Matthias Rempel | High Altitude Observatory

The Dimmest State of the Sun

Measured and modelled total solar irradiance

AAS Nova Features a Recent Publication by Philip Judge

Images to highlight the corrugated surfaces at which the centers of UV lines are formed (close to τ = 1) in MURaM calculations of the upper solar chromosphere

Opposite Polarity Magnetic Fields and Convective Downflows in a Simulated Sunspot Penumbra

Sunspot simulations

A distinct magnetic property of the inner penumbral boundary III. Analysis of simulated sunspots

Radial profiles of continuum intensity (b), magnetic field inclination (c), total magnetic field strength (d), vertical magnetic field strength (e), and horizontal magnetic field strength (f)

On the contribution of quiet Sun magnetism to solar irradiance variations: Constraints on quiet Sun variability and grand minimum scenarios

Plots of magnetic field and TSI with time

Superstrong photospheric magnetic fields in sunspot penumbrae

A portion of the inner penumbra in the MURaM sunspot simulation by Rempel (2015) with some filaments hosting a counter-Evershed flow (see also Siu-Tapia et al. 2018)

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