XRISM RESOLVE observation 201006010

Title

UNVEILING THE DYNAMICS AND CHEMICAL ENRICHMENT OF THE OPHIUCHUS GALAXY CLUSTER WITH XRISM

Abstract

The Ophiuchus cluster, the second brightest X-ray source, provides a unique study of an exceptionally hot (9keV) cluster. Despite high temperatures indicating merger disruption, it has retained its cool core. Previous observations conflict on the internal gas velocity in the core, ranging from <100 to >2000km/s. We will use the spectral resolution of XRISM to precisely measure the velocity, resolve the discrepancy, and reveal the core destruction processes. The obtained velocity will allow the estimation of instability timescales that drive core evolution. We will also study elemental abundances to see if the population of supernovae differs from cooler clusters. This multi-pronged approach will provide insights into the formation and evolution of this extraordinary cluster.

FITS header

TELESCOP= 'XRISM   '           / Mission name
INSTRUME= 'RESOLVE '           / Instrument name
FILTER  = 'OPEN    '           / Filter name used
OBS_ID  = '201006010'          / Observation identification string
OBJECT  = 'OPHIUCHUS_CLUSTER'  / Object name
OBSERVER= 'YUTAKA FUJITA'      / PI name
OBS_MODE= 'POINTING'           / POINTING or SLEW or ALL
RA_OBJ  =             258.1154 / [deg] Object Right ascension
DEC_OBJ =             -23.3687 / [deg] Object Declination
RA_PNT  =     258.109551619757 / Pointing RA
DEC_PNT =    -23.3687732507997 / Pointing DEC
RA_NOM  =     258.114002197688 / [deg] Nominal aspect point R.A.
DEC_NOM =    -23.3686496138755 / [deg] Nominal aspect point Dec.
PA_NOM  =     94.8431268734683 / [deg] Nominal aspect point roll.
TELAPSE =     473017.004644006 / Elapsed time
DATE-OBS= '2025-03-31T22:53:30.995356' / Start date
DATE-END= '2025-04-06T10:17:08' / Stop date
ONTIME  =         217117.77051 / On-source time
EXPOSURE=         217117.77051 / Exposure time
PROCVER = '03.00.013.010'      / Processing script version
MKFFF   = 'ISAS/JAXA'          / Origin of First FITS file
ORIGIN  = 'GSFC/NASA'          / Origin of Processed FITS file
SOFTVER = 'Hea_21Aug2024_V6.34_XRISM_21Aug2024_V001' / Version of HEADAS used
CALDBVER= 'gen20241115_xtd20241115_rsl20241115' / Version of CALDB used
DATE    = '2025-04-12T12:32:54' / Date and time this file was created or updated
SIB2_VER= 'V03.01  '           / SIB2 version JAXA

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