X-ray Spectroscopy of the Core of the Perseus Cluster with Suzaku: Elemental Abundances in the Intracluster Medium

The results from Suzaku observations of the central region of the Perseus cluster are presented. Deep exposures with the X-ray Imaging Spectrometer provide high-quality X-ray spectra from the intracluster medium. X-ray lines from helium-like Cr and Mn have been detected significantly for the first t...

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Bibliographic Details
Published in:Astrophysical journal. Letters 2009-11, Vol.705 (1), p.L62-L66
Main Authors: Tamura, T, Maeda, Y, Mitsuda, K, Fabian, A. C, Sanders, J. S, Furuzawa, A, Hughes, J. P, Iizuka, R, Matsushita, K, Tamagawa, T
Format: Article
Language:English
Subjects:
ABUNDANCE
ASTROPHYSICS, COSMOLOGY AND ASTRONOMY
COSMIC RAY SOURCES
COSMIC X-RAY SOURCES
ELEMENTS
FLUIDS
GALAXIES
GALAXY CLUSTERS
GASES
HELIUM
NONMETALS
RARE GASES
SPECTRA
SPECTROSCOPY
STARS
X-RAY GALAXIES
X-RAY SPECTRA
X-RAY SPECTROSCOPY
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Summary:The results from Suzaku observations of the central region of the Perseus cluster are presented. Deep exposures with the X-ray Imaging Spectrometer provide high-quality X-ray spectra from the intracluster medium. X-ray lines from helium-like Cr and Mn have been detected significantly for the first time in clusters. In addition, elemental abundances of Ne, Mg, Si, S, Ar, Ca, Fe, and Ni are accurately measured within 10' (or 220 kpc) from the cluster center. The relative abundance ratios are found to be within a range of 0.8-1.5 times the solar value. These abundance ratios are compared with previous measurements, those in extremely metal-poor stars in the Galaxy, and theoretical models.
ISSN:1538-4357
0004-637X
2041-8205
1538-4357
DOI:10.1088/0004-637X/705/1/L62