Unprecedented Supernova Observation Provides Direct Evidence of Black Hole or Neutron Star Formation

Periodic brightness fluctuations in supernova SN 2022jli suggest the presence of a compact object interacting with a companion star, marking a significant breakthrough in understanding stellar evolution.

Scientists have observed a supernova, SN 2022jli, in a spiral galaxy NGC 157, exhibiting periodic changes in brightness over 200 days, which is unprecedented.
The unusual brightness fluctuations suggest that the supernova has left behind a compact object, either a black hole or a neutron star, which is interacting with a surviving companion star in its binary system.
The compact object is believed to be passing through the puffed-up atmosphere of the companion star, pulling away material and causing periodic brightening as the material falls onto the remnant.
Although it's not yet clear whether the compact object is a black hole or a neutron star, this observation provides the first direct evidence of a link between supernovas and the creation of these dense stellar remnants.
Future telescopes may provide more detailed observations of such events, potentially confirming the presence of a neutron star or black hole in supernova remnants.