XMM-Newton and SRG/eROSITA observations of the isolated neutron star candidate 4XMM J022141.5−735632

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Volume 666 (October 2022)

A&A, 666 (2022) A148

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Table C.1.

Results of spectral fitting with variable absorption.

NHP^a		C (d.o.f.)	N_H^b	Model parameters

`tbvarabs*bbodyrad`				kT	R_em^d
				(eV)	(km)
A^⋆	70	153 (158)	5.3(9)	67(3)
B^†	70	154 (158)		67.2(2.9)

Notes. Errors are 1σ confidence levels. Models fitted to the data: (A) single-temperature blackbody and (B) “extragalatic” model with Anders & Grevesse (1989) abundances, fixed cm⁻² (Dickey & Lockman 1990), and best-fit listed above.

^(a)

Null-hypothesis probability in percentage that the observed data are drawn from the model.

^(b)

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

^(c)

The unabsorbed flux is in units of 10⁻¹³ erg s⁻¹ cm⁻² (0.2 − 12 keV).

^(d)

The blackbody emission radius at infinity is computed assuming a distance of 1 kpc (A) and 60 kpc (B).

^(⋆)

The best-fit abundance of oxygen is .

^(†)

The best-fit abundance of oxygen is .

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