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The recent discovery of a Galactic fast radio burst (FRB) occurring simultaneously with an X-ray burst (XRB) from the Galactic magnetar SGR J1935+2154 implies that at least some FRBs arise from magnetar activities. We propose that FRBs are…

高能天体物理现象 · 物理学 2021-10-04 Yuan-Pei Yang , Bing Zhang

Lyutikov (2002) predicted "radio emission from soft gamma-ray repeaters (SGRs) during their bursting activity". Detection of a Mega-Jansky radio burst in temporal coincidence with high energy bursts from a Galactic magnetar SGR 1935+2154…

高能天体物理现象 · 物理学 2020-05-13 Maxim Lyutikov , Sergey Popov

Magnetars are young, magnetically-powered neutron stars possessing the strongest magnetic fields in the Universe. Fast Radio Bursts (FRBs) are extremely intense millisecond-long radio pulses of primarily extragalactic origin, and a leading…

A luminous radio burst was recently detected in temporal coincidence with a hard X-ray flare from the Galactic magnetar SGR 1935+2154 with a time and frequency structure consistent with cosmological fast radio bursts (FRB) and a fluence…

高能天体物理现象 · 物理学 2020-08-26 Ben Margalit , Paz Beniamini , Navin Sridhar , Brian D. Metzger

Extremely bright coherent radio bursts with millisecond duration, reminiscent of cosmological fast radio bursts (FRBs), were co-detected with anomalously-hard X-ray bursts from a Galactic magnetar SGR 1935$+$2154. We investigate the…

高能天体物理现象 · 物理学 2022-02-18 Shotaro Yamasaki , Kazumi Kashiyama , Kohta Murase

Highly magnetized neutron stars are a source of extreme transients observed in different bands, like the fast radio burst (FRB) and associated hard X-ray burst from the Galactic magnetar SGR 1935+2154. The origin of such outbursts, hard…

高能天体物理现象 · 物理学 2024-05-07 J. F. Mahlmann

Fast radio bursts (FRBs) are millisecond-duration, bright radio signals (fluence $\mathrm{0.1 - 100\,Jy\,ms}$) emitted from extragalactic sources of unknown physical origin. The recent CHIME/FRB and STARE2 detection of an extremely bright…

高能天体物理现象 · 物理学 2020-11-18 F. Kirsten , M. Snelders , M. Jenkins , K. Nimmo , J. van den Eijnden , J. Hessels , M. Gawronski , J. Yang

A fireball of radiation plasma created near the surface of a neutron star (NS) expands under its own pressure along magnetic field lines, and produces photon emission and relativistic matter outflow. We comprehensively classify the…

高能天体物理现象 · 物理学 2023-01-18 Tomoki Wada , Kunihito Ioka

Fast Radio Bursts (FRBs) are cosmological sub-second bursts of coherent radio emission, whose source is still unknown. To date, the galactic magnetar SGR 1935+2154 is the only astrophysical object known to emit radio bursts akin to FRBs,…

高能天体物理现象 · 物理学 2024-07-08 Simone Dall'Osso , Riccardo La Placa , Luigi Stella , Pavel Bakala , Andrea Possenti

Fast radio bursts are bright, millisecond-scale radio flashes of yet unknown physical origin. Recently, their extragalactic nature has been demonstrated and an increasing number of the sources have been found to repeat. Young, highly…

高能天体物理现象 · 物理学 2021-04-21 A. Ridnaia , D. Svinkin , D. Frederiks , A. Bykov , S. Popov , R. Aptekar , S. Golenetskii , A. Lysenko , A. Tsvetkova , M. Ulanov , T. Cline

Recently, a fast radio burst (FRB)-like event is found to be associated with a Galactic magnetar, SGR 1935+2154, accompanied by an X-ray burst. We find this radio burst challenges the typical emission mechanisms involving magnetars, which…

高能天体物理现象 · 物理学 2020-08-27 Jie-Shuang Wang

The most common form of magnetar activity is short X-ray bursts, with durations from milliseconds to seconds, and luminosities ranging from $10^{36}$ to $10^{43}\ {\rm erg}\,{\rm s}^{-1}$. Recently, an X-ray burst from the galactic magnetar…

高能天体物理现象 · 物理学 2022-08-02 Yajie Yuan , Andrei M. Beloborodov , Alexander Y. Chen , Yuri Levin , Elias R. Most , Alexander A. Philippov

Recently, one fast radio burst, FRB 200428, was detected from the Galactic magnetar SGR J1935+2154 during one X-ray burst. This suggests that magnetars can make FRBs. On the other hand, the majority of X-ray bursts from SGR J1935+2154 are…

高能天体物理现象 · 物理学 2021-01-27 Bing Zhang

Fast radio bursts (FRBs) are millisecond duration transients observed in the radio band, with their origin and radiation mechanism remaining unclear to date. Growing evidence indicates that at least some FRBs originate from magnetars and…

高能天体物理现象 · 物理学 2024-11-08 Yu-Chen Huang , Zi-Gao Dai

Since their discovery in 2007, much effort has been devoted to uncovering the sources of the extragalactic, millisecond-duration fast radio bursts (FRBs). A class of neutron star known as magnetars is a leading candidate source of FRBs.…

The megajansky radio burst, FRB 20200428, and other bright radio bursts detected from the Galactic source SGR J1935+2154 suggest that magnetars can make fast radio bursts (FRBs), but the emission site and mechanism of FRB-like bursts are…

Fast radio bursts (FRBs) are millisecond radio pulses with extremely high bright temperature. Their physical origin is still a mystery. The discovery of FRB 20020428 supports the idea that at least a portion of FRBs is generated by…

高能天体物理现象 · 物理学 2025-07-23 H. T. Lan , S. X. Yi , F. Y. Wang

Fast radio bursts (FRB) are enigmatic powerful single radio pulses with durations of several milliseconds and high brightness temperatures suggesting coherent emission mechanism. For the time being a number of extragalactic FRBs have been…

高能天体物理现象 · 物理学 2021-08-23 D. Kostunin , H. Ashkar , F. Schüssler , G. Rowell
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