Astronomy and Astrophysics – Astronomy
Scientific paper
May 2010
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2010aas...21642809w&link_type=abstract
American Astronomical Society, AAS Meeting #216, #428.09; Bulletin of the American Astronomical Society, Vol. 41, p.842
Astronomy and Astrophysics
Astronomy
Scientific paper
SN 1572 is a famous, and nearby, example of a type Ia supernova; its remnant, Tycho's SNR, has been studied extensively by the Chandra X-ray observatory. Chandra's images show the fluffy structure of the ejecta, potentially due to Rayleigh-Taylor fluid instabilities. The absence of a sharp cutoff in limb brightening suggests that either the reverse shock has been disrupted by these instabilities or that only the Rayleigh-Taylor fingers are radiating in the X-ray band. This project attempts to model these features of Tycho's SNR, using the exponential ejecta profile of Dwarkadas and Chevalier (1998); the hydrodynamics code was augmented by incorporating ionization timescale. The simulation was performed in 3-D, allowing for line-of-sight integration to model the effects Chandra observes and for unfettered instability growth. Further, in order to avoid preferential selection of small angular modes, the simulation was run over all 4π steradians; coordinate singularities at the poles were avoided by using a specialized Yin-Yang grid. We present the results from this simulation, consider the role of ionization timescale in modeling Chandra's observations, and offer suggestions for refinements and changes to the model used.
Blondin John
Borkowski Kazik
Reynolds Steve
Warren Donald
No associations
LandOfFree
Modeling The Structure Of Shocked Ejecta In Tycho's Snr does not yet have a rating. At this time, there are no reviews or comments for this scientific paper.
If you have personal experience with Modeling The Structure Of Shocked Ejecta In Tycho's Snr, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Modeling The Structure Of Shocked Ejecta In Tycho's Snr will most certainly appreciate the feedback.
Profile ID: LFWR-SCP-O-1891626