A New View of the Supersoft X-Ray Source Cal 87 Observed with XMM-Newton
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🌌 astro-ph
keywords
observedlinesphasesourcexmm-newtonaprilbeencurve
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Cal 87 was observed with XMM-Newton in April of 2003. The source shows a rich emission line spectrum, where lines can be identified if they are red-shifted by 700-1200 km/s. These lines seem to have been emitted in a wind from the system. The eclipse is observed to be shifted in phase by 0.03 phi(orb), where phi(orb) is the phase of the optical light curve.
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