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A Bright Fast Radio Burst from FRB 20200120E with Sub-100-Nanosecond Structure

Majid, Walid A. and Pearlman, Aaron B. and Prince, Thomas A. and Wharton, Robert S. and Naudet, Charles J. and Bansal, Karishma and Bhardwaj, Mohit and Cassanelli, Tomas and Leung, Calvin and Meyers, Bradley W. and Petroff, Emily and Stairs, Ingrid H. and Tendulkar, Shriharsh P. (2021) A Bright Fast Radio Burst from FRB 20200120E with Sub-100-Nanosecond Structure. . (Unpublished)

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We present the detection of a bright radio burst at radio frequencies between 2.2--2.3 GHz with the NASA Deep Space Network (DSN) 70 m dish (DSS-63) in Madrid, Spain from FRB~20200120E. This repeating fast radio burst (FRB) was recently discovered by the Canadian Hydrogen Intensity Mapping Experiment Fast Radio Burst (CHIME/FRB) instrument and reported to be associated with the M81 spiral galaxy at a distance of 3.6 Mpc. The high time resolution capabilities of the recording system used in this observation, together with the small amount of scattering and intrinsic brightness of the burst, allow us to explore the burst structure in unprecedented detail. We find that the burst has a duration of roughly 30 μs and is comprised of several narrow components with typical separations of 2--3 μs. The narrowest component has a width of ≲ 100 ns, which corresponds to a light travel time size as small as 30 m, the smallest associated with an FRB to date. The peak flux density of the narrowest burst component is 270 Jy. We estimate the total spectral luminosity of the narrowest component of the burst to be 4 × 10³⁰ erg s⁻¹ Hz⁻¹, which is a factor of ∼500 above the luminosities of the so-called "nanoshots" associated with giant pulses from the Crab pulsar. This spectral luminosity is also higher than that of the radio bursts detected from the Galactic magnetar SGR 1935+2154 during its outburst in April 2020, but it falls on the low-end of the currently measured luminosity distribution of extragalatic FRBs. These results provide further support for the presence of a continuum of FRB burst luminosities.

Item Type:Report or Paper (Discussion Paper)
Related URLs:
URLURL TypeDescription Paper
Majid, Walid A.0000-0002-4694-4221
Pearlman, Aaron B.0000-0002-8912-0732
Prince, Thomas A.0000-0002-8850-3627
Wharton, Robert S.0000-0002-7416-5209
Naudet, Charles J.0000-0001-6898-0533
Bansal, Karishma0000-0002-7418-7862
Bhardwaj, Mohit0000-0002-3615-3514
Cassanelli, Tomas0000-0003-2047-5276
Leung, Calvin0000-0002-4209-7408
Meyers, Bradley W.0000-0001-8845-1225
Petroff, Emily0000-0002-9822-8008
Stairs, Ingrid H.0000-0001-9784-8670
Tendulkar, Shriharsh P.0000-0003-2548-2926
Additional Information:We thank Paz Beniamini for informative discussions during the preparation of this paper. A.B.P is a McGill Space Institute (MSI) Fellow and a Fonds de Recherche du Quebec – Nature et Technologies (FRQNT) postdoctoral fellow. R.S.W. is supported by an appointment to the NASA Postdoctoral Program at the Jet Propulsion Laboratory, administered by Universities Space Research Association under contract with NASA. M.B. is supported by an FRQNT Doctoral Research Award. C.L. was supported by the U.S. Department of Defense (DoD) through the National Defense Science and Engineering Graduate Fellowship (NDSEG) Program. E.P. acknowledges funding from an NWO Veni Fellowship. We thank the Jet Propulsion Laboratory’s and California Institute of Technology’s President’s and Director’s Research and Development Fund for supporting this work. We also thank Dr. Charles Lawrence and Dr. Stephen Lichten for providing programmatic support. In addition, we are grateful to the DSN scheduling team (Hernan Diaz, George Martinez, Carleen Ward), the Madrid Deep Space Communication Complex (MDSCC) staff for scheduling and carrying out these observations, and Steven Olson for his help in flux calibration of the data. A portion of this research was performed at the Jet Propulsion Laboratory, California Institute of Technology and the Caltech campus, under a Research and Technology Development Grant through a contract with the National Aeronautics and Space Administration. U.S. government sponsorship is acknowledged. FRB research at UBC is supported by an NSERC Discovery Grant and by the Canadian Institute for Advanced Research.
Group:Astronomy Department
Funding AgencyGrant Number
McGill Space InstituteUNSPECIFIED
Fonds de recherche du Québec - Nature et technologies (FRQNT)UNSPECIFIED
NASA Postdoctoral ProgramUNSPECIFIED
National Defense Science and Engineering Graduate (NDSEG) FellowshipUNSPECIFIED
Nederlandse Organisatie voor Wetenschappelijk Onderzoek (NWO)UNSPECIFIED
JPL President and Director's FundUNSPECIFIED
Natural Sciences and Engineering Research Council of Canada (NSERC)UNSPECIFIED
Canadian Institute for Advanced Research (CIFAR)UNSPECIFIED
Subject Keywords:fast radio burst: individual (FRB 20200120E)
Record Number:CaltechAUTHORS:20210603-122516654
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Usage Policy:No commercial reproduction, distribution, display or performance rights in this work are provided.
ID Code:109365
Deposited By: George Porter
Deposited On:03 Jun 2021 23:24
Last Modified:03 Jun 2021 23:24

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