Compact astrophysical objects articles from across Nature Portfolio

Based on physical modelling and using deep-learning tools, a 3D reconstruction of a flare orbiting the black hole Sagittarius A*, at the centre of the Milky Way, provides observational clues to the formation of high-energy flares and the dynamics of black-hole accretion disks.

We report observations of GRB 231115A, positionally coincident with the starburst galaxy M82, that unambiguously qualify this burst as a giant flare from a magnetar, which is a rare explosive event releasing gamma rays.

A three-dimensional reconstruction of a bright flare orbiting the black hole Sagittarius A^* is computationally recovered from ALMA light curve data by constraining a neural network with a gravitational model of black holes.

A radio-loud magnetar, XTE J1810–197, has been observed to precess shortly after an X-ray outburst. The precession decayed over the subsequent few months, which probably rules out freely precessing magnetars as the source of the fast radio bursts.

A joint analysis of the diffuse γ-ray and neutrino emissions in the Galaxy shows that there is a non-negligible leptonic component in the diffuse γ-ray emission below 100 TeV that is contributed by pulsar halos.

A modelling analysis shows that an unusually long gamma-ray burst gave rise to a lanthanide-rich kilonova following the merger of a neutron star–neutron star or of a neutron star–black hole.

Based on physical modelling and using deep-learning tools, a 3D reconstruction of a flare orbiting the black hole Sagittarius A*, at the centre of the Milky Way, provides observational clues to the formation of high-energy flares and the dynamics of black-hole accretion disks.

Binary neutron star mergers are complex to understand astrophysically. A small piece of the puzzle may now have been solved using a computationally intensive simulation to explain how short gamma-ray bursts can be launched by a magnetar engine.

Mathematical proofs of black hole physics are becoming too complex even for specialists.