Density and temperature diagnostics of solar emission lines from NeV/MgV and SiVII/MgVII Ions |
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| Authors: | Anita Mohan B N Dwivedi P K Raju |
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| Institution: | (1) Department of Applied Physics, Institute of Technology, Banaras Hindu University, 221 005 Varanasi, India;(2) Indian Institute of Astrophysics, 560 034 Bangalore, India |
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| Abstract: | We present NeV/MgV and SiVII/MgVII theoretical line intensity ratios as a function of electron densityN
e
and temperatureT
e
. These are shown in the form of ratio-ratio diagrams, which should in principle allow bothN
e
andT
e
to be deduced for the emitting region of the solar plasma. We apply these diagnostics in the solar atmosphere, and discuss
the available observations made from space. In most cases, however, we deduceN
e
andT
e
from the computed absolute line intensities in a spherically symmetric model atmosphere of the Sun. Possible future applications
of this investigation to spectral data from the Coronal Diagnostic Spectrometer (CDS) on the Solar and Heliospheric Observatory
(SOHO) are briefly discussed. |
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| Keywords: | Solar atmosphere EUV diagnostics emission lines spectroscopic diagnostics |
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