X-ray Hardness

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

Hardness Ratios for H 1821+643, Obsid 1599

Aimpoint HR₁ = (H-M)/(H+M) HR₂ = (M-S)/(M+S) HR₃ = (H-S)/(H+S)
ACIS-S -0.007 0.009 0.003
ACIS-I 0.053 0.302 0.349

Quantiles for H 1821+643, Obsid 1599

Aimpoint Quantiles 25 % 25 % Error 50 % 50 % Error 75 % 75 % Error
ACIS-S keV 0.796 0.005 1.161 0.000 1.774 0.006

Q-norm 0.064 0.001 0.112 0.000 0.191 0.001
ACIS-I keV 0.971 0.004 1.365 0.005 2.008 0.007

Q-norm 0.087 0.000 0.138 0.001 0.222 0.001

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Hardness Ratios for H 1821+643, Obsid 1599
Aimpoint	HR₁ = (H-M)/(H+M)	HR₂ = (M-S)/(M+S)	HR₃ = (H-S)/(H+S)
ACIS-S	-0.007	0.009	0.003
ACIS-I	0.053	0.302	0.349

Quantiles for H 1821+643, Obsid 1599
Aimpoint	Quantiles	25 %	25 % Error	50 %	50 % Error	75 %	75 % Error
ACIS-S	keV	0.796	0.005	1.161	0.000	1.774	0.006
ACIS-S	Q-norm	0.064	0.001	0.112	0.000	0.191	0.001
ACIS-I	keV	0.971	0.004	1.365	0.005	2.008	0.007
ACIS-I	Q-norm	0.087	0.000	0.138	0.001	0.222	0.001