6 papers
XRISM Observations of Cassiopeia A: Overview, Atomic Data, and Spectral Models
Paul Plucinsky, Manan Agarwal, Liyi Gu +15
Cassiopeia A (Cas A) is the youngest known core-collapse supernova remnant (SNR) in the Galaxy and is perhaps the best-studied SNR in X-rays. Cas A has a line-rich spectrum dominat…
Mapping Cassiopeia A's silicon/sulfur Doppler velocities with XRISM-Resolve
Jacco Vink, Manan Agarwal, Aya Bamba +22
Young supernova remnants (SNRs) provide crucial insights into explosive nucleosynthesis products and their velocity distribution soon after the explosion. However, these velocities…
Measuring the asymmetric expansion of the Fe ejecta of Cassiopeia A with XRISM/Resolve
Aya Bamba, Manan Agarwal, Jacco Vink +24
The expansion structure of supernova remnants (SNRs) is important for understanding not only how heavy elements are distributed into space, but also how supernovae explode. The eje…
Dynamics of the intermediate-mass-element ejecta in the Supernova Remnant Cassiopeia A studied with XRISM
Shunsuke Suzuki, Haruto Sonoda, Yusuke Sakai +5
Supernova remnants (SNRs) provide crucial information of yet poorly understood mechanism of supernova explosion. Here we present XRISM high-resolution spectroscopy of the intermedi…
Measurement of the Forward Shock Velocities of the Supernova Remnant N132D Based on the Thermal X-ray Emission
Yoshizumi Okada, Yuken Ohshiro, Shunsuke Suzuki +4
Measuring shock velocities is crucial for understanding the energy transfer processes at the shock fronts of supernova remnants (SNRs), including acceleration of cosmic rays. Here…
A self-consistent model of shock-heated plasma in non-equilibrium states for direct parameter constraints from X-ray observations
Yuken Ohshiro, Shunsuke Suzuki, Yoshizumi Okada +2
X-ray observations of shock-heated plasmas, such as those found in supernova remnants, often exhibit features of temperature and ionization non-equilibrium. For accurate interpreta…