Results 21 to 30 of about 295,900 (371)
Does Lorentz Relativistic Mass Make Dark Energy Superfluous?
Universe, 2022 This paper shows that a simple and relativistic extension of Newtonian gravity that takes into account Lorentz relativistic mass leads to predictions that fit supernova observations of magnitude versus redshift without the need to introduce dark energy ...
Espen Gaarder Haug
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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
On the gravitational redshift [PDF]
New Astronomy, 2014 The study of the gravitational redshift\,---\,a relative wavelength increase of $\approx 2 \times 10^{-6}$ was predicted for solar radiation by Einstein in 1908\,---\,is still an important subject in modern physics. In a dispute whether or not atom interferometry experiments can be employed for gravitational redshift measurements, two research teams ...
Klaus Wilhelm, Bhola N. Dwivedi
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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
BLAST: THE REDSHIFT SURVEY [PDF]
The Astrophysical Journal, 2009 Accepted for publication in the Astrophysical Journal. Maps and associated results are available at http://blastexperiment.info/
Eales, Stephen +18 more
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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
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
Hemijska Industrija, 2008 If we assume that the observed Redshift of starlight is due to the Doppler effect we end up with models of the universe which contradict the basic laws of science. If we assume that the red shift may be due to a tiring of light, an assumption still to be
Levenspiel Octave
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Metals at High Redshifts [PDF]
Proceedings of the International Astronomical Union, 2001 The amount of metals present in the Universe and its cosmological evolution is a key issue for our understanding of how star formation proceeds from the collapse of the first objects to the formation of present day galaxies. We discuss here recent results at the two extremes of the density scale.1.
Patrick Petitjean, Patrick Petitjean
openaire +4 more sources
An Optical View of Extragalactic γ-Ray Emitters
Frontiers in Astronomy and Space Sciences, 2017 The Fermi Gamma-ray Observatory discovered about a thousand extragalactic sources emitting energy from 100 MeV to 100 GeV. The majority of these sources belong to the class of blazars characterized by a quasi-featureless optical spectrum (BL Lac Objects).
Simona Paiano +6 more
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