Ni abundance in the core of the Perseus Cluster: an answer to the significance of resonant scattering

Abstract

Using an XMM-Newton observation of the Perseus cluster we show that the excess in the flux of the 7-8 keV line complex previously detected by ASCA and BeppoSAX is due to an overabundance of Nickel rather than to an anomalously high Fe He$\beta$/Fe He$\alpha$ ratio. This observational fact leads to the main result that resonant scattering, which was assumed to be responsible for the supposed anomalous Fe He$\beta$/Fe He$\alpha$ ratio, is no longer required. The absence of resonant scattering points towards the presence of significant gas motions (either turbulent or laminar) in the core of the Perseus cluster.

29 pages, 10 bw figures, accepted for publication in the Astrophysical Journal

References in corpus (10)

• A deep Chandra observation of the Perseus cluster: shocks and ripples
• The relationship between the optical Halpha filaments and the X-ray emission in the core of the Perseus cluster
• The mass profile of A1413 observed with XMM-Newton: implications for the M-T relation
• Chandra temperature and metallicity maps of the Perseus cluster core
• High Resolution Soft X-ray Spectroscopy of M87 with the Reflection Grating Spectrometers on XMM-Newton
• High resolution soft X-ray spectroscopy of the elliptical galaxy NGC 5044. Results from the reflection grating spectrometer on-board XMM-Newton
• Soft X-ray excess emission in clusters of galaxies observed with XMM-Newton
• On the Temperature Structure of M87
• XMM-Newton observation of the interacting cluster Abell 3528
• Hot and cold bubbles in M87

Cited by in corpus (23)

• Compressible Turbulence in Galaxy Clusters: Physics and Stochastic Particle Re-acceleration
• Mapping small-scale temperature and abundance structures in the core of the Perseus cluster
• Constraints on turbulent pressure in the X-ray halos of giant elliptical galaxies from resonant scattering
• Impact of stochastic gas motions on galaxy cluster abundance profiles
• Solar abundance ratios of the iron-peak elements in the Perseus Cluster
• Gas Density Fluctuations in the Perseus Cluster: Clumping Factor and Velocity Power Spectrum
• Constraining Gas Motions in the Intra-Cluster Medium
• Estimating turbulent velocities in the elliptical galaxies NGC 5044 and NGC 5813
• Improved measurements of turbulence in the hot gaseous atmospheres of nearby giant elliptical galaxies
• X-ray Spectroscopy of the Core of the Perseus Cluster with Suzaku: Elemental Abundances in the Intracluster Medium
• Resonant scattering in the Perseus Cluster: spectral model for constraining gas motions with Astro-H
• A multi-wavelength view of cooling vs. AGN heating in the X-ray luminous cool-core of Abell 3581
• Resonant scattering of X-ray emission lines in the hot intergalactic medium
• Resonance scattering, absorption and off-centre abundance peaks in clusters of galaxies
• Spectral Index Studies of the Diffuse Radio Emission in Abell 2256: Implications to Merger Activity
• Brief history of the metal accumulation in the intracluster medium
• Structures and components in galaxy clusters: observations and models
• Regulation of thermal conductivity in hot galaxy clusters by MHD turbulence
• A possible line-like emission feature at 8 keV in the Seyfert 1.2 UGC 3973
• Detecting Intracluster Gas Motion in Galaxy Clusters: Mock Astro-E2 Observations
• X-ray spectroscopy of galaxy clusters: beyond the CIE modeling
• Determining Distances to Clusters of Galaxies using Resonant X-ray Emission Lines
• The clus model in SPEX: projection and resonant scattering effects on the iron abundance and temperature profiles of galaxy clusters