Traces of Anisotropic Quasi-Regular Structure in the SDSS Data
The aim of this study is to search for quasi-periodical structures at moderate cosmological redshifts z ≲ 0.5. We mainly use the SDSS DR7 data on the luminous red galaxies (LRGs) with redshifts 0.16 ≤ z ≤ 0.47.
Andrei I. Ryabinkov +1 more
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Spatial homogeneity and redshift-distance laws [PDF]
Spatial homogeneity in the radial direction of low-redshift galaxies is subjected to Kafka-Schmidt V/V m tests using well-documented samples. Homogeneity is consistent with the assumption of the Lundmark (quadratic redshift-distance) law, but large deviations from homogeneity are implied ...
J F, Nicoll, I E, Segal
openaire +2 more sources
The Planetary Nebula Luminosity Function in the Era of Precision Cosmology
One of the great surprises of the late 1980s was the discovery that the [O III] λ5007 planetary nebula luminosity function (PNLF) could be used as a precision extragalactic standard candle.
Robin Ciardullo, Robin Ciardullo
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Large-Scale Structure and the Redshift-Distance Relation [PDF]
In efforts to demonstrate the linear Hubble law v = Hr from galaxy observations, the underlying simplicity is often obscured by complexities arising from magnitude-limited data. In this paper we point out a simple but previously unremarked fact: that the shapes and orientations of structures in redshift space contain in themselves independent ...
Jones, M. A., Fry, J. N.
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SUPERLUMINOUS SUPERNOVAE AS STANDARDIZABLE CANDLES AND HIGH-REDSHIFT DISTANCE PROBES [PDF]
We investigate the use of type Ic Super Luminous Supernovae as standardizable candles and distance indicators. Their appeal as cosmological probes stems from their remarkable peak luminosities, hot blackbody temperatures and bright restframe ultraviolet emission.
Inserra, C., Smartt, S. J.
openaire +5 more sources
The Truncated Lognormal Distribution as a Luminosity Function for SWIFT-BAT Gamma-Ray Bursts
The determination of the luminosity function (LF) in Gamma ray bursts (GRBs) depends on the adopted cosmology, each one characterized by its corresponding luminosity distance.
Lorenzo Zaninetti
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Can Cosmological Simulations Reproduce the Spectroscopically Confirmed Galaxies Seen at z ≥ 10?
Recent photometric detections of extreme ( z > 10) redshift galaxies from the JWST have been shown to be in strong tension with existing simulation models for galaxy formation and in the most acute case, in tension with ΛCDM itself.
B. W. Keller +3 more
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PHOTOMETRIC ESTIMATES OF REDSHIFTS AND DISTANCE MODULI FOR TYPE Ia SUPERNOVAE [PDF]
Large planned photometric surveys will discover hundreds of thousands of supernovae (SNe), outstripping the resources available for spectroscopic follow-up and necessitating the development of purely photometric methods to exploit these events for cosmological study.
Kessler, Richard +16 more
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Luminosity distance and anisotropic sky-sampling at low redshifts: A numerical relativity study [PDF]
20 pages, 12 figures, v2: matches published version in Phys. Rev.
Macpherson, Hayley J., Heinesen, Asta
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Testing the local spacetime dynamics by heliospheric radiocommunication methods [PDF]
According to general relativistic theories, cosmological spacetime is dynamic. This prediction is in excellent agreement with the huge majority of astronomical observations on large cosmic scales, especially the observations of cosmological redshifts ...
H.-J. Fahr, M. Siewert
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