X-ray Hardness

View complete listing of X-Atlas Spectral Metrics (Hardness, Quantiles).

Hardness Ratios for NGC 4945, Obsid 4900

Aimpoint HR₁ = (H-M)/(H+M) HR₂ = (M-S)/(M+S) HR₃ = (H-S)/(H+S)
ACIS-S 0.964 -0.935 0.295
ACIS-I 0.974 -0.848 0.721

Quantiles for NGC 4945, Obsid 4900

Aimpoint Quantiles 25 % 25 % Error 50 % 50 % Error 75 % 75 % Error
ACIS-S keV 0.664 0.010 3.292 0.091 5.577 0.067

Q-norm 0.047 0.001 0.389 0.012 0.685 0.009
ACIS-I keV 2.694 0.097 4.723 0.061 6.315 0.022

Q-norm 0.311 0.013 0.574 0.008 0.781 0.003

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Hardness Ratios for NGC 4945, Obsid 4900
Aimpoint	HR₁ = (H-M)/(H+M)	HR₂ = (M-S)/(M+S)	HR₃ = (H-S)/(H+S)
ACIS-S	0.964	-0.935	0.295
ACIS-I	0.974	-0.848	0.721

Quantiles for NGC 4945, Obsid 4900
Aimpoint	Quantiles	25 %	25 % Error	50 %	50 % Error	75 %	75 % Error
ACIS-S	keV	0.664	0.010	3.292	0.091	5.577	0.067
ACIS-S	Q-norm	0.047	0.001	0.389	0.012	0.685	0.009
ACIS-I	keV	2.694	0.097	4.723	0.061	6.315	0.022
ACIS-I	Q-norm	0.311	0.013	0.574	0.008	0.781	0.003