CHIME FRB: An application of FFT beamforming for a radio telescope

Ng, Cherry; Vanderlinde, K.; Paradise, Adiv; Klages, Peter; Masui, Kiyoshi; Smith, Kendrick M.; Bandura, Kevin; Boyle, Patrick Joseph; Dobbs, M.; Kaspi, V. M.; Rénard, A.; Shaw, J. Richard; Stairs, I. H.; Tretyakov, Ian

doi:10.23919/ursigass.2017.8105318

Cited by 21 publications

(15 citation statements)

References 14 publications

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“…Avoiding the effects of scattering may again provide a boost in S/N because of shorter pulse durations, and may indeed provide sensitivity to a population of FRBs that are too broad to be detected in the L-band. Conversely, the effects of scattering must be taken into account in predicting FRB detection rates for lower-frequency experiments such as the Canadian Hydrogen Intensity Mapping Experiment (CHME; e.g., Ng et al 2017) and the Hydrogen Intensity and Real-time Analysis Experiment (HIRAX; Newburgh et al 2016).…”

Section: Concluding Discussionmentioning

confidence: 99%

The observed properties of fast radio bursts

Ravi

2018

Monthly Notices of the Royal Astronomical Society

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I present an empirical study of the properties of fast radio bursts (FRBs): Gigahertz-frequency, dispersed pulses of extragalactic origin. I focus my investigation on the sample of seventeen FRBs detected at the Parkes radio telescope with largely self-consistent instrumentation. Of this sample, six are temporally unresolved, eight exhibit evidence for scattering in inhomogeneous plasma, and five display potentially intrinsic temporal structure. The characteristic scattering timescales at a frequency of 1 GHz range between 0.005 ms and 32 ms; moderate evidence exists for a relation between FRB scattering timescales and dispersion measures. Additionally, I present constraints on the fluences of Parkes FRBs, accounting for their uncertain skypositions, and use the multiple-beam detection of FRB 010724 (the Lorimer burst) to measure its fluence to be 800 ± 400 Jy ms. FRBs, including the repeating FRB 121102, appear to manifest with a plethora of characteristics, and it is uncertain at present whether they share a common class of progenitor object, or arise from a selection of independent progenitors.

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Section: Concluding Discussionmentioning

confidence: 99%

The observed properties of fast radio bursts

Ravi

2018

Monthly Notices of the Royal Astronomical Society

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“…It consists of four cylindrical reflecting surfaces without moving parts which provides an instantaneous field of view of ∼ 200 deg 2 . More than 1000 new FRBs have been detected with its hybrid beamforming pipeline (Ng et al, 2017).…”

Section: Recent Interferometric Frb/pulsar Searchesmentioning

confidence: 99%

Wide field beamformed observation with MeerKAT

Chen,

Barr,

Karuppusamy

et al. 2021

Preprint

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Large scale beamforming with radio interferometers has the potential to revolutionize the science done with pulsars and fast radio bursts by improving the survey efficiency for these sources. We describe a wide field beamformer for the MeerKAT radio telescope and outline strategies to optimally design such surveys. We show initial results using the beamformer by observing a globular cluster to track several pulsars simultaneously and demonstrate the source localization capability of this observation.

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“…The telescope is composed of four 20 m by 100 m dishes aligned in the the N/S direction. A linear array of 256 dual-polarization antennas monitor a FOV of 120 • in the North/South direction and 1.3 − 2.5 • in the East/West (due to the significant frequency and declination dependence) [20]. This combined with CHIME's geographic position means that the FRB detection instrument will monitor the entire Northern sky every day (above a declination of 11 • ).…”

Section: Instrumentationmentioning

confidence: 99%

Gamma-ray and Optical Observations of Repeating Fast Radio Bursts with VERITAS

Lundy¹

2021

Proceedings of 37th International Cosmic Ray Conference — PoS(ICRC2021)

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Fast radio burst (FRBs) are an exciting class of bright, extragalactic, millisecond radio transients. The recent development of large field-of-view (FOV) radio telescopes has caused a rapid rise in the number of identified single burst and repeating FRBs. This has allowed for the extensive multiwavelength follow-up to search for the potential counterparts predicted by theoretical models. New observations of similar radio transients in Galactic magnetars like SGR 1935+2154 have continued to motivate the search for rapid optical and very-high-energy (VHE, >100 GeV) counterparts. Since 2016 VERITAS has engaged in an FRB observing campaign to search for the prompt optical, and VHE emission from multiple repeating FRBs. We present these new results from VERITAS observations of five repeating sources including data taken simultaneously with bursts observed by the CHIME radio telescope.

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CHIME FRB: An application of FFT beamforming for a radio telescope

Cited by 21 publications

References 14 publications

The observed properties of fast radio bursts

The observed properties of fast radio bursts

Wide field beamformed observation with MeerKAT

Gamma-ray and Optical Observations of Repeating Fast Radio Bursts with VERITAS

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