### LSST light curve simulator

This tool extracts high resolution light curves from the GERLUMPH maps, sampled according to some LSST observing strategy, and is described in detail in Neira, Anguita, & Vernardos (2019).

The source can be set to be either a series of analytical profiles, or uploaded custom user profiles. Once the remaining parameters are also set, the light curves will be computed on Swinburne's gSTAR supercomputer.

The format of the output data is described in the Guide to data. We further provide two python programs to extract and plot the light curve data. These auxilliary programs, together with the main simulations code and instructions on how to install and run it can be found here:

https://github.com/gvernard/lsst_generator

Finally, it is possible to upload a file with predefined parameters that will automatically fill the fields below. We provide an example of such a file here:

example .json file

Currently there is a limit of 10,000 requested light curves per batch.

#### System properties

 RA Right ascension [hours] DEC Declination [°] zl Lens redshift zs Source redshift σ★ Lens stellar velocity dispersion [km/s] ε efficiency factor for σ★ σpecl Lens peculiar velocity dispersion [km/s] σpecs Source peculiar velocity dispersion [km/s] Velocity of the CMB dipole

#### Using a parametric model:

$$r_{1/2} = r_0 \; \left( \frac{\lambda}{\lambda_0} \right)^{\nu} [ld],$$

#### where the parameters are:

 r0 = is a reference disc size in light-days, λ0 = is a reference wavelength in nm, ν = is the thermal slope of the disc,

#### The brightness distribution is:

 a Gaussian a uniform disc

#### Using the Shakura-Sunyaev (SS) model:

$$r_{1/2} = 1.74 \times 10^{-5} \; \lambda^{4/3} \; M_{BH}^{2/3} \; \left( \frac{f_{Edd}}{\eta} \right)^{1/3} [ld],$$

#### where the parameters are:

 MBH = is the mass of the black hole in 109 M⊙, fEdd = is the Eddington luminoscity, η = is the accretion efficiency,

#### The brightness distribution is:

 a Gaussian a unifrom disc
u (365.49)
g (480.03)
r (622.2)
i (754.06)
z (868.21)
y (992.5)

Drag the profile below.

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 θ (incl.): ° φ: °

#### Derived quantities

 Pixel size in the source plane: [ld] Einstein radius in the source plane: [ld]

#### Magnification map

 κ Surface mass density at lensed image γ Shear at lensed image s Percentage of smoothly distributed matter M Mean microlenses' mass [M⊙] φγ Shear angle [°, east of north]

#### LSST specifications

 Opsim alt_schedalt_sched_rollingastro-lsst-01_2039baseline2018acolossus_2664colossus_2665colossus_2667kraken_2026kraken_2035kraken_2042kraken_2044mothra_2049nexus_2097pontus_2002pontus_2489pontus_2568pontus_2573pontus_2579 Opsim output years Number of survey years Mu u-band baseline magnitude Mg g-band baseline magnitude Mr r-band baseline magnitude Mi i-band baseline magnitude Mz z-band baseline magnitude My y-band baseline magnitude

#### Output

 Nlc number of light curves velocities start and end point coordinates
version
 a .json file to fill the form fields