Exotic 'Einstein ring' suggests that mysterious dark matter interacts with itself

[Admin]

The unexplained mass of a remarkably massive galaxy suggests that dark matter interacts with itself, according to new observations by the James Webb Space Telescope.

Exotic 'Einstein ring' suggests that mysterious dark matter interacts with itself : Read more

 

[Zdepthcharge]

Looks like it could actually be a ring galaxy and not an example of lensing.

 

[bernie]

Looks like it could actually be a ring galaxy and not an example of lensing.

The bilateral symmetry is a good indicator of gravitational lensing. The diametrically opposing red features are typical of perfect lensing. If the lens was offset these features would be smeared.

 

[danR]

Cold molecular hydrogen is easily ruled out in local galaxies and clusters—and Dark Matter preferred—because CMH is not betrayed by its characteristic absorption spectra.

In the case at hand there is little chance to obtain absorption spectra. Given the extreme antiquity, I would like to suggest that this massive galaxy is still in possession of a sort of embryonic neutral hydrogen 'yolk-sac', if you will, that it has only started to deplete, that is masquerading in the attributes we would normally ascribe to DM.