XMM-Newton study of the spectral variability in NLS1 galaxies

Details XMM-Newton study of the spectral variability in NLS1 galaxies XMM-Newton study of the spectral variability in NLS1 galaxies

Apr 2007

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2007iaus..238..429p&link_type=abstract

Black Holes from Stars to Galaxies -- Across the Range of Masses. Edited by V. Karas and G. Matt. Proceedings of IAU Symposium #

Computer Science

1

Scientific paper

Preliminary results from a Root Mean Square (RMS) variability study of a few bright Seyfert 1 galaxies is presented. This model independent tool has been used with the intent of separating the different components that produce the observed flux and spectral variations. In the case of MCG-6-30-15 an enhancement of the fractional variability, compared with the underlying continuum, is observed in the 4.5-5.8 keV energy band. This is a model-independent confirmation of the presence of redshifted relativistic matter accreting into the black hole. The variability structures, present at low energy, could provide the key to disentangle between the different models for the soft excesses in AGN.

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