26 citations · 92 across the 17 of their papers we have counts for
15 papers · 1 filter
Testing a Pre-Supernova Contribution to Ti in Cassiopeia A
Toshiki Sato, Joshua Issa, Falk Herwig +4
The radioactive isotope Ti in Cassiopeia A has been used as a tracer of the innermost ejecta and explosion asymmetries in core-collapse supernova explosions. However, recent…
Interaction-powered Type Ibn Supernovae as a Transient PeVatron Candidate: The Case of SN 2023uqf
Ryo Sawada, Yusuke Inoue, Yosuke Ashida
We investigate whether the Type Ibn supernova SN 2023uqf, reported close in time and direction to the 442 TeV IceCube alert IC-231004A, is physically consistent with a shock-…
Impacts of hydrogen envelope on supernova fallback and the resulting compact remnant masses
Kengo Shinoda, Yudai Suwa, Ryosuke Hirai +4
Fallback in core-collapse supernovae plays a central role in setting compact-remnant masses and may produce late-time emission. In hydrogen rich progenitors, the reverse shock aris…
Inhomogeneous stellar mixing in the final hours before the Cassiopeia A supernova
Toshiki Sato, Kai Matsunaga, Hiroyuki Uchida +10
Understanding stars and their evolution is a key goal of astronomical research and has long been a focus of human interest. In recent years, theorists have paid much attention to t…
Towards Multi Energy Neutrino Astronomy: Diagnosing Enhanced Circumstellar Material around Stripped-Envelope Supernovae
Ryo Sawada, Yosuke Ashida
A novel approach is proposed to reveal a secret birth of enhanced circumstellar material (CSM) surrounding a collapsing massive star using neutrinos as a unique probe. In this sche…
Progenitor Constraint Incorporating Shell Merger: The Case of Supernova Remnant G359.0-0.9
Kai Matsunaga, Hiroyuki Uchida, Rei Enokiya +5
It is generally hard to put robust constraints on progenitor masses of supernovae (SNe) and remnants (SNRs) observationally, while they offer tantalizing clues to understanding exp…