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The handle http://hdl.handle.net/1887/38734 holds various files of this Leiden University dissertation
Author: López Gonzaga, Noel
Title: The structure of the dusty cores of active galactic nuclei Issue Date: 2016-04-12
Propositions
The structure of the dusty cores of active galactic nuclei
1. The highly asymmetric infrared emission of NGC 1068 is not produced by the classical torus, but most probably by hydrodynamical instabi- lities of a dusty outflow. (Chapter 2 )
2. A high covering fraction observed in NGC 1068 means that Type 2 objects should also be observed at low inclinations and that they should be bigger in number compared to Type 1s. (Chapter 2 )
3. Polar emission extending from the inner regions up to parsec scales, seems to be a common feature for Seyfert Galaxies. (Chapter 3 ) 4. Type 1 AGNs with a low number of dusty clouds could be originated
by differences in the accretion rate or by being in a different stage in the evolution of AGNs. (Chapter 4 )
5. Observed differences in Seyfert type 1 objects are determined mostly by the location of the bulk emission rather than by an obscuration effect. (Chapter 5 )
6. Observations resulting in non-detections can lead to interesting con- clusions and therefore should be made public.
7. Results from infrared interferometric studies of AGNs have been barely used by non-interferometrists, who do not make the effort to apply and understand interferometric results by themselves.
8. A big breakthrough in the study of the dust in AGNs will come, when an infrared interferometric facility with kilometer-long baselines is available.
9. A simple model describing a large data set is more useful than a so- phisticated model with limited data available.
10. Currently, it is easier to discover a new planet than to organize an Elfstedentocht.
11. Stereotyping based on the nationality or religion is the result of igno- rance about a particular society group.
Noel L´opez Gonzaga Leiden, April 2016
