ATTENZIONE!!! IL SISTEMA E' UTILIZZABILE ESCLUSIVAMENTE IN MODALITA' "CONSULTAZIONE". CAUSA PROBLEMI TECNICI, SI PREGA DI NON EFFETTUARE L'AUTENTICAZIONE, FINO A NUOVA COMUNICAZIONE. GRAZIE
 

The origin of radio emission from radio-quiet active galactic nuclei

Journal
Date Issued
2019
Author(s)
•
•
Laor, Ari
•
•
Behar, Ehud
•
McHardy, Ian
DOI
Abstract
The central nuclei of galaxies, where supermassive black holes (SMBHs) are thought to reside, can experience phases of activity when they become active galactic nuclei (AGNs). An AGN can eject winds and jets and produce radiation across the entire electromagnetic spectrum. The fraction of the bolometric emission in the radio spans a factor of approximately 105 across the different classes of AGNs. The weakest radio sources, radio-quiet (RQ) AGNs, are typically 1,000 times fainter than the radio-loud (RL) AGNs, and represent the majority of the AGN population. In RQ AGNs, the absence of luminous jets allows us to probe radio emission from a wide range of possible mechanisms: star formation, AGN-driven wind, free-free emission from photoionized gas, low-power jets and the innermost accretion disk coronal activity. All these mechanisms can now be probed with unprecedented precision and spatial resolution, owing to the current and forthcoming generation of highly sensitive radio arrays.
Volume
3
Start page
387
Uri
Url
Issn Identifier
2397-3366
Ads BibCode
2019NatAs...3..387P
Rights
open.access
File(s)
Loading...
Thumbnail Image
Name

Panessa_Nat_1902.05917.pdf

Description
preprint
Size

2.96 MB

Format

Adobe PDF

Checksum (MD5)

9d7919e5cf57aa6523167f476b52ec3d

Loading...
Thumbnail Image
Name

Panessa_REV_1557761118_1.pdf

Description
[Administrators only]
Size

4.02 MB

Format

Adobe PDF

Checksum (MD5)

30652716c8d9af5639ae13e5dc6f3d51