eclipses observed in southern India taken from recently compiled records of solar eclipses. Observations in AD 938, 1087 and 1268 survived the preliminary examination of reliability. We have carried out a more precise examination utilising the so called ‘Sôma Diagram’, which determines the ΔT values of the periods with the aid of contemporaneous eclipse data from other countries. Finally, the Indian observations of AD 938, 1087 and 1268 have been incorporated into the determination of a narrower range of ΔT values. We will describe the examination process and give these three ranges.

Period

Observed years

Range of ΔT

938

912, 938, 939, 968

1513 s < ΔT < 2164 s

1087

1061, 1069, 1087

1197 s < ΔT < 1673 s

1268

1245, 1267, 1268, 1275

98 s < ΔT < 806 s

References

  1. Kanda, S, 1935. Nihon Tenmon Shiryo. Tokyo, Kouseisha Publishing Company (in Japanese).Google Scholar
  2. Kim, J., and Chong, I. (eds.), 1451. Gokuryeosa. Tokyo, Kokusho Kanko Kai (1908 and 1909 reprints) (in Korean).Google Scholar
  3. Oppolzer, T. von, 1887. Canon der Finsternisse. Wien (reprinted by Dover Publications, 1962).Google Scholar
  4. Shylaja, B.S., and Ganesha, G.K., 2016. History of the Sky – On Stones. Bengaluru, Infosys Foundation.Google Scholar
  5. Sôma, M., and Tanikawa, K., 2016. Earth rotation derived from occultation records. Publications of the Astronomical Society of Japan, 68, 29, 1–8.ADSGoogle Scholar
  6. Stephenson, F.R., 1997. Historical Eclipses and Earth Rotation. Cambridge, Cambridge University Press.Google Scholar
  7. Subbarayappa, B.V., 2014. Indian records of eclipses: their historical matrix. In Proceedings of the Intensive Workshop on Ancient Medieval Eclipse Data: Compilation of Eclipse Data and Examination of their Reliability, Mitaka, Tokyo, Japan, November 2728, 2014. Tokyo, National Astronomical Observatory of Japan. Pp. 16–33.Google Scholar
  8. Tanikawa, K., and Sôma, M., 2004. ΔT and the tidal acceleration of the lunar motion from eclipses observed at plural sites. Publications of the Astronomical Society of Japan, 56, 879–885.ADSCrossRefGoogle Scholar
  9. Tanikawa, K., Sôma, M., and Ueda, A., 2014. ΔT variations from AD 1133 to AD 1267. Paper presented at the 8th International Conference on Oriental Astronomy, Heifei, China, March, 2014.Google Scholar
  10. Tanikawa, K., Yamamoto, T., and Sôma, M., 2010. Solar eclipses in the first half of the Chunqiu Period. Publications of the Astronomical Society of Japan, 62, 797–809.ADSCrossRefGoogle Scholar
  11. Zhuang, W.F., and Wang, L.X. (eds.), 1988. Chunguo Gudai Tian-Xiang Jilu Zongji. Nanjing, Jiangsu Science-Technology Publishing (in Chinese).Google Scholar

Copyright information

© Hindustan Book Agency 2018 and Springer Nature Singapore Pte Ltd. 2019

Authors and Affiliations

  • Kiyotaka Tanikawa
    • 1
    Email author
  • Mitsuru Sôma
    • 1
  • B. S. Shylaja
    • 2
  • Mayank Vahia
    • 3
  1. 1.National Astronomical Observatory of JapanMitakaJapan
  2. 2.Jawaharlal Nehru PlanetariumBengaluruIndia
  3. 3.Department of Astronomy & AstrophysicsTata Institute of Fundamental ResearchMumbaiIndia

Personalised recommendations