English: The figure shows 15-second samples of the raw counts (per 20.48 ms) observed in a 1973 sounding-rocket-borne exposure to three of the X-ray brightest binary sources in our galaxy: Her X-1 (1.7 days), Cyg X-3 (0.2 day), and Cyg X-1 (5.6 days).
Дата
Источник
GSFC's ASD: X-Ray Astrophysics Laboratory, A History of X-ray Astronomy at Goddard
Автор
Curator: Meredith Gibb NASA Official: Phil Newman, Astrophysics Science Division (ASD) at NASA's GSFC.
Images produced by NASA are usually free of copyright [...]
The 1.24 second pulsar period associated with Her X-1 is immediately evident from the data. The sharp cut-off at ~24 keV in the flat spectrum observed for Her X-1 in this exposure provided the first reported evidence for radiative transfer effects to be associated with a highly magnetized plasma near the surface of a neutron star.
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{{Information |Description={{en|1=The figure shows 15-second samples of the raw counts (per 20.48 ms) observed in a 1973 sounding-rocket-borne exposure to three of the X-ray brightest binary sources in our galaxy: Her X-1 (1.7 days), Cyg X-3 (0.2 day), an