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Density of solar flares?

  1. Sep 29, 2007 #1
    What is the density of solar flares usually?
     
  2. jcsd
  3. Sep 29, 2007 #2

    Astronuc

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    Staff: Mentor

    There are some numbers here, but the article doesn't say anything about specific location, i.e. how far from the surface of the sun the data are reported.
    http://www.esa.int/esaCP/SEMB49QJNVE_index_0.html

    Solar flares would ostensibly have particle densities on the order of the chromosphere and corona.

    See - RELEASE OF HELIUM FROM CLOSED-FIELD REGIONS OF THE SUN
    http://www.journals.uchicago.edu/ApJ/journal/issues/ApJ/v624n1/61619/61619.web.pdf

    The Structure of the Sun
    http://www.sec.noaa.gov/Curric_7-12/Chapter_2.pdf
     
  4. Sep 30, 2007 #3
    What about modeling them as having the density of the sun as in the beginning a lot of the stuff are blown out from the sun.
     
  5. Sep 30, 2007 #4

    Astronuc

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    Staff: Mentor

    In the article in last link (pdf) -
    So modeling the initial conditions of the flare based on the density of the chromosphere near sun spots. One would need a good plasma MHD model with knowledge of the plasma density and currents, magnetic field strengths and rate of change of magetic fields (for induced EMF).

    See if one can obtain access to the journal Solar Physics

    Solar Flare Statistics with a One-Dimensional Mhd Model
    http://www.springerlink.com/content/r82p30h54v444207/

    Turbulent plasma model of the narrowband dm-spikes
    http://solar.physics.montana.edu/cgi-bin/eprint/index.pl?do_by_author=1&authorid=60
     
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