Äîêóìåíò âçÿò èç êýøà ïîèñêîâîé ìàøèíû. Àäðåñ îðèãèíàëüíîãî äîêóìåíòà : http://hea-www.harvard.edu/ChandraSNR/SNRJ0526.0-6604/fit_detail.cgi
Äàòà èçìåíåíèÿ: Unknown
Äàòà èíäåêñèðîâàíèÿ: Tue Oct 2 05:22:14 2012
Êîäèðîâêà:
Ïîèñêîâûå ñëîâà: arp 220

Chandra Images for SNR J0526.0-6604

Chandra SNR

True Color Image Gallery: Galactic SNR | Magellanic Cloud SNR

Fit Detail for SNR J0526.0-6604

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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