Spectroscopy from the JWST Advanced Deep Extragalactic Survey of a galaxy at redshift 13 shows a singular, bright emission line identified as Lyman-α, suggesting the onset of reionization only 330 Myr after the Big Bang. Joris Witstok Peter Jakobsen Yongda Zhu ResearchOpen Access26 Mar 2025...
Cosmic Redshift and Cosmologically Strengthening Hydrogen Atom in Black Hole CosmologyU. V. S. SeshavatharamS. Lakshminarayana
3C. To improve on this situation we have been undertaking redshift surveys of complete samples drawn from the fainter 6C and 7C radio catalogues. We describe these surveys, and illustrate the new studies they are allowing. We also discuss our `filtered' 6C redshift surveys: these have led ...
We also discuss our 'filtered' 6C redshift surveys: these have led to the discovery of a radio galaxy at z = 4.4, and are sensitive to similar objects at higher redshift provided the space density of these objects, p, is not declining too rapidly with z. There is currently no direct ...
When we record light from this galaxy, we see the spectrum and find out its redshift i.e., the galaxy is moving away. When the photon was emitted, it had relative velocity.What if the space was expanding? It is an instantaneous redshift of photon. Cumulative redshifts along the space...
I show that the large number of objects observed with a surveying 4-m zenith telescope allows one to carry out cosmological projects at low redshifts. Examining two case studies, I show first that a variability survey would obtain light curves for several thousands of type Ia supernovae per...
In the News ... New Study of Supernovae Data Suggests That Dark Energy is an IllusionUniverse Today - January 2, 2025 Dark energy is central to our modern understanding of cosmology. In the standard model, dark energy is what drives the expansion of the Universe. In general relativity, it...
Discover the latest articles and news from researchers in related subjects, suggested using machine learning. Cosmology Special Relativity Physics and Astronomy Physical Sciences Foundations of Physics and Cosmology General Relativity 1Introduction Astronomy is almost entirely built up from information coming ...
red shift/ radio source countsredshiftssteady state cosmologyidentificationsradio galaxiesquasi stellar sources/ A9870D Cosmic radio sources A9880 CosmologyTHERE appears to be continuing confusion as to whether or not counts of extragalactic radio sources are compatible with the steady state theory. Ryle...
E. Romano, Mapping Luminosity-Redshift Relationship to LTB Cosmology, Phys. Rev. D74 (2006) 103507, [astro-ph/0608403].D. J. H. Chung and A. E. Romano, Mapping Luminosity-Redshift Relationship to LTB Cosmology, Phys. Rev. D74 (2006), 103507, available at astro-ph/0608403. ↑120...