| dc.contributor | VAHRAM CHAVUSHYAN | |
| dc.creator | JONATHAN FRANCISCO LEON TAVARES | |
| dc.date | 2009-03 | |
| dc.date.accessioned | 2023-07-25T16:21:29Z | |
| dc.date.available | 2023-07-25T16:21:29Z | |
| dc.identifier | http://inaoe.repositorioinstitucional.mx/jspui/handle/1009/398 | |
| dc.identifier.uri | https://repositorioslatinoamericanos.uchile.cl/handle/2250/7805616 | |
| dc.description | Despite the overwhelming observational evidence supporting the unified scheme of Ac-
tive Galactic Nuclei (AGN), there is no compelling reason for AGN constituents to be the
same in every AGN. The observed properties of AGN at different wavelengths (from radio
to γ-rays) can depend on the location of the respective emitting regions and density and
composition of the emitting material. In this dissertation we study the couplings between
the emission from the central engine of radio-loud AGN. The main results of this disserta-
tion come as follows: (i) The double-peaked emission lines originate most likely in the outer
parts of the accretion disk, have been used as tools for studying the structure and dynamics
of accretion disk. The distribution of Eddington ratios for a large sample of AGN in the
sample has a two component structure peaked at low and high Eddington ratios. The break
in the distribution at Lbol/LEdd ∼ 10−3 coincides with the typical Eddington ratio for AGN
with broad and double-peaked emission lines. We propose an evolutive scenario where the
double-peaked phenomenon is a short-term state transiting between high and low efficiency
accreting systems, when the difference between different accretion states manifest itself in
a spectral (AGN type) difference between efficient and inefficiently accreting objects. (ii)
There is a significant difference in Eddington ratio between radio-quiet and radio-loud
AGN with double-peaked Balmer emission lines. In this dissertation, we show that double-
peaked emission can be generated as well in an accelerating outflow material located in the
radio jet. (iii) We combine for the first time high resolution VLBI monitoring of compact
jets with optical continuum observations and study in detail radio-optical correlations in
AGN. | |
| dc.format | application/pdf | |
| dc.language | eng | |
| dc.publisher | Instituto Nacional de Astrofísica, Óptica y Electrónica | |
| dc.relation | citation:Leon-Tavares J. | |
| dc.rights | info:eu-repo/semantics/openAccess | |
| dc.rights | http://creativecommons.org/licenses/by-nc-nd/4.0 | |
| dc.subject | info:eu-repo/classification/Núcleos galácticos activos/Active galactic nuclei | |
| dc.subject | info:eu-repo/classification/Astrophysical jets/Astrophysical jets | |
| dc.subject | info:eu-repo/classification/Radiogalaxias/Radiogalaxies | |
| dc.subject | info:eu-repo/classification/cti/1 | |
| dc.subject | info:eu-repo/classification/cti/21 | |
| dc.subject | info:eu-repo/classification/cti/21 | |
| dc.title | Physics of the central engine and nuclear regions in radio-loud active galactic nuclei | |
| dc.type | info:eu-repo/semantics/doctoralThesis | |
| dc.type | info:eu-repo/semantics/acceptedVersion | |
| dc.audience | students | |
| dc.audience | researchers | |
| dc.audience | generalPublic | |
