3 papers
astro-ph.SR2026
Long-term investigation of gamma Cas analogs
Yael Naze, Gregor Rauw, Robbie Webbe +2
The subcategory of gamma Cas analogs gathers Be stars with bright and hard X-ray emission. Long-term variations are expected in such objects for two reasons: their Be disk builds a…
astro-ph.SR2026
Orbital motion detected in gamma Cas Fe K emission lines
Yael Naze, Masahiro Tsujimoto, Gregor Rauw +1
A subset of Be stars, typified by the naked-eye star gamma Cas, exhibits unusually bright and hard X-ray emission, the origin of which has remained debated for five decades. We per…
astro-ph.SR2024
How does the solar chromospheric activity look like under different inclination angles?
G. Vanden Broeck, S. Bechet, G. Rauw +1
Chromospheric plages are distributed between mid-latitude and the Equator and never close to the Poles. Therefore, we suspect that the inclination angle of the solar rotation axis…