Multi-wavelength observations of a jet launch in real time from the post-changing-look Active Galaxy 1ES 1927+654
We present results from a high cadence multi-wavelength observational campaign of the enigmatic changing look AGN 1ES 1927+654 from May 2022- April 2024, coincident with an unprecedented radio flare (an increase in flux by a factor of $\sim 60$ over a few months) and the emergence of a spatially res...
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Zusammenfassung: | We present results from a high cadence multi-wavelength observational
campaign of the enigmatic changing look AGN 1ES 1927+654 from May 2022- April
2024, coincident with an unprecedented radio flare (an increase in flux by a
factor of $\sim 60$ over a few months) and the emergence of a spatially
resolved jet at $0.1-0.3$ pc scales (Meyer et al. 2024). Companion work has
also detected a recurrent quasi-periodic oscillation (QPO) in the $2-10$ keV
band with an increasing frequency ($1-2$ mHz) over the same period (Masterson
et al., 2025). During this time, the soft X-rays ($0.3-2$ keV) monotonically
increased by a factor of $\sim 8$, while the UV emission remained near-steady
with $ |
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DOI: | 10.48550/arxiv.2501.02340 |