Milliarcsecond compact structure of radio quasars and the geometry of the Universe
Sign Up to like & getrecommendations! Published in 2019 at "Physics of the Dark Universe"
DOI: 10.1016/j.dark.2019.100274
Abstract: In this paper, by using the recently compiled set of 120 intermediate-luminosity quasars (ILQSO) observed in a single-frequency VLBI survey, we propose an improved model-independent method to probe cosmic curvature parameter $\Omega_k$ and make the… read more here.
Keywords: cosmic curvature; radio quasars; geometry; universe milliarcsecond ... See more keywords
Testing the cosmic curvature at high redshifts: the combination of LSST strong lensing systems and quasars as new standard candles
Sign Up to like & getrecommendations! Published in 2020 at "Monthly Notices of the Royal Astronomical Society"
DOI: 10.1093/mnras/staa1539
Abstract: The cosmic curvature, a fundamental parameter for cosmology could hold deep clues to inflation and cosmic origins. We propose an improved model-independent method to constrain the cosmic curvature by combining the constructed Hubble diagram of… read more here.
Keywords: strong lensing; standard candles; model; lensing systems ... See more keywords
The distance sum rule from strong lensing systems and quasars – test of cosmic curvature and beyond
Sign Up to like & getrecommendations! Published in 2018 at "Monthly Notices of the Royal Astronomical Society"
DOI: 10.1093/mnras/sty3175
Abstract: Testing the distance-sum-rule in strong lensing systems provides an interesting method to determine the curvature parameter $\Omega_k$ using more local objects. In this paper, we apply this method to a quite recent data set of… read more here.
Keywords: strong lensing; distance; model; lensing systems ... See more keywords