XRISM XTEND observation 201054010

Title

COLLISIONLESS ELECTRON HEATING AT A REVERSE SHOCK IN THE SUPERNOVA REMNANT RCW 86

Abstract

Collisionless shocks are one of the most attracting phenomena in the universe, as the sites where the shock kinetic energy is transformed into thermal and non-thermal energies. They are important research targets in both physical and astronomical aspects. One of the ideal and most well-studied collisionless shocks are seen in supernova remnants. We propose a 280 ks XRISM observation of the southwestern region of RCW 86, where the Fe-K emission is brightest over the remnant. We will 1) determine Fe-Ka and Kb centroids, flux ratio and broadening, and robustly estimating the efficiency of the collisionless electron heating and reverse shock velocity, and 2) locating the reverse shock surface based on the spatial distribution of the Fe-Kb flux.

FITS header

TELESCOP= 'XRISM   '           / Mission name
INSTRUME= 'XTEND   '           / Instrument name
OBS_ID  = '201054010'          / Observation identification string
OBJECT  = 'RCW86_SW'           / Object name
OBSERVER= 'HIROMASA SUZUKI'    / PI name
OBS_MODE= 'POINTING'           / POINTING or SLEW or ALL
RA_OBJ  =             220.2264 / [deg] Object Right ascension
DEC_OBJ =             -62.6719 / [deg] Object Declination
RA_PNT  =     220.218805331941 / Pointing RA
DEC_PNT =    -62.6730091849071 / Pointing DEC
RA_NOM  =     220.223870735982 / [deg] Nominal aspect point R.A.
DEC_NOM =    -62.6719151823884 / [deg] Nominal aspect point Dec.
PA_NOM  =     114.997255016199 / [deg] Nominal aspect point roll.
TELAPSE =         608822.90625 / Elapsed time
DATE-OBS= '2025-03-09T14:52:46.093750' / Start date
DATE-END= '2025-03-16T15:59:49' / Stop date
ONTIME  =         409239.13933 / On-source time
EXPOSURE=         409239.13933 / 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    = '2025-03-29T18:49:54' / Date and time this file was created or updated
SIB2_VER= 'V03.01  '           / SIB2 version JAXA

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