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In an area of 3,300 square degrees, a search for pulsed dispersed signals using a neural network has been carried out. During the six-month observation period, pulses were detected from fifteen known pulsars as well as three new rotating…

High Energy Astrophysical Phenomena · Physics 2025-08-18 I. V. Eldarov , S. A. Tyul'bashev , M. A. Kitaeva , G. E. Tyul'basheva

We present a new fast radio burst (FRB) at 920 MHz discovered during commensal observations conducted with the Australian Square Kilometre Array Pathfinder (ASKAP) as part of the Commensal Real-time ASKAP Fast Transients (CRAFT) survey. FRB…

We have conducted a search for bright repeating Fast Radio Bursts in our nearby Universe with the Australian Square Kilometer Array Pathfinder (ASKAP) in single-dish mode. We used eight ASKAP 12-m dishes, each equipped with a Chequerboard…

High Energy Astrophysical Phenomena · Physics 2019-03-27 S. Bhandari , K. W. Bannister , C. W. James , R. M. Shannon , C. M. Flynn , M. Caleb , J. D. Bunton

Magnetars are a promising candidate for the origin of Fast Radio Bursts (FRBs). The detection of an extremely luminous radio burst from the Galactic magnetar SGR J1935+2154 on 2020 April 28 added credence to this hypothesis. We report on…

Rotating Radio Transients (RRATs) are a class of pulsars characterized by sporadic bursts of radio emission, which make them difficult to detect in typical periodicity-based pulsar searches. Using newly developed post-processing techniques…

High Energy Astrophysical Phenomena · Physics 2015-06-12 Chen Karako-Argaman , the GBT Drift-scan Collaboration

We report the discovery and timing results for five millisecond pulsars (MSPs) from the Arecibo PALFA survey: PSRs J1906+0055, J1914+0659, J1933+1726, J1938+2516, and J1957+2516. Timing observations of the 5 pulsars were conducted with the…

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

Since January 2017, the Commensal Real-time ASKAP Fast Transients survey (CRAFT) has been utilising commissioning antennas of the Australian SKA Pathfinder (ASKAP) to survey for fast radio bursts (FRBs) in fly's eye mode. This is the first…

We present the results of a radio transient and polarisation survey towards the Galactic Centre, conducted as part of the Australian Square Kilometre Array Pathfinder Variables and Slow Transients pilot survey. The survey region consisted…

We discuss possible electromagnetic signals accompanying Fast Radio Bursts (FRBs) that are expected in the scenario where FRBs originate in neutron star magnetospheres. For models involving Crab-like giant pulses, no appreciable…

High Energy Astrophysical Phenomena · Physics 2016-06-22 Maxim Lyutikov , Duncan R. Lorimer

Context. Fast Radio Burst 20180916B is a repeating FRB whose activity window has a 16.34 day periodicity that also shifts and varies in duration with the observing frequency. Recently, arxiv:2205.09221 reported the FRB has started to show…

High Energy Astrophysical Phenomena · Physics 2025-02-05 S. Bethapudi , L. G. Spitler , D. Z. Li , V. R. Marthi , M. Bause , R. A. Main , R. S. Wharton

The physical origin of fast radio bursts (FRBs) remains an unsolved mystery in astrophysics, with the magnetar central engine model as the leading framework. Systematically searching for physical associations between FRBs and the energetic…

High Energy Astrophysical Phenomena · Physics 2026-03-20 Hao-Hao Chen , Wen-Tao Xu , Xin-Yu Liang , Ming-Xuan Lu , Can-Min Deng

FRB 20180916B is a repeating fast radio burst (FRB) with an activity period of 16.33 days. In previous observations ranging from $\sim 150-1400$ MHz, the activity window was found to be frequency dependent, with lower frequency bursts…

High Energy Astrophysical Phenomena · Physics 2023-07-12 S. Bethapudi , L. G. Spitler , R. A. Main , D. Z. Li , R. S. Wharton

We describe the Survey for Pulsars and Extragalactic Radio Bursts (SUPERB), an ongoing pulsar and fast transient survey using the Parkes radio telescope. SUPERB involves real-time acceleration searches for pulsars and single-pulse searches…

We detail the emission behaviors of three long-period pulsars detected using the Five-hundred-meter Aperture Spherical radio Telescope (FAST) during the CRAFTS survey. Their rotational periods range from 1.83 s to 4.75 s, and the null…

High Energy Astrophysical Phenomena · Physics 2025-02-07 H. M. Tedila , D. Li , P. Wang , R. Yuen , J. P. Yuan , N. Wang , Z. G. Wen , S. J. Dang , A. G. Tegegne , R. Rejep , C. C. Miao , FAST Collaboration

Context. Fast Radio Bursts (FRBs) are millisecond-long bursts uniquely detected at radio frequencies. FRB 131104 is the only case for which a $\gamma$-ray transient positionally and temporally consistent was claimed. This high-energy…

High Energy Astrophysical Phenomena · Physics 2019-11-06 R. Martone , C. Guidorzi , R. Margutti , L. Nicastro , L. Amati , F. Frontera , M. Marongiu , M. Orlandini , E. Virgilli

Fast radio bursts (FRBs) are mysterious millisecond-duration radio transients of extragalactic origin. Some of them repeat, while others apparently do not. Investigations of periodic activity in repeating FRB have been conducted to probe…

Reflections from objects in Earth orbit can produce sub-second, star-like optical flashes similar to astrophysical transients. Reflections have historically caused false alarms for transient surveys, but the population has not been…

We present the first blind interferometric detection and imaging of a millisecond radio transient with an observation of transient pulsar J0628+0909. We developed a special observing mode of the Karl G. Jansky Very Large Array (VLA) to…

Astrophysics of Galaxies · Physics 2015-06-11 Casey J. Law , Geoffrey C. Bower , Martin Pokorny , Michael P. Rupen , Ken Sowinski

We have searched three Parkes multibeam 1.4 GHz surveys for the presence of fast radio bursts (FRBs) out to a dispersion measure (DM) of 5000 pc cm$^{-3}$. These surveys originally targeted the Magellanic Clouds (in two cases) and…

High Energy Astrophysical Phenomena · Physics 2016-06-01 F. Crawford , A. Rane , L. Tran , K. Rolph , D. R. Lorimer , J. P. Ridley