XRISM xtend observation 201050010

Object

ABELL3667_CF_IN

Abstract

Cluster mergers are the most energetic events in the Universe since the Big Bang. A large fraction of the merger energy is dissipated in the ICM, a process that depends on a number of unknown microphysical properties of the ICM. Resolve will provide the first opportunity to detect and map the bulk and turbulent velocities in the ICM of nearby merging systems. We propose to observe a textbook example of a cold front in Abell 3667, a striking phenomenon caused by a merger. Resolve observations of this cold front would yield the bulk and turbulent velocities as a function of the distance from the interface, determining the origin of the front and providing a basis for the derivation of microphysical constraints from cold fronts, and answer a host of other interesting questions.

Summary of xrismmastr

      obsid   = 201050010 / Unique Observation/Sequence Number
      object  = ABELL3667_CF_IN / Object name
      pi_name = ICHINOHE YUTO / Proposal Principal Investigator Name
      ra  = 303.265250290011 / Right Ascension (Pointing Position) (deg)
      dec = -56.886160163939 / Declination (Pointing Position) (deg)
      roll_angle = 250.001110527839 / Roll Angle (deg)
      start_time = 2024-10-31T17:54:04 / Start Time of the Observation
      stop_time  = 2024-11-04T19:01:04 / Stop Time of the Observation
      exposure   = 298902.8154708 / Effective Total Observation Exposure (s)
      public_date= 2025-11-13 / Public Date

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