#reionization — Public Fediverse posts

Improved Limits on the 21 cm Signal at z = 6.5–7.0 (the Epoch of #Reionization) with the Murchison Widefield Array Using Gaussian Information: https://iopscience.iop.org/article/10.3847/1538-4357/adff80 -> Astronomers hunting for evidence of the light from the first stars and galaxies have found that the Universe was warm, rather than cold, before it “lit up”: https://www.icrar.org/eor-limit/

JWST discovers how we’re able to see the Universe at all It's only because all of the neutral atoms in intergalactic space became ionized that we can see so far away through space. JWST, at last, has found who the culprit is. bigthink.com/starts-with-... #space #astronomy #jwst #reionization

JWST discovers how we're able ...

NASA’s Webb Reveals Galaxy Population Driving Cosmic Renovation ☀️✨

#Ast #Astrophysics #Galaxy #GalaxyCluster #GravitationalLensing #Reionization #SolarMagneticField #SolarMaximum

⏩ 2 new pictures and 1 new video from NASA (SVS) https://commons.wikimedia.org/wiki/Special:ListFiles?limit=14&user=OptimusPrimeBot&ilshowall=1&offset=20250612130129

#astronomy #cosmology #JWST #galaxies #reionization

An article published in the journal "Nature" reports the results of observations of the primordial galaxy JADES-GS-z13-1. A team of researchers used the James Webb Space Telescope to examine this galaxy, estimating that it dates back to about 330 million years after the Big Bang. The surprise came from the so-called Lyman-alpha radiation because it was much stronger than expected from a galaxy of that era.

https://english.tachyonbeam.com/2025/03/27/an-intense-primordial-light-from-the-dark-ages-of-the-universe/

Witnessing the onset of #reionization through Lyman-α emission at redshift 13: https://www.nature.com/articles/s41586-025-08779-5 -> NASA's Webb Sees Galaxy Mysteriously Clearing Fog of Early Universe: https://webbtelescope.org/contents/news-releases/2025/news-2025-116

A #blazar in the epoch of #reionization: https://www.nature.com/articles/s41550-024-02431-4 -> Record discovery points to particle jets, support for rapid #BlackHole formation, in the early universe: https://www.mpia.de/news/science/2024-15-z7-blazar

#Cosmology #Reionization #CMB
"Reionization after JWST: a photon budget crisis?"
🔗https://arxiv.org/abs/2404.07250

"Our current galaxy observations, taken at face value, imply an excess of ionizing photons and thus a process of reionization in tension with the cosmic microwave background and Lyman-α forest."

Another component of the evolution after the Big Bang that is at tension with the Big Bang.

#astronomy #quasar #SMBH #reionization #CosmicDawn

An article published in the journal "The Astrophysical Journal Letters" reports the discovery of the most distant pair of merging quasars known. A team of researchers combined observations from the Subaru Telescope with the Gemini North Telescope to find traces of this pair of quasars that we see as they were about 900 million years after the Big Bang.

Read the details at https://english.tachyonbeam.com/2024/06/20/first-pair-of-merging-quasars-observed-at-cosmic-dawn/

in the #arXiv

The First Billion Years, According to JWST

1.5 years into the JWST science mission, a snapshot of the great progress made towards understanding the initial chapters of our cosmic history.
by Angela Adamo and co-authors
https://arxiv.org/abs/2405.21054

#JWST #EarlyUniverse #Cosmology #galaxies #AGN #reionization #Universe #DarkMatter #astronomy #astrophysics #astrodon #science #STEM

#JWST finds ‘smoking gun’ evidence of early galaxies transforming the #universe

https://physicsworld.com/a/jwst-finds-smoking-gun-evidence-of-early-galaxies-transforming-the-universe/

Distant #quasar sheds light on the #reionization of the #cosmos

#astronomy

Deciphering Lyman-α emission deep into the epoch of #reionization: https://www.nature.com/articles/s41550-023-02179-3 -> Webb reveals that galaxy mergers are the solution to early Universe mystery: https://esawebb.org/news/weic2402/ and https://www.ast.cam.ac.uk/content/webb.reveals.galaxy.mergers.are.solution.early.universe.mystery

Strong (Hb + [OIII]) and Ha emitters at redshift z≃7−8 unveiled with JWST/NIRCam and MIRI imaging in the Hubble eXtreme Deep Field (XDF): https://arxiv.org/abs/2301.10717 -> #MIRI instrument on #JWST detects H-alpha emission during the Epoch of #Reionization for the first time: https://www.astronomie.nl/nieuws/en/miri-instrument-on-jwst-detects-h-alpha-emission-during-the-epoch-of-reionization-for-the-first-time-3785

#astronomy #cosmology #stars #galaxies #reionization #JWST
An article published in the journal "Astronomy & Astrophysics" reports the identification of a group of primordial galaxies that could be among the ones that contributed to the reionization of the universe, making it go from dark to bright. A team of researchers used observations conducted with the James Webb space telescope within the GLASS-JWST program to study 29 very distant and therefore ancient galaxies.

https://english.tachyonbeam.com/2023/03/14/some-of-the-galaxies-that-might-have-turned-the-universe-from-a-dark-place-to-a-bright-one-have-been-identified/

A new supercomputer simulation animates the evolution of the universe

The detailed simulation shows the cosmos changing from a dark, featureless gas to a web of stars and galaxies radiating light.

#cosmology #CreationMyths #UniverseWasAColdDarkPlace #ThenThereWasLight #reionization #spinoza

https://www.sciencenews.org/article/universe-evolution-supercomputer-animation-stars-galaxies