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相关论文: A Model-independent Method to Determine $H_0$ Usin…

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With the distance sum rule in the Friedmann-Lema\^{\i}tre-Robertson-Walker metric, model-independent constraints on both the Hubble constant $H_0$ and spatial curvature $\Omega_{K}$ can be obtained using strong lensing time-delay data and…

宇宙学与河外天体物理 · 物理学 2020-07-22 Jun-Jie Wei , Fulvio Melia

Strongly lensed type Ia supernovae (SNe Ia) are expected to have some advantages in measuring time delays of multiple images, and so they have a great potential to be developed into a powerful late-universe cosmological probe. In this…

宇宙学与河外天体物理 · 物理学 2022-07-26 Jing-Zhao Qi , Yu Cui , Wei-Hong Hu , Jing-Fei Zhang , Jing-Lei Cui , Xin Zhang

This paper presents a new model-independent constraint on the Hubble constant ($H_0$) by anchoring relative distances from Type Ia supernovae (SNe Ia) observations to absolute distance measurements from time-delay strong Gravitational…

宇宙学与河外天体物理 · 物理学 2025-03-13 L. R. Colaço

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…

宇宙学与河外天体物理 · 物理学 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

We present a cosmological model-independent determination of the Hubble constant, $H_0$, by combining time-delay measurements from seven TDCOSMO systems, Einstein radius measurements, and Type Ia Supernovae data sourced from the Pantheon+…

宇宙学与河外天体物理 · 物理学 2025-05-28 L. R. Colaço , R. F. L. Holanda , Z. C. Santana , R. Silva

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…

宇宙学与河外天体物理 · 物理学 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

Supernova H0pe is a multiply-imaged Type Ia supernova (SN~Ia) and the second lensed SN to yield a measurement of the Hubble constant by the time-delay cosmography method, finding $H_0 = 75.4^{+8.1}_{-5.5} \text{km s}^{-1} \text{Mpc}^{-1}$…

Strongly lensed quasar systems with time delay measurements provide "time delay distances", which are a combination of three angular diameter distances and serve as powerful tools to determine the Hubble constant $H_0$. However, current…

宇宙学与河外天体物理 · 物理学 2019-12-18 Kai Liao , Arman Shafieloo , Ryan E. Keeley , Eric V. Linder

We describe a procedure for accurately determining luminosity distances to Type Ia supernovae (SNe Ia) without knowledge of redshift. This procedure, which may be used as an extension of any of the various distance determination methods…

天体物理学 · 物理学 2009-11-10 Brian J. Barris , John L. Tonry

Cosmological models and their parameters are widely debated because of theoretical and observational mismatches of the standard cosmological model, especially the current discrepancy between the value of the Hubble constant, $H_{0}$,…

宇宙学与河外天体物理 · 物理学 2023-01-31 Aleksander Łukasz Lenart , Giada Bargiacchi , Maria Giovanna Dainotti , Shigehiro Nagataki , Salvatore Capozziello

Combining the `time-delay distance' ($D_{\Delta t}$) measurements from galaxy lenses and other distance indicators provides model-independent determinations of the Hubble constant ($H_0$) and spatial curvature ($\Omega_{K,0}$), only based…

宇宙学与河外天体物理 · 物理学 2025-03-31 Shen-Shi Du , Jun-Jie Wei , Zhi-Qiang You , Zu-Cheng Chen , Zong-Hong Zhu , En-Wei Liang

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…

宇宙学与河外天体物理 · 物理学 2020-07-08 Shivam Pandey , Marco Raveri , Bhuvnesh Jain

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…

宇宙学与河外天体物理 · 物理学 2025-06-18 Jian-Chen Zhang , Kang Jiao , Tong-Jie Zhang

We propose a new model-independent strategy to calibrate the distance relation in Type Ia supernova (SN) observations and to probe the intrinsic properties of SNe Ia, especially the absolute magnitude $M_B$, basing on strong lensing…

宇宙学与河外天体物理 · 物理学 2020-02-11 Xudong Wen , Kai Liao

Strongly lensed Type Ia supernovae (LSNe Ia) are a promising probe to measure the Hubble constant ($H_0$) directly. To use LSNe Ia for cosmography, a time-delay measurement between the multiple images, a lens-mass model, and a mass…

宇宙学与河外天体物理 · 物理学 2024-12-11 S. Huber , S. H. Suyu

{{The reappearance of supernova Refsdal with detailed modeling of the lens cluster allows us to measure the time-delay distance,}} which serves as a powerful tool to determine the Hubble constant ($H_0$). We give a…

宇宙学与河外天体物理 · 物理学 2024-05-07 Xiaolei Li , Kai Liao

In this paper, we propose to estimate the spatial curvature of the universe and the cosmic opacity in a model-independent way with expansion rate measurements, $H(z)$, and type Ia supernova (SNe Ia). On the one hand, using a nonparametric…

宇宙学与河外天体物理 · 物理学 2017-10-04 Guo-Jian Wang , Jun-Jie Wei , Zheng-Xiang Li , Jun-Qing Xia , Zong-Hong Zhu

Massive galaxy clusters at intermediate redshifts act as gravitational lenses that can magnify supernovae (SNe) occurring in background galaxies. We assess the possibility to use lensed SNe to put constraints on the mass models of galaxy…

We determine the Hubble constant $H_0$ precisely ($2.3\%$ uncertainty) in a manner independent of cosmological model through Gaussian process regression, using strong lensing and supernova data. Strong gravitational lensing of a variable…

宇宙学与河外天体物理 · 物理学 2020-06-08 Kai Liao , Arman Shafieloo , Ryan E. Keeley , Eric V. Linder

Strongly lensed quasars with time-delay measurements are well known to provide the "time-delay distances" $D_{\Delta t}=(1+z_L)D_LD_S/D_{LS}$ and the angular diameter distances to lens galaxies $D_L$. These two kinds of distances give…

宇宙学与河外天体物理 · 物理学 2019-09-19 Kai Liao
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