Astronomers have observed directly spectroscopically how matter falls from the wind of a giant star onto a neutron star. High-resolution X-ray spectra of the BP Crucis system show red-chosen iron lines and a change from absorption to emission. The data thus allows an unusually immediate view of how the gas stream reorders during a strong X-ray outburst. Greenbelt (U.S.A.). In massive [...] The article Iron lines show how matter falls on a neutro…
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Astronomers have observed directly spectroscopically how matter falls from the wind of a giant star onto a neutron star. High-resolution X-ray spectra of the BP Crucis system show red-chosen iron lines and a change from absorption to emission. The data thus allows an unusually immediate view of how the gas stream reorders during a strong X-ray outburst. Greenbelt (U.S.A.). In massive [...] The article Iron lines show how matter falls on a neutro…