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FRB 20121102A was the first fast radio burst to be observed to repeat. Since then, thousands of bursts have been detected by multiple radio telescopes around the world. Previous work has shown an indication of a cyclic activity level with a…

高能天体物理现象 · 物理学 2025-01-07 C. A. Braga , M. Cruces , T. Cassanelli , M. C. Espinoza-Dupouy , L. Rodriguez , L. G. Spitler , J. Vera-Casanova , P. Limaye

Fast Radio Bursts (FRBs) are mysterious bursts in the millisecond timescale at radio wavelengths. Currently, there is little understanding about the classification of repeating FRBs, based on difference in physics, which is of great…

We performed simultaneous observations at 326.5 MHz with the Ooty Radio Telescope and at 326, 610 and 1308 MHz with the Giant Meterwave Radio Telescope for a sample of 12 pulsars, where frequency dependent single pulse behaviour was…

高能天体物理现象 · 物理学 2017-08-02 Arun Naidu , Bhal Chandra Joshi , P. K Manoharan , M. A Krishnakumar

We have developed a new coherent dedispersion mode to study the emission of Fast Radio Bursts that trigger the voltage capture capability of the Australian SKA Pathfinder (ASKAP) interferometer. In principle the mode can probe emission…

Repeating Fast Radio Bursts (FRBs) can exhibit a wide range of burst repetition rates, from none to hundreds of bursts per hour. Here, we report the detection and characteristics of 60 bursts from the recently discovered FRB 20240114A,…

高能天体物理现象 · 物理学 2024-10-11 Ajay Kumar , Yogesh Maan , Yash Bhusare

We report a new Fast Radio Burst (FRB) discovered in real-time as part of the UTMOST project at the Molonglo Observatory Synthesis Radio Telescope (MOST). FRB170827 is the first detected with our low-latency ($< 24$ s),…

Among several dozen known repeating Fast radio bursts (FRBs), those precisely localized offer the best opportunities to explore their multi-wavelength counterparts, which are key to uncovering their origins. Here we report our X-ray,…

高能天体物理现象 · 物理学 2025-03-20 Zhen Yan , Wenfei Yu , Kim L. Page , Jie Lin , Di Li , Chenhui Niu , Casey Law , Bing Zhang , Shami Chatterjee , Xian Zhang , Reshma Anna-Thomas

We survey the spectro-temporal properties of fast radio bursts from FRB 20121102A observed by earlier studies across a wide range of frequencies. We investigate 167 bursts from FRB 20121102A spanning frequencies 1--7.5GHz, durations of less…

高能天体物理现象 · 物理学 2023-04-19 Mohammed A. Chamma , Fereshteh Rajabi , Aishwarya Kumar , Martin Houde

FRB 20180916B is a well-studied repeating fast radio burst source. Its proximity (~150 Mpc), along with detailed studies of the bursts, have revealed many clues about its nature -- including a 16.3-day periodicity in its activity. Here we…

In this study, we report on a detailed single pulse analysis of the radio emission from a rotating radio transient (RRAT) J1918$-$0449 which is the first RRAT discovered with the five hundred meter aperture spherical radio telescope (FAST).…

高能天体物理现象 · 物理学 2022-07-27 J. L. Chen , Z. G. Wen , J. P. Yuan , N. Wang , D. Li , H. G. Wang , W. M. Yan , R. Yuen , P. Wang , Z. Wang , W. W. Zhu , J. R. Niu , C. C. Miao , M. Y. Xue , B. P. Gong

Here, we report non-detection of radio bursts from Fast Radio Burst FRB 121102 during two 5-hour observation sessions on the Robert C. Byrd 100-m Green Bank Telescope in West Virginia, USA, on December 11, 2017, and January 12, 2018. In…

Recent multi-telescope observations of the repeating Fast Radio Burst FRB 121102 reveal a Gaussian-like spectral profile and associate the event with a dwarf metal-poor galaxy at a cosmological redshift of 0.19. Assuming that this event…

高能天体物理现象 · 物理学 2017-09-20 Anastasia Fialkov , Abraham Loeb

We analyze the statistics of pulse arrival times in fast radio burst (FRB) 121102 and demonstrate that they are remarkably similar to statistics of magnetar high-energy short bursts. Motivated by this correspondence, we propose that…

高能天体物理现象 · 物理学 2019-07-02 Zorawar Wadiasingh , Andrey Timokhin

The MeerKAT telescope represents an outstanding opportunity for radio pulsar timing science with its unique combination of a large collecting area and aperture efficiency (effective area $\sim$7500 m$^2$), system temperature ($T<20$K), high…

We report on the detection of MKT J174641.0$-$321404, a new radio transient found in untargeted searches of wide-field MeerKAT radio images centred on the black hole X-ray binary H1743$-$322. MKT J174641.0$-$321404 is highly variable at 1.3…

The repeating FRB 121102 emitted a pair of discrete bursts separated by 37 ms and another pair, 131 days later, separated by 34 ms, during observations that detected FRB at a mean rate of $2 \times 10^{-4}$/s. Here I assume that these…

高能天体物理现象 · 物理学 2017-11-10 J. I. Katz

Fast Radio Bursts (FRBs) are bright radio transients with millisecond durations which typically occur at extragalactic distances. The association of FRB 20200428 with the Galactic magnetar SGR J1935+2154 strongly indicates that they could…

高能天体物理现象 · 物理学 2024-12-13 Chen Du , Yong-Feng Huang , Zhi-Bin Zhang , Alexander Rodin , Viktoriya Fedorova , Abdusattar Kurban , Di Li

A new generation of radio telescopes with excellent sensitivity, instantaneous {\it uv} coverage, and large fields of view, are providing unprecedented opportunities for performing commensal transient searches. Here we present such a…

高能天体物理现象 · 物理学 2023-09-18 S. I. Chastain , A. J. van der Horst , A. Rowlinson , L. Rhodes , A. Andersson , R. Diretse , R. P. Fender , P. A. Woudt

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…

高能天体物理现象 · 物理学 2025-02-05 S. Bethapudi , L. G. Spitler , D. Z. Li , V. R. Marthi , M. Bause , R. A. Main , R. S. Wharton

Fast radio bursts (FRBs) are bright, unresolved, millisecond-duration flashes of radio emission originating from outside of the Milky Way. The source of these mysterious outbursts is unknown, but their high luminosity, high dispersion…

高能天体物理现象 · 物理学 2019-08-20 Jamie Holder , Ryan S. Lynch