Quirky pulsar system discovered at Arecibo challenges theories of binary formation

A comparison of the orbits of the pulsar J1903+0327 and its possible sun-like companion star with the orbit of the Earth around the sun. The objects' sizes are not to scale. Bill Saxton, NRAO/AUI/NSF


Gambling on Gravitational Waves

Sep 08, 2004

At the Institute of Physics conference Photon 04 today, Professor Jim Hough, one of the UK's leading scientists, revealed that he thinks high street bookmakers are crazy to be offering odds of 100-1 on whether Gravitational ...


Star eats companion

Sep 06, 2005

ESA's Integral space observatory, together with NASA's Rossi X-ray Timing Explorer spacecraft, has found a fast-spinning pulsar in the process of devouring its companion.
This finding supports the theory ...


Astronomers weigh 'recycled' millisecond pulsar

Jan 12, 2006

A team of U.S. and Australian astronomers is announcing today that they have, for the first time, precisely measured the mass of a millisecond pulsar -- a tiny, dead star spinning hundreds of times every second. ...


'Deep impact' of pulsar around companion star

Feb 28, 2006

Astronomers have witnessed a never-seen-before event in observations by ESA's XMM-Newton spacecraft - a collision between a pulsar and a ring of gas around a neighbouring star.


Astronomers find first ever gamma ray clock

Nov 27, 2006

Astronomers using the H.E.S.S. telescopes have discovered the first ever modulated signal from space in Very High Energy Gamma Rays – the most energetic such signal ever observed.


Neutron stars can be more massive, while black holes are more rare

Jan 14, 2008

Neutron stars and black holes aren’t all they’ve been thought to be. In fact, neutron stars can be considerably more massive than previously believed, and it is more difficult to form black holes, according to new research ...


Strange star stumps astronomers

May 16, 2008

An obese oddball of a star has left astronomers wondering how it could have formed. Dr David Champion and his colleagues at CSIRO’s Australia Telescope National Facility publish their findings about the star ...


Einstein was right: Unique stellar system provides 'laboratory' for testing relativity

Jul 03, 2008

Researchers at McGill University's Department of Physics – along with colleagues from several countries – have confirmed a long-held prediction of Albert Einstein's theory of general relativity, via observations ...