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The Galactic center has some of the highest stellar densities in the Galaxy and a range of interstellar scattering properties that may aid in the detection of new radio-selected transient events. Here we describe a search for radio…

High Energy Astrophysical Phenomena · Physics 2016-12-14 Anirudh Chiti , Shami Chatterjee , Robert Wharton , James Cordes , T. Joseph W. Lazio , David L. Kaplan , Geoffrey C. Bower , Steve Croft

Improving survey specifications are causing an exponential rise in pulsar candidate numbers and data volumes. We study the candidate filters used to mitigate these problems during the past fifty years. We find that some existing methods…

Instrumentation and Methods for Astrophysics · Physics 2016-04-27 R. J. Lyon , B. W. Stappers , S. Cooper , J. M. Brooke , J. D. Knowles

Fast radio bursts (FRBs) are extremely strong radio flares lasting several milliseconds, most of which come from unidentified objects at a cosmological distance. They can be apparently repeating or not. In this paper, we analyzed 18…

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…

High Energy Astrophysical Phenomena · Physics 2021-10-20 Bo Han Chen , Tetsuya Hashimoto , Tomotsugu Goto , Seong Jin Kim , Daryl Joe D. Santos , Alvina Y. L. On , Ting-Yi Lu , Tiger Y. -Y. Hsiao

Fast Radio Bursts (FRBs) are enigmatic millisecond-duration radio transients of extra-galactic origin, whose underlying mechanisms and progenitors remain poorly understood. FRBs are broadly classified into two categories: repeating FRBs,…

Extragalactic fast radio bursts (FRBs) are a new class of astrophysical transients with unknown origins that have become a main focus of radio observatories worldwide. FRBs are highly energetic ($\sim 10^{36}$-$10^{42}$ ergs) flashes that…

Instrumentation and Methods for Astrophysics · Physics 2023-04-18 Masoud Rafiei-Ravandi , Kendrick M. Smith

Extreme precision radial velocity (EPRV) surveys usually require extensive observational baselines to confirm planetary candidates, making them resource-intensive. Traditionally, periodograms are used to identify promising candidate signals…

Earth and Planetary Astrophysics · Physics 2025-10-09 Anoop Gavankar , Tanish Mittal , Joe Ninan , Shravan Hanasoge

Searches for millisecond-duration, dispersed single pulses have become a standard tool used during radio pulsar surveys in the last decade. They have enabled the discovery of two new classes of sources: rotating radio transients and fast…

Instrumentation and Methods for Astrophysics · Physics 2018-08-17 D. Michilli , J. W. T. Hessels , R. J. Lyon , C. M. Tan , C. Bassa , S. Cooper , V. I. Kondratiev , S. Sanidas , B. W. Stappers , J. van Leeuwen

The proper classification of plasma regions in near-Earth space is crucial to perform unambiguous statistical studies of fundamental plasma processes such as shocks, magnetic reconnection, waves and turbulence, jets and their combinations.…

Fast Radio Bursts (FRBs) are millisecond dispersed radio pulses of predominately extra-galactic origin. Although originally discovered at GHz frequencies, most FRBs have been detected between 400 to 800 MHz. Nevertheless, only a handful of…

Instrumentation and Methods for Astrophysics · Physics 2024-05-24 M. Sokolowski , G. Aniruddha , C. Di Pietrantonio , C. Harris , D. C. Price , S. McSweeney , R. B. Wayth , N. D. R. Bhat

Recent discoveries of multiple long-period pulsars (periods ${\sim}10\,$s or larger) are starting to challenge the conventional notion that coherent radio emission cannot be produced by objects that are below the many theorised death lines.…

High Energy Astrophysical Phenomena · Physics 2024-09-23 G. Grover , N. D. R. Bhat , S. J. McSweeney

In this paper we consider the fact that the simple criterion used to label fast radio transient events as either fast radio bursts (FRBs, thought to be extragalactic with as yet unknown progenitors) or rotating radio transients (RRATs,…

High Energy Astrophysical Phenomena · Physics 2016-04-25 E. F. Keane

The Five-hundred-meter Aperture Spherical radio Telescope (FAST) has discovered more than 650 new pulsars, which account for 20% of our known Galactic pulsar population. In this paper, we estimate the prospect of a pulsar survey with a…

High Energy Astrophysical Phenomena · Physics 2023-08-01 Mengyao Xue , Weiwei Zhu , Xiangping Wu , Renxin Xu , Hongguang Wang

Blazars are a subclass of active galactic nuclei with relativistic jets pointing toward the observer. They are notable for their flux variability at all observed wavelengths and timescales. Together with simultaneous measurements at lower…

High Energy Astrophysical Phenomena · Physics 2025-02-21 Hermann Stolte , Jonas Sinapius , Iftach Sadeh , Elisa Pueschel , Matthias Weidlich , David Berge

FRB180301 is one of the most actively repeating fast radio bursts (FRBs) which has shown polarization angle changes in its radio burst emission, an indication for their likely origin in the magnetosphere of a highly-magnetized neutron star.…

Machine Learning and Deep Learning are computational tools that fall within the domain of artificial intelligence. In recent years, numerous research works have advanced the application of machine and deep learning in various fields,…

The next generation of observatories will facilitate the discovery of new types of astrophysical transients. The detection of such phenomena, whose characteristics are presently poorly constrained, will hinge on the ability to perform blind…

High Energy Astrophysical Phenomena · Physics 2019-02-15 Iftach Sadeh

Fast radio bursts (FRBs) are millisecond-duration radio flashes of extragalactic origin, with magnetars implicated as viable central engines. Yet their triggering and radiation mechanisms remain unknown. Radio telescopes inevitably record…

High Energy Astrophysical Phenomena · Physics 2026-02-27 Chen-Ran Hu , Yong-Feng Huang , Jin-Jun Geng , Chen Deng , Ze-Cheng Zou , Xiao-Fei Dong , Yi-Dan Wang , Pei Wang , Fan Xu , Lang Cui , Song-Bo Zhang , Xue-Feng Wu

Fast Radio Bursts (FRBs) are millisecond-duration radio pulses with largely unknown origins, with a subset exhibiting repeating behavior. Magnetars highly magnetized neutron stars and a leading progenitor candidate for FRBs also produce…

High Energy Astrophysical Phenomena · Physics 2025-12-12 Ellen C. C. Lin , Shotaro Yamasaki , Tomotsugu Goto , Tetsuya Hashimoto
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