Hubble tension: The evidence of new physics
The Λ CDM model provides a good fit to most astronomical observations but harbors large
areas of phenomenology and ignorance. With the improvements in the precision and …
areas of phenomenology and ignorance. With the improvements in the precision and …
Challenges for ΛCDM: An update
A number of challenges to the standard Λ CDM model have been emerging during the past
few years as the accuracy of cosmological observations improves. In this review we discuss …
few years as the accuracy of cosmological observations improves. In this review we discuss …
, , and other constraints from lower-redshift, non-CMB, expansion-rate data
We use updated type Ia Pantheon+ supernova, baryon acoustic oscillation, and Hubble
parameter (now also accounting for correlations) data, as well as new reverberation …
parameter (now also accounting for correlations) data, as well as new reverberation …
Optical and X-ray GRB Fundamental Planes as cosmological distance indicators
ABSTRACT Gamma-ray bursts (GRBs), can be employed as standardized candles,
extending the distance ladder beyond Type Ia supernovae (SNe Ia, z= 2.26). We …
extending the distance ladder beyond Type Ia supernovae (SNe Ia, z= 2.26). We …
Using lower redshift, non-CMB, data to constrain the Hubble constant and other cosmological parameters
We use updated Hubble parameter and baryon acoustic oscillation data, as well as other
lower redshift Type Ia supernova, Mg ii reverberation-measured quasar, quasar angular …
lower redshift Type Ia supernova, Mg ii reverberation-measured quasar, quasar angular …
Standardizing Platinum Dainotti-correlated gamma-ray bursts, and using them with standardized Amati-correlated gamma-ray bursts to constrain cosmological model …
We show that the Platinum gamma-ray burst (GRB) data compilation, probing the redshift
range 0.553≤ z≤ 5.0, obeys a cosmological-model-independent three-parameter …
range 0.553≤ z≤ 5.0, obeys a cosmological-model-independent three-parameter …
Testing the cosmological principle with the Pantheon+ sample and the region-fitting method
The cosmological principle is fundamental to the standard cosmological model. It assumes
that the Universe is homogeneous and isotropic on very large scales. As the basic …
that the Universe is homogeneous and isotropic on very large scales. As the basic …
Standardizing Dainotti-correlated gamma-ray bursts, and using them with standardized Amati-correlated gamma-ray bursts to constrain cosmological model …
We show that each of the three Dainotti-correlated gamma-ray burst (GRB) data sets
recently compiled by Wang et al. and Hu et al., that together probe the redshift range 0.35≤ …
recently compiled by Wang et al. and Hu et al., that together probe the redshift range 0.35≤ …
Unveiling the Universe with emerging cosmological probes
The detection of the accelerated expansion of the Universe has been one of the major
breakthroughs in modern cosmology. Several cosmological probes (Cosmic Microwave …
breakthroughs in modern cosmology. Several cosmological probes (Cosmic Microwave …
Quasar UV/X-ray relation luminosity distances are shorter than reverberation-measured radius–luminosity relation luminosity distances
We use measurements of 59/58 quasars (QSOs), over a redshift range 0.0041≤ z≤ 1.686,
to do a comparative study of the radius–luminosity (R− L) and X-ray− UV luminosity (LX …
to do a comparative study of the radius–luminosity (R− L) and X-ray− UV luminosity (LX …