Are sunspots different during this solar minimum?

Eos

Volumn 90, Issue 30, 2009, Pages 257-258

  Livingston, W ^a   Penn, M ^a  

^a National Solar Observator   (United States)

Author keywords

[No Author keywords available]

Indexed keywords

EID: 70249148573     PISSN: 00963941     EISSN: None     Source Type: Journal    
DOI: 10.1029/2009EO300001     Document Type: Note

References (7)

1. Albregtsen, R, and P. Maltby (1981), Solar cycle variation of sunspot intensity, Sol. Phys., 71, 269-283.
2. Fisk, L. A., and L. Zhao (2009), The heliospheric magnetic field and the solar wind during the solar cycle, in Universal Heliophysical Processes: Proceedings of the International Astronomical Union, vol.257, edited by N. Gopalswamy and D. F. Webb, pp. 109-120, Cambridge Univ. Press, New York.
3. Lean, J., A. Skumanich, and 0. White (1992), Estimating the Sun's radiative output during the Maunder Minimum, Geophys. Res. Lett., 73(15), 1591-1594.
4. Norton, A. A., and P. Gilman (2004), Magnetic field-minimum intensity correlation in sunspots: A tool for solar dynamo diagnostics, Astrophys. J., 603, 348-354.
5. Penn, M. J., and W. Livingston (2006), Temporal changes in sunspot umbral magnetic fields and temperatures, Astrophys. J., 649, L45-L48.
6. Schad, T. A., and M. J. Penn (2008), Solar cycle dependence of umbral magneto-induced line broadening, Eos Trans. AGU, 89(23), Jt. Assem. Suppl., SP41B-06.
7. Solanki, S. K. (2003), Sunspots: An overview, Astron. Astrophys. Rev., 11(2-3), 153-286.