MR2251-178
The wind-driven feedback process by the ultra-fast outflows (UFOs) is believed to be key in the co-evolution of black holes and galaxies, transferring all their energy or momentum to the galactic outflows. However, the XRISM observation of the archetypal UFO source PDS 456 revealed the UFO's clumpy nature and its extremely large kinetic power, challenging simple feedback models. To reveal the true picture of the wind-driven feedback process, we propose a 200 ks observation of MR 2251-178, the brightest source showing both a UFO and a galactic outflow. Using Resolve's high resolution and Xtend's wide-band capabilities, we can detect the clumpy UFO feature and a broad UFO emission, allowing us to estimate the UFO's kinetic power and compare the UFO properties at different accretion rates.
obsid = 202055010 / Unique Observation/Sequence Number
object = MR2251-178 / Object name
pi_name = HAGINO KOUICHI / Proposal Principal Investigator Name
ra = 343.524312211974 / Right Ascension (Pointing Position) (deg)
dec = -17.5822301048969 / Declination (Pointing Position) (deg)
roll_angle = 245.635244139732 / Roll Angle (deg)
start_time = 2025-11-18T11:41:04 / Start Time of the Observation
stop_time = 2025-11-23T00:49:04 / Stop Time of the Observation
exposure = 230330.65574 / Effective Total Observation Exposure (s)
public_date= 2026-12-03 / Public Date