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The tropical stratospheric temperature and wind field of several planets oscillate quasi-periodically. Recent Cassini observations show that Saturn’s oscillations were disturbed for more than three years by the year-long giant storm that appeared in 2010.
How do you build a (distance) ladder from the closest stars to the far-away supernovae and all the way back to the last scattering surface of the Universe? Jeremy Mould summarizes some of the highlights of the Stellar Populations and the Distance Scale conference.
The first detection of electromagnetic emission from a gravitational wave source bridges the gap between one of the most energetic phenomena in the Universe and their dark, difficult to detect progenitors.
The Gravitational-wave Optical Transient Observer telescope will provide a rapid response to gravitational wave event triggers in order to locate optical counterparts for subsequent multi-wavelength follow-up, explains Danny Steeghs.
Through involvement in CHIME, ALMA, the Jansky VLA and the Murchison Widefield Array, Canada is well placed in current radio astronomy facilities and the future looks even brighter, with strategic interest in the SKA and the Next Generation VLA.
The discovery of Jupiter’s southern X-ray aurora reveals that it is tellingly different from the northern one, providing important clues to how Jupiter’s polar aurorae are generated.
It’s finally happened. With the first detection of a neutron star merger by LIGO and Virgo, astronomers have at long last begun the exploration of multi-messenger gravitational-wave astrophysics.
The detection of bright, rapid optical pulsations from pulsar PSR J1023+0038 have provided a surprise for researchers working on neutron stars. This discovery poses more questions than it answers and will spur on future work and instrumentation.
The atmosphere of evolved star W Hya has been resolved with ALMA and shown to be shock heated. These observations provide important empirical constraints for the understanding of circumstellar structure, convection, chemistry and pulsation.
Saturn’s proton radiation belts are quite an isolated system and can be used as a laboratory for endogenous impacts on planetary radiation belts. Their evolution over a solar cycle shows variations associated with changes in magnetospheric radial diffusion.
A delay between rapid optical and X-ray flux variations from an accreting black-hole binary is reported together with a brightening radio jet, indicating a characteristic elevation of the radiative jet base of 0.1 light-seconds above the black hole.
The authors discover that Jupiter's southern X-ray aurora is concentrated into a hot spot (until now only the north pole was known to have one), which behaves completely differently in brightness and timing pulsation from its northern counterpart.
