AT2019WEY
One of the most important, unresolved systematic uncertainty in the field of relativistic reflection studies of accreting stellar-mass black holes (BH) is the effect of unresolved, unaccounted-for narrow spectral features on the ability to measure system parameters, including BH spin and viewing inclination. The sensitivity and energy resolution of Resolve guarantee an immediate and definitive resolution to this issue. Owing to its low inclination, the ideal source for this study is the galactic BH low-mass X-ray binary AT2019wey. We propose obtaining a 30ks XRISM observation of this source with the goals of identifying narrow absorption features in the Fe band, breaking parameter degeneracies, and quantifying the impact of narrow features on BH spin and inclination measurements.
obsid = 202044010 / Unique Observation/Sequence Number
object = AT2019WEY / Object name
pi_name = DRAGHIS PAUL / Proposal Principal Investigator Name
ra = 68.8477864017085 / Right Ascension (Pointing Position) (deg)
dec = 55.3760538385403 / Declination (Pointing Position) (deg)
roll_angle = 251.736015697666 / Roll Angle (deg)
start_time = 2026-03-21T07:21:04 / Start Time of the Observation
stop_time = 2026-03-22T01:42:04 / Stop Time of the Observation
exposure = 34095.166794 / Effective Total Observation Exposure (s)
public_date= 2027-04-10 / Public Date