A deep XMM-Newton look on the thermally emitting isolated neutron star RX J1605.3+3249

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Volume 623 (March 2019)

A&A, 623 (2019) A73

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Table 5.

Results of the best-fit double-blackbody model with a Gaussian absorption line (per observation and camera).

`obsid`		NHP	N_H^a			^b	^b	ϵ	σ	EW	f_X^c
		(%)		(eV)	(eV)	(km)	(km)	(3σ, eV)	(eV)	(1σ, eV)
pn
2012	1.18	26						< 370	119(10)	< 400	6.37(5)
201	0.89	88					1.15(6)	< 360		< 200	6.73(3)
301	1.04	32		59(4)				< 380		< 220	6.28(3)
401	0.96	63						< 400		< 250	6.58(5)
501	0.88	61		57(4)	114.0(1.6)		1.55(6)	< 370		< 240	6.46(4)

MOS^d
2012	1.02	41			127(3)			< 430		< 90	6.58(6)
201	1.09	19			125.6(2.2)		0.88(5)	< 350		< 190	6.70(4)
301	0.95	66			131(4)			< 450		< 75	6.29(4)
401	1.05	31		69(5)	126(3)		0.85(6)	< 480		< 220	6.58(5)
501	1.06	22				> 20	1.26(6)	520(30)		< 160	7.01(6)

EPIC^e
2012	1.15	2.2			120.5(1.8)		1.16(5)	< 390		< 200	6.40(3)
201	1.00	48			122.3(1.2)		1.07(3)	< 340		< 150	6.885(25)
301	1.02	37					1.12(5)	< 420		< 150	6.45(3)
401	1.01	41			121.6(1.8)		1.06(5)	< 370		< 160	6.77(3)
501	1.08	14			123.6(1.8)			< 350		< 150	6.82(3)

Multi-epoch fits^f
pn	1.02	29			117.0(8)		1.34(3)	< 320			6.468(16)
MOS	1.11	< 1			125.7(1.2)		0.90(3)	< 340			6.877(22)
EPIC	1.12	< 1			121.7(7)		1.101(20)	< 320			6.663(12)

Multi-epoch fits^g				kT^∞ (eV)		R^∞ (km)

pn	3.8	≪1	2.4^⋆					< 300	170.7(8)		6.077(7)
MOS	2.5	≪1	2.4^⋆					< 305	180.8(1.5)		5.678(10)
EPIC	5.5	≪1	2.4^⋆			4.94 ± 0.03		< 300	174.1(6)		5.928(5)

Notes. Errors are 1σ confidence levels. The model fitted to the data in XSPEC is tbabs(bbody+bbody-gauss). The degrees of freedom (d.o.f.) of each fit are within 182 and 202 (pn spectra), 179 and 197 (MOS), 368 and 406 (EPIC). The d.o.f. of the multi-epoch double-blackbody fits are 992, 1736, and 1200 (for pn, MOS, and EPIC, respectively).

^(a)

The column density is in units of 10²⁰ cm⁻².

^(b)

The radiation radius at infinity for each component is computed from the derived blackbody luminosity for a source at a distance of d ≡ d₃₀₀ = 300 pc.

^(c)

The observed model flux is in units of 10⁻¹² erg s⁻¹ cm⁻² in energy band 0.2–12 keV.

^(d)

Simple fit of combined MOS1 and MOS2 spectra (per observation).

^(e)

Simultaneous fit of pn and combined MOS spectra (per observation).

^(f)

Simultaneous fit per instrument (5 pn, 10 MOS1/2, and 6 pn and stacked MOS spectra).

^(g)

Results of simultaneous fits of a single-temperature model, tbabs(bbody-gauss).

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