F. Massaro et al 2020 ApJL 900 L34
Analysis of large-scale environments indicates that BL Lac objects and radio galaxies live in significantly different environments, challenging predictions of the unification scenario of active galaxies.
Chengze Liu et al 2020 ApJS 250 17
A sample of more than 600 ultracompact dwarf (UCD) galaxies are identified in the Virgo galaxy cluster, primarily concentrated within Virgo’s main subclusters, around its brightest galaxies.
Richard Udall et al 2020 ApJ 900 80
Assuming the loudest marginal trigger found by LIGO in 2015–2017, GW170502, was a binary black hole merger, then it represents the formation of a 157-solar-mass intermediate mass black hole.
Stefano Bellotti et al 2020 AJ 160 131
Both self-luminous and reflected-light exoplanets around eclipsing binary stars could be directly imaged by using the eclipse as a natural starshade, thus increasing the planet to star brightness contrast.
Jeremy Darling 2020 ApJL 900 L28
The presence of strong magnetic fields causes conversions of axions to photons; this is used to provide new constraints on axionic dark matter based on observations of the spectrum of magnetar PSR J1745−2900.
Stephen R. Kane et al 2020 Planet. Sci. J. 1 36
Modeling indicates that LHS 3844b, a 1.3-Earth-radius planet with no significant atmosphere in a 0.46-day orbit around an M dwarf, likely has a volatile poor composition and formed interior to the system snow line.