89 citations · 350 across the 15 of their papers we have counts for
5 papers · 1 filter
The relationship between bipolar magnetic regions and their sunspots
K. L. Yeo, S. K. Solanki, N. A. Krivova +1
The relationship between bipolar magnetic regions (BMRs) and their sunspots is an important property of the solar magnetic field, but it is not well constrained. One consequence is…
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…
Modeling stellar Ca II H & K emission variations. I. Effect of inclination on the S-index
K. Sowmya, A. I. Shapiro, V. Witzke +5
The emission in the near ultraviolet Ca II H & K lines is modulated by stellar magnetic activity. Although this emission, quantified via the S-index, has been serving as a prime pr…
Intensity contrast of solar network and faculae -- II. Implications for solar irradiance modelling
K. L. Yeo, N. A. Krivova
We aim to gain insight into the effect of network and faculae on solar irradiance from their apparent intensity. Taking full-disc observations from the Solar Dynamics Observatory,…
The Dimmest State of the Sun
K. L. Yeo, S. K. Solanki, N. A. Krivova +5
How the solar electromagnetic energy entering the Earth's atmosphere varied since pre-industrial times is an important consideration in the climate change debate. Detrimental to th…