Observations of a solar flare and filament eruption in Lyman alpha and X-rays

TL;DR

This paper characterizes a solar flare and filament eruption observed in Lyman alpha and X-rays, analyzing their appearance, behavior, energetics, and evolution to better understand solar activity.

Contribution

It provides a detailed analysis of a specific solar flare event using multi-wavelength observations and estimates the flare's energy budget with corrected data and modeling.

Findings

L-alpha power was quantified from TRACE data.

Flare electron energy was estimated using Yohkoh/HXT emissions.

The study improved understanding of flare energetics and evolution.

Abstract

We aim to characterise the appearance and behaviour of a flare and filament ejection which occurred on 8th September 1999 and was observed by TRACE in L-alpha as well as by the Yohkoh Soft and Hard X-ray telescopes. We explore the flare energetics and its spatial and temporal evolution. A correction is applied to the TRACE data to obtain a better estimate of the pure L-alpha signature. The L-alpha power is obtained from a knowledge of the TRACE response function, and the flare electron energy budget is estimated by interpreting Yohkoh/HXT emission in the context of the collisional thick target model.