activity
20072026
most citedRHESSI Microflare Statistics II. X-ray Imaging, Spectroscopy & Energy Distributions

213 citations · 426 across the 11 of their papers we have counts for

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7 papers · 1 filter

astro-ph.SR2026

A Statistical Survey of Faint Solar X-ray Transients Observed by NuSTAR

Reed B. Masek, Lindsay Glesener, Jessie Duncan +14

In this paper, we use a highly sensitive telescope to characterize solar X-ray transients ranging from microflares in active regions down to weakly energetic brightenings in the qu…

astro-ph.SR2026★ 1 cited

Quiet Sun impulsive events observed with NuSTAR during solar minimum

Sarah Paterson, Iain G. Hannah, Brian W. Grefenstette +6

The investigation of small-scale energy release in the Sun's atmosphere is important in understanding how the corona is heated. Previous work has been able to study small EUV and S…

astro-ph.SR2025

Observations of a Faint Nonthermal Onset before a GOES C-class Flare

Natália Bajnoková, Iain G. Hannah, Hannah Collier +6

We present analysis of a GOES C1-class flare from 2022 September 6, which was jointly observed as occulted by Nuclear Spectroscopic Telescope ARray (NuSTAR) and on-disk by Spectrom…

astro-ph.SR2023★ 25 cited

The existence of hot X-ray onsets in solar flares

Andrea Francesco Battaglia, Hugh Hudson, Alexander Warmuth +9

It is well known among the scientific community that solar flare activity often begins well before the main impulsive energy release. Our aim is to investigate the earliest phase o…

astro-ph.SR2020★ 21 cited

NuSTAR Observation of Energy Release in Eleven Solar Microflares

Jessie Duncan, Lindsay Glesener, Brian W. Grefenstette +6

Solar flares are explosive releases of magnetic energy. Hard X-ray (HXR) flare emission originates from both hot (millions of Kelvin) plasma and nonthermal accelerated particles, g…

astro-ph.SR2012★ 1 cited

Non-thermal processes in coronae and beyond

K. Poppenhaeger, H. M. Guenther, P. Beiersdorfer +7

This contribution summarizes the splinter session "Non-thermal processes in coronae and beyond" held at the Cool Stars 17 workshop in Barcelona in 2012. It covers new developments…