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1. www.nature.com › articles › s42005/021/00628-xWhy reducing the cosmic sound horizon alone can not fully ...

   www.nature.com › articles › s42005/021/00628-x

   Jun 8, 2021 · with an accuracy of 0.03% 1. The sound horizon r⋆ is the comoving distance a sound wave could travel from the beginning of the universe to recombination, a standard ruler in any given...

   • Author: Karsten Jedamzik, Levon Pogosian, Gong-Bo Zhao

   • Publish Year: 2021

2. www.nature.com › articles › s42005/021/00628-xWhy reducing the cosmic sound horizon alone can not fully ...

   www.nature.com › articles › s42005/021/00628-x

   with an accuracy of 0.03%1. The sound horizon is the r⋆ comoving distance a sound wave could travel from the beginning of the universe to recombination, a standard ruler in any given model,...

   • Author: Karsten Jedamzik, Levon Pogosian, Gong-Bo Zhao

   • Publish Year: 2021

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4. www.aanda.org › articles › aaLow-redshift measurement of the sound horizon through ...

   www.aanda.org › articles › aa

   May 28, 2019 · Currently, the sound horizon is most precisely constrained by a combination of BAO measurements from the Baryon Oscillations Spectroscopic Survey (BOSS; Alam et al. 2017 ), with a calibration from the Supernovae and H0 for the Equation of State of dark energy project (SH0ES; Riess et al. 2019 ).

   • Author: Nikki Arendse, Adriano Agnello, Radosław J. Wojtak

   • Publish Year: 2019

5. london.physics.ucdavis.edu › ~reu › REU18DISCREPANCY IN THE VALUE OF THE COSMOLOGICAL SOUND HORIZON

   london.physics.ucdavis.edu › ~reu › REU18

   DISCREPANCY IN THE VALUE OF THE COSMOLOGICAL SOUND HORIZON. Mackenzie Joy. University of Georgia. Lloyd Knox. UC Davis The comoving size of the sound horizon can be determined in two ways. It can be found empirically with Cepheid-calibrated Type 1a Supernovae or calculated within the standard model of cosmology.

6. arxiv.org › abs › 2405[2405.12498] Model independent calibration for sound horizon ...

   arxiv.org › abs › 2405

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   May 22, 2024 · We propose a new model-independent method to calibrate sound horizon rhs (relative standard ruler) by using the latest observations of SNe Ia and transversal BAO measurements. The final result reports rhs = 107.10+1.36−1.32 Mpc/h in the framework of the Pantheon dataset.

7. ned.ipac.caltech.edu › level5 › Sept02The picture of our universe: A view from modern cosmology - D ...

   ned.ipac.caltech.edu › level5 › Sept02

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   There is now strong evidence that both the 2 nd and 3 rd modes have also been observed. [ 20] - [ 22 ] The distance sound waves could have traveled in the time before recombination is called the sound horizon , rs. The sound horizon is a fixed physical scale at the surface of last scattering.

8. People also ask

   How accurate is a sound horizon?

   • with an accuracy of 0.03% 1. The sound horizon r⋆ is the comoving distance a sound wave could travel from the beginning of the universe to recombination, a standard ruler in any given model, and D ( z⋆) is the comoving distance from a present-day observer to the last scattering surface, i.e., to the epoch of recombination.

   Why reducing the cosmic sound horizon alone can not fully resolve the …

   www.nature.com/articles/s42005-021-00628-x

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   How do cosmological parameters affect the angular size of a sound horizon?

   • The distance to the surface of last scattering, dsls, also depends on cosmological parameters. Together, they determine the angular size of the sound horizon (see Fig. 3) in the same way that the angle subtended by the planet Jupiter depends on both its size and distance from us.

   The picture of our universe: A view from modern cosmology - D. Reid e…

   ned.ipac.caltech.edu/level5/Sept02/Reid/Reid5_2.html

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   How accurate are acoustic peaks in cosmology?

   • Among the most precisely measured quantities in cosmology are the locations of the acoustic peaks in the CMB temperature and polarization anisotropy spectra. They determine the angular size of the sound horizon at recombination, r? with an accuracy of 0.03%1.

   Why reducing the cosmic sound horizon alone can not fully resolve the …

   www.nature.com/articles/s42005-021-00628-x.pdf

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   Which acoustic peak is most sensitive to the curvature of the universe?

   • The location of the first acoustic peak is given by dsls / rs and is most sensitive to the curvature of the universe k . To get a feeling for this result, we can consider a very simplified, heuristic calculation. We will consider a prediction for the first acoustic peak for the case of a flat universe.

   The picture of our universe: A view from modern cosmology - D. Reid e…

   ned.ipac.caltech.edu/level5/Sept02/Reid/Reid5_2.html

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9. www.researchgate.net › publication › 352221470_Why(PDF) Why reducing the cosmic sound horizon alone can not ...

   www.researchgate.net › publication › 352221470_Why

   Jun 8, 2021 · Dark Energy. Article PDF Available. Why reducing the cosmic sound horizon alone can not fully resolve the Hubble tension. June 2021. Communications Physics 4 (1) DOI:...