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Ravit Helled and David Stevenson 2017 ApJL 840 L4

A new model suggests the cores of giant planets might not be distinct from the envelopes surrounding them, unlike the traditional picture of heavy-element cores clearly separated from gaseous envelopes.

B. Gompertz and A. Fruchter 2017 ApJ 839 49

Observations suggest that only a magnetar with a spin period of ~1 ms or faster could provide enough energy to power the associated events of the ultra-long gamma-ray burst 111209A and Supernova 2011kl.

Francesca M. Fornasini et al 2017 ApJS 229 33

38 hard X-ray sources are detected by NuSTAR in the direction of the Norma spiral arm, including active galactic nuclei, X-ray binaries, pulsar wind nebulae, and cataclysmic variables.

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