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• W2094865006 abstract "We present temperature and metallicity maps of the Perseus cluster core obtained with the Chandra X-ray Observatory. We find an overall temperature rise from ∼3.0 keV in the core to ∼5.5 keV at 120 kpc and a metallicity profile that rises slowly from ∼0.5 solar to ∼0.6 solar inside 60 kpc, but drops to ∼0.4 solar at 120 kpc. Spatially resolved spectroscopy in small cells shows that the temperature distribution in the Perseus cluster is not symmetrical. There is a wealth of structure in the temperature map on scales of ∼10 arcsec (5.2 kpc) showingswirliness and a temperature rise that coincides with a sudden surface brightness drop in the X-ray image. We obtain a metallicity map of the Perseus cluster core and find that the spectra extracted from the two central X-ray holes as well as the western X-ray hole are best-fit by gas with higher temperature and higher metallicity than is found in the surroundings of the holes. A spectral deprojection analysis suggests, however, that this is due to a projection effect; for the northern X-ray hole we find tight limits on the presence of an isothermal component in the X-ray hole, ruling out volume-filling X-ray gas with temperatures below 11 keV at 3σ." @default.
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• W2094865006 date "2002-11-01" @default.
• W2094865006 modified "2023-09-27" @default.
• W2094865006 title "<i>Chandra</i>temperature and metallicity maps of the Perseus cluster core" @default.
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• W2094865006 doi "https://doi.org/10.1046/j.1365-8711.2002.05804.x" @default.
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