55 citations · 102 across the 5 of their papers we have counts for
5 papers
Evolution and wave-like properties of the average solar supergranule
J. Langfellner, A. C. Birch, L. Gizon
Solar supergranulation presents us with many mysteries. For example, previous studies in spectral space found that supergranulation has wave-like properties. Here we study, in real…
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…
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…
Time-distance helioseismology: A new averaging scheme for measuring flow vorticity
Jan Langfellner, Laurent Gizon, Aaron C. Birch
Time-distance helioseismology provides information about vector flows in the near-surface layers of the Sun by measuring wave travel times between points on the solar surface. Spec…
Amplitude variation and multiplet structures: Is PG1605+072 a slow rotator?
Jan Langfellner, Sonja Schuh, the MSST +1
The subdwarf B star PG1605+072, with an unusually low log g ~ 5.3, shows a high number of non-radial pulsation modes, making it a promising candidate for asteroseismology. This cou…