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Linearly polarized optical emission from a gamma-ray burst reveals the presence of a large-scale distorted magnetic field in the heart of this powerful cosmic explosion.
The European Astronomical Society awarded its most prestigious prizes during the annual European Week of Astronomy and Space Science, held in Prague from 26–30 June 2017.
The length asymmetry of the tidal stellar stream Palomar 5 could have been caused by a past encounter(s) with the Galactic bar, thus limiting its use as a probe for structures in the dark matter halo of the Milky Way.
A time-dependent dark energy component of the Universe may be able to explain tensions between local and primordial measurements of cosmological parameters, shaking current confidence in the concept of a cosmological ‘constant’.
Black holes and spacetime singularities are fundamental in science. While observational proof for black holes is hard to come by, alternatives can be ruled out or confirmed to exist through precision gravitational wave observations.
Australian astronomy has a bright future due to recent investments in major new telescopes, instruments and research centres. In this process, Australia's focus continues to shift from national facilities to new multinational and global partnerships.
Quantifying the effect of active galactic nuclei (AGNs) on their hosts requires knowledge of their life cycle. This review on AGN archaeology summarizes the main recent findings regarding the AGN life cycle from optical and radio observations.
