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Resurrection of Non-thermal Emissions from Type Ib/c Supernova Remnants
Haruo Yasuda, Shiu-Hang Lee, Keiichi Maeda
Supernova remnants (SNRs) are important objects in investigating the links among supernova (SN) explosion mechanism(s), progenitor stars, and cosmic-ray acceleration. Non-thermal e…
Dark Age of Type II Supernova Remnants
Haruo Yasuda, Shiu-Hang Lee, Keiichi Maeda
Supernova remnants (SNRs) are important objects in terms of their connections with supernova (SN) explosion mechanism(s), progenitor stars, and cosmic-ray acceleration. Non-thermal…
The final months of massive star evolution from the circumstellar environment around SN Ic 2020oi
Keiichi Maeda, Poonam Chandra, Tomoki Matsuoka +8
We present the results of ALMA band 3 observations of a nearby type Ic supernova (SN) 2020oi. Under the standard assumptions on the SN-circumstellar medium (CSM) interaction and th…
A Grid of Core-Collapse Supernova Remnant Models I: The Effect of Wind-Driven Mass-Loss
Taylor Jacovich, Daniel Patnaude, Pat Slane +4
Massive stars can shed material via steady, line-driven winds, eruptive outflows, or mass-transfer onto a binary companion. In the case of single stars, the mass is deposited by th…
Origin of Spectral Hardening of Secondary Cosmic-Ray Nuclei
Norita Kawanaka, Shiu-Hang Lee
We discuss the acceleration and escape of secondary cosmic-ray (CR) nuclei, such as lithium, beryllium and boron, produced by spallation of primary CR nuclei like carbon, nitrogen,…
Rapid Deceleration of Blast Waves Witnessed in Tycho's Supernova Remnant
Takaaki Tanaka, Tomoyuki Okuno, Hiroyuki Uchida +4
In spite of their importance as standard candles in cosmology and as major major sites of nucleosynthesis in the Universe, what kinds of progenitor systems lead to type Ia supernov…