SIMBAD references

2013MNRAS.434.1129K - Mon. Not. R. Astron. Soc., 434, 1129-1137 (2013/September-2)

Discovery of high-frequency iron K lags in Ark 564 and Mrk 335.

KARA E., FABIAN A.C., CACKETT E.M., UTTLEY P., WILKINS D.R. and ZOGHBI A.

Abstract (from CDS):

We use archival XMM-Newton observations of Ark 564 and Mrk 335 to calculate the frequency-dependent time lags for these two well-studied sources. We discover high-frequency Fe K lags in both sources, indicating that the red wing of the line precedes the rest-frame energy by roughly 100 and 150s for Ark 564 and Mrk 335, respectively. Including these two new sources, Fe K reverberation lags have been observed in seven Seyfert galaxies. We examine the low-frequency lag-energy spectrum, which is smooth, and shows no feature of reverberation, as would be expected if the low-frequency lags were produced by distant reflection off circumnuclear material. The clear differences in the low- and high-frequency lag-energy spectra indicate that the lags are produced by two distinct physical processes. Finally, we find that the amplitude of the Fe K lag scales with black hole mass for these seven sources, consistent with a relativistic reflection model where the lag is the light travel delay associated with reflection of continuum photons off the inner disc.

Abstract Copyright: © 2013 The Authors Published by Oxford University Press on behalf of the Royal Astronomical Society (2013)

Journal keyword(s): black hole physics - galaxies: active - X-rays: galaxies

Simbad objects: 7

goto Full paper

goto View the reference in ADS

To bookmark this query, right click on this link: simbad:2013MNRAS.434.1129K and select 'bookmark this link' or equivalent in the popup menu


2021.06.14-17:43:56

© Université de Strasbourg/CNRS

    • Contact