This paper presents the analysis of high-resolution Stokes observations of eight different umbral dots in a sunspot. The spectra were recorded with the La Palma...
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PublicationThe Thermal and Magnetic Structure of Umbral Dots from the Inversion of High-Resolution Full Stokes Observations
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PublicationThe Thick Disk in the Galaxy NGC 4244 from S4G Imaging
If thick disks are ubiquitous and a natural product of disk galaxy formation and/or evolution processes, all undisturbed galaxies that have evolved during a...
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PublicationThe Third Fermi Large Area Telescope Catalog of Gamma-Ray Pulsars
We present 294 pulsars found in GeV data from the Large Area Telescope (LAT) on the Fermi Gamma-ray Space Telescope. Another 33 millisecond pulsars (MSPs)...
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PublicationThe Three-dimensional Interaction between Emerging Magnetic Flux and a Large-Scale Coronal Field: Reconnection, Current Sheets, and Jets
Using MHD numerical experiments in three dimensions, we study the emergence of a bipolar magnetic region from the solar interior into a model corona containing...
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PublicationThe Three-dimensional Structure of a Sunspot Magnetic Field
We report on observations of the three-dimensional structure of a sunspot magnetic field from the photosphere to the chromosphere, obtained with the new visible...
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PublicationThe Three-dimensional Structure of an Active Region Filament as Extrapolated from Photospheric and Chromospheric Observations
The three-dimensional structure of an active region filament is studied using nonlinear force-free field extrapolations based on simultaneous observations at a...
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PublicationThe Tilt of the Fundamental Plane: Three-Quarters Structural Nonhomology, One-Quarter Stellar Population
The variation of the mass-to-light M/L ratios of early-type galaxies as a function of their luminosities L is investigated. It is shown that the tilt β=0.27 (in...
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PublicationThe Trace of the CNO Cycle in the Ring Nebula NGC 6888
We present new results on the chemical composition of the Galactic ring nebula NGC 6888 surrounding the WN6(h) star WR136. The data are based on deep...
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PublicationThe Transfer of Resonance Line Polarization with Partial Frequency Redistribution in the General Hanle–Zeeman Regime
The spectral line polarization encodes a wealth of information about the thermal and magnetic properties of the solar atmosphere. Modeling the Stokes profiles...