New NIRCam image of WFI2033-4723, a quadruply-imaged quasar, was released in a recent article.
https://arxiv.org/abs/2503.00099v1
https://arxiv.org/abs/2503.00099v1
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Do we know?
My understanding is these are multiple images of the same quasar, as a result of gravitational lensing, so the images are identical? Or are you wondering about the leasing object (a galaxy somewhere in between)?
From a very distant object like a quasar, you can measure the differences in path lengths from each lensed image. In response to short-term variation, one image will vary first, followed by the others.