activity
20072023
most citedDiscovery of a 1.6-year Magnetic Activity Cycle in the Exoplanet Host Star iota Horologii

131 citations · 1.2k across the 49 of their papers we have counts for

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40 papers · 1 filter

astro-ph.SR2023★ 2 cited

Derivation of Instrument Requirements for Polarimetry using Mg, Fe, and Mn lines between 250 and 290 nm

A. G. de Wijn, P. G. Judge, R. Ezzeddine +1

Judge et al. (2021) recently argued that a region of the solar spectrum in the near-UV between about 250 and 290 nm is optimal for studying magnetism in the solar chromosphere due…

astro-ph.SR2023★ 9 cited

First Observation of Chromospheric Waves in a Sunspot by DKIST/ViSP: The Anatomy of an Umbral Flash

Ryan J. French, Thomas J. Bogdan, Roberto Casini +2

The Visible Spectro-Polarimeter (ViSP) of the NSF Daniel K. Inouye Solar Telescope (DKIST) collected its Science Verification data on May 7-8, 2021. The instrument observed multipl…

astro-ph.SR2022★ 9 cited

Optimal spectral lines for measuring chromospheric magnetic fields

P. Judge, P. Bryans, R. Casini +4

This paper identifies spectral lines from X-ray to infrared wavelengths which are optimally suited to measuring vector magnetic fields as high as possible in the solar atmosphere.…

astro-ph.SR2022★ 7 cited

Thermal and Non-Thermal Properties of Active Region Recurrent Coronal Jets

Alin R. Paraschiv, Alina C. Donea, Philip G. Judge

We present observations of recurrent active region coronal jets and derive their thermal and non-thermal properties, by studying the physical properties of the plasma simultaneousl…

astro-ph.SR2022

Efficient and Automated Inversions of Magnetically-Sensitive Forbidden Coronal Lines: CLEDB -- The Coronal Line Emission DataBase Magnetic Field Inversion Algorithm

Alin Razvan Paraschiv, Philip Gordon Judge

We present CLEDB, a "single point inversion" algorithm for inferring magnetic parameters using I,Q,U, and V Stokes parameters of forbidden magnetic dipole lines formed in the solar…

astro-ph.SR2022★ 6 cited

A spectroscopic survey of infrared 1-4μm spectra in regions of prominent solar coronal emission lines of Fe XIII, Si X, and Si IX

Aatiya Ali, Alin Paraschiv, Kevin Reardon +1

The infrared solar spectrum contains a wealth of physical data about the Sun and is being explored using modern detectors and technology with new ground-based solar telescopes. One…