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active galactic nuclei 1cataclysmic variables 1high-redshift quasars 1optical variability 1period bouncers 1spectral analysis 1spectroscopy 1stellar evolution 1time-domain astronomy 1x-ray surveys 1

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most citedEuclid: Photometric redshift calibration with the clustering redshifts technique

5 citations · 5 across the 13 of their papers we have counts for

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astro-ph.HE2026

A broadband outburst of the compact steep-spectrum quasar 3C 138 in 2024-2026

T. V. Mufakharov, Yu. V. Sotnikova, V. V. Vlasyuk +20

After several decades of relative quiescence, the compact steep-spectrum quasar 3C 138 entered an active phase in 2024-2026, exhibiting strong broadband flaring. We investigate its…