Using 16 years of observations from the Chandra X-ray Observatory to assess X-ray variability of 78 active galactic nuclei in dwarf galaxies, researchers find few instances of tidal disruption events.
During its commissioning and pilot phases, the Wide Field Survey Telescope stared at the galactic plane for 13 hours, leading to the discovery of a variable hot white dwarf and an ellipsoidal white dwarf binary.
New high-resolution near-infrared spectra of nine stars reveal the chemical abundance trends for more than a dozen elements, providing clues to the formation history of the Milky Way’s nuclear star cluster.
Using a normalizing flow emulator, researchers predict the gravitational wave strain distribution due to supermassive black hole binaries; this method outperforms Gaussian process methods.
The current orbit of Mars’s larger and closer-in moon, Phobos, is consistent with either formation in the early solar system and inward migration, or production in an ongoing ring–moon cycle.
High-resolution imagery, thermal observations, topographic, geological, and mineralogical analyses suggest that a previously identified cave candidate is connected to the subsurface cave environment.