News tagged with radio emission

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Astronomers discover a new black hole in our galaxy

(Phys.org)—NASA's Swift satellite recently detected a rising tide of high-energy X-rays from a source toward the center of our Milky Way galaxy. The outburst, produced by a rare X-ray nova, announced the ...

Oct 05, 2012
4.5 / 5 (13) 14 | with audio podcast

Our galaxy's 'geysers' are towers of power

"Monster" outflows of charged particles from the centre of our Galaxy, stretching more than halfway across the sky, have been detected and mapped with CSIRO's 64-m Parkes radio telescope. Corresponding to ...

Jan 02, 2013
4.1 / 5 (15) 61 | with audio podcast

Scientists discover radio emissions from fireballs

(Phys.org) —Streaking across the sky at more than 50 kilometers per second at atmospheric heights of more than a 90 kilometers high, researchers using the first station of University of New Mexico's Long ...

Jul 08, 2014
4.7 / 5 (24) 9

Chameleon pulsar baffles astronomers

A pulsar that is able, without warning, to dramatically change the way in which it shines has been identified by an international team of astronomers.

Jan 24, 2013
4.8 / 5 (19) 25 | with audio podcast

Black holes spinning faster than ever before

(PhysOrg.com) -- Two UK astronomers have found that the giant black holes in the centre of galaxies are on average spinning faster than at any time in the history of the Universe. Dr Alejo Martinez-Sansigre ...

May 23, 2011
4.3 / 5 (16) 15 | with audio podcast

'Odd couple' binary makes dual gamma-ray flares

(PhysOrg.com) -- In December 2010, a pair of mismatched stars in the southern constellation Crux whisked past each other at a distance closer than Venus orbits the sun. The system possesses a so-far unique ...

Jun 29, 2011
4 / 5 (4) 3 | with audio podcast