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Äàòà èíäåêñèðîâàíèÿ: Tue Oct 2 05:21:58 2012
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Chandra Images for SNR J0519.5-6902

True Color Image Gallery: Galactic SNR | Magellanic Cloud SNR

Fit Detail for SNR J0519.5-6902

nH was derived by fitting observed spectrum with two thermal plasma model.

component A:

dominant at inner region
parameters were derived from bright shell at N.
Abundance of O-like element was set to zero asumming Typ1 I SN( Hughes et al., 1995 ).

source=(xswabs * xsvraymond)
reduce chi^2 = 7.41398
nh = 0.2283 10^22/cm^2
PARAMETERS

DataSet 1: 153 data points -- 144 degrees of freedom.
Statistic value = 1067.61
Probability [Q-value] = 0
Reduced statistic = 7.41398

--end--

component B:

dominant at outer region
parameters were derived from clump at NE.

source=(xswabs * xsvraymond)
reduce chi^2 =
nh = 0.3298 10^22/cm^2
PARAMETERS

DataSet 3: 90 data points -- 76 degrees of freedom.
Statistic value = 246.296
Probability [Q-value] = 7.54433e-20
Reduced statistic = 3.24074

--end--

Total:

Total spectrum was fiited with above two component.
Only nH and normaliztion factor was thawed.
Williams et al.(2001) derived nH=0.22 with vnpshock model.

source=(xswabs * (xsvraymond + xsvraymond))
reduce chi^2 =
nh = 0.2446 10^22/cm^2
PARAMETERS

DataSet 2: 200 data points -- 197 degrees of freedom.
Statistic value = 3302.85
Probability [Q-value] = 0
Reduced statistic = 16.7657

--end--

Total fit with additional component:

For better estimation of flux

source=(xswabs * ((xsvraymond + xsvraymond) + xsraymond))
reduce chi^2 =
nh = 0.2446 10^22/cm^2
PARAMETERS

DataSet 2: 200 data points -- 199 degrees of freedom.
Statistic value = 3227.76
Probability [Q-value] = 0
Reduced statistic = 16.2199

--end--

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