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arXiv · 2208.00803

Limits on Fast Radio Burst-like Counterparts to Gamma-ray Bursts using CHIME/FRB

Alice P. Curtin·Shriharsh P. Tendulkar·Alexander Josephy·Pragya Chawla·Bridget Andersen·Victoria M. Kaspi·Mohit Bhardwaj·Tomas Cassanelli·Amanda Cook·Fengqiu Adam Dong·Emmanuel Fonseca·B. M. Gaensler·Jane F. Kaczmarek·Adam E. Lanmnan·Calvin Leung·Aaron B. Pearlman·Emily Petroff·Ziggy Pleunis·Masoud Rafiei-Ravandi·Scott M. Ransom·Kaitlyn Shin·Paul Scholz·Kendrick Smith·Ingrid Stairs
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Abstract

Fast Radio Bursts (FRBs) are a class of highly energetic, mostly extragalactic radio transients lasting for a few milliseconds. While over 600 FRBs have been published so far, their origins are presently unclear, with some theories for extragalactic FRBs predicting accompanying high-energy emission. In this work, we use the Canadian Hydrogen Intensity Mapping Experiment (CHIME) Fast Radio Burst (CHIME/FRB) Project to explore whether any FRB-like radio emission coincides in space and time with 81 gamma-ray bursts (GRBs) detected between 2018 July 17 and 2019 July 8 by Swift/BAT and Fermi/GBM. We do not find any statistically significant, coincident pairs within 3sigma of each other's spatial localization regions and within a time difference of up to one week. In addition to searching for spatial matches between known FRBs and known GRBs, we use CHIME/FRB to constrain FRB-like radio emission before, at the time of, or after the reported high-energy emission at the position of 39 GRBs. Our most constraining radio flux limits in the 400- to 800-MHz band for short gamma-ray bursts (SGRBs) are <50 Jy at 18.6 ks pre-high-energy emission, and <5 Jy at 28.4 ks post-high-energy emission, assuming a 10-ms radio burst width with each limit valid for 60 seconds. We use these limits to constrain models that predict FRB-like prompt radio emission before and after SGRBs. We also place limits as low as 2 Jy for long gamma-ray bursts (LGRBs), but there are no strong theoretical predictions for coincident FRB-like radio emission for LGRBs.

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Alice P. Curtin, Shriharsh P. Tendulkar, Alexander Josephy, Pragya Chawla, Bridget Andersen, Victoria M. Kaspi, Mohit Bhardwaj, Tomas Cassanelli, Amanda Cook, Fengqiu Adam Dong, Emmanuel Fonseca, B. M. Gaensler, Jane F. Kaczmarek, Adam E. Lanmnan, Calvin Leung, Aaron B. Pearlman, Emily Petroff, Ziggy Pleunis, Masoud Rafiei-Ravandi, Scott M. Ransom, Kaitlyn Shin, Paul Scholz, Kendrick Smith, Ingrid Stairs. 2022-08-01. Limits on Fast Radio Burst-like Counterparts to Gamma-ray Bursts using CHIME/FRB. https://doi.org/10.3847/1538-4357%2Face52f

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