Prima pagina › Fonti

ESA Science & Technology

Le fonti da cui sono tratti gli articoli inseriti nella sezione Documenti di Elettroni.

XMM-Newton weighs up a rare white dwarf and finds it to be a heavyweight
4 Set 2009 - 21:00

XMM-Newton observations of the X-ray pulsator RX J0648.0-4418, timed to also cover the phase when the source was expected to be eclipsed by its companion, have resulted in a solid, model-independent mass estimation of this object. It appears to be a rare, ultra-massive white dwarf, whose continued study promises to provide sensitive tests for stellar evolution theories. Sandro Mereghetti and colleagues present these results in the 4 September issue of Science.