This soft source (T ~ 80 eV black body temperature) has been detected with ROSAT PSPC at a count rate of 1.6 c s-1 and exhibits a 8.38 periodicity. The error on the position is estimated to be less than 2", from an HRI exposure. No optical counterparts lies within it, giving a limiting magnitude of m
(Adapted from Treves et al. 1996, Lipari proceedings).
Click on the first author to retreive the paper.
Haberl F., Pietsch W., Motch C. & Buckley D.A.H., 1996, IAUC N. 6445
Haberl F., Motch C., Buckley D.A.H., Zickgarf F.J. & Pietsch W., RX J0720.4-3125: Strong evidence for an isolated pulsating neutron star, 1997, A&A in press
Wang J.C.L. Evidence for magnetic field decay in RX J0720.4-3125, 1997, ApJL in press
Konenkov D.Yu., Popov B., RX J0720.4-3125 as a Possible Example of the Magnetic Field Decay of Neutron Stars, Astronomy Letters Vol. 23, p. 569-575, 1997.
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Edited by SC 12/12/1996 (here is a disclaimer).