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When photons from distant galaxies and stars pass through our neighboring environment, the wavelengths of the photons would be shifted by our local gravitational potential. This local gravitational redshift effect can potentially have an…

宇宙学与河外天体物理 · 物理学 2019-09-04 Haoting Xu , Zhiqi Huang , Na Zhang , Yundong Jiang

Fast radio bursts (FRBs) are mysterious bright millisecond-duration radio bursts at cosmological distances. While young magnetars have been put forward as the leading source candidate, recent observations suggest there may be multiple FRB…

高能天体物理现象 · 物理学 2022-12-02 Alexandra Moroianu , Linqing Wen , Clancy W. James , Shunke Ai , Manoj Kovalam , Fiona Panther , Bing Zhang

In the literature, compact binary coalescences (CBCs) have been proposed as one of the main scenarios to explain the origin of some non-repeating fast radio bursts (FRBs). The large discrepancy between the FRB and CBC event rate densities…

高能天体物理现象 · 物理学 2020-03-25 Min-Hao Wang , Shun-Ke Ai , Zheng-Xiang Li , Nan Xing , He Gao , Bing Zhang

Modern cosmology and galaxy formation rely on an understanding of how cosmic baryons are distributed, a significant portion of which exist in the diffuse gas confined to halos. Fast Radio Bursts (FRBs) are a promising probe of the…

星系天体物理 · 物理学 2026-02-20 Samuel McCarty , Liam Connor , Ralf M. Konietzka

The detection of fast radio bursts (FRBs) in radio astronomy is a complex task due to the challenges posed by radio frequency interference (RFI) and signal dispersion in the interstellar medium. Traditional search algorithms are often…

天体物理仪器与方法 · 物理学 2024-10-07 Yong-Kun Zhang , Di Li , Yi Feng , Chao-Wei Tsai , Pei Wang , Chen-Hui Niu , Hua-Xi Chen , Yu-Hao Zhu

Fast radio bursts (FRBs) are mysterious millisecond pulses in radio, most of which originate from distant galaxies. Revealing the origin of FRBs is becoming central in astronomy. The redshift evolution of the FRB energy function, i.e., the…

The cosmic growth rate, which is related to peculiar velocity and is a primary scientific objective of galaxy spectroscopic surveys, can be inferred from the Redshift Space Distortion effect and the kinetic Sunyaev-Zel'dovich effect.…

宇宙学与河外天体物理 · 物理学 2025-04-11 Shi-Yuan Wang , Jun-Qing Xia

The possibility that primordial black holes (PBHs) form a part of dark matter has been considered for a long time but poorly constrained over a wide mass range. Fast radio bursts (FRBs) are bright radio transients with millisecond duration.…

宇宙学与河外天体物理 · 物理学 2022-04-06 Huan Zhou , Zhengxiang Li , Kai Liao , Chenhui Niu , He Gao , Zhiqi Huang , Lu Huang , Bing Zhang

Fast radio bursts (FRBs) are radio signals that last milliseconds. They originate from cosmological distances and have relatively high dispersion measures (DMs), making them being excellent distance indicators. However, the origins of the…

高能天体物理现象 · 物理学 2025-03-11 Wenqi Ma , Zhifu Gao , Biaopeng Li , Chenhui Niu , Jumei Yao , Fayin Wang

The potential association between gravitational waves (GWs) and fast radio bursts (FRBs) offers a unique multi-messenger probe for cosmology. In this paper, we develop a redshift-independent framework to constrain cosmological parameters…

宇宙学与河外天体物理 · 物理学 2026-04-06 Jiaming Zhuge , Marios Kalomenopoulos , Carl-Johan Haster , Bing Zhang

Accurate measurements of the cosmic microwave background (CMB) anisotropies with an angular resolution of a few arcminutes can be used to determine fundamental cosmological parameters such as the densities of baryons, cold and hot dark…

天体物理学 · 物理学 2016-01-13 J. Richard Bond , George Efstathiou , Max Tegmark

It has been widely shown that the cosmological parameters and dark energy can be constrained by using data from type-Ia supernovae (SNe Ia), the cosmic microwave background (CMB) anisotropy, the baryon acoustic oscillation (BAO) peak from…

天体物理学 · 物理学 2009-06-23 F. Y. Wang , Z. G. Dai , Zong-Hong Zhu

Through the relationship between dispersion measures (DM) and redshifts, fast radio bursts (FRBs) are considered to be very promising cosmological probes. In this paper, we attempted to use the DM-z relationship of FRBs to study the helium…

宇宙学与河外天体物理 · 物理学 2022-06-10 Liang Jing , Jun-Qing Xia

Five fast radio bursts (FRBs), including three apparently non-repeating ones FRB 180924, FRB 181112, and FRB 190523, and two repeaters, FRB 121102 and FRB 180916.J0158+65, have already been localized so far. We apply a method developed…

高能天体物理现象 · 物理学 2020-05-27 Zhengxiang Li , He Gao , Jun-Jie Wei , Yuan-Pei Yang , Bing Zhang , Zong-Hong Zhu

The nature of dark matter (DM) is still a mystery that may indicate the necessity for extensions of the Standard Model (SM). Light dark photons (DP) may comprise partially or entirely the observed DM density and existing limits on the DP DM…

宇宙学与河外天体物理 · 物理学 2020-10-08 Ricardo G. Landim

Fast radio bursts (FRBs) are emerging as powerful cosmological probes for constraining the baryon fraction in the intergalactic medium (IGM), offering a promising avenue to address the missing baryon problem. In this paper, we analyze…

宇宙学与河外天体物理 · 物理学 2025-06-05 Yang Liu , Yuchen Zhang , Hongwei Yu , Puxun Wu

We derive constraints on cosmological parameters using the power spectrum of galaxy clustering measured from the final two-degree field galaxy redshift survey (2dFGRS) and a compilation of measurements of the temperature power spectrum and…

Fast Radio Bursts (FRBs) carry fossil information about non-Gaussianity generated during inflation. This primordial signal is most accessible on the largest scales, where the scale-dependent bias correction $\propto…

宇宙学与河外天体物理 · 物理学 2026-04-07 Simthembile Dlamini

For future surveys of fast radio bursts (FRBs), we clarify information available from cosmic dispersion measures (DMs) through cross-correlation analyses of foreground dark matter haloes (hosting galaxies and galaxy clusters) with their…

宇宙学与河外天体物理 · 物理学 2022-03-02 Masato Shirasaki , Ryuichi Takahashi , Ken Osato , Kunihito Ioka

We use higher-redshift gamma-ray burst (GRB), HII starburst galaxy (HIIG), and quasar angular size (QSO-AS) measurements to constrain six spatially flat and non-flat cosmological models. These three sets of cosmological constraints are…

宇宙学与河外天体物理 · 物理学 2021-01-15 Shulei Cao , Joseph Ryan , Narayan Khadka , Bharat Ratra