1999A&A...351L..19G


Query : 1999A&A...351L..19G

1999A&A...351L..19G - Astronomy and Astrophysics, volume 351L19-22 (1999/11-2)

The nature of the hard X-ray power-law tail in M 87.

GUAINAZZI M. and MOLENDI S.

Abstract (from CDS):

Spatially-resolved spectroscopy of the elliptical galaxy M 87 with the MECS instrument on board BeppoSAX demonstrates that the hard X-ray power-law tail, originally discovered by ASCA (Matsumoto et al., 1996PASJ...48..201M; Allen et al., 1999, MNRAS, in press), originates in the innermost 2'. Our results are consistent with it being produced in an Accretion Dominated Flow, although a substantial jet contribution cannot be ruled out. An origin from a Seyfert-like nucleus is disfavored by our data. As a by-product of this result, we present an analysis of the thermal emission coming from the center of the Virgo cluster, which exhibits a strong positive radial temperature gradient, along with a radial decrease of the iron abundance.

Abstract Copyright: ∼

Journal keyword(s): accretion, accretion disks - galaxies: nuclei - galaxies: individual: M 87 - galaxies: clusters: individual: Virgo - X-rays: galaxies

Simbad objects: 4

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Number of rows : 4
N Identifier Otype ICRS (J2000)
RA
ICRS (J2000)
DEC
Mag U Mag B Mag V Mag R Mag I Sp type #ref
1850 - 2026
#notes
1 NGC 4388 Sy2 12 25 46.820 +12 39 43.45 11.91 11.76 11.02     ~ 1433 2
2 NAME Virgo Cluster ClG 12 30 47.8 +12 23 07           ~ 7107 0
3 [B56] A PoG 12 30 48.621 +12 23 32.29   16.77       ~ 61 0
4 M 87 AGN 12 30 49.42338414 +12 23 28.0436859 10.16 9.59 8.63   7.49 ~ 7815 3

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