Qingzheng Yu et al 2026 ApJL 1007 L32
Using the Five-hundred-meter Aperture Spherical radio Telescope, astronomers have discovered an extended neutral hydrogen structure indicative of either tidal debris or accretion from the cosmic web.
Rimpei Chiba et al 2026 ApJ 1006 132
Even in a noisy environment with fluctuations in pattern speed and encounters with the Sagittarius dwarf galaxy, a tree-ring structure arises in phase space measurements of the Milky Way’s galactic bar.
Stefan J. Hofmeister et al 2026 ApJS 286 3
Researchers have assessed the diffusion and scattering within an ultraviolet instrument on board Solar Orbiter, which takes detailed observations of our home star from as close as about 60 au.
Claire S. Ye and Raymond G. Carlberg 2026 ApJL 1007 L25
Pairing cold dark matter simulations with observations of stellar streams and globular clusters, researchers have extracted a declining power-law-like globular cluster initial mass function.
Hiromichi Tagawa et al 2026 ApJ 1006 121
Emission arising from the merger of stellar-mass black holes in an active galactic nucleus disk should be identifiable through monitoring of order 1,000 active galactic nuclei of sufficient luminosity for a year.
P. Wang et al 2026 AJ 172 102
After identifying a new globular cluster, HSC 61, belonging to the Sagittarius dwarf galaxy, researchers have mapped the stellar stream, determined its metallicity, and analyzed the Sagittarius merger event.