14 citations · 25 across the 4 of their papers we have counts for
7 papers
Magnetic Heating Across the Sun and Solar-like Stars: Universal Scaling Laws from Chromospheres to Coronae
Shin Toriumi, Kosuke Namekata, Yuta Notsu +2
Magnetic activity in cool stars governs the thermal structure and high-energy radiative output of their outer atmospheres, thereby influencing stellar evolution, stellar winds, and…
A Systematic Study of Quiescent and Outburst Properties of X-ray-bright Young Stellar Objects Using XMM-Newton
Koki Sakuta, Ikuyuki Mitsuishi, Seiya Sasamata +6
Young Stellar Objects (YSOs) exhibit strong X-ray emission, widely attributed to magnetic reconnection and magnetospheric accretion; however, owing primarily to limited photon stat…
Chromospheric Mg I Emission Lines of Pre-Main-Sequence Stars
Mai Yamashita, Yoichi Itoh, Yuhei Takagi
To reveal details of the internal structure, the relationship between chromospheric activity and the Rossby number has been extensively examined for main-sequence stars. For active…
Starspots, chromospheric emission lines, and flares of zero-age main-sequence stars
Mai Yamashita, Yoichi Itoh, Yumiko Oasa
Zero-age main-sequence (ZAMS) stars are considered to have enormous starspots and show strong chromospheric emission lines because of their strong surface magnetic field. We discus…
Measurements of Chromospheric Mg I Emission Lines of Zero-Age Main-Sequence Stars
Mai Yamashita, Yoichi Itoh
The chromosphere is the active atmosphere in which energetic eruption events, such as flares, occur. Chromospheric activity is driven by the magnetic field generated by stellar rot…
Rotation-Activity Relation of Ca II and Mg I Infrared Emission Lines of Young Stars
Mai Yamashita, Yoichi Itoh, Yuhei Takagi
To reveal the detail of the internal structure, the relationship between chromospheric activity and the Rossby number, N_R (= rotational period P / convective turnover time tau_c),…