113 citations · 869 across the 26 of their papers we have counts for
18 papers · 1 filter
One-sided arc averaging geometries in time-distance local helioseismology
David Korda, Michal Švanda, Thierry Roudier
The study of solar oscillations (helioseismology) has been a very successful method of researching the Sun. Helioseismology teaches us about the structure and mean properties of th…
Photospheric downflows observed with SDO/HMI, HINODE, and an MHD simulation
T. Roudier, M. Švanda, J. M. Malherbe +3
Downflows on the solar surface are suspected to play a major role in the dynamics of the convection zone. We investigate the existence of the long-lasting downflows whose effects i…
Pollux: A weak dynamo-driven dipolar magnetic field and implications for its probable planet
M. Aurière, P. Petit, P. Mathias +7
Context: Pollux is considered as an archetype of a giant star hosting a planet. We then discovered a weak magnetic field at its surface using spectropolarimetry. Aims and Methods:…
Evolution of photospheric flows under an erupting filament in the quiet-Sun region
Jiří Wollmann, Michal Švanda, David Korda +1
We studied the dynamics of the solar atmosphere in the region of a large quiet-Sun filament, which erupted on 21 October 2010. The filament eruption started at its northern end and…
Supergranulation and multiscale flows in the solar photosphere: Global observations vs. a theory of anisotropic turbulent convection
F. Rincon, T. Roudier, A. A. Schekochihin +1
The Sun provides us with the only spatially well-resolved astrophysical example of turbulent thermal convection. While various aspects of solar photospheric turbulence, such as gra…
Polar cap magnetic field reversals during solar grand minima: could pores play a role?
M. Svanda, A. S. Brun, Th. Roudier +1
We study the magnetic flux carried by pores located outside active regions with sunspots and investigate their possible contribution to the reversal of the global magnetic field of…