Is what was narrated about the torment of fornicators (men) and fornicators (women) in a tannur (oven) wide at its bottom and narrow at its top, and the fornicating women being hung by their breasts, with fire coming to them from beneath while they scream and wail, authentic?

The description of male and female fornicators is accurate, except for the part about them being hung by their breasts, which Al-Albani deemed weak. As for the rest of thecriptions, Al-Bukhari narrated them, where the Prophet, peace and blessings be upon him, mentioned that he saw in his dream naked men and women in a structure like an oven, with flames coming to them from beneath. The two angels informed him that these were the male and female fornicators.