2020MNRAS.497..352A


C.D.S. - SIMBAD4 rel 1.7 - 2021.04.19CEST14:25:53

2020MNRAS.497..352A - Mon. Not. R. Astron. Soc., 497, 352-360 (2020/September-1)

Initial results from a real-time FRB search with the GBT.

AGARWAL D., LORIMER D.R., SURNIS M.P., PEI X., KARASTERGIOU A., GOLPAYEGANI G., WERTHIMER D., COBB J., McLAUGHLIN M.A., WHITE S., ARMOUR W., MacMAHON D.H.E., SIEMION A.P.V. and FOSTER G.

Abstract (from CDS):

We present the data analysis pipeline, commissioning observations, and initial results from the GREENBURST fast radio burst (FRB) detection system on the Robert C. Byrd Green Bank Telescope (GBT) previously described by Surnis et al., which uses the 21-cm receiver observing commensally with other projects. The pipeline makes use of a state-of-the-art deep learning classifier to winnow down the very large number of false-positive single-pulse candidates that mostly result from radio frequency interference. In our observations, totalling 156.5 d so far, we have detected individual pulses from 20 known radio pulsars that provide an excellent verification of the system performance. We also demonstrate, through blind injection analyses, that our pipeline is complete down to a signal-to-noise threshold of 12. Depending on the observing mode, this translates into peak flux sensitivities in the range 0.14-0.89 Jy. Although no FRBs have been detected to date, we have used our results to update the analysis of Lawrence et al. to constrain the FRB all-sky rate to be 1150+200–180 per day above a peak flux density of 1 Jy. We also constrain the source count index α = 0.84 ± 0.06, which indicates that the source count distribution is substantially flatter than expected from a Euclidean distribution of standard candles (where α = 1.5). We discuss this result in the context of the FRB redshift and luminosity distributions. Finally, we make predictions for detection rates with GREENBURST, as well as other ongoing and planned FRB experiments.

Abstract Copyright: © 2020 The Author(s) Published by Oxford University Press on behalf of the Royal Astronomical Society

Journal keyword(s): surveys - pulsars: general

Simbad objects: 26

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Number of rows : 26

N Identifier Otype ICRS (J2000)
RA
ICRS (J2000)
DEC
Mag U Mag B Mag V Mag R Mag I Sp type #ref
1850 - 2021
#notes
1 FRB 110214 rB 01 21 17.0 -49 47 11           ~ 15 0
2 NAME FRB 180916.J0158+65 Rad 01 58 00.75017 +65 43 00.3152           ~ 105 0
3 PSR B0329+54 Psr 03 32 59.3462817079 +54 34 45.047901390           ~ 588 1
4 PSR J0426+4933 Psr 04 26 06.813 +49 33 38.46           ~ 5 0
5 PSR B0450-18 Psr 04 52 34.1150 -17 59 23.300           ~ 172 0
6 FRB 010305 rB 04 57 19.5000 -52 36 24.668           ~ 2 0
7 FRB 010312 rB 05 26 54.90 -64 56 19.2           ~ 11 0
8 FRB 121102 rB 05 32 09.60 +33 05 13.4           ~ 419 0
9 PSR B0818-13 Psr 08 20 26.4020 -13 50 56.400           ~ 187 0
10 PSR B0919+06 Psr 09 22 14.1600 +06 38 28.800           ~ 255 0
11 PSR B1508+55 Psr 15 09 25.7 +55 31 33           ~ 275 1
12 PSR B1702-19 Psr 17 05 35.9670 -19 06 39.600           ~ 147 0
13 PSR B1718-35 Psr 17 21 32.778 -35 32 49.60           ~ 63 0
14 PSR B1745-20A Psr 17 48 52.689 -20 21 39.70     10.55     ~ 41 1
15 PSR B1804-08 Psr 18 07 38.0266 -08 47 43.250           ~ 111 0
16 PSR B1822-09 Psr 18 25 30.5940 -09 35 21.200           ~ 313 0
17 PSR B1933+16 Psr 19 35 47.7012077756 +16 16 40.025845719           ~ 277 1
18 PSR B1937+21 Psr 19 39 39.6 +21 37 22           ~ 981 2
19 PSR B1946+35 Psr 19 48 25.0067 +35 40 11.057           ~ 157 0
20 PSR B2021+51 Psr 20 22 49.8730 +51 54 50.233           ~ 245 1
21 PSR J2037+3621 Psr 20 37 27.44 +36 21 24.1           ~ 40 0
22 PSR B2111+46 Psr 21 13 24.2 +46 44 09           ~ 190 1
23 PSR B2154+40 Psr 21 57 01.840 +40 17 45.89           ~ 136 0
24 FRB 171019 rB 22 17.5 -08 40           ~ 31 0
25 PSR B2217+47 Psr 22 19 48.139 +47 54 53.93           ~ 206 0
26 PSR B2310+42 Psr 23 13 08.5976 +42 53 12.987           ~ 124 0

    Equat.    Gal    SGal    Ecl

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2021.04.19-14:25:53

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