TY - JOUR
T1 - High resolution soft X-ray spectroscopy of M 87 with the reflection grating spectrometers on XMM - Newton
AU - Sakelliou, I.
AU - Peterson, J. R.
AU - Tamura, T.
AU - Paerels, F. B.S.
AU - Kaastra, J. S.
AU - Belsole, E.
AU - Böhringer, H.
AU - Branduardi-Raymont, G.
AU - Ferrigno, C.
AU - Den Herder, J. W.
AU - Kennea, J.
AU - Mushotzky, R. F.
AU - Vestrand, W. T.
AU - Worrall, D. M.
N1 - Copyright:
Copyright 2018 Elsevier B.V., All rights reserved.
PY - 2002/9
Y1 - 2002/9
N2 - We present high-resolution X-ray spectroscopic observations of M 87 with the Reflection Grating Spectrometers on XMM-Newton. We detect strong K-shell line emission from N, O, Ne, Mg, some emission from He-like Si, a fully resolved set of Fe L-shell emission spectra, and some emission from C. The angular intensity distribution of the strong emission lines are detectably resolved on scales (15-160) inches. The gas in the inner arcmin of M 87 has a multi-phase structure, as indicated by the similarity of the emission line profiles of Fe L shell ions with widely separated ionization potentials. The global Fe L spectrum is approximately consistent with an isothermal plasma at kTe ∼ 1.8 keV, in addition to a component with a temperature distribution appropriate to an isobaric cooling flow, but with a minimum temperature cutoff of kTmin ≈ 600 eV. The behavior of this cooling-flow component is qualitatively similar to what is seen in other cooling flow clusters. Finally, we do not find any strong evidence for a spatial variation in abundances due to resonance scattering redistribution in the inner arcminute of the core.
AB - We present high-resolution X-ray spectroscopic observations of M 87 with the Reflection Grating Spectrometers on XMM-Newton. We detect strong K-shell line emission from N, O, Ne, Mg, some emission from He-like Si, a fully resolved set of Fe L-shell emission spectra, and some emission from C. The angular intensity distribution of the strong emission lines are detectably resolved on scales (15-160) inches. The gas in the inner arcmin of M 87 has a multi-phase structure, as indicated by the similarity of the emission line profiles of Fe L shell ions with widely separated ionization potentials. The global Fe L spectrum is approximately consistent with an isothermal plasma at kTe ∼ 1.8 keV, in addition to a component with a temperature distribution appropriate to an isobaric cooling flow, but with a minimum temperature cutoff of kTmin ≈ 600 eV. The behavior of this cooling-flow component is qualitatively similar to what is seen in other cooling flow clusters. Finally, we do not find any strong evidence for a spatial variation in abundances due to resonance scattering redistribution in the inner arcminute of the core.
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U2 - 10.1051/0004-6361:20020900
DO - 10.1051/0004-6361:20020900
M3 - Article
AN - SCOPUS:0036725447
SN - 0004-6361
VL - 391
SP - 903
EP - 909
JO - Astronomy and Astrophysics
JF - Astronomy and Astrophysics
IS - 3
ER -