A nebular origin for the persistent radio emission of fast radio bursts

Gabriele Bruni (), Luigi Piro, Yuan-Pei Yang, Salvatore Quai, Bing Zhang, Eliana Palazzi, Luciano Nicastro, Chiara Feruglio, Roberta Tripodi, Brendan O’Connor, Angela Gardini, Sandra Savaglio, Andrea Rossi, Ana M. Nicuesa Guelbenzu and Rosita Paladino
Additional contact information
Gabriele Bruni: INAF (Istituto Nazionale di Astrofisica)
Luigi Piro: INAF (Istituto Nazionale di Astrofisica)
Yuan-Pei Yang: Yunnan University
Salvatore Quai: Università degli Studi di Bologna (UNIBO)
Bing Zhang: University of Nevada
Eliana Palazzi: INAF (Istituto Nazionale di Astrofisica)
Luciano Nicastro: INAF (Istituto Nazionale di Astrofisica)
Chiara Feruglio: INAF (Istituto Nazionale di Astrofisica)
Roberta Tripodi: INAF (Istituto Nazionale di Astrofisica)
Brendan O’Connor: Carnegie Mellon University
Angela Gardini: CSIC (Consejo Superior de Investigaciones Científicas)
Sandra Savaglio: INAF (Istituto Nazionale di Astrofisica)
Andrea Rossi: INAF (Istituto Nazionale di Astrofisica)
Ana M. Nicuesa Guelbenzu: Thüringer Landessternwarte Tautenburg
Rosita Paladino: INAF (Istituto Nazionale di Astrofisica)

Nature, 2024, vol. 632, issue 8027, 1014-1016

Abstract: Abstract Fast radio bursts (FRBs) are millisecond-duration, bright (approximately Jy) extragalactic bursts, whose production mechanism is still unclear1. Recently, two repeating FRBs were found to have a physically associated persistent radio source of non-thermal origin2,3. These two FRBs have unusually large Faraday rotation measure values2,3, probably tracing a dense magneto-ionic medium, consistent with synchrotron radiation originating from a nebula surrounding the FRB source4–8. Recent theoretical arguments predict that, if the observed Faraday rotation measure mostly arises from the persistent radio source region, there should be a simple relation between the persistent radio source luminosity and the rotation measure itself7,9. Here we report the detection of a third, less luminous persistent radio source associated with the repeating FRB source FRB 20201124A at a distance of 413 Mpc, substantially expanding the predicted relation into the low luminosity–low Faraday rotation measure regime (

Date: 2024
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DOI: 10.1038/s41586-024-07782-6

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