Can I read A Flare Observed in Coronal, Transition Region and Helium I 10830 \AA\ Emissions on EtoBox?

A Flare Observed in Coronal, Transition Region and Helium I 10830 \AA\ Emissions by Zeng, Zhicheng; Qiu, Jiong; Cao, Wenda; Judge, Philip G. is a scholarly article available to read on EtoBox.

What is A Flare Observed in Coronal, Transition Region and Helium I 10830 \AA\ Emissions about?

On June 17, 2012, we observed the evolution of a C-class flare associated with the eruption of a filament near a large sunspot in the active region NOAA 11504. We obtained high spatial resolution filtergrams using the 1.6 m New Solar Telescope at the Big Bear Solar Observatory in broad-band TiO at 706 nm (bandpass:10 \AA) and He I 10830 \AA\ narrow-band (bandpass: 0.5 \AA, centered 0.25 \AA\ to the blue). We analyze the spatio-temporal behavior of the He I 10830 \AA\ data, which were obtained over a 90" X 90" field of view with a cadence of 10 sec. We also analyze simultaneous data from the Atmospheric Imaging Assembly and Extreme Ultraviolet Variability Experiment instruments on board the Solar Dynamics Observatory spacecraft, and data from Reuven Ramaty High Energy Solar Spectroscopic Imager and GOES spacecrafts. Non-thermal effects are ignored in this analysis. Several quantitative aspects of the data, as well as models derived using the "0D" Enthalpy-Based Thermal Evolution of Loops model (EBTEL: Klimchuk et al. 2008) code, indicate that the triplet states of the 10830 \AA\ multiplet are populated by photoionization of chromospheric plasma followed by radiative recombination. S

Author

Zeng, Zhicheng; Qiu, Jiong; Cao, Wenda; Judge, Philip G.

Published

2014

Language

EN