Signatures of Sweet-Parker magnetic reconnection in the solar chromosphere

Details Signatures of Sweet-Parker magnetic reconnection in the solar chromosphere Signatures of Sweet-Parker magnetic reconnection in the solar chromosphere

Mar 2009

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2009a%26a...495..953l&link_type=abstract

Astronomy and Astrophysics, Volume 495, Issue 3, 2009, pp.953-957

Astronomy and Astrophysics

Astrophysics

12

Sun: Activity, Sun: Chromosphere, Sun: Magnetic Fields

Scientific paper

Aims: Predicted and observed signatures of magnetic reconnection in the solar chromosphere are discussed. Methods: Compressible reconnection scalings for the Sweet-Parker current sheet in the chromosphere are derived, which generalize earlier treatments by including both the Lorentz force and the pressure gradient in the reconnection outflow as possible drivers of reconnection jets. The theoretical scalings were tested against the measured speed, density, and temperature of an extreme-ultraviolet jet, observed with TRACE. Model predictions for the reconnection jet parameters as functions of height above the solar photosphere were computed. Results: The predicted variation of reconnection jet parameters with height appears to correspond to the observed wide range of parameters of chromospheric jet-like features.

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