XMM-Newton Observation of IC 310 in the Outer Region of the Perseus Cluster of Galaxies

Abstract

We present results from an XMM-Newton observation of the head-tail radio galaxy IC 310 located in the southwest region of the Perseus cluster. The spectrum is well-fitted by an absorbed power-law model with a photon index of $2.50\pm 0.02$ with no significant absorption excess. The X-ray image shows a point-like emission at IC 310 without any signs of a structure correlated with the radio halo tail. The temperature of the intracluster medium surrounding IC 310 declines as a function of distance from the cluster center, from $kT\sim 6$ keV in the northeast corner of the field of view to about 3 keV in the southwest region. Although we do not find any sharp edges in the surface brightness profile, a brightness excess over a smooth $\beta$ model by about 20% is seen. The temperature also rises by about 10% in the same region. This indicates that the IC 310 region is a subcluster probably infalling into the Perseus cluster, and the gas in front of IC 310 towards the Perseus cluster is likely to be compressed by the large-scale motion, which supports the view that the IC 310 system is undergoing a merger.

arXiv comment7 pages, 8 figures (including color), accepted for publication in PASJ

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Cited by in corpus (12)

• Black hole lightning due to particle acceleration at subhorizon scales
• Energetic Gamma Radiation from Rapidly Rotating Black Holes
• Detection of very high energy gamma-ray emission from the Perseus cluster head-tail galaxy IC 310 by the MAGIC telescopes
• Rapid and multi-band variability of the TeV-bright active nucleus of the galaxy IC 310
• X-Ray Study of Temperature and Abundance Profiles of the Cluster of Galaxies Abell 1060 with Suzaku
• High-resolution VLA low radio frequency observations of the Perseus cluster: radio lobes, mini-halo and bent-jet radio galaxies
• The blazar-like radio structure of the TeV source IC310
• Suzaku Observation of Group of Galaxies NGC 507: Temperature and Metal Distributions in the Intra-cluster Medium
• The Plasma Structure of the Cygnus Loop from the Northeastern Rim to the Southwestern Rim
• First Multi-wavelength Campaign on the Gamma-ray-loud Active Galaxy IC 310
• Probing $\mu$eV ALPs with future LHAASO observation of AGN $\gamma$-ray spectra
• Perseus cluster in its X-ray entirety with SRG/eROSITA. Merger and Radio-Uroboroses