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Fit Detail for SNR 0525-66.1
nH was dervide from central source.
Central Object:
spectrum from
central object
does not fit well in the low energy regime.
derived nH is rather large compared to the value(2.5~2.6) given by
Hughes et al.(1998)
.
source=(xswabs * powlaw1d)
reduce chi^2 =
nh = 0.4528 10^22/cm^2
PARAMETERS
DataSet 1: 329 data points -- 326 degrees of freedom.
Statistic value = 384.565
Probability [Q-value] = 0.014089
Reduced statistic = 1.17965
--end--
Point Source(2):
spectum was re-fitted with ignoring energy below 0.6 keV.
this nH value was used in estimating the flux value.
source=(xswabs * powlaw1d)
reduce chi^2 =
nh = 0.3391 10^22/cm^2
PARAMETERS
DataSet 1: 317 data points -- 314 degrees of freedom.
Statistic value = 174.925
Probability [Q-value] = 1
Reduced statistic = 0.557086
--end--
Shell:
spectrum from
shell
nH was fixed at the value derived above.
two thermal plsma model.
source=(xswabs * (xsraymond + xsraymond))
reduce chi^2 =
nh = 0.3373 10^22/cm^2
PARAMETERS
DataSet 4: 239 data points -- 235 degrees of freedom.
Statistic value = 4711.76
Probability [Q-value] = 0
Reduced statistic = 20.05
--end--
Total:
spectrum from
total
nH and power-law component for point source was fixed at the derived value in the previous fit.
source=(xswabs * ((powlaw1d + xsraymond) + xsraymond))
reduce chi^2 =
nh = 0.3373 10^22/cm^2
PARAMETERS
DataSet 3: 243 data points -- 239 degrees of freedom.
Statistic value = 4725.87
Probability [Q-value] = 0
Reduced statistic = 19.7735
--end--
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