Five new fast radio bursts from the HTRU high-latitude survey at Parkes: First evidence for two-component bursts

By David J. Champion, E. Petroff, Michael Kramer, M. Keith, M. Bailes, E. Barr, S. Bates, N. Bhat, M. Burgay, S. Burke-Spolaor and 11 more. 2015

241 citations recorded by the source corpus.

The detection of five new fast radio bursts (FRBs) found in the 1.4-GHz High Time Resolution Universe high-latitude survey at Parkes, is presented. The rate implied is 7(-3)(+5) x 10(3) (95 per cent) FRBs sky(-1) d(-1) above a fluence of 0.13 Jy ms for an FRB of 0.128 ms duration to 1.5 Jy ms for 16 ms duration. One of these FRBs has a two-component profile, in which each component is similar to the known population of single component FRBs and the two components are separated by 2.4 +/- 0.4 ms. All the FRB components appear to be unresolved following deconvolution with a scattering tail and accounting for intrachannel smearing. The two-component burst, FRB 121002, also has the highest dispersion measure (1629 pc cm(-3)) of any FRB to-date. Many of the proposed models to explain FRBs use a single high-energy event involving compact objects (such as neutron-star mergers) and therefore cannot easily explain a two-component FRB. Models that are based on extreme versions of flaring, pulsing, or orbital events, however, could produce multiple component profiles. The compatibility of these models and the FRB rate implied by these detections is discussed.

Subfields: Astronomy and Astrophysics, Oceanography

View Paper: https://www.semanticscholar.org/paper/8970cefa437cb0766237ddcc71c250bd9c79acdf

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Citations in the corpus

A Concordance Picture of FRB 121102 as a Flaring Magnetar Embedded in a Magnetized Ion–Electron Wind Nebula (2018, background): “…emission lasting less than a few milliseconds (Lorimer et al. 2007; Keane et al. 2012; Thornton et al. 2013; Spitler et al. 2014; Ravi et al. 2015; Champion et al. 2016; Petroff et al. 2016; Lawrence et al. 2017) with large dispersion measures (DMs; DM ≈300–2000 pc cm−3), well above the…”
A “Cosmic Comb” Model of Fast Radio Bursts (2017, background): “The origin of fast radio bursts (FRBs) remains a mystery after one decade of observations (Lorimer et al. 2007; Thornton et al. 2013; Petroff et al. 2015a; Champion et al. 2016; Masui et al. 2015; Keane et al. 2016; Spitler et al. 2016; DeLaunay et al. 2016; Chatterjee et al. 2017).”
Fast Radio Bursts from Magnetars Born in Binary Neutron Star Mergers and Accretion Induced Collapse (2019, background): “…thus implicating an extragalactic origin (e.g., Lorimer et al. 2007; Keane et al. 2012; Thornton et al. 2013; Spitler et al. 2014; Ravi et al. 2015; Champion et al. 2016; Petroff et al. 2016; Lawrence et al. 2017; Shannon et al. 2018; see Cordes & Chatterjee 2019; Petroff et al. 2019 for recent…”
A NEW ELECTRON-DENSITY MODEL FOR ESTIMATION OF PULSAR AND FRB DISTANCES (2016, background): “FRB130729 stands out with the observed scattering timescale (Champion et al. 2016) much larger than is predicted by the model.”
A Multi-telescope Campaign on FRB 121102: Implications for the FRB Population (2017, background): “The distance inferred from the largest DMs observed (∼ 1500 pc cm−3; Champion et al. 2016) is somewhat higher, but that likely overestimates distance since DM is expected to have significant contributions from the host galaxy and intervening galaxies (Tendulkar et al. 2017; McQuinn 2014).”
Fast radio burst source properties and curvature radiation model (2017, background): “Also, FRB 121002 showed resolved double-peaked profile with separation of about 2.4 ms between the peaks (Champion et al. 2016).”
Fast Radio Burst Morphology in the First CHIME/FRB Catalog (2021, methodology): “In Catalog 1, we analyze the intensity data of the beam in which each FRB was detected with the highest S/N. 19 For example, no dynamic spectrum was presented with the first evidence of a multicomponent burst (Champion et al. 2016); but see Ravi (2019).”
Millisecond Magnetar Birth Connects FRB 121102 to Superluminous Supernovae and Long-duration Gamma-Ray Bursts (2017, background): “…less and dispersion measures DM ∼ 500 − 1200 pc cm−3 much larger than expected for propagation through the Galaxy or its halo (Lorimer et al. 2007; Keane et al. 2012; Thornton et al. 2013; Spitler et al. 2014; Ravi et al. 2015; Petroff et al. 2016; Champion et al. 2016; see Katz 2016 for a review).”
Fast radio bursts as synchrotron maser emission from decelerating relativistic blast waves (2019, background): “…a few milliseconds and large dispersion measures (DM), indicating an extragalactic origin (Lorimer et al. 2007; Keane et al. 2012; Thornton et al. 2013; Spitler et al. 2014; Ravi et al. 2015; Champion et al. 2016; Petroff et al. 2016; Lawrence et al. 2017; Shannon et al. 2018; James et al. 2018).”
The SUrvey for Pulsars and Extragalactic Radio Bursts – II. New FRB discoveries and their follow-up. (2017, methodology): “…(Lorimer et al. 2007; Keane et al. 2012; Thornton et al. 2013; Burke-Spolaor & Bannister 2014; Spitler et al. 2014; Masui et al. 2015; Petroff et al. 2015a, 2017; Ravi, Shannon & Jameson 2015; Champion et al. 2016; Keane et al. 2016; Ravi et al. 2016; Caleb et al. 2017; Bannister et al. 2017).”
The Detection of an Extremely Bright Fast Radio Burst in a Phased Array Feed Survey (2017, background): “…Wayth et al. 2011; Caleb et al. 2016; Spitler et al. 2016; Masui et al. 2015; Chatterjee et al. 2017) and an estimated rate of ∼ 3000 events sky−1 day−1 above a fluence of 2 Jy ms (Keane & Petroff 2015; Champion et al. 2016), fewer than thirty such bursts are still known1 (Petroff et al. 2016).”