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The most stringent local measurement of the Hubble-Lema\^itre constant from Cepheid-calibrated Type Ia supernovae (SNe~Ia) differs from the value inferred via the cosmic microwave background radiation ({\it Planck}$+\Lambda$CDM) by $\sim…

Cosmology and Nongalactic Astrophysics · Physics 2022-06-29 T. de Jaeger , L. Galbany , A. G. Riess , B. E. Stahl , B. J. Shappee , A. V. Filippenko , W. Zheng

The Hubble constant ($H_0$) tension is one of the biggest challenges in modern cosmology. This consists of the discrepancy, at around $5\sigma$, between the local value of $H_0$ measured through Supernovae Ia (SNe Ia) constrained with the…

Cosmology and Nongalactic Astrophysics · Physics 2025-01-28 Maria Giovanna Dainotti , Biagio De Simone

Context. The precise determination of the present-day expansion rate of the Universe, expressed through the Hubble constant $H_0$, is one of the most pressing challenges in modern cosmology. Assuming flat $\Lambda$CDM, $H_0$ inference at…

Cosmology and Nongalactic Astrophysics · Physics 2019-08-21 S. Taubenberger , S. H. Suyu , E. Komatsu , I. Jee , S. Birrer , V. Bonvin , F. Courbin , C. E. Rusu , A. J. Shajib , K. C. Wong

Progressive increases in the precision of the Hubble-constant measurement via Cepheid-calibrated Type Ia supernovae (SNe Ia) have shown a discrepancy of $\sim 4.4\sigma$ with the current value inferred from Planck satellite measurements of…

Cosmology and Nongalactic Astrophysics · Physics 2020-07-01 T. de Jaeger , B. E. Stahl , W. Zheng , A. V. Filippenko , A. G. Riess , L. Galbany

We have carefully studied how local measurements of the Hubble constant, $H_0$, can be influenced by a variety of different parameters related to survey geometry, depth, and size, as well as observer position in space. Our study is based on…

Cosmology and Nongalactic Astrophysics · Physics 2015-02-13 Io Odderskov , Steen Hannestad , Troels Haugbølle

The Hubble constant ($H_0$) is one of the fundamental parameters in cosmology, but there is a heated debate around the $>$4$\sigma$ tension between the local Cepheid distance ladder and the early Universe measurements. Strongly lensed Type…

Cosmology and Nongalactic Astrophysics · Physics 2022-03-14 S. Huber , S. H. Suyu , D. Ghoshdastidar , S. Taubenberger , V. Bonvin , J. H. H. Chan , M. Kromer , U. M. Noebauer , S. A. Sim , L. Leal-Taixé

The Hubble constant ($H_0$), which represents the expansion rate of the Universe, is one of the most important cosmological parameters. The recent measurements of $H_0$ using the distance ladder methods such as Type Ia Supernovae (SNe Ia)…

Cosmology and Nongalactic Astrophysics · Physics 2023-06-14 Rahul Kumar Thakur , Shashikant Gupta , Rahul Nigam , PK Thiruvikraman

We use supernovae measurements, calibrated by the local determination of the Hubble constant $H_0$ by SH0ES, to interpolate the distance-redshift relation using Gaussian process regression. We then predict, independent of the cosmological…

Cosmology and Nongalactic Astrophysics · Physics 2020-07-08 Shivam Pandey , Marco Raveri , Bhuvnesh Jain

We review the local determination of the Hubble constant, H$_0$, focusing on recent measurements of a distance ladder constructed from geometry, Cepheid variables and Type Ia supernovae (SNe Ia). We explain in some detail the components of…

Cosmology and Nongalactic Astrophysics · Physics 2024-04-19 Adam G. Riess , Louise Breuval

This study aims to elucidate the tension in the Hubble constant ($H_0$), a key metric in cosmology representing the universe's expansion rate. Conflicting results from independent measurements such as the Planck satellite mission and the…

Cosmology and Nongalactic Astrophysics · Physics 2024-10-01 David Camarena , Valerio Marra

The simplest cosmological model ($\Lambda$CDM) is well-known to suffer from the Hubble tension, namely an almost $5 \sigma$ discrepancy between the (model-based) early-time determination of the Hubble constant $H_0$ and its late-time (and…

Cosmology and Nongalactic Astrophysics · Physics 2023-10-06 Darshan Kumar , Debajyoti Choudhury , Debottam Nandi

The ongoing discrepancy in the Hubble constant ($H_0$) estimates obtained through local distance ladder methods and early universe observations poses a significant challenge to the $\Lambda$CDM model, suggesting potential new physics. Type…

The three rung distance ladder, which calibrates Type Ia supernovae through stellar distances linked to geometric measurements, provides the highest precision direct measurement of the Hubble constant. In light of the Hubble tension, it is…

