Research Articles

  • Apr 13, 2015
  • Homepage Images, News

Simulation of a core-collapse supernova explosion in-progress“Simulation of the ‘cosmic web’ in a cosmological volume 2 billion light years across, which includes thousands of galaxy clusters and groups. The purpose of this simulation was to explore the statistical properties of observations of the intergalactic medium - in particular, relating to its X-Ray emission and the effect that the filaments have on cosmic microwave background photons (i.e., the Sunyaev-Zel’dovich effect). This calculation, approximately half a billion resolution elements and a spatial dynamic range of roughly five orders of magnitude, was the largest cosmological simulation ever performed at the time and was crucial to understanding the biases that the intergalactic medium introduce into observations of galaxy groups and clusters.” 

Associated publications:
http://adsabs.harvard.edu/abs/2007ApJ...671...27H
http://adsabs.harvard.edu/abs/2009ApJ...698.1795H
http://adsabs.harvard.edu/abs/2010ApJ...725.1053H


Topology of spaces of micro-images and texture classification."Topology of spaces of micro-images and texture classification. Methods from the new field of topological data analysis have helped shed light on the structure of spaces of micro-images. In short, most high-contrast small patches from natural images accumulate with high density around a space with the topology of a Klein bottle. This geometric model in conjunction with a compact Fourier-like representation, gives rise to a powerful signature for texture image classification." Read associated publication


Simulation of a core-collapse supernova explosion in-progress“Simulation of a core-collapse supernova explosion in-progress.  This explosion was aided by turbulence strengthened by the presence of realistic, multidimensional structure in the progenitor star.  Robust supernova explosions in 3D have so far been difficult to achieve in the most sophisticated simulations, however, work by MSU researchers is revealing that accurately modeling supernova turbulence and the 3D structure of stars just prior to core collapse may be crucial in uncovering the mechanism that drives successful explosions.” Read associated publication