On the Bright Loop Top Emission in Post Eruption Arcades

Autor:	Sharma, Rohit, Tripathi, Durgesh, Isobe, Hiroaki, Ghosh, Avyarthana
Rok vydání:	2016
Předmět:	Astrophysics - Solar and Stellar Astrophysics
Druh dokumentu:	Working Paper
DOI:	10.3847/0004-637X/823/1/47
Popis:	The observations of post eruption arcades (PEAs) in X-rays and EUV reveal strong localised brightenings at the loop top regions. The origin of these brightenings and their dynamics is not well understood to date. Here, we study the dynamics of PEAs using one-dimensional hydrodynamic modelling with the focus on the the understanding of the formation of localised brightening.Our findings suggest that these brightenings are the result of collisions between the counter-streaming chromospheric evaporation from both the foot points. We further perform forward modelling of the emission observed in simulated results in various spectral lines observed by the Extreme-Ultraviolet Imaging Telescope aboard Hinode. The forward modelled intensities in various spectral lines are in close agreement with a flare observed in December 17, 2006 by EIS. Comment: Accepted by ApJ
Databáze:	arXiv
Externí odkaz:	http://arxiv.org/abs/1603.04959 Zobrazit plný text záznamu View this record from Arxiv