IGR_J16320-4751
We propose four 25ks XRISM observations of the highly absorbed high-mass X-ray binary (HMXB) IGR J16320-4751. The system exhibits strong X-ray variability from clumpy stellar winds and a narrow, albeit variable Fe Kalpha line (<200 km/s). Using Resolve's high spectral resolution, we will measure the branching ratio of Fe K alpha to probe clump ionization, separate narrow and broad line components to identify their origins, and search for a Compton shoulder to the Fe K alpha line. These observations will map the structure, composition, and dynamics of the dense stellar wind that drives accretion in highly obscured HMXB
obsid = 203136010 / Unique Observation/Sequence Number
object = IGR_J16320-4751 / Object name
pi_name = PRADHAN PRAGATI / Proposal Principal Investigator Name
ra = 248.008589249954 / Right Ascension (Pointing Position) (deg)
dec = -47.8749141414564 / Declination (Pointing Position) (deg)
roll_angle = 280.0013788029 / Roll Angle (deg)
start_time = 2026-10-03T11:32:04 / Start Time of the Observation
stop_time = 2026-10-04T09:07:04 / Stop Time of the Observation
exposure = 31902.045369 / Effective Total Observation Exposure (s)
public_date= 2099-12-31 / Public Date