An artistic image inspired by a black hole-neutron star merger event. Credit: Carl Knox, OzGrav/Swinburne Mix pair is “elusive missing piece of the family picture of compact object mergers.” A long time ago, in two galaxies about 900 million light-years away, two black holes each gobbled up their neutron star […]

Artist’s illustration of a double neutron star merger. Credit: NSF/LIGO/Sonoma State/A. Simonnet Scientists from the ARC Centre of Excellence for Gravitational Wave Discovery (OzGrav) have described a way to determine the birth population of double neutron stars — some of the densest objects in the Universe formed in collapsing massive […]

An artistic rendering of the XMM-Newton (X-ray multi-mirror mission) space telescope. A study of archival data from the XMM-Newton and the Chandra X-ray space telescopes found evidence of high levels of X-ray emission from the nearby Magnificent Seven neutron stars, which may arise from the hypothetical particles known as axions. […]

Artist’s depiction of a magnetar. Credit: ESO/L. Calçada Astronomers have recently found the fastest spinning and possibly the youngest magnetar known. This object, known as J1818.0-1607, is located about 21,000 light years away in the Milky Way galaxy. Magnetars are a special class of neutron stars that possess extremely powerful magnetic fields. […]

In the 1970s, physicists uncovered a problem with the Standard Model of particle physics—the theory that describes three of the four fundamental forces of nature (electromagnetic, weak, and strong interactions; the fourth is gravity). They found that, while the theory predicts that a symmetry between particles and forces in our Universe […]

Artistic representation: In a merger of neutron stars extreme temperatures and densities occur. Credit: Dana Berry, SkyWorks Digital, Inc. A new study lead by GSI scientists and international colleagues investigates black-hole formation in neutron star mergers. Computer simulations show that the properties of dense nuclear matter play a crucial role, which directly […]

A powerful X-ray burst erupts from a magnetar – a supermagnetized version of a stellar remnant known as a neutron star – in this illustration. A radio burst detected April 28 occurred during a flare-up like this on a magnetar called SGR 1935. Credit: NASA’s Goddard Space Flight Center/Chris Smith […]

Artist’s impression of a magnetar in outburst, showing complex magnetic field structure and beamed emission, here imagined as following a crust cracking episode. Credit: McGill University Graphic Design Team The fast radio bursts are likely generated by a magnetar, the most magnetic type of star in the universe. Fast radio […]

Credit: NASA Goddard Space Flight Center/CI Lab This illustration shows the hot, dense, expanding cloud of debris stripped from neutron stars just before they collided. This cloud produces a kilonova; that is an astronomical event that occurs when two neutron stars or a neutron star and a black hole merge into each other. This […]

Super Heavyweight and Flyweight in a Cosmic Dance Volunteer distributed computing project Einstein@Home discovers neutron star in unusual binary system. After more than two decades, an international research team led by the Max Planck Institute for Gravitational Physics (Albert Einstein Institute; AEI) in Hannover has identified a Galactic “mystery source” of gamma rays: a […]