Stars are born as a result of gravitational contraction of cold gas. For this reason, it had been considered that protostars are irrelevant to the high energy phenomena that show strong X-ray radiation. However, X-ray observations have revealed that protostars often produce violent X-ray explosions. To resolve the problem, Drs. Takasao, Iwasaki, and their collaborators performed large simulations of growing protostars using the supercomputer at Center for Computational Astrophysics, NAOJ. As a result, they found a new energy release mechanism consistent with observations. This result is important for understanding the birth of stars.
Takasao et al., 2019, The Astrophysical Journal Letters, Volume 878, Issue 1, article id. L10, 7 pp. [ADS][ApJL]
Takasao, Shinsuke [personal website]
Iwasaki, Kazunari [personal website]