IGR_J16318-4848
We request 100 ks of observations of the highly obscured source IGR J16318-4848 at three distinct orbital phases (0, 0.25, 0.5). The primary goal is to confirm the modulation tentatively detected with Chandra, which was limited by signal-to-noise. This confirmation is crucial: it will establish the source's orbit, resolve the long-standing question of the nature of the compact object in IGR J16318-4848, and precisely localize the line-emitting region. The Fe Kbeta modulation is expected to vary with orbital phase similarly, something that could not be assessed with Chandra. As secondary science, we will construct a deep spectrum of the source providing unprecedented insight into the system's structure and composition.
obsid = 203126010 / Unique Observation/Sequence Number
object = IGR_J16318-4848 / Object name
pi_name = PRADHAN PRAGATI / Proposal Principal Investigator Name
ra = 247.951006536684 / Right Ascension (Pointing Position) (deg)
dec = -48.817133164545 / Declination (Pointing Position) (deg)
roll_angle = 266.402804072633 / Roll Angle (deg)
start_time = 2026-08-14T12:10:04 / Start Time of the Observation
stop_time = 2026-08-15T20:49:04 / Stop Time of the Observation
exposure = 50390.95684 / Effective Total Observation Exposure (s)
public_date= 2099-12-31 / Public Date