Astronomy and Astrophysics – Astrophysics
Scientific paper
2006-09-18
Astrophys.J.654:650-664,2007
Astronomy and Astrophysics
Astrophysics
34 pages, 13 figures - In press Astrophysical Journal (Jan 1 2007)
Scientific paper
10.1086/509071
Identifying the two physical mechanisms behind the production and sustenance of the quiescent solar corona and solar wind poses two of the outstanding problems in solar physics today. We present analysis of spectroscopic observations from the Solar and Heliospheric Observatory that are consistent with a single physical mechanism being responsible for a significant portion of the heat supplied to the lower solar corona and the initial acceleration of the solar wind; the ubiquitous action of magnetoconvection-driven reprocessing and exchange reconnection of the Sun's magnetic field on the supergranular scale. We deduce that while the net magnetic flux on the scale of a supergranule controls the injection rate of mass and energy into the transition region plasma it is the global magnetic topology of the plasma that dictates whether the released ejecta provides thermal input to the quiet solar corona or becomes a tributary that feeds the solar wind.
Armstrong James D.
Curdt Werner
Davey Alisdair R.
Hassler Donald M.
Lin Gang
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