Matches in SemOpenAlex for { <https://semopenalex.org/work/W3100018958> ?p ?o ?g. }
- W3100018958 endingPage "67" @default.
- W3100018958 startingPage "67" @default.
- W3100018958 abstract "A fraction of active galactic nuclei (AGN) exhibit dramatic variability, which is observed on timescales down to minutes in the X-ray band. We introduce the case study of 1H 1934-063 (z = 0.0102), a Narrow-line Seyfert 1 among the brightest and most variable AGN ever observed with XMM-Newton. This work includes spectral and temporal analyses of a concurrent XMM-Newton and NuSTAR 2015 observation lasting 130 kiloseconds, during which the X-ray source exhibited a steep (factor of ∼6) plummet and subsequent full recovery of the flux level, accompanied by deviation from a single log-normal flux distribution. We rule out Compton-thin obscuration as the cause for this dramatic variability observed even at NuSTAR energies. In order to constrain coronal geometry, dynamics, and emission/absorption processes, we compare a detailed spectral fitting with a Fourier-based timing analysis. Similar to other well-studied, highly variable Seyfert 1s, this AGN is X-ray bright and displays strong reflection features. We find a narrower broad iron line component compared to most Seyfert 1s, and constrain the black hole spin to be <0.1, one of the lowest yet discovered for such systems. Combined spectral and timing results are consistent with a dramatic change in the continuum on timescales as short as a few kiloseconds dictating the nature of this variability. We also discover a Fe–K time lag, measuring a delay of 20 s between relativistically blurred reflection off the inner accretion flow and the hard X-ray continuum emission." @default.
- W3100018958 created "2020-11-23" @default.
- W3100018958 creator A5002794812 @default.
- W3100018958 creator A5008070377 @default.
- W3100018958 creator A5011485240 @default.
- W3100018958 creator A5032864894 @default.
- W3100018958 creator A5073000032 @default.
- W3100018958 date "2018-10-31" @default.
- W3100018958 modified "2023-09-26" @default.
- W3100018958 title "X-Ray Reverberation Mapping and Dramatic Variability of Seyfert 1 Galaxy 1H 1934-063" @default.
- W3100018958 cites W135604289 @default.
- W3100018958 cites W1612318524 @default.
- W3100018958 cites W1785639655 @default.
- W3100018958 cites W1894473559 @default.
- W3100018958 cites W1928462395 @default.
- W3100018958 cites W1945550635 @default.
- W3100018958 cites W1963828751 @default.
- W3100018958 cites W1966241513 @default.
- W3100018958 cites W1966667130 @default.
- W3100018958 cites W1967728206 @default.
- W3100018958 cites W1976073519 @default.
- W3100018958 cites W1976518436 @default.
- W3100018958 cites W1982205612 @default.
- W3100018958 cites W1990059939 @default.
- W3100018958 cites W1990418509 @default.
- W3100018958 cites W1999220943 @default.
- W3100018958 cites W2001303044 @default.
- W3100018958 cites W2005501750 @default.
- W3100018958 cites W2005715192 @default.
- W3100018958 cites W2007084280 @default.
- W3100018958 cites W2008155829 @default.
- W3100018958 cites W2011632996 @default.
- W3100018958 cites W2014220587 @default.
- W3100018958 cites W2015711235 @default.
- W3100018958 cites W2017727845 @default.
- W3100018958 cites W2018041393 @default.
- W3100018958 cites W2020076772 @default.
- W3100018958 cites W2031098172 @default.
- W3100018958 cites W2032130093 @default.
- W3100018958 cites W2037338049 @default.
- W3100018958 cites W2037687557 @default.
- W3100018958 cites W2039126150 @default.
- W3100018958 cites W2044541854 @default.
- W3100018958 cites W2052926897 @default.
- W3100018958 cites W2053806672 @default.
- W3100018958 cites W2056938384 @default.
- W3100018958 cites W2058095754 @default.
- W3100018958 cites W2059686410 @default.
- W3100018958 cites W2065603345 @default.
- W3100018958 cites W2069772990 @default.
- W3100018958 cites W2074347757 @default.
- W3100018958 cites W2078719403 @default.
- W3100018958 cites W2081552080 @default.
- W3100018958 cites W2088772258 @default.
- W3100018958 cites W2089079034 @default.
- W3100018958 cites W2090273667 @default.
- W3100018958 cites W2092894801 @default.
- W3100018958 cites W2113417477 @default.
- W3100018958 cites W2114861383 @default.
- W3100018958 cites W2118235126 @default.
- W3100018958 cites W2122384081 @default.
- W3100018958 cites W2128252132 @default.
- W3100018958 cites W2137456004 @default.
- W3100018958 cites W2142220522 @default.
- W3100018958 cites W2146450291 @default.
- W3100018958 cites W2148544288 @default.
- W3100018958 cites W2154078330 @default.
- W3100018958 cites W2159189930 @default.
- W3100018958 cites W2287051925 @default.
- W3100018958 cites W2347167370 @default.
- W3100018958 cites W2399949365 @default.
- W3100018958 cites W2618557103 @default.
- W3100018958 cites W2793081149 @default.
- W3100018958 cites W2811004927 @default.
- W3100018958 cites W2953375652 @default.
- W3100018958 cites W3016538194 @default.
- W3100018958 cites W3098930533 @default.
- W3100018958 cites W3099676524 @default.
- W3100018958 cites W3099808787 @default.
- W3100018958 cites W3099999153 @default.
- W3100018958 cites W3101550526 @default.
- W3100018958 cites W3102764898 @default.
- W3100018958 cites W3102768411 @default.
- W3100018958 cites W3103731972 @default.
- W3100018958 cites W3103843170 @default.
- W3100018958 cites W3104613640 @default.
- W3100018958 cites W3104914704 @default.
- W3100018958 cites W3105263940 @default.
- W3100018958 cites W3123112321 @default.
- W3100018958 cites W3123668798 @default.
- W3100018958 cites W3125390728 @default.
- W3100018958 cites W3150752573 @default.
- W3100018958 cites W3172840747 @default.
- W3100018958 cites W329666213 @default.
- W3100018958 cites W4213310639 @default.
- W3100018958 cites W4292403095 @default.
- W3100018958 cites W4293232159 @default.
- W3100018958 cites W4293763428 @default.