GAS MOTIONS IN THE WAKE OF THE LARGEST RADIO BUBBLE IN A CLUSTER CORE
Radio jets are powered by gas accretion onto supermassive black holes and inflate large bubbles in galaxy and cluster atmospheres. The energy input is substantial, but must be distributed and dissipated on large scales to suppress gas cooling and slow massive galaxy growth. We propose a 100ks Resolve observation of the Ophiuchus cluster to measure turbulence and bulk motion in the wake of the largest radio bubble on the sky. The bubble's wake reveals no unrelated structure and is well-matched to Resolve's field of view. By measuring the induced gas motions, we will determine the fraction of the bubble's enthalpy that is transferred to the intracluster medium (ICM), whether turbulence or bulk motion dominates and if bubbles can lift gas flows in their wakes to sustain feedback.
TELESCOP= 'XRISM ' / Mission name INSTRUME= 'RESOLVE ' / Instrument name FILTER = 'OPEN ' / Filter name used OBS_ID = '201117010' / Observation identification string OBJECT = 'OPHIUCHUS_CLUSTER_SE' / Object name OBSERVER= 'HELEN RUSSELL' / PI name OBS_MODE= 'POINTING' / POINTING or SLEW or ALL RA_OBJ = 258.1303 / [deg] Object Right ascension DEC_OBJ = -23.3931 / [deg] Object Declination RA_PNT = 258.124192358947 / Pointing RA DEC_PNT = -23.3930582910633 / Pointing DEC RA_NOM = 258.128643754089 / [deg] Nominal aspect point R.A. DEC_NOM = -23.39293470171 / [deg] Nominal aspect point Dec. PA_NOM = 94.8437929872994 / [deg] Nominal aspect point roll. TELAPSE = 249761 / Elapsed time DATE-OBS= '2025-03-28T23:15:30' / Start date DATE-END= '2025-03-31T20:38:11' / Stop date ONTIME = 116627.02988 / On-source time EXPOSURE= 116627.02988 / Exposure time PROCVER = '03.02.014.010' / Processing script version MKFFF = 'ISAS/JAXA' / Origin of First FITS file ORIGIN = 'GSFC/NASA' / Origin of Processed FITS file SOFTVER = 'Hea_12Mar2025_V6.35_XRISM_28Feb2025_V002' / Version of HEADAS used CALDBVER= 'gen20241115_xtd20241115_rsl20241115' / Version of CALDB used DATE = '2025-07-16T06:01:24' / Date and time this file was created or updated SIB2_VER= 'V04.00 ' / SIB2 version JAXA