PROBING THE JET STRUCTURE IN THE MICROQUASAR SS 433
We propose an 80 ks observation of the Galactic microquasar SS 433, consisting of a 50 ks exposure in the out-of-eclipse phase and 30 ks in the ingress or egress of an eclipse. The main aim is to resolve the Doppler-shifted emission lines from the bipolar jets and thereby investigate the geometry and plasma properties in the X-ray emitting region of the jets. We also determine the direction of the orbital rotation with respect to that of the jet precession, by monitoring how the approaching and receding jets are occulted by the companion star during the ingress or egress of an eclipse.
TELESCOP= 'XRISM ' / Mission name INSTRUME= 'XTEND ' / Instrument name OBS_ID = '201014010' / Observation identification string OBJECT = 'SS433 ' / Object name OBSERVER= 'MEGUMI SHIDATSU' / PI name OBS_MODE= 'POINTING' / POINTING or SLEW or ALL RA_OBJ = 287.9565 / [deg] Object Right ascension DEC_OBJ = 4.9827 / [deg] Object Declination RA_PNT = 287.954511897332 / Pointing RA DEC_PNT = 4.9804234866911 / Pointing DEC RA_NOM = 287.955814854319 / [deg] Nominal aspect point R.A. DEC_NOM = 4.98264147452775 / [deg] Nominal aspect point Dec. PA_NOM = 80.5319819996512 / [deg] Nominal aspect point roll. TELAPSE = 202482.921875 / Elapsed time DATE-OBS= '2025-03-26T14:06:08.078125' / Start date DATE-END= '2025-03-28T22:20:51' / Stop date ONTIME = 86729.300418 / On-source time EXPOSURE= 86729.300418 / 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 = '2025-04-11T09:02:15' / Date and time this file was created or updated SIB2_VER= 'V03.01 ' / SIB2 version JAXA