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On the line ratio diagnostics for NeV, MgV, SiVII and MgVII solar ions |
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| Authors: | BN Dwivedi Anita Mohan PK Raju |
| Institution: | a Department of Applied Physics, Institute of Technology, Banaras Hindu University, Varanasi 221005, India b Indian Institute of Astrophysics, Bangalore 560034, India |
| Abstract: | We present NeV/MgV and MgVII/SiVII theoretical line intensity ratios as a function of electron density and temperature for physical conditions within the solar chromosphere-corona transition region. The electron pressure within the emission regions has been assumed to be a constant parameter. These line intensity ratios in addition could be useful for estimating relative element abundances Ne/Mg and Mg/Si. Line intensities of these ions have been computed using a model solar atmosphere and these have been compared with the available observed values for the quiet -Sun conditions. The analysis suggests the need for observations at higher spectral resolution. The successful launch of the SOHO satellite recently should provide such spectra. |
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