News tagged with black holes

Andromeda galaxy scanned with high-energy X-ray vision

NASA's Nuclear Spectroscopic Telescope Array, or NuSTAR, has captured the best high-energy X-ray view yet of a portion of our nearest large, neighboring galaxy, Andromeda. The space mission has observed 40 "X-ray binaries"—intense ...

dateJan 05, 2016 in Astronomy
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No fireworks in the galactic center

The center of our Milky Way galaxy, about twenty-five thousand light years from Earth, is invisible to us in optical light because of the extensive amounts of absorbing, intervening dust. Radiation at many other wavelengths, ...

dateJan 04, 2016 in Astronomy
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Magnetic fields in powerful radio jets

Super-massive black holes at the centers of galaxies can spawn tremendous bipolar jets when matter in the vicinity forms a hot, accreting disk around the black hole. The rapidly moving charged particles in the jets radiate ...

dateDec 28, 2015 in Astronomy
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Einstein's Cross under the gravitational microlens

A Spanish research team has obtained measurements for the innermost region of a disc of matter in orbital motion around a supermassive black hole in the quasar known as Einstein's Cross (Q2237-0305). It constitutes the most ...

dateDec 23, 2015 in Astronomy
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NuSTAR finds clumpy doughnut around black hole

The most massive black holes in the universe are often encircled by thick doughnut-shaped disks of material. This doughnut material ultimately feeds and nourishes the growing black holes tucked inside. Until recently, some ...

dateDec 17, 2015 in Astronomy
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A new technique to gauge the distant universe

Scientists have developed a technique to use quasars – powerful sources driven by supermassive black holes at the centre of galaxies – to study the universe's history and composition. To demonstrate the new method, based ...

dateDec 04, 2015 in Astronomy
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