activity
20082023
most citedNominal values for selected solar and planetary quantities: IAU 2015 Resolution B3

423 citations · 901 across the 9 of their papers we have counts for

collaborators

9 papers

astro-ph.SR2023★ 17 cited

Understanding Sun-as-a-star variability of solar Balmer lines

Serena Criscuoli, Sergey Marchenko, Matthew DeLand +2

Precise, high-cadence, long-term records of stellar spectral variability at different temporal scales lead to better understanding of a wide variety of phenomena including stellar…

astro-ph.IM2022★ 1 cited

The Effect of Stellar Contamination on Low-resolution Transmission Spectroscopy: Needs Identified by NASA's Exoplanet Exploration Program Study Analysis Group 21

Benjamin V. Rackham, Néstor Espinoza, Svetlana V. Berdyugina +58

Study Analysis Group 21 (SAG21) of NASA's Exoplanet Exploration Program Analysis Group (ExoPAG) was organized to study the effect of stellar contamination on space-based transmissi…

astro-ph.SR2021★ 30 cited

Reconstructing solar irradiance from historical Ca II K observations. I. Method and its validation

Theodosios Chatzistergos, Natalie A. Krivova, Ilaria Ermolli +5

Knowledge of solar irradiance variability is critical to Earth's climate models and understanding the solar influence on Earth's climate. Direct solar irradiance measurements are o…

astro-ph.SR2021★ 15 cited

Irradiance Variations of the Sun and Sun-Like Stars -- Overview of Topical Collection

Greg Kopp, Alexander Shapiro

This topical collection summarizes recent advances in observing and modeling irradiance variations of the Sun and Sun-like stars, emphasizing the links between surface magnetic fie…

astro-ph.SR2017★ 116 cited

Methodology to create a new Total Solar Irradiance record: Making a composite out of multiple data records

Thierry Dudok de Wit, Greg Kopp, Claus Fröhlich +1

Many observational records critically rely on our ability to merge different (and not necessarily overlapping) observations into a single composite. We provide a novel and fully-tr…

astro-ph.SR2016★ 147 cited

Magnitudes and Timescales of Total Solar Irradiance Variability

Greg Kopp

The Sun's net radiative output varies on timescales of minutes to gigayears. Direct measurements of the total solar irradiance (TSI) show changes in the spatially- and spectrally-i…