Thomas Ayres 2023 ApJS 266 6
The Wilson–Bappu effect describes the correlation between a star’s luminosity and the strength of a particular calcium emission line arising from its chromosphere.
Giovanni Sabatini et al 2023 ApJL 947 L18
Cosmic rays — high-energy charged particles accelerated by distant cosmic engines — play an important role in determining the composition and ionization state of star-forming molecular clouds.
Jaegeun Park et al 2023 ApJ 945 33
X-ray data illuminate the particle properties of a pulsar wind nebula; these observations suggest that even higher-energy particles may be present in the source, opening avenues for more study.
Yury S. Aglyamov et al 2023 Planet. Sci. J. 4 111
Adaptation of an existing model allows for investigating lightning on all the gas and ice giants in our solar system; lightning has been either directly observed or inferred to occur on all four giant planets.
Senyu Qi et al 2023 AJ 165 187
A study of single-lined spectroscopic binaries, in which only one set of spectral lines is observed to move back and forth over the course of an orbit, turns up a handful of candidate white dwarfs and neutron stars.
Elias R. Most and Eliot Quataert 2023 ApJL 947 L15
In the brief moments before collapse, hypermassive neutron stars may be capable of emitting flares and collimated jets, which could power the precursors to short-duration gamma-ray bursts.