New rotation period for neutron star RXJ0720: 16.78 sec |
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Highlight publication in Astronomy & Astrophysics |
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Our neutron star model with the three relevant angles | X-ray spectra from XMM-Newton for five different time intervals (groups) |
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Phase-folded light curve for the new rotation period |
Period vs. period derivative with old and new values for RXJ0720 (black and green square), details |
Summary:
- RXJ0720 is one of the brightest and best studied X-ray neutron stars
- New rotation period is 16.78 sec (previous: 8.39 sec)
- Gravitational redshift z = 0.205
- Compactness M / R = 0.105 (with mass M in solar masses, radius R in km)
- published in Hambaryan, Suleimanov, Haberl, Schwope, Neuhäuser, Hohle, Werner