Kun Xu and Xiang-Dong Li 2019 ApJ 877 138
The extremely slow spin of the slowest isolated pulsar, 1E 161348−5055, was likely caused by interactions with a supernova fallback disk that surrounds it; the spin rate can be used to estimate the mass of the disk.
Maria A. Loukitcheva et al 2019 ApJL 877 L26
New ALMA images of a quiet-Sun region reveal the presence of distinct particularly dark/cool areas in the millimeter maps with temperatures as low as 60% of the normal quiet Sun.
Richard Galvez et al 2019 ApJS 242 7
A curated data set (encompassing 6.5 TB!) from the NASA Solar Dynamics Observatory mission is presented in a format suitable for machine-learning research in heliophysics and the physical sciences in general.
Yuhu Miao et al 2019 ApJ 877 61
Observations of NOAA active region AR11166 reveal that the appearance of a satellite sunspot led to recurrent solar blowout jets, 30% of which directly developed into coronal mass ejections.
Dary Ruíz-Rodríguez et al 2019 AJ 157 237
High-resolution ALMA observations of the circumbinary disk orbiting V4046 Sgr, a ~20-Myr-old, actively accreting binary star system, reveal a dust ring and gap structures that may be shaped by a circumbinary planet.
Juhyung Kang et al 2019 ApJL 877 L9
A new model suggests that spiral wave patterns recently detected in sunspot umbrae may be caused by slow magnetoacoustic waves driven below the solar surface.