K. Hagiwara et al 2019 ApJL 887 L6
A search for GeV to TeV neutrinos from blazar TXS 0506+056 by the Super-Kamiokande detector found no excess, despite the 2017 detection of a 290 TeV neutrino event from this direction by IceCube.
Apurva V. Oza et al 2019 ApJ 885 168
Though exomoons are usually too small to detect, observations of sodium and potassium gas in hot Jupiter atmospheres could be a signature of the geological activity venting from an otherwise hidden exo-Io.
Lynne A. Hillenbrand et al 2019 AJ 158 240
The slow rise observed in the optical lightcurve of Gaia 19ajj, a young star associated with a little-studied star-forming region, may be caused by cycles of enhanced disk accretion accompanied by reduced extinction.
M. G. Aartsen et al 2019 ApJ 886 12
Seven years of searching with IceCube for cascade events with energies as low as ~1 TeV induced by neutrinos of all flavors has revealed no significant clustering, placing stringent constraints on neutrino astronomy.
Ting-gui Wang et al 2019 ApJL 886 L5
A recent large-amplitude mid-infrared outburst in the white dwarf 0145+234 in the NEOWISE Survey data is consistent with the tidal breakup of an exoasteroid by the white dwarf.
Benjamin J. S. Pope et al 2019 ApJS 245 8
Via analysis of the unsaturated scattered-light “halo” around the stars that saturated the Kepler detector, precise light curves are retrieved for of most of the brightest stars in K2 fields from Campaign 4 onward.