A disk instability model for the quasi-periodic eruptions of GSN 069

Understand

GSN 069 is a recently discovered QPE (Quasi-periodic eruptions) source recurring about every 9 hours.

• The mechanism for the QPEs of GSN 069 is still unclear so far.
• In this work, a disk instability model is constructed to explain GSN 069 based on Pan et al.
• (2021) (PLC21), where the authors proposed a toy model for the repeating changing-look (CL) active galactic nuclei (AGN).