SN 2020bio’s unusual properties suggest that it resulted from the explosion of a lower-mass progenitor (likely around 12 solar masses) that lost most of its hydrogen envelope.
A new age of 41 million years has been calculated for the Carina association, one of the closest stellar associations to Earth; this age is consistent with the older end of previous age estimates.
Kazuki Tokuda et al 2023 ApJL 956 L16
A ring-like structure surrounding a protostar is difficult to explain with well-studied phenomena like molecular outflows and instead may be a sign of magnetic flux transferral.
By tuning rates of star formation and black hole formation, researchers explore the likely rates of neutrino detection by the Super-Kamiokande and Hyper-Kamiokande detectors.
Rui-Nan Li et al 2023 ApJL 956 L2
Researchers explore the possibility that fast radio bursts are produced when neutron stars spiral into supermassive black holes and describe the implications of this scenario.
A new framework allows researchers to determine the small fraction of polycyclic aromatic hydrocarbons (sooty molecules mostly made up of rings of carbon atoms) that are composed of carbon chains rather than rings.