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- W4308503192 abstract "We report the discovery of a new ``changing-look'' active galactic nucleus (CLAGN) event, in the quasar SDSS J162829.17+432948.5 at z=0.2603, identified through repeat spectroscopy from the fifth Sloan Digital Sky Survey (SDSS-V). Optical photometry taken during 2020--2021 shows a dramatic dimming of ${Delta}$g${approx}$1 mag, followed by a rapid recovery on a timescale of several months, with the ${lesssim}$2 month period of rebrightening captured in new SDSS-V and Las Cumbres Observatory spectroscopy. This is one of the fastest CLAGN transitions observed to date. Archival observations suggest that the object experienced a much more gradual dimming over the period of 2011--2013. Our spectroscopy shows that the photometric changes were accompanied by dramatic variations in the quasar-like continuum and broad-line emission. The excellent agreement between the pre- and postdip photometric and spectroscopic appearances of the source, as well as the fact that the dimmest spectra can be reproduced by applying a single extinction law to the brighter spectral states, favor a variable line-of-sight obscuration as the driver of the observed transitions. Such an interpretation faces several theoretical challenges, and thus an alternative accretion-driven scenario cannot be excluded. The recent events observed in this quasar highlight the importance of spectroscopic monitoring of large active galactic nucleus samples on weeks-to-months timescales, which the SDSS-V is designed to achieve." @default.
- W4308503192 created "2022-11-12" @default.
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- W4308503192 date "2022-10-31" @default.
- W4308503192 modified "2023-10-17" @default.
- W4308503192 title "A Transient “Changing-look” Active Galactic Nucleus Resolved on Month Timescales from First-year Sloan Digital Sky Survey V Data" @default.
- W4308503192 cites W1986644900 @default.
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- W4308503192 cites W2052937506 @default.
- W4308503192 cites W2063568047 @default.
- W4308503192 cites W2086583767 @default.
- W4308503192 cites W2103474895 @default.
- W4308503192 cites W2111817932 @default.
- W4308503192 cites W2123023495 @default.
- W4308503192 cites W2141513838 @default.
- W4308503192 cites W2142039453 @default.
- W4308503192 cites W2157917411 @default.
- W4308503192 cites W2161126123 @default.
- W4308503192 cites W2561082351 @default.
- W4308503192 cites W2592523442 @default.
- W4308503192 cites W2637629984 @default.
- W4308503192 cites W2766147632 @default.
- W4308503192 cites W2796113171 @default.
- W4308503192 cites W2803326584 @default.
- W4308503192 cites W2888532099 @default.
- W4308503192 cites W2904801071 @default.
- W4308503192 cites W2905241809 @default.
- W4308503192 cites W2963317296 @default.
- W4308503192 cites W2974344511 @default.
- W4308503192 cites W2996708912 @default.
- W4308503192 cites W3043687200 @default.
- W4308503192 cites W3094818009 @default.
- W4308503192 cites W3095093712 @default.
- W4308503192 cites W3095800901 @default.
- W4308503192 cites W3098804876 @default.
- W4308503192 cites W3099481196 @default.
- W4308503192 cites W3099878876 @default.
- W4308503192 cites W3099953592 @default.
- W4308503192 cites W3100420632 @default.
- W4308503192 cites W3100613313 @default.
- W4308503192 cites W3100812970 @default.
- W4308503192 cites W3101138540 @default.
- W4308503192 cites W3101463799 @default.
- W4308503192 cites W3102058463 @default.
- W4308503192 cites W3102156917 @default.
- W4308503192 cites W3102592427 @default.
- W4308503192 cites W3103145119 @default.
- W4308503192 cites W3104598406 @default.
- W4308503192 cites W3105257890 @default.
- W4308503192 cites W3106053650 @default.
- W4308503192 cites W3125487458 @default.
- W4308503192 cites W3157757780 @default.
- W4308503192 cites W3199988357 @default.
- W4308503192 cites W3209418438 @default.
- W4308503192 cites W4221140919 @default.
- W4308503192 cites W4233629529 @default.
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- W4308503192 doi "https://doi.org/10.3847/2041-8213/ac9a47" @default.
- W4308503192 hasPublicationYear "2022" @default.