Tag Archives: active galactic nuclei

The Era of Neutrino Astronomy has Begun

COLLEGE PARK, Md. – Astrophysicists using a telescope embedded in Antarctic ice have succeeded in a quest to detect and record the mysterious phenomena known as cosmic neutrinos – nearly massless particles that stream to Earth at the speed of light from outside our solar system, striking the surface in a burst of energy that can be as powerful as a baseball pitcher’s fastball. Next, they hope to build on the early success of the IceCube Neutrino Observatory to detect the source of these high-energy particles, said Physics Professor Gregory Sullivan, who led the University of Maryland’s 12-person team of contributors to the IceCube Collaboration.

“The era of neutrino astronomy has begun,” Sullivan said as the IceCube Collaboration announced the observation of 28 very high-energy particle events that constitute the first solid evidence for astrophysical neutrinos from cosmic sources.  (more…)

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Astrophysicists Find Evidence of Black Holes Ripping Stars Apart

Sifting through observation data obtained of more than 2 million galaxies, a research team including UA astronomer Dennis Zaritsky has discovered phenomena telling of stars dying a violent death

Astrophysicists at the University of Arizona and elsewhere have found evidence of black holes destroying stars, a long-sought phenomenon that provides a new window into general relativity. (more…)

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