Periodicity in fast radio bursts due to forced precession by a fallback disk

Tong, H.; Wang, W.; Wang, H. G.

doi:10.48550/arxiv.2002.10265

Cited by 7 publications

(9 citation statements)

References 30 publications

(53 reference statements)

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“…Again, although known Galactic magnetars offer no clear explanation for periodic behavior at this scale (with the possible exception of candidate magnetar 1E 1613485055 which has a measured period of 6.7 hr; De Luca et al 2006), reasonable variations in the properties of extragalactic magnetars (e.g. extremely slow rotation, precession, or presence in a binary) offer a potential explanation (Lyutikov et al 2020;Levin et al 2020;Zanazzi & Lai 2020;Beniamini et al 2020;Yang & Zou 2020;Tong et al 2020). Furthermore, several FRBs have now been localized to host galaxies with low levels of star formation (Bannister et al 2019;Ravi et al 2019), uncharacteristic of the environments of magnetars in the Milky Way as being the product of relatively typical CCSNe.…”

Section: Introductionmentioning

confidence: 98%

Implications of a "Fast Radio Burst" from a Galactic Magnetar

Margalit,

Beniamini,

Sridhar

et al. 2020

Preprint

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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 within a factor of 10 of the least energetic extragalactic FRB previously detected. Although active magnetars are commonly invoked FRB sources, several distinct mechanisms have been proposed for generating the radio emission which make different predictions for the accompanying higher frequency radiation. We show that the properties of the coincident radio and X-ray flares from SGR 1935+2154, including their approximate simultaneity and relative fluence E radio /E X ∼ 10 −5 , as well as the duration and spectrum of the X-ray emission, are consistent with extant predictions for the synchrotron maser shock model. Rather than arising from the inner magnetosphere, the X-rays are generated by (incoherent) synchrotron radiation from thermal electrons heated at the same internal shocks which produce the coherent maser emission as ultra-relativistic flare ejecta collides with a slower particle outflow (e.g. as generated by earlier flaring activity) on a radial scale ∼ 10 11 cm. Although the rate of SGR 1935+2154-like bursts in the local universe is not sufficient to contribute appreciably to the extragalactic FRB rate, the inclusion of an additional population of more active magnetars with stronger magnetic fields than the Galactic population can explain both the FRB rate as well as the repeating fraction, however only if the population of active magnetars are born at a rate that is at least two-orders of magnitude lower than that of SGR 1935+2154-like magnetars. This may imply that the more active magnetar sources are not younger magnetars formed in a similar way to the Milky Way population (e.g. via ordinary supernovae), but instead through more exotic channels such as superluminous supernovae, accretion-induced collapse or neutron star mergers.

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Section: Introductionmentioning

confidence: 98%

Implications of a "Fast Radio Burst" from a Galactic Magnetar

Margalit,

Beniamini,

Sridhar

et al. 2020

Preprint

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“…Sob'yanin (2020) suggested that the forced precession is natural and can be used to explain the period of FRBs. The fallback disk and the orbit motion may also induce the force precession (Tong et al 2020;Yang & Zou 2020). Besides, the magnetar-asteroid impact model also is proposed to explain the observed periodicity (Dai & Zhong 2020).…”

Section: Introductionmentioning

confidence: 97%

Possible periodic activity in the short bursts of SGR 1806-20: connection to fast radio bursts

Zhang,

Tu,

Wang

2021

Preprint

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Magnetars are highly magnetized neutron stars that are characterized by recurrent emission of short-duration bursts in soft gamma-rays/hard X-rays. Recently, FRB 200428 were found to be associated with an X-ray burst from a Galactic magnetar. Two fast radio bursts (FRBs) show mysterious periodic activity. However, whether magnetar X-ray bursts are periodic phenomena is unclear. In this paper, we investigate the period of SGR 1806-20 activity. More than 3000 short bursts observed by different telescopes are collected, including the observation of RXTE, HETE-2, ICE and Konus. We consider the observation windows and divide the data into two sub-samples to alleviate the effect of unevenly sample. The epoch folding and Lomb-Scargle methods are used to derive the period of short bursts. We find a possible period about 398.20±25.45 days. While other peaks exist in the periodograms. If the period is real, the connection between short bursts of magnetars and FRBs should be extensively investigated.

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“…Several models were proposed to explain the periodic activity of FRB 180916.J0158+65. In the first type of model, the ∼ 16-day period is due to magnetar free precession (Levin et al 2020;Zanazzi & Lai 2020) or orbitinduced spin precession (Yang & Zou 2020) or fallback disk-induced precession (Tong et al 2020). The basis of these studies is the early suggestion that repeating FRBs could originate from the magnetic activity of a magnetar (Popov & Postnov 2013;Lyubarsky 2014;Katz 2016;Murase et al 2016;Kashiyama & Murase 2017;Metzger et al 2017;Kumar et al 2017;Beloborodov 2017;Metzger et al 2019).…”

Section: Introductionmentioning

confidence: 99%

Periodic Fast Radio Bursts as a Probe of Extragalactic Asteroid Belts

Dai,

Zhong

2020

Preprint

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The periodic activity of repeating fast radio burst (FRB) 180916.J0158+65 was recently reported by the CHIME/FRB Collaboration team. 28 bursts from this source not only show a ∼ 16-day period with an active phase of ∼ 4.0 days but also indicate a broken power law in differential energy distribution. In this paper, we suggest that FRB 180916.J0158+65-like periodic FRBs would provide a unique probe of extragalactic asteroid belts (EABs), based on our previously-proposed pulsar-EAB impact model, in which repeating FRBs arise from an old-aged, slowly-spinning, moderately-magnetized pulsar traveling through an EAB around another stellar-mass object. These two objects form a binary and thus the observed period is in fact the orbital period. We constrain the EAB's properties by using the observed data of FRB 180916.J0158+65. We find that (1) the outer radius of the EAB is at least an order of magnitude smaller than that of its analogue in the solar system, (2) the differential size distribution of the EAB's asteroids at small diameters (large diameters) is shallower (steeper) than that of solarsystem small objects, and (3) the EAB's total mass is about one to two orders of magnitude smaller than the mass of the main asteroid belt in the solar system.

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Periodicity in fast radio bursts due to forced precession by a fallback disk

Cited by 7 publications

References 30 publications

Implications of a "Fast Radio Burst" from a Galactic Magnetar

Implications of a "Fast Radio Burst" from a Galactic Magnetar

Possible periodic activity in the short bursts of SGR 1806-20: connection to fast radio bursts

Periodic Fast Radio Bursts as a Probe of Extragalactic Asteroid Belts

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