Gamma Cassiopeiae X-rays Traced to Accreting White Dwarf, Solving a 50-Year Mystery
TL;DR Summary
XRISM data show gamma Cas’s extreme X-rays track the orbit of a magnetized white dwarf siphoning material from its Be-star companion, not the Be star itself, confirming a Be–white-dwarf binary and prompting new models of binary evolution.
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- XRISM solves gamma-Cas’s 50-year X-ray mystery Astronomy Now
- Illustration of the Gamma Cas system (IMAGE) EurekAlert!
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