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Articles on Pulsars

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An artist’s impression of the the NGC 1851E binary system, looking over the shoulder of the dark mystery companion star. MPIfR; Daniëlle Futselaar (

Black hole, neutron star or something new? We discovered an object that defies explanation

It’s too heavy to be a neutron star and too light to be a black hole. So what is it?
An artist’s impression of the Double Pulsar system in which the two pulsars orbit each other every 2.5 hours and send out high-energy beams that sweep across the sky. Image credit: John Rowe Animations/CSIRO

We counted 20 billion ticks of an extreme galactic clock to give Einstein’s theory of gravity its toughest test yet

Astronomers watched a pair of pulsars for 16 years to test the theory of general relativity, which has stood unchallenged for over a century.
A white dward (centre) and its companion pulsar make for an excellent natural gravitational laboratory. Mark Myers/OzGrav

Warp factor: we’ve observed a spinning star that drags the very fabric of space and time

One of Einstein’s weirder predictions is that massive, spinning objects exert a drag on space-time itself. Now an orbiting pair of unusual stars has revealed this effect in action.
The 500-metre Aperture Spherical Telescope (FAST) is the largest single-dish radio telescope in the world. NAOC

How CSIRO is turbocharging the world’s largest radio telescopes

You can’t just buy a radio telescope receiver off the shelf. So CSIRO has been hard at work building receivers for the world’s largest telescopes using the very latest technology.
The vast expanse of Western Australia is perfect for radio astronomy. Pete Wheeler, ICRAR

Tuning in to cosmic radio from the dawn of time

The Murchison Widefield Array sits in remote Western Australia far from noisy civilisation so it can help us understand the universe by tuning into radio waves from the distant cosmos.
A visualisation of gravitational waves emitted by two orbiting supermassive black holes. CSIRO

Where are the missing gravitational waves?

A new study has failed to find evidence of gravitational waves, but that doesn’t mean Einstein was wrong about their existence.

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