Low redshift constraints on scale-covariant models
Sign Up to like & getrecommendations! Published in 2022 at "Physics of the Dark Universe"
DOI: 10.1016/j.dark.2022.100964
Abstract: The search for a physical model which explains the observed recent acceleration of the universe is a compelling task of modern fundamental cosmology. Recently Fernandes et al. presented low redshift observational constraints on a scale… read more here.
Keywords: constraints scale; redshift constraints; cosmological constant; low redshift ... See more keywords
An optical perspective on the theory of relativity -Ⅲ: Gravitational redshift
Sign Up to like & getrecommendations! Published in 2020 at "Optik"
DOI: 10.1016/j.ijleo.2020.165684
Abstract: Abstract By using the concept of a space-time ruler, the clock difference between the clocks on two aircraft flying around the world, one east and one west, along the equator and a clock fixed on… read more here.
Keywords: optical perspective; generalized hamiltonian; theory relativity; gravitational redshift ... See more keywords
A novel redshift mechanism of Ce3+ emission in ZrO2-Ce: YAG composite phosphor ceramics
Sign Up to like & getrecommendations! Published in 2020 at "Journal of The European Ceramic Society"
DOI: 10.1016/j.jeurceramsoc.2020.06.026
Abstract: Abstract In this work, ZrO2-Ce: YAG composite phosphor ceramic for the application of high brightness w-LEDs was fabricated for the first time. A novel redshift mechanism of Ce3+ emission is discovered in the composite ceramics… read more here.
Keywords: zro2 yag; yag composite; composite phosphor; ce3 emission ... See more keywords
Cosmological Inference from Host-Selected Type Ia Supernova Samples
Sign Up to like & getrecommendations! Published in 2017 at "Publications of the Astronomical Society of Australia"
DOI: 10.1017/pasa.2017.2
Abstract: Abstract We compare two Type Ia supernova samples that are drawn from a spectroscopically confirmed Type Ia supernova sample: a host-selected sample in which SNe Ia are restricted to those that have a spectroscopic redshift… read more here.
Keywords: supernova samples; type supernova; host selected; host ... See more keywords
Extreme quasars at high redshift
Sign Up to like & getrecommendations! Published in 2018 at "Astronomy and Astrophysics"
DOI: 10.1051/0004-6361/201833541
Abstract: Context:Quasars radiating at extreme Eddington ratios (xA) are likely a prime mover of galactic evolution and have been hailed as potential distance indicators. Their properties are still scarcely known. Aims:We test the effectiveness of the… read more here.
Keywords: siiii 1892; high redshift; quasars high; extreme quasars ... See more keywords
Photoexcited Blueshift and Redshift Switchable Metamaterial Absorber at Terahertz Frequencies
Sign Up to like & getrecommendations! Published in 2019 at "Chinese Physics Letters"
DOI: 10.1088/0256-307x/36/12/124202
Abstract: We propose a design and numerical study of an optically blueshift and redshift switchable metamaterial (MM) absorber in the terahertz regime. The MM absorber comprises a periodic array of metallic split-ring resonators (SRRs) with semiconductor… read more here.
Keywords: switchable metamaterial; redshift switchable; absorber; metamaterial absorber ... See more keywords
Recent Developments on the HI Gas of Low-Redshift Galaxies Seen by the 21 cm Emission Lines
Sign Up to like & getrecommendations! Published in 2024 at "Chinese Physics Letters"
DOI: 10.1088/0256-307x/41/10/109801
Abstract: As a major interstellar medium, the atomic neutral hydrogen (H i) plays an important role in the galaxy evolution. It provides the ingredient for star formation, and sensitively traces the internal processes and external perturbations… read more here.
Keywords: evolution; recent developments; developments gas; redshift ... See more keywords
Preliminary sensitivity study for a gravitational redshift measurement with China’s Lunar exploration project
Sign Up to like & getrecommendations! Published in 2024 at "Classical and Quantum Gravity"
DOI: 10.1088/1361-6382/ad4ae2
Abstract: General relativity (GR) is a highly successful theory that describes gravity as a geometric phenomenon. The gravitational redshift, a classic test of GR, can potentially be violated in alternative gravity theories, and experimental tests on… read more here.
Keywords: china lunar; lunar exploration; redshift; gravitational redshift ... See more keywords
High-redshift post-reionization cosmology with 21cm intensity mapping
Sign Up to like & getrecommendations! Published in 2018 at "Journal of Cosmology and Astroparticle Physics"
DOI: 10.1088/1475-7516/2018/05/004
Abstract: We investigate the possibility of performing cosmological studies in the redshift range $2.5 read more here.
Keywords: cosmology; sigma; 21cm intensity; intensity mapping ... See more keywords
Quantifying the evidence for the current speed-up of the Universe with low and intermediate-redshift data. A more model-independent approach
Sign Up to like & getrecommendations! Published in 2019 at "Journal of Cosmology and Astroparticle Physics"
DOI: 10.1088/1475-7516/2019/05/026
Abstract: We reconstruct in this paper the deceleration and jerk parameters as functions of the cosmological redshift from data on cosmic chronometers (CCH), baryon acoustic oscillations (BAOs), and the Pantheon+MCT compilation of supernovae of Type Ia… read more here.
Keywords: universe; evidence; model; redshift data ... See more keywords
Constraining neutrino mass with weak lensing Minkowski Functionals
Sign Up to like & getrecommendations! Published in 2019 at "Journal of Cosmology and Astroparticle Physics"
DOI: 10.1088/1475-7516/2019/06/019
Abstract: The presence of massive neutrinos affects structure formation, leaving imprints on large-scale structure observables such as the weak lensing field. The common lensing analyses with two-point statistics are insensitive to the large amount of non-Gaussian… read more here.
Keywords: neutrino mass; minkowski functionals; mass; weak lensing ... See more keywords