Astrophysical Journal

Tail of stray black hole hiding in the Milky Way

It is difficult to find black holes, because they are completely black. In some cases black holes cause effects which can be seen. For example if a black hole has a companion star, gas streaming into the black hole piles ...

dateFeb 02, 2017 in Astronomy
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Mind the gap—Rapid Burster behaviour explained

Scientists observing a curious neutron star in a binary system known as the 'Rapid Burster' may have solved a forty-year-old mystery surrounding its puzzling X-ray bursts. They discovered that its magnetic field creates a ...

dateFeb 01, 2017 in Astronomy
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Fermi sees gamma rays from 'hidden' solar flares

An international science team says NASA's Fermi Gamma-ray Space Telescope has observed high-energy light from solar eruptions located on the far side of the sun, which should block direct light from these events. This apparent ...

dateJan 30, 2017 in Astronomy
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Radio weak blazars

A blazar is a galaxy whose central nucleus is bright at wavelengths from the low energy radio band to high energy gamma rays (each gamma ray photon is over a hundred million times more energetic than the X-rays seen by the ...

dateJan 30, 2017 in Astronomy
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