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Gravitational microlensing of quasar broad‐line regions: the influence of fractal structures

Identifieur interne : 009975 ( Main/Exploration ); précédent : 009974; suivant : 009976

Gravitational microlensing of quasar broad‐line regions: the influence of fractal structures

Auteurs : Geraint F. Lewis [Australie] ; Rodrigo A. Ibata [France, Australie]

Source :

Monthly Notices of the Royal Astronomical Society [ 0035-8711 ] ; 2006-04.

RBID : ISTEX:A4E7793426EA6F3243EAD70902B2D3F362E9BB84

Descripteurs français

Pascal (Inist)
- Courbe lumière, Fractal, Microlentille, Milieu turbulent, Mirage gravitationnel, Modèle physique, Profil raie, Quasar, Raie absorption, Raie émission, Région raie large.

English descriptors

Abstract

Recent models for the emission clouds within the broad‐line region (BLR) of quasars suggest that they are due to transient overdensities within an overall turbulent medium. If this were the case, the broad‐line emission would spatially appear fractal, possessing structure on a range of scales. This paper examines the influence of such fractal structure when a quasar is microlensed by a population of intervening masses. It is found that while the highest fractal levels can undergo significant microlensing magnification, when these light curves are superimposed to create an emission‐line profile, the resultant emission‐line profile remains relatively constant for physical models of the BLR. It is concluded that the detection of the possible fractal structure of BLRs via gravitational microlensing is not practical.

Url:

DOI: 10.1111/j.1365-2966.2006.10042.x

Affiliations:

Le document en format XML

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Gravitational microlensing of quasar broad‐line regions: the influence of fractal structures

Gravitational microlensing of quasar broad‐line regions: the influence of fractal structures

Source :

Descripteurs français

English descriptors

Abstract

Links toward previous steps (curation, corpus...)

Le document en format XML

Pour manipuler ce document sous Unix (Dilib)

Pour mettre un lien sur cette page dans le réseau Wicri

	Serveur d'exploration sur les relations entre la France et l'Australie
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