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60 papers
Probing the Diversity of Type Ia Supernova Remnants in 3-D Hydrodynamic Simulations with X-ray Spectral Synthesis
Yusei Fujimaru, Shiu-Hang Lee, Gilles Ferrand +7
Type Ia supernovae (SNe), thermonuclear explosions of white dwarfs in binary systems, are widely used as standard candles owing to the empirical width-luminosity relation of their…
The role of the secondary white dwarf in a double-degenerate double-detonation explosion, in the supernova remnant phase
Gilles Ferrand, Rüdiger Pakmor, Yusei Fujimaru +7
Type Ia supernovae (SNe) are believed to be thermonuclear explosions of white dwarf (WD) stars, but their progenitor systems and explosion mechanisms are still unclear. Here we foc…
A Classification Scheme for X-ray Bright Type Ia Supernova Remnants Based on Their Circumstellar Interaction
Travis Court, Carles Badenes, Shiu-Hang Lee +2
The parameter space for mass loss in Type Ia supernova progenitors is large, with different progenitor scenarios favoring different mass loss regimes. Here we focus on the impact t…
Study of the origin of the azimuthal variation of synchrotron X-ray spectrum from SNR RX J0852.0-4622
Dai Tateishi, Nobuaki Sasaki, Yukikatsu Terada +5
We report the azimuthal distribution of the X-ray energy spectrum of non-thermal dominant supernova remnant RX J0852.04622. The X-rays from the shock region observed by the X-ra…
Probing Shocked Ejecta in SN 1987A with XRISM-Resolve: the effects of the gate valve closed
Vincenzo Sapienza, Marco Miceli, Aya Bamba +10
Supernova (SN) 1987A is widely regarded as an excellent candidate for leveraging the capabilities of the freshly launched XRISM satellite. Recent researches indicate that the X-ray…
Examining a hadronic -ray scenario for the radiative shell & molecular clouds of the old GeV supernova remnant G298.60.0
Paul K. H. Yeung, Shiu-Hang Lee, Tsunefumi Mizuno +1
Based on the 13.7~yr Fermi-LAT data, Yeung et al. (2023) claimed detection of two -ray sources (Src-NE and Src-NW) associated with the supernova remnant (SNR) G298.60.0, and…
Three-Dimensional Velocity Diagnostics to Constrain the Type Ia Origin of Tycho's Supernova Remnant
Hiroyuki Uchida, Tomoaki Kasuga, Keiichi Maeda +3
While various methods have been proposed to disentangle the progenitor system for Type Ia supernovae, their origin is still unclear. Circumstellar environment is a key to distingui…
Probing Shocked Ejecta in SN 1987A: A novel diagnostic approach using XRISM-Resolve
Vincenzo Sapienza, Marco Miceli, Aya Bamba +10
Supernova (SN) 1987A is one of the best candidates to exploit the capabilities of the freshly launched XRISM satellite. This celestial object offers the unique opportunity to study…
Exploring the circumstellar environment of Tycho's supernova remnant--I. The hydrodynamic evolution of the shock
Ryosuke Kobashi, Shiu-Hang Lee, Takaaki Tanaka +1
Among Type Ia supernova remnants (SNRs), Tycho's SNR has been considered as a typical object from the viewpoints of its spectroscopic, morphological and environmental properties. A…
Potential of the Cherenkov Telescope Array for studying the young nearby supernova remnants
Dmitry Prokhorov, Shiu-Hang Lee, Shigehiro Nagataki +7
Modern imaging atmospheric Cherenkov telescopes have extensively observed young nearby supernova remnants (SNRs), with ages of about 1000 years or less, in the very-high-energy (VH…
Do Type Ia Supernovae Explode Inside Planetary Nebulae?
Travis Court, Carles Badenes, Shiu-Hang Lee +3
The nature of Type Ia Supernova (SN Ia) explosions remains an open issue, with several contending progenitor scenarios actively being considered. One such scenario involves a SN Ia…
A Multi-Wavelength View on the Rapidly-Evolving Supernova 2018ivc: An Analog of SN IIb 1993J but Powered Primarily by Circumstellar Interaction
Keiichi Maeda, Poonam Chandra, Takashi J. Moriya +15
SN 2018ivc is an unusual type II supernova (SN II). It is a variant of SNe IIL, which might represent a transitional case between SNe IIP with a massive H-rich envelope, and IIb wi…
Line Emission Mapper (LEM): Probing the physics of cosmic ecosystems
Ralph Kraft, Maxim Markevitch, Caroline Kilbourne +107
The Line Emission Mapper (LEM) is an X-ray Probe for the 2030s that will answer the outstanding questions of the Universe's structure formation. It will also provide transformative…
On the formation of over-ionized plasma in evolved supernova remnants
Miho Katsuragawa, Shiu-Hang Lee, Hirokazu Odaka +3
One of the outstanding mysteries surrounding the rich diversity found in supernova remnants (SNRs) is the recent discovery of over-ionized or recombining plasma from a number of dy…
Long-term evolution of non-thermal emission from Type Ia and core-collapse supernova remnants in a diversified circumstellar medium
Ryosuke Kobashi, Haruo Yasuda, Shiu-Hang Lee
The contribution of galactic supernova remnants (SNRs) to the origin of cosmic rays (CRs) is an important open question in modern astrophysics. Broadband non-thermal emission is a…
Long-term evolution of a supernova remnant hosting a double neutron star binary
Tomoki Matsuoka, Shiu-Hang Lee, Keiichi Maeda +2
An ultra-stripped supernova (USSN) is a type of core-collapse SN explosion proposed to be a candidate formation site of a double neutron star (DNS) binary. We investigate the dynam…
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…
Evidence of a Type Ia Progenitor for Supernova Remnant 3C 397
Héctor Martínez-Rodríguez, Laura A. Lopez, Katie Auchettl +6
The explosive origin of the young supernova remnant (SNR) 3C 397 (G41.1-0.3) is debated. Its elongated morphology and proximity to a molecular cloud are suggestive of a core-collap…
Radio Emission from Supernovae in the Very Early Phase: Implications for the Dynamical Mass Loss of Massive Stars
Tomoki Matsuoka, Keiichi Maeda, Shiu-Hang Lee +1
Recent high-cadence transient surveys and rapid follow-up observations indicate that some massive stars may dynamically lose their own mass within decades before supernovae (SNe).…