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Increased UV–optical nuclear emission in a nearby galaxy together with a spectrum showing emission lines typical of unobscured AGNs and Bowen fluorescence features suggests a longer-term event of intensified accretion onto the central supermassive black hole.
Precise polarization measurements from the gamma-ray burst polarimeter POLAR suggest that the gamma-ray emission is at most polarized at a level lower than predicted by some models and also shows intrapulse evolution of its polarization angle.
ALMA observations of well-studied quadruple stellar system HD 98800 have revealed the presence of a circumbinary disk in a polar orientation around one of the binary pairs, providing observational confirmation of the theoretical stability of such an arrangement.
