Updated phase coherent timing solution of the isolated neutron star RX J0720.4–3125 using recent XMM-Newton and Chandra observations*

Author： Hohle M. M.   Haberl F.   Vink J.   Turolla R.   Zane S.   de Vries C. P.   Méndez M.  

Publisher： Edp Sciences

E-ISSN： 1432-0746|521|issue|A11-A11

ISSN： 0004-6361

Source： Astronomy & Astrophysics, Vol.521, Iss.issue, 2010-10, pp. : A11-A11

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Abstract

Aims. Since the last phase coherent timing solution of the nearby radio-quiet isolated neutron star RX J0720.4–3125 six new XMM-Newton and three Chandra observations were carried out. The phase coherent timing solutions from previous authors were performed without restricting to a fixed energy band. However, we recently showed that the phase residuals are energy dependent, and thus phase coherent solutions must be computed referring always to the same energy band.

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