2000A&A...364L..80G

Query : 2000A&A...364L..80G

2000A&A...364L..80G - Astronomy and Astrophysics, volume 364L80-84 (2000/12-2)

On the hypothesis of an advection-dominated flow in the core of NGC 1052: new constraints from a BeppoSAX observation.

GUAINAZZI M., OOSTERBROEK T., ANTONELLI L.A. and MATT G.

Abstract (from CDS):

We report the results of a broadband (0.1-100keV) X-ray observation of the nearby elliptical galaxy NGC 1052, performed with the BeppoSAX observatory. We confirm the presence of a bright (2-10keV luminosity ∼4x1042erg/s) and strongly absorbed (NH∼2x1023cm–2) X-ray source. The flatness of the X-ray spectrum (photon index, Γ, ≃1.4), the estimated low accretion rate ({dot}(m)={dot}(M)/{dot}(M)Edd∼10–4) and the radio-to-X-ray spectral energy distribution suggest that this observation may represent the first direct measurement above 10keV of an accretion-dominated flow in an elliptical galaxy.

Abstract Copyright: ∼

Journal keyword(s): accretion, accretion disks - galaxies: active - galaxies: elliptical and lenticular, cD - galaxies: individual: NGC 1052 - galaxies: nuclei - X-rays: galaxies

Simbad objects: 6

goto View the references in ADS

Number of rows : 6
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 1052 Bla 02 41 04.79849989 -08 15 20.7519527 11.84 11.41 10.47 10.71   ~ 1397 2
2 NGC 1399 rG 03 38 29.083 -35 27 02.67 11.05 9.74 9.59 8.12   ~ 1636 1
3 M 49 Sy2 12 29 46.8 +08 00 01   13.21 12.17     ~ 2174 2
4 M 60 GiC 12 43 39.9708251934 +11 33 09.688174067   10.3       ~ 1395 1
5 NGC 4696 rG 12 48 49.2724775784 -41 18 39.304053252   11.21   10.7   ~ 510 3
6 NGC 5252 Sy2 13 38 15.8707724328 +04 32 33.521265600   15.21 14.21     ~ 514 1

To bookmark this query, right click on this link: simbad:objects in 2000A&A...364L..80G and select 'bookmark this link' or equivalent in the popup menu