REVIEW 6 cited by
Asymmetric, arc minute scale structures around NGC 1275
Not yet reviewed by Pith; the record is open.
This paper has not been read by Pith yet. Machine review is queued; the pith claim, tier, and objections will appear here once it completes.
SPECIMEN: schema-true, not a live event
T0 review · schema-true
One-sentence machine reading of the paper's core claim.
pith:XXXXXXXX · record.json · timestamp
Signed reviews
abstract
ROSAT HRI observations show complicated substructure in the X-ray surface brightness within $\sim$5 arcminutes around NGC 1275 -- the dominant galaxy of the Perseus cluster. The typical amplitude of the variations is of the order of 30% of the azimuthally averaged surface brightness at a given distance from NGC 1275. We argue that this substructure could be related to the activity of NGC 1275 in the past. Bubbles of relativistic plasma, inflated by jets, be forced to rise by buoyancy forces, mix with the ambient intracluster medium (ICM), and then spread. Overall evolution of the bubble may resemble the evolution of a hot bubble during a powerful atmospheric explosion. From a comparison of the time scale of the bubble inflation to the rise time of the bubbles and from the observed size of the radio lobes which displace the thermal gas, the energy release in the relativistic plasma by the active nucleus of NGC 1275 can be inferred. Approximate modeling implies a nuclear power output of the order of $10^{45}$ erg s$^{-1}$ averaged over the last $\sim 3~10^7$ years. This is comparable with the energy radiated in X-rays during the same epoch. Detailed measurements of the morphology of the X-ray structure, the temperature and abundance distributions with Chandra and XMM may test this hypothesis.
Forward citations
Cited by 6 Pith papers
-
Revisiting the Group-Dominant Elliptical NGC 5044 in the Radio Band: Continuum Emission and Detection of HI Absorption
Deep radio images of NGC 5044 show a ~25 kpc steep-spectrum diffuse source and a marginal HI absorption detection implying cold atomic gas with a molecular-to-atomic mass ratio above 1.7.
-
XRISM Reveals a Kinematically Coherent Core System of the Nearby Cool-Core Cluster Abell 2199
XRISM observations show the core of Abell 2199 is kinematically coherent with low turbulence, where turbulent heating may offset ~20% of radiative cooling losses.
-
Jet outbursts, non-thermal pressure and the AGN jet duty cycle
AGN jet feedback is predicted to add only 4 to 6 percent non-thermal pressure in typical cluster cores, and the peak value can be used to infer the AGN jet duty cycle.
-
Intracluster Medium Fluctuations on Scales up to 1 Mpc: A Combined eROSITA and SPT/Planck Analysis of Abell 3266
First eROSITA-based X-ray measurement of intracluster density fluctuations in Abell 3266 yields pressure-to-density fluctuation ratio ζ=1.00±0.55 and about 7% non-thermal pressure support.
-
Decoding AGN Feedback with X-arithmetic: From Morphology to Physical Mechanisms
Applying X-arithmetic to 15 deeply observed Chandra halos, the authors classify AGN feedback structures and report multiple shocks in groups versus mainly isobaric structures around cavities in massive clusters.
-
Exploring the physics of ram pressure stripping with radio continuum observations in the SKA era
Perspective on using SKA-Low and SKA-Mid radio continuum to extend ram pressure stripping studies to southern clusters and z~0.5.
Discussion (0). Continue with ORCID to comment.