Studying Transition Region Phenomena with Solar-B/EIS

TL;DR

This paper explores how weak transition region lines observed by Solar-B/EIS can be used to diagnose phenomena in active regions, especially in coronal footpoints and blinkers, supported by spectral predictions.

Contribution

It introduces the potential of Solar-B/EIS transition region lines for diagnostic studies, with spectral predictions and a focus on Mg VII density diagnostics.

Findings

EIS count rates are predicted from SOHO/CDS spectra.

Weak transition region lines are useful for diagnosing active region phenomena.

A Mg VII density diagnostic is highlighted.

Abstract

Transition region lines in active regions can become strongly enhanced in coronal footpoints and active region blinkers. The weak transition region lines found in the Solar-B/EIS wavebands will thus become useful for diagnostic studies of these events. EIS count rates predicted from SOHO/CDS spectra are presented, and a Mg VII density diagnostic is highlighted.