Jonas P. Pereira et al 2023 ApJ 950 185
Neutron stars, the exceptionally dense remnants of massive stars, might contain cores of quark matter — a possibility that could be distinguished from a nucleonic core by future gravitational wave observations.
John M. Harmon et al 2023 Planet. Sci. J. 4 150
Placing a lander on the surface of Saturn’s moon Enceladus is astrobiologically appealing but logistically challenging; models suggest that the icy, powdery surface must be at least somewhat compacted for landing to succeed.
Aaron M. Meisner et al 2023 AJ 166 57
Astronomers may have detected the first Y-type subdwarf, expanding our sample of brown dwarfs at the extreme low mass and temperature end of the spectral typing sequence.
Nat Gopalswamy et al 2023 ApJL 952 L13
As solar cycle 25 ramps up, so too do our predictions; researchers predict that the peak of the current solar cycle will be similar to the previous cycle or slightly stronger, with similar rates of geomagnetic storms.
Though pulsars are thought to spin extremely regularly, some pulsars show irregular behavior; J1701−3726 has a whole host of strange behaviors, including periods where the pulses nearly disappear.
Yongyun Chen et al 2023 ApJS 268 6
Observations of more than 1,000 blazars — active galactic nuclei with jets pointed almost directly toward Earth — provide a way to investigate how these jets are launched.