@misc{zelati2024ultra,
  title={Ultra-long period compact sources: a glimpse into observational breakthroughs and theoretical challenges},
  author={Francesco Coti Zelati and Alice Borghese},
  year={2024},
  eprint={2412.12763},
  archivePrefix={arXiv},
  primaryClass={astro-ph.HE},
  url={https://arxiv.org/abs/2412.12763}
}