COMA_OFFSET_N
Though crucial for cluster physics, direct measurements of the intracluster medium (ICM) velocity structure are scarce. Recent advancements have enabled ICM velocity measurements in various clusters using the XMM-Newton EPIC-pn instrument. This employs Cu Ka line for recalibration. In the Coma cluster, distinct velocities, likely linked to subgroup mergers, have been identified. To explore further, the exceptional capabilities of the XRISM instruments are vital. Hence, we propose a 135 ks observation of the Coma cluster to map its ICM velocity structure and investigate potential merging scenarios.
obsid = 201114010 / Unique Observation/Sequence Number
object = COMA_OFFSET_N / Object name
pi_name = GATUZZ EFRAIN / Proposal Principal Investigator Name
ra = 194.941356303973 / Right Ascension (Pointing Position) (deg)
dec = 28.0489715160174 / Declination (Pointing Position) (deg)
roll_angle = 105.844539552447 / Roll Angle (deg)
start_time = 2025-01-14T10:56:04 / Start Time of the Observation
stop_time = 2025-01-17T16:05:04 / Stop Time of the Observation
exposure = 144846.89477 / Effective Total Observation Exposure (s)
public_date= 2026-01-23 / Public Date