Tag: black holes
Researchers detect elusive Hawking radiation in a laboratory-built black hole

NASA-JPL/Caltech
Black holes aren’t perfectly black. For the first time, using a model of a black hole that traps sound instead of light, scientists have seen spontaneous evidence of what comes out of them.
These particles are so few and faint that it’s not feasible to observe them for an astrophysical black hole, so Jeff Steinhauer at Technion–Israel Institute of Technology made a tabletop version of a black hole that sucks in sound instead of light.
Using this, he’s the first to see evidence for particles that escape a black hole, called Hawking radiation.
Ultra-Deep Survey unveils observations of largest ever swath of deep universe

Data on over 250,000 galaxies going back 13 billion years will show how galaxies change over time / UKIDSS
Astrophysicists have released images of the largest swath of the deep universe ever observed. The images gaze 13 billion years back in time and cover an area of the sky four times the size of the full moon.
Omar Almaini, at the University of Nottingham, and colleagues netted infrared observations of 250,000 galaxies, the earliest less than a billion years after the Big Bang. The farther away from Earth you look in the universe, the farther back in time you see.
How a global telescope could reveal black holes for the first time – Astronomy

M. Helfenbein, Yale University/OPAC