A Test of the Formation Mechanism of the Broad Line Region in Active Galactic Nuclei

Kód výsledku v IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F67985815%3A_____%2F16%3A00471633" target="_blank" >RIV/67985815:_____/16:00471633 - isvavai.cz</a>

Výsledek na webu

<a href="http://dx.doi.org/10.3847/0004-637X/832/1/15" target="_blank" >http://dx.doi.org/10.3847/0004-637X/832/1/15</a>

DOI - Digital Object Identifier

<a href="http://dx.doi.org/10.3847/0004-637X/832/1/15" target="_blank" >10.3847/0004-637X/832/1/15</a>

Jazyk výsledku

angličtina

Název v původním jazyce

A Test of the Formation Mechanism of the Broad Line Region in Active Galactic Nuclei

Popis výsledku v původním jazyce

The origin of the broad line region (BLR) in active galaxies remains unknown. It seems to be related to the underlying accretion disk, but an efficient mechanism is required to raise the material from the disk surface without giving signatures of the outflow that are too strong. in the case of the low ionization lines. We discuss in detail two proposed mechanisms: (1) radiation pressure acting on dust in the disk atmosphere creating a failed wind and. ( 2) the gravitational instability of the underlying disk. We compare the predicted location of the inner radius of the BLR in those two scenarios with the observed position obtained from the reverberation studies of several active galaxies. The failed dusty outflow model well represents the observational data while the predictions of the self-gravitational instability are not consistent with observations. The issue that remains is. why do we not see any imprints of the underlying disk instability in the BLR properties.

Název v anglickém jazyce

A Test of the Formation Mechanism of the Broad Line Region in Active Galactic Nuclei

Popis výsledku anglicky

The origin of the broad line region (BLR) in active galaxies remains unknown. It seems to be related to the underlying accretion disk, but an efficient mechanism is required to raise the material from the disk surface without giving signatures of the outflow that are too strong. in the case of the low ionization lines. We discuss in detail two proposed mechanisms: (1) radiation pressure acting on dust in the disk atmosphere creating a failed wind and. ( 2) the gravitational instability of the underlying disk. We compare the predicted location of the inner radius of the BLR in those two scenarios with the observed position obtained from the reverberation studies of several active galaxies. The failed dusty outflow model well represents the observational data while the predictions of the self-gravitational instability are not consistent with observations. The issue that remains is. why do we not see any imprints of the underlying disk instability in the BLR properties.

Druh

J_x - Nezařazeno - Článek v odborném periodiku (Jimp, Jsc a Jost)

CEP obor

BN - Astronomie a nebeská mechanika, astrofyzika

OECD FORD obor

—

Projekt

—

Návaznosti

I - Institucionalni podpora na dlouhodoby koncepcni rozvoj vyzkumne organizace

Rok uplatnění

2016

Kód důvěrnosti údajů

S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů

Název periodika

Astrophysical Journal

ISSN

0004-637X

e-ISSN

—

Svazek periodika

832

Číslo periodika v rámci svazku

1

Stát vydavatele periodika

US - Spojené státy americké

Počet stran výsledku

11

Strana od-do

"15/1"-"15/11"

Kód UT WoS článku

000388203200004

EID výsledku v databázi Scopus

2-s2.0-84996538250