The Fluence and Distance Distributions of Fast Radio Bursts

Vedantham, H. K.; Ravi, Vikram; Hallinan, Gregg; Shannon, R. M.

doi:10.3847/0004-637x/830/2/75

Cited by 49 publications

(87 citation statements)

References 28 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…I note that since the radio telescope beam is not uniform and the observed cumulative flux density function of sources (so called log(N)-log(S)) is some power-law (−3/2 for Euclidean Universe; see however Vedantham et al 2016), this may affect the effective beam size of the survey (used in the rate calculation). Assuming a cumulative flux density powerlaw of −3/2 and assuming a Gaussian beam with a size equal to the beam full-width half maximum, the correction factor is 1 (see appendix C in .…”

Section: Source Variability I Cross-matched the Sources Inmentioning

confidence: 99%

A Search for FRB 121102-like Persistent Radio-luminous Sources—Candidates and Implications for the FRB Rate and Searches

Ofek

2017

ApJ

View full text Add to dashboard Cite

The localization of the repeating fast radio burst (FRB), FRB 121102, suggests that it is associated with a persistent radio-luminous compact source in the FRB host galaxy. Using the FIRST radio catalog, I present a search for luminous persistent sources in nearby galaxies, with radio luminosities > 10% of the FRB 121102 persistent source luminosity. The galaxy sample contains about 30% of the total galaxy g-band luminosity within < 108 Mpc, in a footprint of 10,600 deg 2 . After rejecting sources likely due to active galactic nuclei activity or background sources, I remain with 11 candidates that are presumably associated with galactic disks or star formation regions. At least some of these candidates are likely to be due to chance alignment. In addition, I find 85 sources within 1 ′′ of galactic nuclei. Assuming the radio persistent sources are not related to galactic nuclei and that they follow the galaxy g-band light, the 11 sources imply a 95% confidence upper limit on the space density of luminous persistent sources of < ∼ 5 × 10 −5 Mpc −3 , and that at any given time only a small fraction of galaxies host a radio luminous persistent source ( < ∼ 10 −3 L −1 * ). Assuming persistent sources life time of 100 yr, this implies a birth rate of < ∼ 5 × 10 −7 yr −1 Mpc −3 . Given the FRB volumetric rate, and assuming that all FRBs repeat and are associated with persistent radio sources, this sets a lower limit on the rate of FRB events per persistent source of > ∼ 0.8 yr −1 . I argue that these 11 candidates are good targets for FRB searches and I estimate the FRB event rate from these candidates.

show abstract

Section: Source Variability I Cross-matched the Sources Inmentioning

confidence: 99%

A Search for FRB 121102-like Persistent Radio-luminous Sources—Candidates and Implications for the FRB Rate and Searches

Ofek

2017

ApJ

View full text Add to dashboard Cite

show abstract

“…Any value other than 1.5 would argue for FRBs being a cosmological population and/or exhibiting redshift-dependent evolution. Vedantham et al (2016a) calculate γ based on multiple-beam detections with Parkes and different detection rates for varying dish diameters, and they report a constraint, 0.66<γ<0.96. Oppermann et al (2016) derive the constraint 0.8γ1.7 making use of the detections with the HTRU survey at Parkes and the PALFA Survey at Arecibo.…”

Section: Spectral Index Constraintsmentioning

confidence: 99%

A Search for Fast Radio Bursts with the GBNCC Pulsar Survey

Chawla

Kaspi

Josephy

et al. 2017

ApJ

View full text Add to dashboard Cite

We report on a search for fast radio bursts (FRBs) with the Green Bank Northern Celestial Cap (GBNCC) Pulsar Survey at 350 MHz. Pointings amounting to a total on-sky time of 61 days were searched to a dispersion measure (DM) of 3000 pc cm −3 , while the rest (23 days; 29% of the total time) were searched to a DM of 500 pc cm −3 . No FRBs were detected in the pointings observed through 2016 May. We estimate a 95% confidence upper limit on the FRB rate of 3.6 10 3FRBs sky −1 day −1 above a peak flux density of 0.63 Jy at 350 MHz for an intrinsic pulse width of 5 ms. We place constraints on the spectral index α by running simulations for different astrophysical scenarios and cumulative flux density distributions. The nondetection with GBNCC is consistent with the 1.4 GHz rate reported for the Parkes surveys for α>+0.35 in the absence of scattering and free-free absorption and α>−0.3 in the presence of scattering, for a Euclidean flux distribution. The constraints imply that FRBs exhibit either a flat spectrum or a spectral turnover at frequencies above 400 MHz. These constraints also allow estimation of the number of bursts that can be detected with current and upcoming surveys. We predict that CHIME may detect anywhere from several to ∼50 FRBs per day (depending on model assumptions), making it well suited for interesting constraints on spectral index, the log N-log S slope, and pulse profile evolution across its bandwidth (400-800 MHz).

show abstract

“…We finally assessed how much survey I and II constrain the FRB statistical properties. We assumed that the probability density function P of observing M events follows a Poissonian distribution (Vedantham et al 2016;Amiri et al 2017):…”

Section: Frb Survey Designmentioning

confidence: 99%

The Northern Cross fast radio burst project – I. Overview and pilot observations at 408 MHz

Locatelli

Bernardi

Bianchi

et al. 2020

Monthly Notices of the Royal Astronomical Society

View full text Add to dashboard Cite

Fast radio bursts remain one of the most enigmatic astrophysical sources. Observations have significantly progressed over the last few years, thanks to the capabilities of new radio telescopes and the refurbishment of existing ones. Here we describe the upgrade of the Northern Cross radio telescope, operating in the 400-416 MHz frequency band, with the ultimate goal of turning the array into a dedicated instrument to survey the sky for fast radio bursts. We present test observations of the pulsar B0329+54 to characterize the system performance and forecast detectability. Observations with the system currently in place are still limited by modest sky coverage (∼ 9.4 deg 2 ) and biased by smearing of high dispersion measure events within each frequency channels. In its final, upgraded configuration, however, the telescope will be able to carry out unbiased fast radio burst surveys over a ∼ 350 deg 2 instantaneous field of view up to z ∼ 5, with a (nearly constant) ∼ 760 (τ/ms) −0.5 mJy rms sensitivity.

show abstract

The Fluence and Distance Distributions of Fast Radio Bursts

Cited by 49 publications

References 28 publications

A Search for FRB 121102-like Persistent Radio-luminous Sources—Candidates and Implications for the FRB Rate and Searches

A Search for FRB 121102-like Persistent Radio-luminous Sources—Candidates and Implications for the FRB Rate and Searches

A Search for Fast Radio Bursts with the GBNCC Pulsar Survey

The Northern Cross fast radio burst project – I. Overview and pilot observations at 408 MHz

Contact Info

Product

Resources

About