A slowly flickering source of radio waves that changes over time might be a neutron star or a white dwarf – but its behaviour doesn’t quite fit any of our theories.
Some ancient texts record what were likely dying stars, faintly visible from Earth. If close enough, these events can disturb telescopes and even damage the ozone layer.
Nuclear explosions on a neutron star feed its jets.
Danielle Futselaar and Nathalie Degenaar, Anton Pannekoek Institute, University of Amsterdam
Powerful jets are launched from the most massive objects in our universe, but we don’t fully understand how. This measurement gets us a step closer to solving the mystery.
An artist’s impression of the the NGC 1851E binary system, looking over the shoulder of the dark mystery companion star.
MPIfR; Daniëlle Futselaar (artsource.nl)
For years, astronomers have been detecting incredibly powerful pulses from the cosmos, without a confirmed source. Recent advances in astronomy are getting us closer to the solution.
When two neutron stars merge and create a black hole, they produce a powerful blast of gamma rays.
A. Simonnet (Sonoma State Univ.) and NASA’s Goddard Space Flight Center
Gamma-ray bursts occur when a massive star explodes or when two neutron stars merge. A newly discovered burst has puzzled astronomers, as it lasted much longer than astronomers would have expected.
A mysterious repeating signal from our galactic backyard is a reminder the universe is full of unexpected surprises, if only we should look.
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
David Yong, Australian National University and Gary Da Costa, Australian National University
The discovery of an ancient star in the Milky Way’s halo is providing evidence for another source that would have produced the galaxy’s heavy elements.
Gravitational waves reveal the demise of super-dense neutron stars spiralling into their black hole companions - the first time such strange and exotic star systems have ever been observed.
A small add-on to existing gravitational wave detectors could reveal what happens to matter as it becomes a black hole, a process like the big bang in reverse.