ARK120
Ark 120, a bright Seyfert galaxy and prototype of the bare AGN subclass, provides a rare, unobscured view of its central engine, making it an ideal target for probing its supermassive black hole environment. The galaxy exhibits complex Fe-K emission features in the 6 7 keV band, including a narrow Fe Kα line at 6.4 keV and red/blue excesses potentially originating from the innermost accretion disk. These components vary on sub-daily timescales, suggesting orbiting hotspots near the black hole. A 120 ks XRISM-Resolve observation will resolve the Fe-K complex with unprecedented accuracy, advancing our understanding of AGN X-ray structure.
obsid = 202006010 / Unique Observation/Sequence Number
object = ARK120 / Object name
pi_name = KROL DOMINIKA / Proposal Principal Investigator Name
ra = 79.048002517139 / Right Ascension (Pointing Position) (deg)
dec = -0.150182447813791 / Declination (Pointing Position) (deg)
roll_angle = 276.791219522826 / Roll Angle (deg)
start_time = 2026-04-03T13:38:04 / Start Time of the Observation
stop_time = 2026-04-06T22:46:04 / Stop Time of the Observation
exposure = 136777.00475 / Effective Total Observation Exposure (s)
public_date= 2027-04-14 / Public Date