UNDERSTANDING EVOLUTION OF DISK WIND IN BLACK HOLE X-RAY BINARIES
We propose ToO observations of a Galactic transient black hole X-ray binary with a high inclination angle, during the state transition. Resolve high-resolution spectroscopy in the state where wind absorption lines have been observed enables us to obtain essential wind parameters (such as density, velocity, and the ionization stage) to determine the wind structure and launching mechanism. We also search for weak absorption and emission lines from the wind (and also jets) in the states where significant lines have rarely been observed in X-rays. Moreover, we have organized a multi-wavelength monitoring campaign simultaneously with the XRISM observations, from which we can achieve the whole picture of the evolution of the accretion disk, disk wind, and jets.
TELESCOP= 'XRISM ' / Mission name INSTRUME= 'RESOLVE ' / Instrument name FILTER = 'OPEN ' / Filter name used OBS_ID = '201011010' / Observation identification string OBJECT = 'IGR_J17091-3624' / Object name OBSERVER= 'MEGUMI SHIDATSU' / PI name OBS_MODE= 'POINTING' / POINTING or SLEW or ALL RA_OBJ = 257.2817 / [deg] Object Right ascension DEC_OBJ = -36.4071 / [deg] Object Declination RA_PNT = 257.276526079477 / Pointing RA DEC_PNT = -36.4080333837554 / Pointing DEC RA_NOM = 257.281583601932 / [deg] Nominal aspect point R.A. DEC_NOM = -36.4076608081753 / [deg] Nominal aspect point Dec. PA_NOM = 91.3459536095094 / [deg] Nominal aspect point roll. TELAPSE = 89214.1162660122 / Elapsed time DATE-OBS= '2025-02-18T05:33:30.883734' / Start date DATE-END= '2025-02-19T06:20:25' / Stop date ONTIME = 45803.216176 / On-source time EXPOSURE= 45803.216176 / 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 = '2025-02-26T23:18:14' / Date and time this file was created or updated SIB2_VER= 'V03.01 ' / SIB2 version JAXA