2004A&A...422...77P


Query : 2004A&A...422...77P

2004A&A...422...77P - Astronomy and Astrophysics, volume 422, 77-84 (2004/7-4)

Highly ionized Fe Kα emission lines from the LINER galaxy M81.

PAGE M.J., SORIA R., ZANE S., WU K. and STARLING R.L.C.

Abstract (from CDS):

We present spectral and timing results from a long (130ks) XMM-Newton EPIC observation of the nucleus of the Seyfert/LINER galaxy M81. During the observation the X-ray flux varied by 20%, but there was no significant change in spectral shape. The 2-10keV spectrum is well described by a power law continuum and three narrow Fe Kα emission lines at 6.4, 6.7 and 6.96keV. The three emission lines have equivalent widths of 39+13–12, 47+13–13 and 37+15–15eV respectively. The ratios of the three lines are thus more similar to those observed from the Galactic Centre region than to those typically observed from Seyfert galaxies. The high ionization lines most likely originate either from photoionized gas within 0.1 pc of the nucleus of M 81, or from a non-thermal distribution of cosmic-ray electrons interacting with the 0.2-0.6keV thermal plasma which is found in the bulge of M 81.

Abstract Copyright:

Journal keyword(s): galaxies: individual: M81 (=NGC 3031) - galaxies: nuclei - galaxies: Seyfert - galaxies: active - X-rays: galaxies

Errata: + corrigendum vol. 565, p. C1 (2014)

Simbad objects: 2

goto Full paper

goto View the references in ADS

Number of rows : 2
N Identifier Otype ICRS (J2000)
RA
ICRS (J2000)
DEC
Mag U Mag B Mag V Mag R Mag I Sp type #ref
1850 - 2021
#notes
1 M 81 Sy2 09 55 33.17306143 +69 03 55.0609270   7.89 6.94     ~ 4070 5
2 NAME Sgr A* X 17 45 40.03599 -29 00 28.1699           ~ 3686 3

To bookmark this query, right click on this link: simbad:objects in 2004A&A...422...77P and select 'bookmark this link' or equivalent in the popup menu


2021.07.31-19:01:01

© Université de Strasbourg/CNRS

    • Contact