INVESTIGATING JET STRUCTURE OF SS 433
We propose an 80 ks observation of the Galactic microquasar SS 433 around an eclipse phase, consisting of a 50 ks exposure in eclipse and 30 ks out of eclipse, to investigate the jet structure by measuring the line widths of ionized metal lines emitted from different regions in the jets. High resolution X-ray spectroscopy of SS 433 with Resolve gives unique opportunity to understand the jet structure at supercritical accretion rates. The jet collimation of SS 433 can be resolved by comparing the velocity dispersions of Fe XXVI and Si XIV Ly alpha lines, and more direct evidence can be obtained from a comparison between the line structures in eclipse and and non-eclipse phases.
TELESCOP= 'XRISM ' / Mission name INSTRUME= 'XTEND ' / Instrument name OBS_ID = '300041010' / Observation identification string OBJECT = 'SS433 ' / Object name OBSERVER= 'XRISM Collaboration' / PI name OBS_MODE= 'POINTING' / POINTING or SLEW or ALL RA_OBJ = 287.9565 / [deg] Object Right ascension DEC_OBJ = 4.98272 / [deg] Object Declination RA_PNT = 287.943830498101 / Pointing RA DEC_PNT = 4.97515583813232 / Pointing DEC RA_NOM = 287.95612185132 / [deg] Nominal aspect point R.A. DEC_NOM = 4.98314715426901 / [deg] Nominal aspect point Dec. PA_NOM = 80.5347873882481 / [deg] Nominal aspect point roll. TELAPSE = 415775.963135988 / Elapsed time DATE-OBS= '2024-04-10T14:29:40.036864' / Start date DATE-END= '2024-04-15T09:59:16' / Stop date ONTIME = 184118.10899 / On-source time EXPOSURE= 184118.10899 / 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 = '2024-09-23T15:51:54' / Date and time this file was created or updated SIB2_VER= / SIB2 version JAXA