Table 2 Spectral fitting results for the X-ray data.

From: X-ray flares from the stellar tidal disruption by a candidate supermassive black hole binary

Model component

Parameter

XMM1

XMM2

  

June 2016

Nov 2016

Model 1

   

Blackbody

kTBB (eV)

58 ± 5

60\({\,}_{-11}^{+9}\)

Power-law

Γ

… 

6.4 ± 0.5

Neutral absorber

NH (×1022 cm−2)

 <0.06

 <0.23

Model 2

   

Blackbody 1

kTBB1 (eV)

… 

51\({\,}_{-8}^{+5}\)

Blackbody 2

kTBB2 (eV)

… 

90\({\,}_{-13}^{+20}\)

Neutral absorber

NH (×1022 cm−2)

…

 <0.03

Statistics

χ2/dof

25.6/35

80.6/86 (82.2/87)

  1. The χ2 statistics in the parentheses is for Model 2.
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