J/A+A/553/A53 Microlensing maps for a cusp configuration (Sluse+, 2013)
Mid-infrared microlensing of accretion disc and dusty torus in quasars:
effects on flux ratio anomalies.
Sluse D., Kishimoto M., Anguita T., Wucknitz O., Wambsganss J.
<Astron. Astrophys. 553, A53 (2013)>
=2013A&A...553A..53S 2013A&A...553A..53S
ADC_Keywords: Gravitational lensing ; Active gal. nuclei ; QSOs
Keywords: gravitational lensing: strong - gravitational lensing: micro -
quasars: general
Abstract:
We provide the microlensing maps generated to study microlensing in
the mid-infrared range for a cusp-configuration lensed AGN. The maps
provided correspond to images which are respectively saddle-point and
minimum of the arrival time surface. We also provide simulated images
of sources with a disc-like brightness profile or a ring-like
brightness profile corresponding to an accretion disc or a torus
brightness distribution. These source profiles should be convolved
with microlensing maps of the same spatial resolution to simulate
microlensing of the corresponding source and generate probability
density function (PDF) of microlensing similar to those shown in
Figures 3,4,5,8. These maps can also be used to generate synthetic
microlensing lightcurves (Figure 9) or derive PDF for the Rcusp
relation (Figure 10).
Description:
The microlensing maps (see maps.dat) are generated with the inverse
ray-shooting code developped by Prof. J. Wambsganss (Wambsganss 1990,
PhD thesis). They are computed for a saddle-point image with
(kappa,gamma)=(0.47,0.57) and for a minimum image with
(kappa,gamma)=(0.42,0.50). Those values match those found for images
A & B of the lensed AGN J1131-1231 (assuming a Singular Isothermal
Ellipsoid+shear lens model). Each map has been computed for 3
different fraction of kappa_star (i.e. convergence in form of compact
objects): 0.07, 0.30, 1.0. For each case, there is a high resolution
map of 100eta0x100eta0 (eta0 = microlensing Einstein radius
=3*10+16cm) and a low resolution map of 250eta0x250eta0. Source
profiles (sources.dat) are calculated for the same two resolution
(i.e. low/high). Three source brightness profiles are provided: a
uniform disc, a ring-like uniform compact torus, a ring-like extended
torus. The torus characteristics are described in Table 1 of the main
paper. The source profile is calculated for 3 different luminosities
(10+44.2, 10+45, 10+46erg/s/cm2) and rest-frame wavelengths
(1.0, 2.2, 4.4um) as described in sources.dat. Source profiles which
are larger that the microlensing maps are not calculated and are
listed in nosources.dat.
File Summary:
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FileName Lrecl Records Explanations
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ReadMe 80 . This file
maps.dat 32 12 List of microlensing maps available
sources.dat 48 48 List of source profiles available
nosource.dat 29 6 List of source profiles unavailable (too large)
fits/* . 60 Individual fits files
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Byte-by-byte Description of file: maps.dat
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Bytes Format Units Label Explanations
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1- 7 A7 --- Type Lensed image type
9- 11 I3 % Fcm Fraction of compact matter (in %)
13- 16 A4 --- Res [low/high ] Spatial resolution
18- 32 A15 --- FileName Name of the associated fits file in
subdirectory fits
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Byte-by-byte Description of file: sources.dat nosource.dat
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Bytes Format Units Label Explanations
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1- 15 A15 --- Type Source profile type
17- 19 F3.1 um lambda Wavelength (see paper for assumptions)
21- 24 F4.1 [mW/m2] logL Source Luminosity (see paper for assumptions)
26- 29 A4 --- Res [low/high ] Spatial resolution
31- 48 A18 --- FileName For sources.dat, name of the associated fits
file in subdirectory fits
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Acknowledgements:
Dominique Sluse, sluse(at)ari.uni-heidelberg.de
(End) Dominique Sluse [AIfA Bonn], Patricia Vannier [CDS] 12-Mar-2013