ABELL478_CENTER
Galaxy clusters host hot and tenuous gas known as the intracluster medium (ICM), whose X-ray spectra, traditionally modelled as simple collisionally ionised equilibrium (CIE) plasma, have provided insights into cluster evolution. However, the high-resolution Resolve spectrometer of XRISM now reveals intricate features within emission lines, such as the Fe He-alpha triplet, challenging this simplistic view. For example, unexpected excesses in specific line components compared to the CIE prediction hint at non-equilibrium processes or complex gas dynamics. In order to investigate, we target two contrasting clusters: A478, a cool-core cluster with AGN feedback, and A2029, a relaxed system with smooth X-ray morphology. These observations may reshape our understanding of ICM physics.
obsid = 202059010 / Unique Observation/Sequence Number
object = ABELL478_CENTER / Object name
pi_name = FUKUSHIMA KOTARO / Proposal Principal Investigator Name
ra = 63.3555243878787 / Right Ascension (Pointing Position) (deg)
dec = 10.4652543620906 / Declination (Pointing Position) (deg)
roll_angle = 269.998082641263 / Roll Angle (deg)
start_time = 2026-02-14T16:26:04 / Start Time of the Observation
stop_time = 2026-02-17T12:51:04 / Stop Time of the Observation
exposure = 123287.09884 / Effective Total Observation Exposure (s)
public_date= 2099-12-31 / Public Date