Preprint
Oct 2026
NOCTURNE. VI. Hour-timescale radio variability in early-stage active galactic nucleus SDSS J122844.81+501751.2
Recently, a sample of radio-weak active galactic nuclei (AGN) was discovered to exhibit extreme Jy-level radio flares at 37~GHz. The origin of these extraordinary flares remains unknown. All sources host low-mass supermassive black holes, and most of them can be classified as narrow-line Seyfert 1 galaxies. We employed...
E. Järvelä, P. Romano, J. Nättilä et al.
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