Brightman, M., Margutti, R., Polzin, A., Jaodand, A., Hotokezaka, K., Alford, J. A. J., et al. (2024). The high energy X-ray probe (HEX-P): sensitive broadband X-ray observations of transient phenomena in the 2030s. Frontiers in Astronomy and Space Sciences, 10: 1292656. doi:10.3389/fspas.2023.1292656.