Jenny E. Greene et al 2021 ApJ 917 17
A search for hypercompact star clusters that may host intermediate-mass black holes comes up short, though some models predict ~100 of these wandering black holes exist in the Milky Way.
Francesco Panerai et al 2021 Planet. Sci. J. 2 179
Heating samples of meteorites from room temperature to 1200°C causes metals to melt and internal voids to form, which has implications for the fragmentation of objects entering Earth’s atmosphere.
J. J. Condon et al 2021 ApJ 917 18
Observations of nearby elliptical galaxy IC 4296 from the MeerKAT radio telescope array reveal new morphological features dubbed threads, ribbons, and rings.
Yuki Kimura et al 2021 ApJL 917 L5
Laboratory experiments and simulations suggest that the parent body of the Tagish Lake meteorite was >160 km in diameter before being split apart by collisions, possibly in transit from the Kuiper belt to the asteroid belt.
V. Ashley Villar et al 2021 ApJS 255 24
A neural network has succeeded in identifying rare transient events in simulated data well before they reach peak brightness, potentially greatly enhancing our ability to follow up on these fleeting events.
Reka M. Winslow et al 2021 ApJ 916 94
A coronal mass ejection launched on 10 October 2019 was observed by the Parker Solar Probe on 13 Oct and by STEREO-A on 14 Oct, allowing observations of the short-term radial evolution of the ejection.