22 citations
5 papers
Cosmic Gamma-ray Background Radiation
Yoshiyuki Inoue
The cosmic gamma-ray background radiation is one of the most fundamental observables in the gamma-ray band. Although the origin of the cosmic gamma-ray background radiation has bee…
AKARI's infrared view on nearby stars : Using AKARI Infrared Camera All-Sky Survey, 2MASS, and Hipparcos catalog
Y. Ita, M. Matsuura, D. Ishihara +11
Results: We found that the (B-V) v.s. (V-S9W) color-color diagram is useful to identify the stars with infrared excess emerged from circumstellar envelopes/disks. Be stars with inf…
3-D Dynamics of Interactions between Stellar Winds and the Interstellar Medium as Seen by AKARI and Spitzer
Toshiya Ueta, Hideyuki Izumiura, Issei Yamamura +9
Recent far-infrared mapping of mass-losing stars by the AKARI Infrared Astronomy Satellite and Spitzer Space Telescope have suggested that far-infrared bow shock structures are pro…
Mass Loss History of the AGB star, R Cas
Toshiya Ueta, Robert E. Stencel, Issei Yamamura +9
We report here on the discovery of an extended far-infrared shell around the AGB star, R Cassiopeia, made by AKARI and Spitzer. The extended, cold circumstellar shell of R Cas span…
Invisible Plasma Content in Blazars? The Case of Markarian 421
M. Kino, F. Takahara
Invisible plasma content in blazar jets such as protons and/or thermal electron-positron () pairs is explored through combined arguments of dynamical and radiative process…