Bibcode
Prieto, M. A.
Bibliographical reference
Journal of Physics: Conference Series, Volume 372, Issue 1, pp. 012012 (2012).
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7
2012
Citations
0
Refereed citations
0
Description
Spectral energy distributions (SEDs) of the central few tens of parsecs
of some of the nearest active galactic nuclei [AGN] have been used to
construct a genuine redshift-zero SED template [1]. This paper presents
the comparison between this redshift-zero template and those of the
radio loud and radio quiet quasar templates by [2]. Despite the four
orders of magnitude difference in power between the redshift-zero AGNs,
mostly Seyfert galaxies, and that of quasars, they all show a remarkable
similarity. The distinction relays on the importance of the so-called
blue bump component - emission from the accretion disk - which is
absent in Seyfert type 2, mildly present in Seyfert type 1, seen in full
realm in quasars. Conversely, the characteristic red bump component -
dust reprocessed emission in the IR - is present in all cases. The
difference between the three AGN classes can be ascribed in terms of
central dust obscuration and progressive view angle of the nuclear core.