09:01 〜 09:23
[PEM14-01] Coronal heating under various stellar environments
★Invited Papers
キーワード：太陽コロナ、恒星コロナ、磁気流体数値計算
In the context of the solar-stellar connection, it is necessary to understand the mechanism of coronal heating and coronal activity across diverse stellar conditions. In particular, we focus on the effect of stellar metallicity in coronal heating because it affects the energy loss through radiation in the atmosphere. For this, we study the heating of stellar coronal loops, which are the basic building blocks of the coronal atmosphere, by one-dimensional magnetohydrodynamic simulations. Our simulations have revealed that metallicity has a nonnegligible impact on physical and radiative properties of stellar coronae. To unite the modeling for solar and other stellar coronae, we derived the scaling relations for a hydrostatic coronal loop from the energy balance among heating, radiative cooling and thermal conduction, as an extension of the RTV scaling laws for the Sun. This generalization allows us to characterize the coronal properties under a wide variety of stellar environment.