6–10 Sept 2021
Online
Europe/Rome timezone

Failed eruption stopped at the distance of 3 Rʘ from the photosphere.

9 Sept 2021, 09:26
13m
Online

Online

Poster Session 4 - From Radio to Gamma Rays: Near-Sun Manifestations and Triggering of Solar Flares and Coronal Mass Ejections Poster Session 9.5

Speaker

Tomasz Mrozek (Space Research Centre Polish Academy of Sciences)

Description

It is well known that not all solar flares are connected with eruptions followed by coronal mass ejection (CME). Even strongest X-class flares may not be accompanied by eruptions or are accompanied by failed eruptions. One of important factor that prevent eruption from developing into CME is strength of the magnetic field overlying flare site. However, few other factors should be considered like solar gravity, filament's internal magnetic tension etc. We present multi-instrument observations of exceptional eruption which was stopped in the LASCO C2 field of view, at the distance of 3 Rʘ from the photosphere. The eruption was observed by SDO\AIA, STEREO A and B, and RHESSI. We performed detailed analysis of eruption's DEM maps, kinematics from three points of view, and HXR emission. Moreover, magnetic fields from PFSS and NLFF models were investigated. This allowed us to analyse in details the energy balance of flare-eruption and episodes of acceleration and deceleration which occurs during the eruption at different heights, leading to stop the eruption eventually.

Primary authors

Tomasz Mrozek (Space Research Centre Polish Academy of Sciences) Dr Urszula Bąk-Stęślicka (Astronomical Institute, University of Wrocław) Mr Kamil Bicz (Astronomical Institute, University of Wrocław) Dr Sylwester Kołomański (Astronomical Institute, University of Wrocław) Mr Karol Kułaga (Astronomical Institute, University of Wrocław) Dr Marek Stęślicki (Space Research Centre, Polish Academy of Sciences)

Presentation materials