Solar Physics

, Volume 228, Issue 1–2, pp 285–299 | Cite as

Nine Years Of Euv Bright Points

  • Scott W. McIntosh
  • Joseph B. Gurman


We discuss early results derived from an algorithm that automates the detection, cataloging, and analysis of extreme-ultraviolet (EUV) “bright points” (BP) from 9 years of data acquired by the Extreme-ultraviolet Imaging Telescope (EIT) on the Solar and Heliospheric Observatory (SOHO). The algorithm relies upon the computation of a map of “intensity significance”; this then contains the location of the EUV BPs. By mapping the location of BPs in each image and linking them through long sequences of EIT images we can describe the temporal and spatial variations of the 1.3× 108 EUV BPs observed by SOHO to date. We suggest that there is a considerable amount of physical information about the solar coronal plasma that can be readily gleamed from the BP detection database. In this paper we discuss only a small portion of the possible correlations, but we point to the possibility of BP lifetime distributions that are well described by modified power-laws; the components of which vary with the different temperature filters and with time over the present solar cycle.


Intensity Significance Spatial Variation Early Result Solar Cycle Bright Point 
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.


Unable to display preview. Download preview PDF.

Unable to display preview. Download preview PDF.


  1. Acton, L., Tsuneta, S., Ogawara, Y., et al.: 1992, Science 258, 616.ADSGoogle Scholar
  2. Brajša, R., Wöhl, H., Vršnak, B., et al.: 2001, Astron. Astrophys. 374, 309.ADSGoogle Scholar
  3. Brown, D. S., Parnell, C. E., Deluca, E. E., et al.: 2002, Adv. Space Res. 29, 1093.ADSGoogle Scholar
  4. Charbonneau, P., McIntosh, S. W., Liu, H., and Bogdan, T. J.: 2001, Solar Phys. 203, 321.CrossRefADSGoogle Scholar
  5. Delaboudinière, J.-P., Artzner, G. E., Brunaud, A. H., et al.: 1995, Solar Phys. 162, 291.CrossRefADSGoogle Scholar
  6. Do, M. N. and Vetterli, M.: 2003, IEEE Trans. Image Proc. 12, 16.MathSciNetGoogle Scholar
  7. Fleck, B., Domingo, V., and Poland, A. I.: 1995, The SOHO Mission, Kluwer, Dordrecht.Google Scholar
  8. Freeland, S. L. and Handy, B. N.: 1998, Solar Phys. 182, 497.CrossRefADSGoogle Scholar
  9. Golub, L., Krieger, A. S., Silk, J. K., et al.: 1974, Astrophys. J. 189, L93.CrossRefADSGoogle Scholar
  10. Hara, H. and Nakakubo-Morimoto, K.: 2003, Astrophys. J. 589, 1062.CrossRefADSGoogle Scholar
  11. Harvey, K. L.: 1997, in Bentley R. D., and Mariska J. T. (eds.), ASP Conference Series, Vol. 111, p. 9.Google Scholar
  12. Harvey, K. L., Strong, K. T., Nitta, N., and Tsuneta, S.: 1993, Adv. Space Res. 13, 27.ADSGoogle Scholar
  13. Harvey, K. L., Strong, K. S., Nitta, N., and Tsuneta, S.: 1994a, in K. S. Balasubramaniam K. S. and Simon, G. W. (eds.), Astronomical Society of the Pacific Conference Series, Vol. 68, p. 377.Google Scholar
  14. Harvey, K. L., Nitta, N., Strong, K. T., and Tsuneta, S.: 1994b, in Uchida Y., Watanabe, T., Shibata, K., and Hudson, H. S. (eds.), X-ray Solar Physics from Yohkoh, p. 21.Google Scholar
  15. Hill, F., Bogart, R. S., Davey, A., Dimitoglou, G., Gurman, J. B., et al.: 2004, in Oschmann, J. M., Jr. (ed.), “Ground-based Telescopes”, Proc. SPIE, Vol. 5493, p. 163.Google Scholar
  16. Howard, R. A., Moses, J. D., Socker, D. G., et al.: 2002, Adv. Space Res. 29, 2017.ADSGoogle Scholar
  17. Kankelborg, C. C. and Longcope, D. W.: 1999, Solar Phys. 190, 59.CrossRefADSGoogle Scholar
  18. McIntosh, S. W. and Gurman, J. B.: 2004, in Walsh, R.W., Ireland, J., Danesy, D., and Fleck, B. (eds.), Proc. SOHO 15 Workshop: “Coronal Heating”, ESA SP-575, p. 235.Google Scholar
  19. McIntosh, S. W. and Gurman, J. B.: 2005, in preparation.Google Scholar
  20. Norman, J. P., Charbonneau, P., McIntosh, S. W., and Liu, H.: 2001, Astrophys. J. 557, 891.CrossRefADSGoogle Scholar
  21. Newton, H. W. and Nunn, M. L.: 1951, Mon. Not. Roy. Astron. Soc. 111, 413ADSGoogle Scholar
  22. Pawal, P.: 1999, Astrophys. J. 510, L73.ADSGoogle Scholar
  23. Sattarov, I., Pevtsov, A. A., Hojaev, A. S., and Sherdonov, C. T.: 2002, Astrophys. J. 564, 1042.CrossRefADSGoogle Scholar
  24. Scherrer, P. H., Bogart, R. S., and Bush, R. I.: 1995, Solar Phys. 162, 129.CrossRefADSGoogle Scholar
  25. Shimojo, M. and Shibata, K.: 1999, Astrophys. J. 516, 934.CrossRefADSGoogle Scholar
  26. Vaiana, G. S., Krieger, A. S., and Timothy, A. F.: 1973, Solar Phys. 32, 81.CrossRefADSGoogle Scholar
  27. Wheatland, M. S.: 2000, Astrophys. J. 536, L10.CrossRefGoogle Scholar
  28. Wuelser, J.-P., Lemen, J. R., Tarbell, T. D., et al.: 2004, in Fineschi, S., and Gummin, M. A. (eds.), Telescopes and Instrumentation for Solar Astrophysics, Proc. SPIE, Vol. 5171, p. 111.Google Scholar

Copyright information

© Springer Science + Business Media, Inc. 2005

Authors and Affiliations

  1. 1.Department of Space StudiesSouthwest Research InstituteBoulderUSA
  2. 2.Laboratory for Solar and Space PhysicsNASA Goddard Space Flight Center, Code 612.1GreenbeltUSA

Personalised recommendations