Cheshire Cat 2 NFW models

Please read the commentary on 1 nfw models before proceeding.

In this model, two nfw are used, 1 NFW halo is set to the left, while the other on the right. Other parameters of these two NFW are free.

All other layers are left eye and right eye jaffes, and a layer for cluster members.

In this model, only System ABC are used.

While left eye and right eye are located in these coordinates:

Left eye: -4.3 arcsec, -1.0 arcsec

Right eye: 4.5arcsec, 1.58 arcsec

The best fit nfw are :

left nfw : -2.9arcsec, -2.7 arcsec

right nfw: 3.5 arcsec, 2.5arcsec.

two jaffes are : 294 km/s and 221 km/s . While cluster members : 300 km/s (at upper bound)

All A delens-relens results are satisfactory

but several lensed images delens-relens is poor

B1 has an extra component (mirror image) to the right of the cluster member

This is due to critical curve extending downward to the cluster members. Producing mirror image of B1 right of the cluster members.

Details has been discussed in the other post:

https://www.jackyastronomy.org/post/constrains-on-mass-of-left-eye-and-overall-mass-of-galaxies-in-clusters-in-cheshire-cat

In this version, c also produce a poor result

C1a, the brightest component on arc C. has multiple images that we didn;t observe along the arc.

Next blog: 2 nfw ,using all lensed images identified (ABCEGZ). The result is much better. So this could possibly caused by insufficient constrains.