Saturday 3 January 2009

Did Dark Matter Power Early Stars?

Original paper:arXiv

The galaxy cluster Cl 0024+17 (ZwCl0024+1652) as seen by
Hubble’s Advanced Camera for Surveys. Credit: NASA, ESA,
M.J. Jee and H. Ford (Johns Hopkins University)


The first stars to light the early universe may have been powered by dark matter, according to a new study. Researchers from the University of Michagan, Ann Arbor call these very first stars "Dark Stars," and propose that dark matter heating provided the energy for these stars instead of fusion. The researchers propose that with a high concentration of dark matter in the early Universe, the theoretical particles called Weakly Interacting Massive Particles(WIMPs), collected inside the first stars and annihilated themselves to produce a heat source to power the stars.(Read paper)

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