5 papers
Cosmic-Ray Spectra and Metal Budget Regulated by the Galactic Wind
Yusaku Fukumoto, Katsuaki Asano, Jiro Shimoda
We study the advection effect of the Galactic wind on the local cosmic ray spectra. The spectral hardening from a few hundred GV and softening from a few TV are reproduced by a vel…
Modeling the Accretion of High-Velocity Clouds from a Rotating Halo
Izumi Seno, Shu-ichiro Inutsuka, Jiro Shimoda
High-Velocity Clouds (HVCs) are a major fuel reservoir for star formation in the Galactic disk. Determining their origin and kinematics is thus crucial for understanding Galactic e…
Interplay between Escaping Cosmic Rays and Interstellar Medium: Driving of Galactic Winds and Shaping the Local Proton Spectrum
Jiro Shimoda, Katsuaki Asano, Shu-ichiro Inutsuka
We study the effects of escaping cosmic rays (CRs) on the interstellar medium (ISM) around their source with spherically symmetric CR-hydrodynamical simulations taking into account…
Linear Analyses of Thermal Instability in Stratified Medium
Izumi Seno, Shu-ichiro Inutsuka, Jiro Shimoda
Thermal instability in the circum-galactic medium (CGM) can be responsible for the existence of cold clouds (e.g., high-velocity clouds) embedded in a hot diffuse medium (e.g., X-r…
On Acceleration of Highest-Energy Cosmic Rays in a Novel Scenario of Magnetar Transients
Jiro Shimoda, Tomoki Wada
Transient phenomena in magnetars have been considered as possible acceleration sites of ultrahigh-energy cosmic-rays (CRs), whose energy reaches ~200 EeV, such as the Amaterasu par…