Results 21 to 30 of about 120,003 (344)
Dark Energy Survey Year 3 results: redshift calibration of the weak lensing source galaxies [PDF]
Monthly notices of the Royal Astronomical Society, 2020 Determining the distribution of redshifts of galaxies observed by wide-field photometric experiments like the Dark Energy Survey (DES) is an essential component to mapping the matter density field with gravitational lensing.
J. Myles +107 more
semanticscholar +1 more source
Hubble sinks in the low-redshift swampland [PDF]
, 2020 Local determinations of the Hubble constant $H_0$ favour a higher value than Planck based on CMB and $\Lambda$CDM. Through a model-independent expansion, we show that low redshift ($z \lesssim 0.7$) data comprising baryon acoustic oscillations (BAO ...
A. Banerjee +5 more
semanticscholar +1 more source
High-redshift cosmography [PDF]
Journal of Cosmology and Astroparticle Physics, 2010 We constrain the parameters describing the kinematical state of the universe using a cosmographic approach, which is fundamental in that it requires a very minimal set of assumptions (namely to specify a metric) and does not rely on the dynamical equations for gravity.
Vitagliano, V. +3 more
openaire +4 more sources
Applied Sciences, 2020 The one-dimensional Schrödinger equation, applied to the H2 intramolecular stretch coordinate in singly to quadruply occupied large cages in extended Type II (sII) hydrogen clathrate hydrate, was solved numerically herein via potential-energy scans from ...
Christian J. Burnham +3 more
doaj +1 more source
Noncosmological redshifts [PDF]
Space Science Reviews, 1977 L’introduction de lignes d’univers brisées dans la théorie de la gravitation de Hoyle et Narlikar permet de rendre compte de la création de matière. Cette matière qui se compose de masses inertielles plus petites se manifeste par des décalages spectraux vers le rouge anormaux.
openaire +2 more sources
A luminous quasar at a redshift of z = 7.085 [PDF]
Nature, 2011 The intergalactic medium was not completely reionized until approximately a billion years after the Big Bang, as revealed by observations of quasars with redshifts of less than 6.5.
D. Mortlock +16 more
semanticscholar +1 more source
Accurate precision cosmology with redshift unknown gravitational wave sources [PDF]
, 2020 Gravitational waves can provide an accurate measurement of the luminosity distance to the source but cannot provide the source redshift unless the degeneracy between mass and redshift can be broken.
S. Mukherjee +3 more
semanticscholar +1 more source
The Host Galaxy and Redshift of the Repeating Fast Radio Burst FRB 121102 [PDF]
, 2017 The precise localization of the repeating fast radio burst (FRB 121102) has provided the first unambiguous association (chance coincidence probability p ≲ 3 × 10−4) of an FRB with an optical and persistent radio counterpart.
S. Tendulkar +23 more
semanticscholar +1 more source
Clustering-based redshift estimation: comparison to spectroscopic redshifts [PDF]
Monthly Notices of the Royal Astronomical Society, 2015 13 pages. Submitted to MNRAS.
Rahman, Mubdi +4 more
openaire +2 more sources
[O III] / [N II] as an abundance indicator at high redshift [PDF]
, 2004 Among 'empirical' methods of estimating oxygen abundances in extragalactic H II regions, the use of the ratio of nebular lines of [O III] and [N II], first introduced by Alloin et al., is reappraised with modern calibration data and shown to have certain
M. Pettini, B. Pagel
semanticscholar +1 more source