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Table 1.
Hot coronal best fit parameters are reported, for the five models applied to the data.
| Obs. date | Best fit parameter | χ2/d.o.f. | |
|---|---|---|---|
| CUTOFF POWER LAW | |||
| Γ | Ec (keV) | ||
| February 2013 | 1.79 ± 0.02 | > 200 | 569/516 |
| March 2014 | 1.92 ± 0.02 |
 |
555/499 |
| NTHCOMP | |||
| ΓNth | kTe (keV) | ||
| February 2013 | 1.80 ± 0.02 | > 40 | 574/516 |
| March 2014 | 1.94 ± 0.02 |
 |
560/499 |
| COMPTT−SLAB | |||
| τ | kTe (keV) | ||
| February 2013 |
 |
> 50 | 568/516 |
| March 2014 |
 |
 |
555/499 |
| COMPTT−SPHERE | |||
| τ | kTe (keV) | ||
| February 2013 |
 |
> 40 | 569/516 |
| March 2014 | 0.75 ± 0.55 |
 |
555/499 |
| MOCA−SLAB | |||
| τ | kTe (keV) | ||
| February 2013 |
 |
 |
566/516 |
| March 2014 |
 |
 |
552/499 |
| MOCA−SPHERE | |||
| τ | kTe (keV) | ||
| February 2013 |
 |
 |
561/516 |
| March 2014 |
 |
 |
551/499 |
| MOCA−SPHERE−COMPACT | |||
| τ | kTe (keV) | ||
| February 2013 |
 |
95 ± 15 | 561/516 |
| March 2014 | 0.35 ± 0.05 | > 190 | 552/499 |
Notes. For the MOCA−SPHERE−COMPACT models, we adopted a spherical hot corona configuration, extended from 6 to 100 rg and from 6 up to 20 rg for the 2013 and 2014 observations, respectively.
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