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Relationship between Radar Cross Section and Optical Magnitude based on Radar and Optical Simultaneous Observations of Faint Meteors
Ryou Ohsawa, Akira Hirota, Kohei Morita +40
Radar and optical simultaneous observations of meteors are important to understand the size distribution of the interplanetary dust. However, faint meteors detected by high power l…
Comparison between the first and second mass eruptions from progenitors of Type IIn supernovae
Naoto Kuriyama, Toshikazu Shigeyama
Some massive stars experience episodic and intense mass loss phases with fluctuations in the luminosity. Ejected material forms circumstellar matter around the star, and the subseq…
Intermediate Luminosity Red Transients by Black Holes Born from Erupting Massive Stars
Daichi Tsuna, Ayako Ishii, Naoto Kuriyama +2
We consider black hole formation in failed supernovae when a dense circumstellar medium (CSM) is present around the massive star progenitor. By utilizing radiation hydrodynamical s…
The HSC-SSP Transient Survey: Implications from Early Photometry and Rise Time of Normal Type Ia Supernovae
Ji-an Jiang, Naoki Yasuda, Keiichi Maeda +9
With a booming number of Type Ia supernovae (SNe Ia) discovered within a few days of their explosions, a fraction of SNe Ia that show luminosity excess in the early phase (early-ex…