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- W2340762014 abstract "The ROSAT source RX J0852.0-4622, or Vela Jr., superposed on the Vela supernova remnant, has been iden- tified as a separate young supernova remnant based on its shell-like appearance in X-ray > 1.3 keV and on its detection as a source of the 44 Ti γ-ray decay line. However, a re-examination of the observational facts suggests that Vela Jr. should be part of the Vela remnant. We suggest that the shell X-ray feature is produced by a fast ejecta clump (bullet) from the Vela supernova that deposited its kinetic energy in the supernova remnant shell. The estimated energy < 0.3 × 10 49 erg could be supplied by a <~0.1M⊙ clump moving at 1700 km/s. Two-dimensional gas dynamic simulations show that a circular appearance can be produced in the supernova shell under proper conditions. We suggest that the nickel bubble effect is responsible for producing such heavy ejecta clumps in supernovae. There may be other similar X-ray features at a lower brightness level and there may be emission from heavy element ejecta in the object." @default.
- W2340762014 created "2016-06-24" @default.
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- W2340762014 date "2013-01-01" @default.
- W2340762014 modified "2023-09-27" @default.
- W2340762014 title "Vela Jr.: Ejecta-Clump Interaction in the Vela Supernova Remnant" @default.
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