FRB 20250316A has no persistent radio counterpart down to 8.4 microJy at 15 GHz, ruling out luminous nebulae and favoring low-density, weakly magnetized environments for this one-off burst.
(GHz) ( µJy beam−1) 2025-04-04 D 3.2 13.6 CHIME/FRB Collaboration et al
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A Deep VLA Search for a Persistent Radio Counterpart to the One-off FRB 20250316A
FRB 20250316A has no persistent radio counterpart down to 8.4 microJy at 15 GHz, ruling out luminous nebulae and favoring low-density, weakly magnetized environments for this one-off burst.