208 citations · 1.6k across the 59 of their papers we have counts for
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Data compression for local correlation tracking of solar granulation
Björn Löptien, Aaron C. Birch, Tom L. Duvall +2
Context. Several upcoming and proposed space missions, such as Solar Orbiter, will be limited in telemetry and thus require data compression. Aims. We test the impact of data compr…
Anisotropy of the solar network magnetic field around the average supergranule
J. Langfellner, L. Gizon, A. C. Birch
Supergranules in the quiet Sun are outlined by a web-like structure of enhanced magnetic field strength, the so-called magnetic network. We aim to map the magnetic network field ar…
Simulating acoustic waves in spotted stars
Emanuele Papini, Aaron C. Birch, Laurent Gizon +1
Acoustic modes of oscillation are affected by stellar activity, however it is unclear how starspots contribute to these changes. Here we investigate the nonmagnetic effects of star…
Spatially resolved vertical vorticity in solar supergranulation using helioseismology and local correlation tracking
J. Langfellner, L. Gizon, A. C. Birch
Flow vorticity is a fundamental property of turbulent convection in rotating systems. Solar supergranules exhibit a preferred sense of rotation, which depends on the hemisphere. Th…
Interpretation of Helioseismic Travel Times - Sensitivity to Sound Speed, Pressure, Density, and Flows
Raymond Burston, Laurent Gizon, Aaron C. Birch
Time-distance helioseismology uses cross-covariances of wave motions on the solar surface to determine the travel times of wave packets moving from one surface location to another.…