Geomagnetism and Aeronomy

, Volume 53, Issue 5, pp 663–671 | Cite as

Instrumental data on the sunspot formation in the 17th–18th centuries: Correct information or approximations

Article

Abstract

The available data on the sunspot number derived from telescopic observations are analyzed. It has been indicated that uncertainty in the data on the number of sunspot groups is close to 30% for the 17th century-the early 19th century and reaches a factor of 2 and more in individual years. This means that the above data include limited information on solar activity in the 17th–18th centuries and it is necessary to use external sources (first of all, the data of paleoastrophysics) in order to study this activity in the indicated epoch. Only from the middle of the 19th century, information obtained based on instrumental observations became sufciently accurate for reliable quantitative estimates.

Keywords

Solar Activity Sunspot Number Instrumental Data Maunder Minimum Wolf Number 
These keywords were added by machine and not by the authors. This process is experimental and the keywords may be updated as the learning algorithm improves.

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References

  1. Eddy, A., The Maunder minimum, Science, 1976, vol. 192, pp. 1189–1202.CrossRefGoogle Scholar
  2. Gnevyshev, M.N., Nagovitsyn, Yu.A., and Nagovitsyna, E.Yu., Study of the stability and comparison of different Wolf number series, Soln. Dannye, 1985, no. 2, pp. 72–79.Google Scholar
  3. Gnevyshev, M.N., Nagovitsyn, Yu.A., and Nagovitsyna, E.Yu., Soln. Dannye, 1986, no. 3, pp. 57–62.Google Scholar
  4. Hoyt, D. and Schatten, K.H., Group sunspot numbers: A new solar activity reconstruction, Solar Phys., 1998a, vol. 179, pp. 189–219.CrossRefGoogle Scholar
  5. Hoyt, D. and Schatten, K.H., Group sunspot numbers: A new solar activity reconstruction, Solar Phys., 1998b, vol. 181, pp. 491–512.CrossRefGoogle Scholar
  6. Hoyt, D. and Schatten, K.H., How well was the Sun observed during the Maunder minimum?, Solar Phys., 1996, vol. 165, pp. 181–192.CrossRefGoogle Scholar
  7. Kopecky, M. and Kuklin, G.V., On the relative inhomogeneity of long-term series of sunspot indices, Bull. Astron. Inst. Czech., 1980, vol. 31, no. 5, pp. 267–283.Google Scholar
  8. Legrand, J.P., Le Goff, M., Mazaudier, C., and Schroder, W., Solar and auroral activities during the seventeenth century, Acta Geod., Geophys. Montanist. Hung., 1992, vol. 27, no. 2–4, pp. 251–282.Google Scholar
  9. Letfus, V., Relative sunspot numbers in the first half of eighteen century, Solar Phys., 2000, vol. 194, pp. 175–184.CrossRefGoogle Scholar
  10. Letfus, V., Relative sunspot numbers in the first half of the seventeenth century, Solar Phys., 2002, vol. 205, pp. 189–200.CrossRefGoogle Scholar
  11. Miyahara, H., Sokoloff, D., and Usoskin, I.G., The solar cycle at the Maunder minimum epoch, Adv. Geosci. World Sci., 2006, vol. 2, pp. 1–20.CrossRefGoogle Scholar
  12. Nagovitsyn, Yu.A., To the description of long-term variations in the solar magnetic flux: The sunspot area index, Astron. Lett., 2005, vol. 31, no. 8, pp. 557–562.CrossRefGoogle Scholar
  13. O’Dell, C.R. and Van Helden, A., How accurate were the seventeenth-century measurements of solar diameter, Nature, 1987, vol. 330, pp. 629–631.CrossRefGoogle Scholar
  14. Ogurtsov, M.G., Was the solar activity in the last 100 years abnormally high? On the quality of modern solar paleoreconstructions, Astron. Lett., 2007, vol. 33, no. 6, pp. 419–426.CrossRefGoogle Scholar
  15. Ogurtsov, M.G. and Jungner, H., Temporal evolution of statistical features of the sunspot cycles, Adv. Space Res., 2011.Google Scholar
  16. Ribes, J.C. and Nesme-Ribes, E., The solar sunspot cycle in the Maunder minimum AD 1645 to AD 1715, Astron. Astrophys., 1993, vol. 276, pp. 549–563.Google Scholar
  17. Schove, D.J., Sunspot turning-points and aurorae since A.D. 1510, Solar Phys., 1979, vol. 63, pp. 423–432.CrossRefGoogle Scholar
  18. Schove, D.J., Sunspot Cycles., Stroudsburg: Hutchinson Ross Publ., 1983.Google Scholar
  19. Usoskin, I.G. and Mursula, K., Long-nerm solar cycle evolution: Review of recent developments, Solar Phys., 2003, vol. 218, pp. 319–343.CrossRefGoogle Scholar
  20. Usoskin, I.G., Mursula, K., and Kovaltsov, G.A., Reconstruction of monthly and yearly group sunspot numbers from sparse daily observations, Solar Phys., 2003, vol. 218, pp. 295–305.CrossRefGoogle Scholar
  21. Vaquero, J.M., Historical sunspot observations: A review, Adv. Space Res., 2007, vol. 40, pp. 929–941.CrossRefGoogle Scholar
  22. Vaquero, J.M., Trigo, R.M., Gallego, M.C., and Moreno-Corral, M.A., Two early sunspots observers: Teodoro de Almeida and Jose Antonio Alzate, Solar Phys., 2007a, vol. 240, pp. 165–175.CrossRefGoogle Scholar
  23. Vaquero, J.M., Gallego, M.C., and Trigo, R.M., Sunspot numbers during 1736–1739 revised, Adv. Space Res., 2007b, vol. 40, pp. 1895–1903.CrossRefGoogle Scholar
  24. Vitinsky, Yu.I., Kopetsky, M., and Kuklin, G.V., Statistika pyatnoobrazovatel’noi deyatel’nosti Solntsa (Sunspot Formation Activity Statistics), Moscow: Nauka, 1986.Google Scholar
  25. Waldmeier, M., The sunspot activity in the years 1610–1960, Zurich: Schulthess, 1961.Google Scholar
  26. Wilson, R.M., A comparison of Wolf’s reconstructed record of annual sunspot number with — Schwabe’s observed record of “clusters of spots” for the interval of 1826–1868, Solar Phys., 1998, vol. 182, pp. 217–230.CrossRefGoogle Scholar

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© Pleiades Publishing, Ltd. 2013

Authors and Affiliations

  1. 1.Ioffe Physical-Technical InstituteRussian Academy of SciencesSt. PetersburgRussia
  2. 2.Central (Pulkovo) Astronomical ObservatoryRussian Academy of SciencesSt. PetersburgRussia

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