A living theory catalogue for fast radio bursts

Platts, Emma; Weltman, Amanda; Walters, Anthony; Tendulkar, Shriharsh P.; Gordin, Jake E. B.; Kandhai, Sulona

doi:10.1016/j.physrep.2019.06.003

Cited by 421 publications

(313 citation statements)

References 293 publications

(416 reference statements)

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“…The FRB rates derived herein can be compared with predictions for non-repeating FRB progenitors, and with the estimated birth rates of FRB sources (see Figure 2). All astrophysical FRB progenitors (excluding those attributed to new physics) are expected to be contained within galaxies, in many cases in regions with atypically dense interstellar medium 14 . Simulations of the DM host values corresponding to typical locations within inclination-averaged early-type and dwarf galaxies suggest DM host = 23 pc cm −3 , and DM host = 35 pc cm −3 is likely characteristic of typical locations within face on late-type galaxies 15,16 .…”

mentioning

confidence: 99%

The prevalence of repeating fast radio bursts

Ravi

2019

Nat Astron

121

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Fast radio bursts are extragalactic, sub-millisecond radio impulses of unknown origin 1,2 . Their dispersion measures, which quantify the observed frequency-dependent dispersive delays in terms of free-electron column densities, significantly exceed predictions from models 3 of the Milky Way interstellar medium. The excess dispersions are likely accrued as fast radio bursts propagate through their host galaxies, gaseous galactic halos and the intergalactic medium 4,5 . Despite extensive follow-up observations of the published sample of 72 burst sources 6 , only two are observed to repeat 7,8 , and it is unknown whether or not the remainder are truly one-off events. Here I show that the volumetric occurrence rate of so far non-repeating fast radio bursts likely exceeds the rates of candidate cataclysmic progenitor events, and also likely exceeds the birth rates of candidate compact-object sources. This analysis is based on the high detection rate of bursts with low dispersion measures by the Canadian Hydrogen Intensity Mapping Experiment 9 . Within the existing suite of astrophysical scenarios for fast radio burst progenitors, I conclude that most observed cases originate from sources that emit several bursts over their lifetimes.Thirteen fast radio bursts (FRBs) were published by the Canadian Hydrogen Intensity Mapping Experiment (CHIME) collaboration, including one repeating source (FRB 180814.J0422+73) that I exclude from my analysis 8,9 (see Methods). These events were detected during a pre-commissioning phase when the instrument was not operating with its full sensitivity and field of view. The survey was conducted over less than 7.82×10 −5 sky-years, implying an all-sky FRB rate floor of 300 day −1 in the 400−800 MHz CHIME frequency band. Despite the systematic uncertainties, this is an order of magnitude greater than the rate of bright FRBs detected with the Australian Square Kilometre Array Pathfinder (ASKAP) 10 . Additionally, although the ASKAP FRBs typically have lower excess dispersion measures (DMs) than FRBs detected with the more sensitive Parkes telescope, CHIME has a more than ten times higher detection rate than ASKAP at low excess DMs (Figure 1). This motivated the present analysis of the volumetric occurrence rate of FRBs.The paucity of direct distance measurements for FRBs, based for example on observations of FRB host galaxies, has meant that FRB volumetric-rate estimates have relied on ascribing dominant fractions of the excess DMs to the intergalactic medium (IGM) 1,11 . I define the extragalactic DM, DM X , as the difference between FRB DMs and predictions from models 3 of the Milky Way interstellar medium (DM MW ). If FRB DM X values were entirely built up from a homogeneous IGM comprising all cosmic baryons, the DM X range of the CHIME sample of 79-979 pc cm −3 would correspond to a comoving distance range of 0.34−2.52 Gpc [4]. This assumption, together with a host-galaxy contribution to DM X of 100 pc cm −3 , was previously applied to an early sample of four FRBs from the Parkes telesco...

