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The multiwavelength counterparts of fast radio bursts

Chen, Ge and Ravi, Vikram and Lu, Wenbin (2020) The multiwavelength counterparts of fast radio bursts. Astrophysical Journal, 897 (2). Art. No. 146. ISSN 1538-4357. doi:10.3847/1538-4357/ab982b.

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The engines that produce extragalactic fast radio bursts (FRBs), and the mechanism by which the emission is generated, remain unknown. Many FRB models predict prompt multiwavelength counterparts, which can be used to refine our knowledge of these fundamentals of the FRB phenomenon. However, several previous targeted searches for prompt FRB counterparts have yielded no detections and have additionally not reached sufficient sensitivity with respect to the predictions. In this work, we demonstrate a technique to estimate the ratio, η, between the energy outputs of FRB counterparts at various wavelengths and the radio-wavelength emission. Our technique combines the fluence distribution of the FRB population with results from several wide-field blind surveys for fast transients from the optical to the TeV bands. We present constraints on η that improve upon previous observations even in the case where all unclassified transient events in existing surveys are FRB counterparts. In some scenarios for the FRB engine and emission mechanism, we find that FRB counterparts should have already been detected, thus demonstrating that our technique can successfully test predictions for η. However, it is possible that FRB counterparts are lurking among catalogs of unclassified transient events. Although our technique is robust to the present uncertainty in the FRB fluence distribution, its ultimate application to accurately estimate or bound η will require the careful analysis of all candidate fast transient events in multiwavelength survey data sets.

Item Type:Article
Related URLs:
URLURL TypeDescription Paper
Chen, Ge0000-0003-2867-4544
Ravi, Vikram0000-0002-7252-5485
Lu, Wenbin0000-0002-1568-7461
Additional Information:© 2020 The American Astronomical Society. Received 2020 April 22; revised 2020 May 28; accepted 2020 May 30; published 2020 July 13. We thank Sterl Phinney and Casey Law for useful discussions. This material is based upon work supported by the National Science Foundation under grant No. AST-1836018. W.L. is supported by the David and Ellen Lee Fellowship at Caltech.
Group:Astronomy Department
Funding AgencyGrant Number
David and Ellen Lee Postdoctoral ScholarshipUNSPECIFIED
Subject Keywords:Radio bursts; Radio transient sources; Neutron stars
Issue or Number:2
Classification Code:Unified Astronomy Thesaurus concepts: Radio bursts (1339); Radio transient sources (2008); Neutron stars (1108)
Record Number:CaltechAUTHORS:20200604-151441136
Persistent URL:
Official Citation:Ge Chen et al 2020 ApJ 897 146
Usage Policy:No commercial reproduction, distribution, display or performance rights in this work are provided.
ID Code:103711
Deposited By: George Porter
Deposited On:05 Jun 2020 14:35
Last Modified:16 Nov 2021 18:24

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