activity
20112026
most citedNon-Equilibrium Processes in the Solar Corona, Transition Region, Flares, and Solar Wind \textit{(Invited Review)}

71 citations · 233 across the 15 of their papers we have counts for

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astro-ph.SR2026

High-Resolution Solar X-ray Spectroscopy from Archived Solar Maximum Mission Data

Kenneth J. H. Phillips, Barbara Sylwester, Janusz Sylwester

Archived high-resolution X-ray spectra in the 13~Å to 22~Å range from the Flat Crystal Spectrometer (FCS), an instrument on the Solar Maximum Mission operating in the 1980s, are an…

astro-ph.SR2023★ 6 cited

Varying Calcium Abundances in Solar Flares seen by Solar Maximum Mission

Barbara Sylwester, Janusz Sylwester, Kenneth J. H. Phillips +1

We report on calcium abundance estimates during the decay phases of 194 solar X-ray flares using archived data from the Bent Crystal Spectrometer (BCS) on Solar Maxim…

astro-ph.SR2022★ 8 cited

New Solar Flare Calcium Abundances with no Surprises: Results from the SMM Bent Crystal Spectrometer

J. Sylwester, B. Sylwester, K. J. H. Phillips +1

The calcium abundance in flare plasmas is estimated using X-ray spectra from the Solar Maximum Mission Bent Crystal Spectrometer (BCS) during the decays of 194 flares (GOES classif…

astro-ph.SR2022★ 3 cited

On the Application of Differential Evolution to the Analysis of X-Ray Spectra

Anna Kepa, Barbara Sylwester, Marek Siarkowski +1

Using methods of differential evolution (DE,) we determined the coronal elemental abundances and the differential emission measure (DEM) distributions for the plasma flaring on 200…

astro-ph.SR2019★ 2 cited

A Multiwavelength Analysis of the Long-duration Flare Observed on 15 April 2002

A. Kepa, B. Sylwester, J. Sylwester +2

We present a multiwavelength analysis of the long duration flare observed on 15 April 2002 (soft X-ray peak time at 03:55 UT, SOL2002-04-15T03:55). This flare occurred on the disk…

astro-ph.SR2018★ 11 cited

Highly ionized Calcium and Argon X-ray spectra from a large solar flare

K. J. H. Phillips, J. Sylwester, B. Sylwester +5

X-ray lines of helium-like calcium (\ion{Ca}{19}) between 3.17~Å and 3.21~Å and associated \ion{Ca}{18} dielectronic satellites have previously been observed in solar flare spectra…