Publication

A joint microlensing analysis of lensing mass and accretion disc models

Vernardos, G., Nov-2018, In : Monthly Notices of the Royal Astronomical Society. 480, 4, p. 4675-4683 9 p.

Research output: Contribution to journalArticleAcademicpeer-review

APA

Vernardos, G. (2018). A joint microlensing analysis of lensing mass and accretion disc models. Monthly Notices of the Royal Astronomical Society, 480(4), 4675-4683. https://doi.org/10.1093/mnras/sty2119

Author

Vernardos, G. / A joint microlensing analysis of lensing mass and accretion disc models. In: Monthly Notices of the Royal Astronomical Society. 2018 ; Vol. 480, No. 4. pp. 4675-4683.

Harvard

Vernardos, G 2018, 'A joint microlensing analysis of lensing mass and accretion disc models', Monthly Notices of the Royal Astronomical Society, vol. 480, no. 4, pp. 4675-4683. https://doi.org/10.1093/mnras/sty2119

Standard

A joint microlensing analysis of lensing mass and accretion disc models. / Vernardos, G.

In: Monthly Notices of the Royal Astronomical Society, Vol. 480, No. 4, 11.2018, p. 4675-4683.

Research output: Contribution to journalArticleAcademicpeer-review

Vancouver

Vernardos G. A joint microlensing analysis of lensing mass and accretion disc models. Monthly Notices of the Royal Astronomical Society. 2018 Nov;480(4):4675-4683. https://doi.org/10.1093/mnras/sty2119


BibTeX

@article{17b8900ff6f548ae9516a75e9fff4c64,
title = "A joint microlensing analysis of lensing mass and accretion disc models",
abstract = "Microlensing of multiply imaged quasars is a unique probe of quasar structure, down to the size of the accretion disc and the central black hole. Flux ratios between close pairs of images of lensed quasars can be used to constrain the accretion disc size and temperature profile. The starting point of any microlensing model is the macromodel of the lens, which provides the convergence and shear values at the location of the multiple images. Here I present a new approach of microlensing modelling independently of the macromodel of the lens. The technique is applied to the close pair of images A(1) and A(2) of MG 0414+0534, for a set of flux ratios with large variation with respect to wavelength. The inferred accretion disc size and temperature profile measurements, as well as the smooth matter fraction at the location of the images, are quite robust under a wide range of macromodel variations. A case of using purely microlensing data (flux ratios) to constrain the macromodel is also presented. This is a first application of the technique on a fiducial system and set of flux ratios; the method is readily applicable to collections of such objects and can be extended to light-curve and/or imaging data.",
keywords = "accretion, accretion discs, gravitational lensing: micro, gravitational lensing: strong, quasars: individual: MG 0414+0534, DARK-MATTER SUBSTRUCTURE, BLACK-HOLE ACCRETION, EARLY-TYPE GALAXIES, GRAVITATIONAL LENS, MG 0414+0534, X-RAY, EMISSION REGIONS, STELLAR MASS, HALO MASS, QUASARS",
author = "G. Vernardos",
year = "2018",
month = "11",
doi = "10.1093/mnras/sty2119",
language = "English",
volume = "480",
pages = "4675--4683",
journal = "Monthly Notices of the Royal Astronomical Society",
issn = "0035-8711",
publisher = "Oxford University Press",
number = "4",

}

RIS

TY - JOUR

T1 - A joint microlensing analysis of lensing mass and accretion disc models

AU - Vernardos, G.

PY - 2018/11

Y1 - 2018/11

N2 - Microlensing of multiply imaged quasars is a unique probe of quasar structure, down to the size of the accretion disc and the central black hole. Flux ratios between close pairs of images of lensed quasars can be used to constrain the accretion disc size and temperature profile. The starting point of any microlensing model is the macromodel of the lens, which provides the convergence and shear values at the location of the multiple images. Here I present a new approach of microlensing modelling independently of the macromodel of the lens. The technique is applied to the close pair of images A(1) and A(2) of MG 0414+0534, for a set of flux ratios with large variation with respect to wavelength. The inferred accretion disc size and temperature profile measurements, as well as the smooth matter fraction at the location of the images, are quite robust under a wide range of macromodel variations. A case of using purely microlensing data (flux ratios) to constrain the macromodel is also presented. This is a first application of the technique on a fiducial system and set of flux ratios; the method is readily applicable to collections of such objects and can be extended to light-curve and/or imaging data.

AB - Microlensing of multiply imaged quasars is a unique probe of quasar structure, down to the size of the accretion disc and the central black hole. Flux ratios between close pairs of images of lensed quasars can be used to constrain the accretion disc size and temperature profile. The starting point of any microlensing model is the macromodel of the lens, which provides the convergence and shear values at the location of the multiple images. Here I present a new approach of microlensing modelling independently of the macromodel of the lens. The technique is applied to the close pair of images A(1) and A(2) of MG 0414+0534, for a set of flux ratios with large variation with respect to wavelength. The inferred accretion disc size and temperature profile measurements, as well as the smooth matter fraction at the location of the images, are quite robust under a wide range of macromodel variations. A case of using purely microlensing data (flux ratios) to constrain the macromodel is also presented. This is a first application of the technique on a fiducial system and set of flux ratios; the method is readily applicable to collections of such objects and can be extended to light-curve and/or imaging data.

KW - accretion, accretion discs

KW - gravitational lensing: micro

KW - gravitational lensing: strong

KW - quasars: individual: MG 0414+0534

KW - DARK-MATTER SUBSTRUCTURE

KW - BLACK-HOLE ACCRETION

KW - EARLY-TYPE GALAXIES

KW - GRAVITATIONAL LENS

KW - MG 0414+0534

KW - X-RAY

KW - EMISSION REGIONS

KW - STELLAR MASS

KW - HALO MASS

KW - QUASARS

U2 - 10.1093/mnras/sty2119

DO - 10.1093/mnras/sty2119

M3 - Article

VL - 480

SP - 4675

EP - 4683

JO - Monthly Notices of the Royal Astronomical Society

JF - Monthly Notices of the Royal Astronomical Society

SN - 0035-8711

IS - 4

ER -

ID: 77075897