Cas_A_NE
Cas A is the archetypal young core-collapse supernova remnant (SNR), exhibiting a complex morphology that can be traced back to the asymmetries in the supernova explosion itself and the pre-SN mass-loss history. We propose to observe the northeast region to probe the jet and characterize its plasma properties and composition. The jet presumably originated at the core of the explosion, therefore its properties will offer insights into the explosion asymmetry and dynamics. In addition, the high resolution spectra from Resolve will detect and measure the abundances of the trace and odd-Z elements that will be compared with nucleosynthesis models to constrain the mass and metallicity of the progenitor. These observations of the X-ray brightest SNR will be a legacy of the XRISM mission.
obsid = 202022010 / Unique Observation/Sequence Number
object = Cas_A_NE / Object name
pi_name = PLUCINSKY PAUL / Proposal Principal Investigator Name
ra = 350.941503353791 / Right Ascension (Pointing Position) (deg)
dec = 58.8379360423633 / Declination (Pointing Position) (deg)
roll_angle = 94.9944678714934 / Roll Angle (deg)
start_time = 2026-05-22T00:30:04 / Start Time of the Observation
stop_time = 2026-05-28T06:08:04 / Stop Time of the Observation
exposure = 320834.08832 / Effective Total Observation Exposure (s)
public_date= 2099-12-31 / Public Date