Spectral and temporal variations of the isolated neutron star RX J0720.4-3125: new XMM-Newton observations

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Volume 498 / No 3 (May II 2009)

A&A, 498 3 (2009) 811-820

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Table 3:

All EPIC-pn observations in full frame mode with the thin filter of RX J0720.4-3125 with the derived variations of the pulse averaged spectra.
Orbit	MJD	kT	EW	radius
		[eV]	[eV]	[km]
78	51 677	86.5 $\pm$ 0.4	-4.0 $\pm$ 4.0	4.79 $\pm$ 0.09
175	51 870	86.0 $\pm$ 0.7	+5.6 $\pm$ 7.0	4.90 $\pm$ 0.14
533/534	52 585/7	88.4 $\pm$ 0.4	-16.8 $\pm$ 3.3	4.70 $\pm$ 0.07
711	52 940	92.0 $\pm$ 0.6	-64.7 $\pm$ 5.4	-
815	53 148	94.6 $\pm$ 0.5	-58.6 $\pm$ 4.2	4.29 $\pm$ 0.08
986	53 489	94.3 $\pm$ 0.4	-57.8 $\pm$ 3.8	4.35 $\pm$ 0.07
1060	53 636	93.7 $\pm$ 0.5	-55.0 $\pm$ 3.8	4.37 $\pm$ 0.08
1086	53 687	93.1 $\pm$ 0.5	-55.9 $\pm$ 3.8	4.50 $\pm$ 0.08
1181	53 877	93.1 $\pm$ 0.6	-51.2 $\pm$ 4.8	4.44 $\pm$ 0.10
1265	54 045	92.7 $\pm$ 0.6	-53.6 $\pm$ 4.7	4.53 $\pm$ 0.11
1356	54 226	92.4 $\pm$ 0.6	-44.1 $\pm$ 4.9	4.45 $\pm$ 0.11
1454	54 421	91.8 $\pm$ 0.6	-44.6 $\pm$ 4.6	4.50 $\pm$ 0.10

Observations done in different observing modes, which were not used for the fit are in italic. The radius obtained from observation 711 is not used at all (see explanation at the end of Sect. 5). All errors correspond to 90% confidence level.

Source LaTeX | All tables | In the text

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