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72 papers · 1 filter
Towards inertial-mode helioseismology: Direct sensing of solar rotation at 75 deg latitude and 0.8 Rsun
Prithwitosh Dey, Laurent Gizon, Yuto Bekki
Solar internal rotation at high latitudes is poorly constrained by acoustic-mode helioseismology. Global inertial modes observed on the Sun are highly sensitive to solar differenti…
The 24 Aqr triple system: A closer look at its unique high-eccentricity hierarchical architecture
Ahmad Abushattal, Mashhoor A. Al-Wardat, Elliott P. Horch +4
As its periastron passage occurred during the third quarter of 2020, system 24 Aqr is of particular significance. New visual solutions for the latest speckle interferometry observa…
Oscillations of the solar photospheric magnetic field caused by the m = 1 high-latitude inertial mode
Stephan G. Heinemann, Zhi-Chao Liang, Laurent Gizon
Periodic oscillations at 338 nHz in the Earth frame are observed at high latitudes in direct Doppler velocity measurements. These oscillations correspond to the high-latitude…
Structure and Dynamics of the Sun's Interior Revealed by Helioseismic and Magnetic Imager
Alexander Kosovichev, Sarbani Basu, Yuto Bekki +43
High-resolution helioseismology observations with the Helioseismic and Magnetic Imager (HMI) onboard Solar Dynamics Observatory (SDO) provide a unique three-dimensional view of the…
Long-period double-lined eclipsing binaries: the system V454 Aur with the secondary eclipse caused by the occultation of the hotter component
Kniazev Alexei, Malkov Oleg, Gorda Stanislav +2
We present the results of our study of the long-period eclipsing binary star \Aur. The results are based on spectroscopic data obtained with the UFES échelle spectrograph and photo…
Combined Surface Flux Transport and Helioseismic Far-side Active Region Model (FARM)
Dan Yang, Stephan G. Heinemann, Robert H. Cameron +1
Maps of the magnetic field at the Sun's surface are commonly used as boundary conditions in space-weather modeling. However, continuous observations are only available from the Sun…