62 citations · 168 across the 10 of their papers we have counts for
10 papers
Solar limb faculae: intensity contrast from two vantage points
K. Albert, J. Hirzberger, N. A. Krivova +9
Small-scale magnetic flux concentrations contribute significantly to the brightness variations of the Sun, yet observing them - particularly their magnetic field - near the solar l…
The variation in the response of solar full-disc magnetographs
K. L. Yeo, S. K. Solanki, N. A. Krivova
We compared magnetograms from the KPVT/SPM, SoHO/MDI, SOLIS/VSM, and SDO/HMI with the aim of probing the effect on measured solar magnetism of the variation in instrument response…
Reconstruction of total solar irradiance variability as simultaneously apparent from Solar Orbiter and Solar Dynamics Observatory
K. L. Yeo, N. A. Krivova, S. K. Solanki +42
Solar irradiance variability has been monitored almost exclusively from the Earth's perspective. {We present a method to combine the unprecedented observations of the photospheric…
Modeling Stellar CaII H & K Emission Variations: Spot Contribution to the S-index
K. Sowmya, A. I. Shapiro, L. H. M. Rouppe van der Voort +2
The S-index is a measure of emission in the CaII H & K lines and is a widely used proxy of stellar magnetic activity. It has been assumed until now that the S-index is mainly affec…
Intensity contrast of solar network and faculae close to the solar limb, observed from two vantage points
K. Albert, N. A. Krivova, J. Hirzberger +43
The brightness of faculae and network depends on the angle at which they are observed and the magnetic flux density. Close to the limb, assessment of this relationship has until no…
Faculae cancel out on the surfaces of active Suns
N. -E. Nèmec, A. I. Shapiro, E. Işık +5
Surfaces of the Sun and other cool stars are filled with magnetic fields, which are either seen as dark compact spots or more diffuse bright structures like faculae. Both hamper de…
Predictions of Astrometric Jitter for Sun-like Stars. III. Fast Rotators
K. Sowmya, N. -E. Nèmec, A. I. Shapiro +3
A breakthrough in exoplanet detections is foreseen with the unprecedented astrometric measurement capabilities offered by instrumentation aboard Gaia space observatory. Besides, as…
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…
EMPIRE: A robust empirical reconstruction of solar irradiance variability
K. L. Yeo, N. A. Krivova, S. K. Solanki
We present a new empirical model of total and spectral solar irradiance (TSI and SSI) variability entitled EMPirical Irradiance REconstruction (EMPIRE). As with existing empirical…
UV solar irradiance in observations and the NRLSSI and SATIRE-S models
K. L. Yeo, W. T. Ball, N. A. Krivova +3
Total solar irradiance and UV spectral solar irradiance have been monitored since 1978 through a succession of space missions. This is accompanied by the development of models aime…