Matches in SemOpenAlex for { <https://semopenalex.org/work/W2300988227> ?p ?o ?g. }
- W2300988227 endingPage "572" @default.
- W2300988227 startingPage "554" @default.
- W2300988227 abstract "We present observations of rapid (sub-second) optical flux variability in V404 Cyg during its 2015 June outburst. Simultaneous three-band observations with the ULTRACAM fast imager on four nights show steep power spectra dominated by slow variations on ∼100–1000 s time-scales. Near the peak of the outburst on June 26, a dramatic change occurs and additional, persistent sub-second optical flaring appears close in time to giant radio and X-ray flaring. The flares reach peak optical luminosities of ∼ few × 1036 erg s−1. Some are unresolved down to a time resolution of 24 ms. Whereas the fast flares are stronger in the red, the slow variations are bluer when brighter. The redder slopes, emitted power and characteristic time-scales of the fast flares can be explained as optically thin synchrotron emission from a compact jet arising on size scales ∼140–500 Gravitational radii (with a possible additional contribution by a thermal particle distribution). The origin of the slower variations is unclear. The optical continuum spectral slopes are strongly affected by dereddening uncertainties and contamination by strong Hα emission, but the variations of these slopes follow relatively stable loci as a function of flux. Cross-correlating the slow variations between the different bands shows asymmetries on all nights consistent with a small red skew (i.e. red lag). X-ray reprocessing and non-thermal emission could both contribute to these. These data reveal a complex mix of components over five decades in time-scale during the outburst." @default.
- W2300988227 created "2016-06-24" @default.
- W2300988227 creator A5001058178 @default.
- W2300988227 creator A5002374837 @default.
- W2300988227 creator A5004495261 @default.
- W2300988227 creator A5008880127 @default.
- W2300988227 creator A5010795468 @default.
- W2300988227 creator A5015252379 @default.
- W2300988227 creator A5018034654 @default.
- W2300988227 creator A5019970203 @default.
- W2300988227 creator A5020793400 @default.
- W2300988227 creator A5022993973 @default.
- W2300988227 creator A5023584585 @default.
- W2300988227 creator A5025399660 @default.
- W2300988227 creator A5030947689 @default.
- W2300988227 creator A5051550720 @default.
- W2300988227 creator A5051935740 @default.
- W2300988227 creator A5056426096 @default.
- W2300988227 creator A5063041634 @default.
- W2300988227 creator A5065960584 @default.
- W2300988227 creator A5072444894 @default.
- W2300988227 creator A5073373330 @default.
- W2300988227 creator A5076024526 @default.
- W2300988227 creator A5077556226 @default.
- W2300988227 creator A5078123207 @default.
- W2300988227 creator A5078790470 @default.
- W2300988227 creator A5083123082 @default.
- W2300988227 creator A5085497661 @default.
- W2300988227 creator A5086310735 @default.
- W2300988227 creator A5087692582 @default.
- W2300988227 date "2016-03-14" @default.
- W2300988227 modified "2023-10-15" @default.
- W2300988227 title "Furiously fast and red: sub-second optical flaring in V404 Cyg during the 2015 outburst peak" @default.
- W2300988227 cites W101996883 @default.
- W2300988227 cites W1940058668 @default.
- W2300988227 cites W1962131278 @default.
- W2300988227 cites W1968035378 @default.
- W2300988227 cites W1983997351 @default.
- W2300988227 cites W1984465318 @default.
- W2300988227 cites W2000274354 @default.
- W2300988227 cites W2002201591 @default.
- W2300988227 cites W2003755400 @default.
- W2300988227 cites W2015839678 @default.
- W2300988227 cites W2027018483 @default.
- W2300988227 cites W2033220168 @default.
- W2300988227 cites W2036554457 @default.
- W2300988227 cites W2040832135 @default.
- W2300988227 cites W2047448953 @default.
- W2300988227 cites W2048024219 @default.
- W2300988227 cites W2050891937 @default.
- W2300988227 cites W2064353993 @default.
- W2300988227 cites W2065109230 @default.
- W2300988227 cites W2065460684 @default.
- W2300988227 cites W2065628180 @default.
- W2300988227 cites W2067025050 @default.
- W2300988227 cites W2077336148 @default.
- W2300988227 cites W2081890462 @default.
- W2300988227 cites W2106009697 @default.
- W2300988227 cites W2106437382 @default.
- W2300988227 cites W2109472898 @default.
- W2300988227 cites W2111320519 @default.
- W2300988227 cites W2111933858 @default.
- W2300988227 cites W2112807126 @default.
- W2300988227 cites W2113986346 @default.
- W2300988227 cites W2117086226 @default.
- W2300988227 cites W2122342311 @default.
- W2300988227 cites W2127181434 @default.
- W2300988227 cites W2131965879 @default.
- W2300988227 cites W2141183625 @default.
- W2300988227 cites W2154718864 @default.
- W2300988227 cites W2156664725 @default.
- W2300988227 cites W2167635287 @default.
- W2300988227 cites W2169417975 @default.
- W2300988227 cites W2194242912 @default.
- W2300988227 cites W2230723667 @default.
- W2300988227 cites W2477005373 @default.
- W2300988227 cites W2985443361 @default.
- W2300988227 cites W3098427692 @default.
- W2300988227 cites W3098610057 @default.
- W2300988227 cites W3101058436 @default.
- W2300988227 cites W3101223259 @default.
- W2300988227 cites W3101405363 @default.
- W2300988227 cites W3103591172 @default.
- W2300988227 cites W3104110976 @default.
- W2300988227 cites W3106401843 @default.
- W2300988227 cites W3121301903 @default.
- W2300988227 cites W3125323372 @default.
- W2300988227 cites W3156646388 @default.
- W2300988227 cites W4289259219 @default.
- W2300988227 cites W4292310541 @default.
- W2300988227 doi "https://doi.org/10.1093/mnras/stw571" @default.
- W2300988227 hasPublicationYear "2016" @default.
- W2300988227 type Work @default.
- W2300988227 sameAs 2300988227 @default.
- W2300988227 citedByCount "54" @default.
- W2300988227 countsByYear W23009882272016 @default.
- W2300988227 countsByYear W23009882272017 @default.
- W2300988227 countsByYear W23009882272018 @default.