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Fast Radio Bursts (FRBs) are a class of highly energetic, mostly extragalactic radio transients lasting for a few milliseconds. While over 600 FRBs have been published so far, their origins are presently unclear, with some theories for…

Fast radio bursts (FRBs) are astrophysical transients of currently unknown origin, and so far several events have been detected at extragalactic distances. The dispersion measure (DM) of the radio signal is a probe of the integrated…

Cosmology and Nongalactic Astrophysics · Physics 2021-01-13 Robert Reischke , Steffen Hagstotz , Robert Lilow

Fast radio bursts (FRBs) are enigmatic extragalactic radio transients with unknown origins. We performed comprehensive Monte Carlo simulations based on the first CHIME/FRB catalog to test whether the FRB population tracks the cosmic star…

High Energy Astrophysical Phenomena · Physics 2025-06-13 Min Meng , Can-Min Deng

Fast radio burst (FRB) is a type of extragalactic radio signal characterized by millisecond duration, extremely high brightness temperature, and large dispersion measure. It remains a mystery in the universe. Advancements in instrumentation…

High Energy Astrophysical Phenomena · Physics 2024-09-23 Qin Wu , Fa-Yin Wang

Prior-weighted logistic regression has become a standard tool for calibration in speaker recognition. Logistic regression is the optimization of the expected value of the logarithmic scoring rule. We generalize this via a parametric family…

Machine Learning · Statistics 2013-07-31 Niko Brümmer , George Doddington

Several theories exist to explain the source of the bright, millisecond duration pulses known as fast radio bursts (FRBs). If the progenitors of FRBs are non-cataclysmic, such as giant pulses from pulsars, pulsar-planet binaries, or…

The discovery of a repeating fast radio burst has led to the first precise localization, an association with a dwarf galaxy, and the identification of a coincident persistent radio source. However, further localizations are required to…

High Energy Astrophysical Phenomena · Physics 2018-09-25 T. Eftekhari , E. Berger , P. K. G. Williams , P. K. Blanchard

Fast radio bursts (FRBs) are among the most energetic and enigmatic transients in the radio sky, with mounting evidence suggesting newborn, highly magnetized neutron stars formed in core-collapse supernovae (CCSNe) as their sources. A…

High Energy Astrophysical Phenomena · Physics 2025-06-03 Wanqing Liu , Mohit Bhardwaj , Ben Margalit

Fast radio burst (FRB) source 20180916B exhibits a 16.33-day periodicity in its burst activity. It is as of yet unclear what proposed mechanism produces the activity, but polarization information is a key diagnostic. Here, we report on the…

Off-the-shelf machine learning algorithms for prediction such as regularized logistic regression cannot exploit the information of time-varying features without previously using an aggregation procedure of such sequential data. However,…

Applications · Statistics 2019-09-26 C. Gary Mena , Arno De Caigny , Kristof Coussement , Koen W. De Bock , Stefan Lessmann

This paper argues that repeating and apparently non-repeating Fast Radio Bursts are distinct classes of events produced by distinct classes of sources. I review the evidence for that division, and then discusses the statistics of these…

High Energy Astrophysical Phenomena · Physics 2024-09-12 J. I. Katz

Fast radio bursts (FRBs) and gamma-ray bursts (GRBs) are both linked to compact-object activity, yet their possible connection remains unclear. Here we perform a systematic search for spatial and temporal associations between FRBs in the…

High Energy Astrophysical Phenomena · Physics 2026-04-14 Yi-Fang Liang , Ye Li , Bao Wang , Xuan Yang , Yuan-Pei Yang , Xue-Feng Wu

Fast radio bursts (FRBs) are transient radio signals with millisecond-duration, large dispersion measure (DM) and extremely high brightness temperature. Among them, FRB 20180916B has been found to have a 16-day periodically modulated…

High Energy Astrophysical Phenomena · Physics 2024-05-15 Hao-Tian Lan , Zhen-Yin Zhao , Yu-Jia Wei , F. Y. Wang

Fast radio bursts (FRBs) are pulsed radio signals with a duration of milliseconds and a large dispersion measure (DM). Recent observations indicate that FRB 180916 and FRB 121102 show periodic activities. Some theoretical models have been…

High Energy Astrophysical Phenomena · Physics 2022-03-11 Y. J. Wei , Z. Y. Zhao , F. Y. Wang

Fast radio bursts (FRBs) are bright, energetic, radio pulses of extragalactic origin. A dichotomy has emerged in the population: some produce repeat bursts, while the majority do not. Most repeating sources only show rare repetitions, and…

We study the spectro-temporal characteristics of two repeating fast radio bursts (FRBs), namely, FRB 20180916B and FRB 20180814A, and combine the results with those from our earlier analysis on FRB 20121102A. The relationship between the…

High Energy Astrophysical Phenomena · Physics 2021-08-25 Mohammed A. Chamma , Fereshteh Rajabi , Christopher M. Wyenberg , Abhilash Mathews , Martin Houde

We investigate how the statistical properties of dispersion measure (DM) and apparent flux density/fluence of (non-repeating) fast radio bursts (FRBs) are determined by unknown cosmic rate density history [$\rhoFRB (z)$] and luminosity…

High Energy Astrophysical Phenomena · Physics 2018-08-10 Yuu Niino

Fast radio bursts (FRBs) are brief, bright, extragalactic radio flashes. Their physical origin remains unknown, but dozens of possible models have been postulated. Some FRB sources exhibit repeat bursts. Though over a hundred FRB sources…

We present a Monte Carlo-based population synthesis study of fast radio burst (FRB) dispersion and scattering focusing on the first catalog of sources detected with the Canadian Hydrogen Intensity Mapping Experiment Fast Radio Burst…

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