XRISM XTEND observation 201123010

Title

AN ATLAS OF MOTIONS IN A2142 AT HIGH SPECTRAL RESOLUTION WITH XRISM

Abstract

We propose to observe the core of Abell 2142 with XRISM for 100 ks to map turbulence and bulk motions with the exquisite spectral resolution of RESOLVE. XRISM will costrain the level of turbulence in the core of the brightest and nearest clusters and it is thus important to map a variety of dynamical states. A2142 stands up for (1) its high flux in the 2-10 keV band, ideal for a gate-valve closed observation; (2) its intermediate state between a relaxed cool core and a violent merger, mirrored by an unusual radio emission; (3) its rich variety of motions suggested by its extreme sloshing and a close pair of BCGs with extreme difference in velocity along the line of sight. Therefore, A2142 is an ideal target for an AO1 XRISM observation.

FITS header

TELESCOP= 'XRISM   '           / Mission name
INSTRUME= 'XTEND   '           / Instrument name
OBS_ID  = '201123010'          / Observation identification string
OBJECT  = 'ABELL2142'          / Object name
OBSERVER= 'FABIO GASTALDELLO'  / PI name
OBS_MODE= 'POINTING'           / POINTING or SLEW or ALL
RA_OBJ  =             239.5749 / [deg] Object Right ascension
DEC_OBJ =              27.2365 / [deg] Object Declination
RA_PNT  =     239.578753865114 / Pointing RA
DEC_PNT =     27.2371341824086 / Pointing DEC
RA_NOM  =     239.575865599589 / [deg] Nominal aspect point R.A.
DEC_NOM =      27.237035887873 / [deg] Nominal aspect point Dec.
PA_NOM  =     318.001758662062 / [deg] Nominal aspect point roll.
TELAPSE =               222287 / Elapsed time
DATE-OBS= '2025-08-02T18:21:02' / Start date
DATE-END= '2025-08-05T08:05:49' / Stop date
ONTIME  =          105876.2885 / On-source time
EXPOSURE=          105876.2885 / 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    = '2025-08-09T08:20:04' / Date and time this file was created or updated
SIB2_VER= 'V04.00  '           / SIB2 version JAXA

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