SIMBAD references

2011ApJ...733...48T - Astrophys. J., 733, 48 (2011/May-3)

X-ray characteristics of NGC 3516: a view through the complex absorber.


Abstract (from CDS):

We consider new Suzaku data for NGC 3516 taken during 2009 along with other recent X-ray observations of the source. The cumulative characteristics of NGC 3516 cannot be explained without invoking changes in the line-of-sight absorption. Contrary to many other well-studied Seyfert galaxies, NGC 3516 does not show a positive lag of hard X-ray photons relative to soft photons over the timescales sampled. In the context of reverberation models for the X-ray lags, the lack of such a signal in NGC 3516 is consistent with flux variations being dominated by absorption changes. The lack of any reverberation signal in such a highly variable source disfavors intrinsic continuum variability in this case. Instead, the colorless flux variations observed at high flux states for NGC 3516 are suggested to be a consequence of Compton-thick clumps of gas crossing the line of sight.

Abstract Copyright:

Journal keyword(s): galaxies: active - galaxies: individual: NGC 3516 - galaxies: Seyfert - X-rays: galaxies

Status at CDS:  

Simbad objects: 10

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