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confidence: 99%

The prevalence of repeating fast radio bursts

Ravi

2019

Nat Astron

121

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“…Later on, the observation of the host galaxy of FRB 121102 confirmed the extra-Galactic origin of FRBs (Chatterjee et al 2017;Tendulkar et al 2017), which is also the first repeating FRB (Spitler et al 2016). Despite the unclear nature of FRBs, the confirmation of cosmological origin makes FRBs as the cosmological probes, such as constraining the baryon number density (Deng & Zhang 2014;Keane et al 2016;Jaroszynski 2019), measuring cosmic proper distance (Yu & Wang Many models have been proposed to explain the extraordinary features of FRBs (for recent reviews, see Katz 2016a; Platts et al 2019). Among all different models, to explain the repeating FRBs, the neutron star is mostly engaged 1 , such as flares of the magnetars (Popov & Postnov 2010;Kulkarni et al 2014;Lyubarsky 2014;Beloborodov 2017;Metzger et al 2019), similar origin to soft gamma-ray repeaters (Katz 2016b), giant pulses from young pulsars (Lyutikov et al 2016), curvature radiation from the strong magnetic field of neutron stars (Kumar et al 2017), interaction of inspiraling double neutron stars (Wang et al 2016;Zhang 2020), and even may arise the connection of FRBs, gamma-ray bursts and gravitational wave bursts (Zhang 2014(Zhang , 2016.…”

Section: Introductionmentioning

confidence: 99%

Orbit-induced Spin Precession as a Possible Origin for Periodicity in Periodically Repeating Fast Radio Bursts

Yang

Zou

2020

ApJL

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FRB 180916.J0158+65 has been found to repeatedly emit fast radio bursts with the period in roughly 16 days. We propose that such periodicity comes from orbital-induced, spin precession of the emitter, which is possibly a neutron star. Depending on the mass of the companion, the binary period ranges from several hundreds to thousands of seconds. Such tight binaries have a relatively short lifetime, and they are not likely the products of gravitational decay from wide binaries. We comment on the relation to GW190425 and the possibility in LISA and LIGO detections.

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“…fast optical bursts) is likely weak , but it is possible that FRB sources may produce transients in other bands for different progenitor models (see, e.g. Platts et al 2019).…”

Section: Introductionmentioning

confidence: 99%

Fast Radio Bursts as Strong Waves Interacting with the Ambient Medium

Yang

Zhang

2020

ApJL

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Fast radio bursts (FRBs) are mysterious radio transients whose physical origin is still unknown. Within a few astronomical units near an FRB source, the electric field of the electromagnetic wave is so large that the electron oscillation velocity becomes relativistic, which makes the classical Thomson scattering theory and the linear plasma theory invalid. We discuss FRBs as strong waves interacting with the ambient medium, in terms of both electron motion properties and plasma properties. Several novel features are identified. 1. The cross section of Thomson scattering is significantly enhanced for the scattering photons. 2. On the other hand, because of the nonlinear plasma properties in strong waves, the near-source plasma is more transparent and has a smaller effective dispersion measure (DM) contribution to the observed value. For a repeating FRB source, the brighter bursts would have somewhat smaller DMs contributed by the near-source plasma. 3. The radiation beam undergoes relativistic self-focusing in a dense plasma, the degree of self-focusing (or squeezing) depends on the plasma density. Such a squeezing effect would affect the collimation angle and the true event rate of FRBs. 4. When an FRB propagates in a nearby ambient plasma, a wakefield wave in the plasma will be generated by the ponderomotive force of the FRB and accelerates electrons in the ambient medium. However, such an effect is too weak to be observationally interesting.

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A living theory catalogue for fast radio bursts

Cited by 421 publications

References 293 publications

The prevalence of repeating fast radio bursts

The prevalence of repeating fast radio bursts

Orbit-induced Spin Precession as a Possible Origin for Periodicity in Periodically Repeating Fast Radio Bursts

Fast Radio Bursts as Strong Waves Interacting with the Ambient Medium

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