Possibility for Coronal Magnetic Field Measurements by EUV and X-ray Spectroscopy

Possibility for Coronal Magnetic Field Measurements by EUV and X-ray Spectroscopy

Sophie Canton (Charge exchange)Matt Carpenter (Algorithms,CX)Jaan Lepson (EUV spectra)Henry Silva (SMM/Yohkoh data)

Sophie Canton (Charge exchange)Matt Carpenter (Algorithms,CX)Jaan Lepson (EUV spectra)Henry Silva (SMM/Yohkoh data)

Peter BeiersdorferPeter Beiersdorfer

Solar LunchSSL, 5/19/06

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The extreme ultraviolet is extremely rich in lines

The solar emission in the 25 – 170Å region has similar problems and more

There are few observations in this spectral band

The data from the 1970's represents the reference data that are still being used in emission models

We have been making laboratory measurements to build a catalogue of the lines in the EUV

Discovery of an X-ray line diagnostic of the magnetic field

Explanation of the magnetic-field sensitivity

Predicted magnetic-field variation of B/3F in variousastrophysical ions

Resolving power to see these lines

Detection of line B in Fe XVII

High-resolution detection of line B

B/3F depends on magnetic field and electron density

Can the B line be observed in the Sun?