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Preprint Oct 2026

A spatially resolved view of Fast Radio Burst host metallicities with Integral-field Spectroscopy

Magnetar sources are the leading theory for Fast Radio Burst (FRB) progenitors. If magnetars are indeed the dominant sources, we may thus expect any metallicity preference for magnetar formation to be reflected in the FRB site in host galaxies. Here, we leverage Integral Field Unit (IFU) spectroscopy to spatially resol...

S. Simha, Hsiao-Wen Chen, W. Fong et al. · 0 citations
Preprint Aug 2026

High Dispersion Measure Fast Radio Bursts from Young, Dust-Poor H II Regions

Several repeating fast radio burst (FRB) sources exhibit host-frame dispersion measure (DM) excesses far exceeding those expected from the interstellar medium in their host galaxies, implying a substantial contribution from the sub-kiloparsec-scale local environment. These excesses are often attributed to an expanding...

E. C. Diggins, C. Leung, Wenbin Lu UC Berkeley Department of Astronomy et al. · 0 citations

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