Magnetic reconnection in 2D stratified atmospheres. II. Observational consequences

Details Magnetic reconnection in 2D stratified atmospheres. II. Observational consequences Magnetic reconnection in 2D stratified atmospheres. II. Observational consequences

Feb 2002

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2002a%26a...383..697r&link_type=abstract

Astronomy and Astrophysics, v.383, p.697-705 (2002)

Astronomy and Astrophysics

Astrophysics

7

Mhd, Sun: Atmosphere, Sun: Transition Region, Sun: Uv Radiation, Line: Profiles

Scientific paper

We synthesise three resonance transitions of Li-like ions, C IV 1548.2 Å, O VI 1031.9 Å, and Ne VIII 770.4 Å, based on the MHD experiments presented in Part I of this study. Part I involved 2D MHD modelling of magnetic reconnection events in stratified magneto-hydrostatic atmospheres selected to represent a ``quiet'' Sun transition region environment. Here in Part II, we discuss some observable consequences of these simulations by including effects of non-equilibrium ionization in a 1D approximation. All spectral line syntheses are done along a particular ray, oriented vertically along the initial current structure. Computed time-series, in the three spectral lines, reveal both blue- and red-shifted Doppler components. It is found to be easier to detect the reconnection event in the various emission lines as strongly Doppler-shifted components as the stratification increases. We predict what the observational consequences of these reconnection events would be, if various spatial resolutions under 1 arcsec become available in future observations. This work is a continuation of previous numerical studies related to solar explosive events.

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