WASHINGTON, Jan. 15 -- Astrophysical Journal Letters, a scientific journal from the American Astronomical Society, published research articles on the following topics in its Jan. 1, 2024, edition (Vol. 960, No. 1):

* First Detection of an Overmassive Black Hole Galaxy UHZ1: Evidence for Heavy Black Hole Seed Formation from Direct Collapse

* High Hard X-Ray Polarization in Cygnus X-1 Confined to the Intermediate Hard State: Evidence for a Variable Jet Component