NGC4565
The circumgalactic medium (CGM) plays a key role in the evolution and formation of galaxies. Gamma and X-ray observatories discovered spectacular structures in the emission of the tenuous gas surrounding the Milky Way: the so-called Fermi and eROSITA bubbles. Galaxy formation simulations suggest that MW-like bubbles could be ubiquitous, but so far no instrument offered the combination of a large field of view, low background, and high sensitivity required for their detection in other galaxies. We propose to search for MW-like bubbles in two nearby, edge-on, disk galaxies, analogs of the Milky Way and Andromeda. Exploiting XRISM Xtend capabilities, we will explore the presence of MW-like bubbles by characterizing the spatial and spectral properties of the large-scale CGM emission.
obsid = 201105010 / Unique Observation/Sequence Number
object = NGC4565 / Object name
pi_name = BOGDAN AKOS / Proposal Principal Investigator Name
ra = 189.086360318284 / Right Ascension (Pointing Position) (deg)
dec = 25.9877603735406 / Declination (Pointing Position) (deg)
roll_angle = 314.99910135462 / Roll Angle (deg)
start_time = 2025-05-20T07:00:04 / Start Time of the Observation
stop_time = 2025-05-21T16:23:04 / Stop Time of the Observation
exposure = 61125.919568 / Effective Total Observation Exposure (s)
public_date= 2026-06-03 / Public Date