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George
2017-Feb-10, 03:37 PM
Here (https://mcdonaldobservatory.org/news/releases/20170208) is an article on a new technique that boosts gain by ~ 5 mag. using galactic cluster lensing. By removing the light of the lensing cluster, the far fainter and more distant galaxies can be seen. [This isn't seeing brightened galaxies along the fringe; it's looking straight through the cluster.] These galaxies found are likely the light source behind the reionization period.

I don't know if this new technique has a name. Any suggestions? :)

Cougar
2017-Feb-10, 08:07 PM
Here (https://mcdonaldobservatory.org/news/releases/20170208) is an article on a new technique that boosts gain by ~ 5 mag. using galactic cluster lensing. By removing the light of the lensing cluster, the far fainter and more distant galaxies can be seen.

Well, that is very cool. Of course, the question is, as they stated, "how to correct for the contamination from the light of the cluster galaxies." Never doubt the cleverness of an astronomer/astrophysicist, though. They apparently figured a way to do it, and they're looking deeper in time than was previously possible.


I don't know if this new technique has a name. Any suggestions? :)

Gravitational lens cleaning?

Lens masking?

Time machine amplifier?

____ __ ________ ____. :rimshot:

George
2017-Feb-13, 03:48 PM
Well, that is very cool. Of course, the question is, as they stated, "how to correct for the contamination from the light of the cluster galaxies." Never doubt the cleverness of an astronomer/astrophysicist, though. They apparently figured a way to do it, and they're looking deeper in time than was previously possible.
It is nothing short of remarkable. I would guess there must be some polarization effect from lensing since how else would you know one "red" photon from another?

The important benefit of their work goes to support an earlier paper (https://arxiv.org/pdf/1607.03909.pdf) that establishes ~ 2 trillion galaxies out to z = 8. Their work also supports the mainstream view of the luminosity function to that period, not to mention that the period itself (reionization era) is also important to cosmology. No doubt the morphology observed will be consistent with the BBT. The galactic sizes found range from a few million to no more than about a billion stars.


Gravitational lens cleaning?

Lens masking?

Time machine amplifier?

____ __ ________ ____. :rimshot: I suppose the emphasis should go to the magnification due to lensing more than to the removal of the lens light itself, otherwise I would suggest something like "Lumilessance", but not now, of course.

Nevertheless, both the removal of the cluster's glare and the lensing need to be part of the term since lensing itself isn't that new.

Deglazing? [Removes the glaring blaze from the lens of the lensing.]