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Precise estimation of cosmological parameters from the cosmic microwave background (CMB) remains a central goal of modern cosmology and a key test of inflationary physics. However, this task is fundamentally limited by strong foreground…

宇宙学与河外天体物理 · 物理学 2026-04-03 Larissa Santos , Camila P. Novaes , Elisa G. M. Ferreira , Carlo Baccigalupi

Observations with the Canadian Hydrogen Intensity Mapping Experiment (CHIME) have been used to measure the 21 cm intensity mapping auto power spectrum, at $z\sim 1$, over a frequency range from 608.2 MHz to 707.8 MHz at wavenumbers…

As the particle physics community needs higher and higher precisions in order to test our current model of the subatomic world, larger and larger datasets are necessary. With upgrades scheduled for the detectors of colliding-beam…

数据分析、统计与概率 · 物理学 2025-09-09 Fotis I. Giasemis

The origins of fast radio bursts (FRBs), astronomical transients with millisecond timescales, remain unknown. One of the difficulties stems from the possibility that observed FRBs could be heterogeneous in origin; as some of them have been…

Fast radio bursts (FRBs) are millisecond-duration radio transients from cosmological distances. Their isotropic energies follow a power-law distribution with a possible exponential cutoff, but their intrinsic redshift distribution, which…

高能天体物理现象 · 物理学 2020-11-25 Rachel C. Zhang , Bing Zhang , Ye Li , Duncan R. Lorimer

Precise localizations of a small number of repeating fast radio bursts (FRBs) using very long baseline interferometry (VLBI) have enabled multiwavelength follow-up observations revealing diverse local environments. However, the 2--3\% of…

高能天体物理现象 · 物理学 2025-06-25 FRB Collaboration , Thomas C. Abbott , Daniel Amouyal , Shion E. Andrew , Kevin Bandura , Mohit Bhardwaj , Kalyani Bhopi , Yash Bhusare , Charanjot Brar , Alice Cai , Tomas Cassanelli , Shami Chatterjee , Jean-François Cliche , Amanda M. Cook , Alice P. Curtin , Evan Davies-Velie , Matt Dobbs , Fengqiu Adam Dong , Yuxin Dong , Gwendolyn Eadie , Tarraneh Eftekhari , Wen-fai Fong , Emmanuel Fonseca , B. M. Gaensler , Nina Gusinskaia , Jason W. T. Hessels , Danté M. Hewitt , Jeff Huang , Naman Jain , Ronniy. C. Joseph , Lordrick Kahinga , Victoria M. Kaspi , Afrasiyab , Khan , Bikash Kharel , Adam E. Lanman , Magnus L'Argent , Mattias Lazda , Calvin Leung , Robert Main , Lluis Mas-Ribas , Kiyoshi W. Masui , Kyle McGregor , Ryan Mckinven , Juan Mena-Parra , Daniele Michilli , Nicole Mulyk , Mason Ng , Kenzie Nimmo , Ayush Pandhi , Swarali Shivraj Patil , Aaron B. Pearlman , Ue-Li Pen , Ziggy Pleunis , J. Xavier Prochaska , Masoud Rafiei-Ravandi , Scott M. Ransom , Gurman Sachdeva , Mawson W. Sammons , Ketan R. Sand , Paul Scholz , Vishwangi Shah , Kaitlyn Shin , Seth R. Siegel , Sunil Simha , Kendrick Smith , Ingrid Stairs , David C. Stenning , Haochen Wang , Thomas Boles , Ismaël Cognard , Tammo Jan Dijkema , Alexei V. Filippenko , Marcin P. Gawroński , Wolfgang Herrmann , Charles D. Kilpatrick , Franz Kirsten , Shawn Knabel , Omar S. Ould-Boukattine , Hadrien Paugnat , Weronika Puchalska , William Sheu , Aswin Suresh , Aaron Tohuvavohu , Tommaso Treu , WeiKang Zheng

Recently, about five hundred fast radio bursts (FRBs) detected by CHIME/FRB Project have been reported. The vast amounts of data would make FRBs a promising low-redshift cosmological probe in the forthcoming years, and thus the issue of how…

宇宙学与河外天体物理 · 物理学 2022-02-04 Xing-Wei Qiu , Ze-Wei Zhao , Ling-Feng Wang , Jing-Fei Zhang , Xin Zhang

The volume of research on fast radio bursts (FRBs) observation have been seeing a dramatic growth. To facilitate the systematic analysis of the FRB population, we established a database platform, Blinkverse (https://blinkverse.alkaidos.cn),…

We propose Fast Radio Burst (FRB) timing, which uses the precision measurements of the arrival time differences of repeated FRB signals along multiple sightlines, as a new probe of gravitational waves (GWs) around nHz to $\mu$Hz…

广义相对论与量子宇宙学 · 物理学 2024-07-19 Zhiyao Lu , Lian-Tao Wang , Huangyu Xiao

Plasma impedance probes (PIPs) are a type of RF probe that primarily measure electron density. This work introduces two advancements: a streamlined analytical model for interpreting PIP-monopole measurements and techniques for achieving…

等离子体物理 · 物理学 2023-07-27 John W. Brooks , Erik M. Tejero , Matthew C. Paliwoda , Michael S. McDonald

The Gamma-Ray Monitor (GRM) is a key payload of the Space-based multiband astronomical Variable Objects Monitor (SVOM) mission, which is designed to detect gamma ray bursts (GRBs) within the energy range of 15 keV to 5 MeV. The GRM…

Searching for fleeting radio transients like fast radio bursts (FRBs) with wide-field radio telescopes has become a common challenge in data-intensive science. Conventional algorithms normally cost enormous time to seek candidates by…

We have used the 2- year Differential Microwave Radiometer data from the COsmic Background Explorer (COBE) satellite to systematically search for millimetric (31 - 90 GHz) emission from the Gamma Ray Bursts (GRBs) in the Burst And Transient…

天体物理学 · 物理学 2009-10-30 S. Ali , R. K. Schaefer , M. Limon , L. Piccirillo

Studies of the time-domain structure of fast radio bursts (FRBs) require an accurate estimate of the FRB dispersion measure in order to recover the intrinsic burst shape. Furthermore, the exact DM is itself of interest when studying the…

Fast radio bursts (FRBs), especially those from repeating sources, exhibit a rich variety of morphologies in their dynamic spectra (or waterfalls). Characterizing these morphologies and spectro-temporal properties is a key strategy in…

高能天体物理现象 · 物理学 2025-11-26 Mohammed A. Chamma , Victor Pop , Fereshteh Rajabi

We present the host galaxies of four apparently non-repeating fast radio bursts (FRBs), FRBs 20181223C, 20190418A, 20191220A, and 20190425A, reported in the first Canadian Hydrogen Intensity Mapping Experiment (CHIME/FRB) catalog. Our…

Measurements of the 2.7 K cosmic microwave background (CMB) radiation now provide the most stringent constraints on cosmological models. The power spectra of the temperature anisotropies and the $E$-mode polarization of the CMB are…

宇宙学与河外天体物理 · 物理学 2010-07-01 Siddharth Savyasachi Malu , Peter T Timbie

Fast radio burst (FRB) discoveries are occurring rapidly, with thousands expected from upcoming surveys. The dispersion measures (DM) observed for FRB include important information on cosmological distances and the ionization state of the…

宇宙学与河外天体物理 · 物理学 2021-05-20 Mukul Bhattacharya , Pawan Kumar , Eric V. Linder