DIAGNOSTICS OF COOLING-FLOW COLLISIONAL-IONIZATION EQUILIBRIUM PLASMA IN MAGNETIC CATACLYSMIC VARIABLES
The accretion columns in magnetic cataclysmic variables (MCVs) serve as prime laboratories for examining cooling-flow collisional-ionization-equilibrium (CIE) plasma. Fe-K lines, originating from the hot top region of the column, are essential for the diagnostics. We propose a 160 ksec observation of AM Her to achieve the following science goals: 1) Benchmarking the cooling-flow CIE plasma through temperature and density diagnostics, 2) Analyzing shock heating via Doppler velocity measurements of pre/post-shock materials, 3) Determining plasma shape through optically-thick resonance lines within optically-thin plasma, 4) Inferring white dwarf composition from the Compton hump.
TELESCOP= 'XRISM ' / Mission name INSTRUME= 'XTEND ' / Instrument name OBS_ID = '201035010' / Observation identification string OBJECT = 'AM_HER ' / Object name OBSERVER= 'YUKIKATSU TERADA' / PI name OBS_MODE= 'POINTING' / POINTING or SLEW or ALL RA_OBJ = 274.0554 / [deg] Object Right ascension DEC_OBJ = 49.8678 / [deg] Object Declination RA_PNT = 274.070306556388 / Pointing RA DEC_PNT = 49.8792776716786 / Pointing DEC RA_NOM = 274.055847041509 / [deg] Nominal aspect point R.A. DEC_NOM = 49.8680100032475 / [deg] Nominal aspect point Dec. PA_NOM = 243.250086538332 / [deg] Nominal aspect point roll. TELAPSE = 347650 / Elapsed time DATE-OBS= '2024-10-21T23:49:31' / Start date DATE-END= '2024-10-26T00:23:41' / Stop date ONTIME = 176862.12776 / On-source time EXPOSURE= 176862.12776 / Exposure time PROCVER = '03.00.013.009' / 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= 'gen20240315_xtd20240815_rsl20240815' / Version of CALDB used DATE = '2024-10-31T09:47:44' / Date and time this file was created or updated SIB2_VER= 'V03.01 ' / SIB2 version JAXA