We present an improved measurement of the Hubble constant (H_0) using the 'inverse distance ladder' method, which adds the information from 207 Type Ia supernovae (SNe Ia) from the Dark Energy Survey (DES) at redshift 0.018 < z < 0.85 to…

Cosmology and Nongalactic Astrophysics · Physics 2019-05-29 E. Macaulay , R. C. Nichol , D. Bacon , D. Brout , T. M. Davis , B. Zhang , B. A. Bassett , D. Scolnic , A. Möller , C. B. D'Andrea , S. R. Hinton , R. Kessler , A. G. Kim , J. Lasker , C. Lidman , M. Sako , M. Smith , M. Sullivan , T. M. C. Abbott , S. Allam , J. Annis , J. Asorey , S. Avila , K. Bechtol , D. Brooks , P. Brown , D. L. Burke , J. Calcino , A. Carnero Rosell , D. Carollo , M. Carrasco Kind , J. Carretero , F. J. Castander , T. Collett , M. Crocce , C. E. Cunha , L. N. da Costa , C. Davis , J. De Vicente , H. T. Diehl , P. Doel , A. Drlica-Wagner , T. F. Eifler , J. Estrada , A. E. Evrard , A. V. Filippenko , D. A. Finley , B. Flaugher , R. J. Foley , P. Fosalba , J. Frieman , L. Galbany , J. García-Bellido , E. Gaztanaga , K. Glazebrook , S. González-Gaitán , D. Gruen , R. A. Gruendl , J. Gschwend , G. Gutierrez , W. G. Hartley , D. L. Hollowood , K. Honscheid , J. K. Hoormann , B. Hoyle , D. Huterer , B. Jain , D. J. James , T. Jeltema , E. Kasai , E. Krause , K. Kuehn , N. Kuropatkin , O. Lahav , G. F. Lewis , T. S. Li , M. Lima , H. Lin , M. A. G. Maia , J. L. Marshall , P. Martini , R. Miquel , P. Nugent , A. Palmese , Y. -C. Pan , A. A. Plazas , A. K. Romer , A. Roodman , E. Sanchez , V. Scarpine , R. Schindler , M. Schubnell , S. Serrano , I. Sevilla-Noarbe , R. Sharp , M. Soares-Santos , F. Sobreira , N. E. Sommer , E. Suchyta , E. Swann , M. E. C. Swanson , G. Tarle , D. Thomas , R. C. Thomas , B. E. Tucker , S. A. Uddin , V. Vikram , A. R. Walker , P. Wiseman

The standard cosmological model, the $\Lambda$CDM model, is the most suitable description for our universe. This framework can explain the accelerated expansion phase of the universe but still is not immune to open problems when it comes to…

Cosmology and Nongalactic Astrophysics · Physics 2024-01-01 Maria Giovanna Dainotti , Biagio De Simone , Giovanni Montani , Malgorzata Bogdan

Different measurements of the Hubble constant ($H_{0}$) are not consistent and a tension between the CMB based methods and cosmic distance ladder based methods has been observed. Measurements from various distance based methods are also…

Cosmology and Nongalactic Astrophysics · Physics 2020-06-23 Rahul Kumar Thakur , Shashikant Gupta , Rahul Nigam , PK Thiruvikraman

In this work, we propose a cosmological model-independent and non-local method to constrain the Hubble Constant $H_0$. Inspired by the quasi cosmological model-independent and $H_0$-free properties of the `shifted' Hubble diagram of HII…

Cosmology and Nongalactic Astrophysics · Physics 2025-06-18 Jian-Chen Zhang , Kang Jiao , Tong-Jie Zhang

The LambdaCDM model is the most commonly accepted framework in modern cosmology. However, the local measurements of the Hubble constant, H0, via the Supernovae Type Ia (SNe Ia) calibrated on Cepheids provide a value which is in significant…

Cosmology and Nongalactic Astrophysics · Physics 2023-11-28 M. G. Dainotti , B. De Simone , G. Montani , E. Rinaldi , M. Bogdan , K. M. Islam , A. Gangopadhyay

The local expansion rate of the Universe is parametrized by the Hubble constant, $H_0$, the ratio between recession velocity and distance. Different techniques lead to inconsistent estimates of $H_0$. Observations of Type Ia supernovae…

Cosmology and Nongalactic Astrophysics · Physics 2019-09-17 Inh Jee , Sherry Suyu , Eiichiro Komatsu , Christopher D. Fassnacht , Stefan Hilbert , Léon V. E. Koopmans

We present a determination of the Hubble constant from the joint, free-form analysis of 8 strongly, quadruply lensing systems. In the concordance cosmology, we find $H_0 = 71.8^{+3.9}_{-3.3}\,\mathrm{km}\,\mathrm{s}^{-1}\,\mathrm{Mpc}^{-1}$…

Cosmology and Nongalactic Astrophysics · Physics 2021-02-22 Philipp Denzel , Jonathan P. Coles , Prasenjit Saha , Liliya L. R. Williams
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