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The rapid accumulation of observed Fast Radio Bursts (FRBs) originating from cosmological distances makes it likely that some will be strongly lensed by intervening matter along the line of sight. Detection of lensed FRB repeaters, which…

Cosmology and Nongalactic Astrophysics · Physics 2022-09-09 Tal Adi , Ely D. Kovetz

Fast Radio Bursts (FRBs) are a promising tool for studying the low-density universe as their dispersion measures (DM) are extremely sensitive probes of electron column density. Active Galactic Nuclei (AGN) inject energy into the…

Astrophysics of Galaxies · Physics 2022-03-14 Adam J. Batten , Alan R. Duffy , Chris Flynn , Vivek Gupta , Emma Ryan-Weber , Nastasha Wijers

Using the Wind/WAVES radio observations from 2010-2013, we present an analysis of the 123 decametric-hectometric (DH) type II solar radio bursts during this period, the associated type III burst properties, and their correlation with solar…

Solar and Stellar Astrophysics · Physics 2015-08-19 L. M. Winter , K. Ledbetter

The spatial curvature of the Universe remains a central question in modern cosmology. In this work, we explore the potential of localized Fast Radio Bursts (FRBs) as a novel tool to constrain the cosmic curvature parameter $\Omega_k$ in a…

Cosmology and Nongalactic Astrophysics · Physics 2026-01-27 Jéferson A. S. Fortunato , Wiliam S. Hipólito-Ricaldi , Gustavo E. Romero

Fast radio bursts (FRBs) emit broad band radio wave radiation that may, in rare cases, encode atomic hydrogen (HI) absorption signals produced as they traverse the interstellar medium of their host galaxies. Combining such signals with high…

High Energy Astrophysical Phenomena · Physics 2026-02-12 Hugh Roxburgh , Marcin Glowacki , Apurba Bera , Clancy James

Millimeter wave (mmWave) sensing is an emerging technology with applications in 3D object characterization and environment mapping. However, realizing precise 3D reconstruction from sparse mmWave signals remains challenging. Existing…

Computer Vision and Pattern Recognition · Computer Science 2023-11-23 Xingyu Chen , Xinyu Zhang , Qiyue Xia , Xinmin Fang , Chris Xiaoxuan Lu , Zhengxiong Li

FRB 121102 is the only known repeating fast radio burst source. Here we analyze a wide-frequency-range (1-8 GHz) sample of high-signal-to-noise, coherently dedispersed bursts detected using the Arecibo and Green Bank telescopes. These…

By assuming the inverse square law of solar wind plasma density as representative of other stars, it is shown that just outside a star the {\it outward} deflection of a passing radio signal at $\nu\approx 1$~GHz (which is capable of…

High Energy Astrophysical Phenomena · Physics 2025-08-11 Richard Lieu

The dispersion measures (DMs) of Fast Radio Bursts (FRBs) arise predominantly from free electrons in the large-scale structure of the Universe. The increasing number of FRB observations have started to empirically constrain the distribution…

Cosmology and Nongalactic Astrophysics · Physics 2025-07-18 Ralf M. Konietzka , Liam Connor , Vadim A. Semenov , Angus Beane , Volker Springel , Lars Hernquist

An unusual solar burst was observed simultaneously by two decameter radio telescopes UTR-2 (Kharkov, Ukraine) and URAN-2 (Poltava, Ukraine) on 3 June 2011 in the frequency range 16-28 MHz. The observed radio burst has some unusual…

FRB 121102, the only repeating fast radio burst (FRB) known to date, was discovered at 1.4 GHz and shortly after the discovery of its repeating nature, detected up to 2.4 GHz. Here we present three bursts detected with the 100-m Effelsberg…

RF emissions detection, classification, and spectro-temporal localization are crucial not only for tasks relating to understanding, managing, and protecting the RF spectrum, but also for safety and security applications such as detecting…

Networking and Internet Architecture · Computer Science 2021-07-13 Hai N. Nguyen , Marinos Vomvas , Triet Vo-Huu , Guevara Noubir

Large aperture ground based solar telescopes allow the solar atmosphere to be resolved in unprecedented detail. However, observations are limited by Earths turbulent atmosphere, requiring post image corrections. Current reconstruction…

Solar and Stellar Astrophysics · Physics 2025-06-06 Christoph Schirninger , Robert Jarolim , Astrid M. Veronig , Christoph Kuckein

Effective utilization of photovoltaic (PV) plants requires weather variability robust global solar radiation (GSR) forecasting models. Random weather turbulence phenomena coupled with assumptions of clear sky model as suggested by Hottel…

Computer Vision and Pattern Recognition · Computer Science 2017-12-12 Subhadip Dey , Sawon Pratiher , Saon Banerjee , Chanchal Kumar Mukherjee

One of the key limitations of large-scale structure surveys of the current and future generation, such as Euclid, LSST-Rubin or Roman, is the influence of feedback processes on the distribution of matter in the Universe. This effect, called…

Cosmology and Nongalactic Astrophysics · Physics 2026-03-24 Robert Reischke , Dennis Neumann , Klara Antonia Bertmann , Steffen Hagstotz , Hendrik Hildebrandt

Fast radio bursts (FRBs) are a recently discovered class of GHz-band, ms-duration, Jy-level-flux astrophysical transients, which origin is still a mystery. Exploring their gamma-ray counterpart is crucial for constraining their origin and…

High Energy Astrophysical Phenomena · Physics 2023-07-05 G. Principe , L. Di Venere , M. Negro , N. Di Lalla , N. Omodei , R. Di Tria , M. N. Mazziotta , F. Longo

Fast Radio Bursts (FRBs) are a class of short-duration transients at radio wavelengths with inferred astrophysical origin. The prototypical FRB is a broadband signal that occurs over the extent of the receiver frequency range, is narrow in…

Instrumentation and Methods for Astrophysics · Physics 2018-09-12 Griffin Foster , Aris Karastergiou , Marisa Geyer , Mayuresh Surnis , Golnoosh Golpayegani , Kejia Lee , Duncan Lorimer , Danny C. Price , Kaustubh Rajwade

Fast radio bursts (FRBs) are luminous, millisecond-duration transients that offer great potential for probing the universe, yet their physical origins remain unclear. The dispersion measure (DM) and scattering time ($\tau$) distributions…

High Energy Astrophysical Phenomena · Physics 2025-06-24 Jian-Feng Mo , Weishan Zhu , Long-Long Feng

Fast Radio Bursts (FRBs) are millisecond-duration radio transients of extragalactic origin. Classifying repeating FRBs is essential for understanding their emission mechanisms, but remains challenging due to their short durations, high…

High Energy Astrophysical Phenomena · Physics 2026-01-23 An-Chieh Hsu , Tetsuya Hashimoto , Tomotsugu Goto , Tomoki Wada , Bjorn Jasper Raquel

Existing oriented object detection methods commonly use metric AP$_{50}$ to measure the performance of the model. We argue that AP$_{50}$ is inherently unsuitable for oriented object detection due to its large tolerance in angle deviation.…

Computer Vision and Pattern Recognition · Computer Science 2024-04-09 Ying Zeng , Yushi Chen , Xue Yang , Qingyun Li , Junchi Yan