Speaker
Dr.
Victor Oknyansky
(University of Haifa)
Description
We show that, contrary to simple predictions, most AGNs show at best
only a small increase of lags inthe J, H, K, and L bands with
increasing wavelength. We suggest that a possible cause of this near
simultaneity of the variability from the near-IR to the mid-IR is that
the hot dust is in a hollow bi-conical outflow of which we only see
the near side. In the proposed model sublimation or recreation of dust
in some cloud along our line of sight in the hollow cone could be a
factor in explaining the changing look phenomenon of an AGN. The
relative wavelength independence of IR lags simplifies the use of IR
lags for estimating cosmological parameters.
Primary author
Dr.
Victor Oknyansky
(University of Haifa)
Co-authors
Dr.
C. Martin Gaskell
(University of California Santa Cruz)
