G344.7-0.1
Although Type Ia SNe have attracted a great deal of interest, the explosion mechanism is still controversial. So far, two possible scenarios have been put forward: explosion of a white dwarf close to the Chandrasekhar limit (near-Ch) or smaller than the limit (sub-Ch). According to the latest theories, abudances and velocity structures significantly differ between the near-/sub-Ch models. Here we propose a XRISM observation of G344.7-0.1, which is one of the brightest Type Ia SNR. While previous studies suggest detections of Cr and Mn, the measurement is still uncertain and better precision measurements are required. This observation will reveal abundances of rare elements and their velocity structures, both of which are critical to elucidate the explosion mechanism of Type Ia SNe.
obsid = 201062010 / Unique Observation/Sequence Number
object = G344.7-0.1 / Object name
pi_name = ANAZAWA MOE / Proposal Principal Investigator Name
ra = 255.958205470503 / Right Ascension (Pointing Position) (deg)
dec = -41.716893659028 / Declination (Pointing Position) (deg)
roll_angle = 269.997167399083 / Roll Angle (deg)
start_time = 2025-08-27T18:11:04 / Start Time of the Observation
stop_time = 2025-08-30T13:01:04 / Stop Time of the Observation
exposure = 121753.02788 / Effective Total Observation Exposure (s)
public_date= 2026-09-12 / Public Date