Astronomers spot most distant galaxy yet at 13.5 billion light-years away

[Admin]

Researchers have spotted what might be the farthest astronomical object ever found — a galaxy candi named HD1 that they estimate is 13.5 billion light-years away.

Astronomers spot most distant galaxy yet at 13.5 billion light-years away : Read more

 

[rod]

Interesting to compare different reports on this *most distant galaxy*. Here is another report I read this morning.

Astronomers have found what may be the most distant galaxy ever seen, https://www.msn.com/en-us/news/tech...pc=U531&cvid=bfd6bb0dc57445f8b9620bad3c5cbd86

"A galaxy called HD1 may be the most distant object astronomers have ever spotted...Those observations showed that HD1 is about 33.4 billion light years away, more than a billion light years further than the previous most distant object ever spotted, a galaxy called GN-z11. Such a distance is possible, despite the age of the universe being only about 13.8 billion years, because of the accelerating expansion of the cosmos."

That galaxy is said to be 33.4 billion light years from Earth today, that is the comoving radial distance. The arxiv report indicates z ~ 13.0 for this object, https://arxiv.org/abs/2201.00823

"The detection of two z∼13 galaxy candidates has opened a new window on galaxy formation at an era only 330 Myr after the Big Bang..."

The cosmology calculators show the comoving radial distance for z = 13.0. Example, LAMBDA - Links to Calculators (nasa.gov)

The age at redshift shows 0.333 Gyr when it formed after the postulated BB event, and comoving radial distance 33.287 Gly distance from Earth today. The 33.4 billion light year distance used cannot be observed from Earth today and verify that 4D space is indeed, expanding > c velocity. This is a model interpretation only. Issues like this should be clearly reported to the public concerning the Big Bang model used to interpret the redshifts documented. Especially the larger redshifts found where z = 1.4 or larger.

 

[rod]

The arxiv.org paper does present some words of caution concerning the redshift reported about 13 or so. This is not spectroscopic method of determination and needs follow up observations to confirm.

Are the Newly-Discovered z∼13 Drop-out Sources Starburst Galaxies or Quasars?, https://arxiv.org/abs/2201.00823, revised 01-April-2022.

The arxiv.org report states, "Currently, the highest-redshift source ever detected with a spectroscopic confirmation is a galaxy at z = 10.957 (Jiang et al. 2021) with a stellar mass of MBH ≈ 10^9 Msun (Oesch et al. 2016), while the highest-redshift quasar is a galaxy hosting a black hole of mass MBH ≈ 1.6 × 10^9 Msun at z = 7.642...While not confirmed by spectroscopy, one source is backed by a 4σ signal of the [OIII]88µm line at z = 13.27 with the Atacama Large Millimeter Array (ALMA), further supporting the z ∼ 13 estimate. Although a confirmation of the redshift of these two sources will require spectroscopic observations, this claim paves the way to performing a deeper search into existing data to look for very high-z sources that could have been potentially missed thus far…"]