Matches in SemOpenAlex for { <https://semopenalex.org/work/W3100817044> ?p ?o ?g. }
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- W3100817044 abstract "We present U-, V-, and I-band images of the host galaxy of Hercules A (3C 348) obtained with HST/WFC3/UVIS. We find a network of dusty filaments which are more complex and extended than seen in earlier Hubble Space Telescope (HST) observations. The filaments are associated with a faint blue continuum light (possibly from young stars) and faint Hα emission. It seems likely that the cold gas and dust has been stripped from a companion galaxy now seen as a secondary nucleus. There are dusty filaments aligned with the base of the jets on both eastern and western sides of the galaxy. The morphology of the filaments is different on the two sides—the western filaments are fairly straight, while the eastern filaments are mainly in two loop-like structures. We suggest that despite the difference in morphologies, both sets of filaments have been entrained in a slow-moving boundary layer outside the relativistic flow. As suggested by Fabian et al., magnetic fields in the filaments may stabilize them against disruption. We consider a speculative scenario to explain the relation between the radio source and the shock and cavities in the hot intracluster medium seen in the Chandra data. We suggest that the radio source originally (∼60 Myr ago) propagated along a position angle of ∼35° where it created the shock and cavities. The radio source axis changed to its current orientation (∼100°) possibly due to a supermassive black hole merger and began its current epoch of activity about 20 Myr ago." @default.
- W3100817044 created "2020-11-23" @default.
- W3100817044 creator A5014222092 @default.
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- W3100817044 creator A5045626861 @default.
- W3100817044 creator A5070372059 @default.
- W3100817044 date "2013-06-13" @default.
- W3100817044 modified "2023-10-05" @default.
- W3100817044 title "HUBBLE SPACE TELESCOPEOBSERVATIONS OF DUSTY FILAMENTS IN HERCULES A: EVIDENCE FOR ENTRAINMENT" @default.
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