If dark matter fills the universe, astronomers should see the gamma rays it produces. That evidence has so far failed to materialise Among the most dramatic events in the universe are the death of stars as they collapse into black holes and the collision of black holes themselves. These events are so violent that they… [Read more…]
June 21, 2011
M.R.S. Hawkins The aim of this paper is to present the case that stellar mass primordial black holes make up the dark matter component of the Universe. A near critical density of compact bodies implies that most lines of sight will be gravitationally microlensed, and the paper focuses on looking for the predicted effects on… [Read more…]
May 27, 2011
Astronomers now believe that the cores of trillions of galaxies across the Universe are being powered by supermassive black hole. Recently, a team of experts proposed that these dark behemoths were produced by the collapse of massive stars made out of dark matter. Unlike usual stars, which are made up of normal, baryonic matter, dark… [Read more…]
May 25, 2011
An Australian science student managed to provide additional evidence that expert Fritz Zwicky was right in its theory on where the missing mass of the Universe may be hiding. The work done by Amelia Fraser-McKelvie, 22, has already been published in a scientific journal. The Monash University aerospace engineering/science student made the discovery during a… [Read more…]
May 17, 2011
Cosmic ray detector blasts off on space shuttle AAn instrument for detecting cosmic rays – and possibly even dark matter – has finally been lifted into orbit on board the space shuttle Endeavour. The Alpha Magnetic Spectrometer (AMS), which is the brainchild of the Nobel-prize-winning physicist Samuel Ting, will soon be installed on the International… [Read more…]
May 7, 2011
Newtonian Perturbations on Models with Matter Creation Creation of Cold Dark Matter (CCDM) can macroscopically be described by a negative pressure, and, therefore, the mechanism is capable to accelerate the Universe, without the need of an additional dark energy component. In this framework we discuss the evolution of perturbations by considering a Neo-Newtonian approach where, unlike in… [Read more…]
May 3, 2011
…from CoGeNT Dark Matter Experiment “…..The annual modulation is the closest thing to a smoking gun [for dark matter],” says theorist Jonathan Feng at the University of California, Irvine, who is not part of the CoGeNT team. “This is the first evidence we’ve seen it somewhere other than DAMA……” Read more: http://www.newscientist.com/article/dn20434-second-experiment-hints-at-seasonal-dark-matter-signal.html
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June 21, 2011
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