Dear all,

Hope this mail finds you all in good health and spirits. I am Vishal Upendran, graduate student working with Prof. Durgesh Tripathi at IUCAA, Pune, India on coronal heating and solar wind emergence.

Our work on the impulsive heating of Quiet Corona was recently accepted for publication in ApJ. Essentially, we study pixel-wise light curves of Quiet Sun regions in the 171 Å, 193 Å and 211 Å from AIA by combining the empirical, statistical impulsive heating forward model of Pauluhn & Solanki (2007) with a machine-learning inversion model that allows uncertainty quantification.

On performing inversions across approx. 300,000 light curves, we find that there are approximately 2--3 impulsive events per min, with a lifetime of about 10--20 min. The power law slope distribution peaks above 2 for all passbands. We then explore correlations among the frequency of impulsive events, their timescales and peak energy. The correlations suggest that conduction losses dominate over radiative cooling losses, and there might be a reservoir of energy either depleted by frequent, small events or infrequent, large events.

I am excited to obtain feedback from the community on this work, and hope it would be an enjoyable read to you.

The arxiv link: https://arxiv.org/abs/2103.16824.

Best regards,

Vishal

--
Vishal Upendran,
Senior Research Fellow, Inter-University Centre for Astronomy and Astrophysics (IUCAA),
Pune, India - 411007