Masahiro Tsujimoto

The XRISM telescope discovered that the wind from neutron star GX 13+1 is not fast but exceptionally dense and slow. This changes our understanding of how such outflows are born and their impact on galaxies.

X-rays from Gamma Cassiopeiae moved in sync with an unseen white dwarf. This showed that the energy flares when the dwarf pulls matter from the larger star. One in ten such systems hides such a companion, shaping stellar fates.