X-ray Hardness

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

Hardness Ratios for 4U 1822-37, Obsid 671

Aimpoint HR₁ = (H-M)/(H+M) HR₂ = (M-S)/(M+S) HR₃ = (H-S)/(H+S)
ACIS-S 0.624 0.379 0.811
ACIS-I 0.666 0.581 0.899

Quantiles for 4U 1822-37, Obsid 671

Aimpoint Quantiles 25 % 25 % Error 50 % 50 % Error 75 % 75 % Error
ACIS-S keV 1.497 0.000 2.767 0.006 4.285 0.002

Q-norm 0.155 0.000 0.320 0.001 0.518 0.000
ACIS-I keV 1.672 0.001 3.088 0.007 4.533 0.007

Q-norm 0.178 0.000 0.362 0.001 0.550 0.001

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Hardness Ratios for 4U 1822-37, Obsid 671
Aimpoint	HR₁ = (H-M)/(H+M)	HR₂ = (M-S)/(M+S)	HR₃ = (H-S)/(H+S)
ACIS-S	0.624	0.379	0.811
ACIS-I	0.666	0.581	0.899

Quantiles for 4U 1822-37, Obsid 671
Aimpoint	Quantiles	25 %	25 % Error	50 %	50 % Error	75 %	75 % Error
ACIS-S	keV	1.497	0.000	2.767	0.006	4.285	0.002
ACIS-S	Q-norm	0.155	0.000	0.320	0.001	0.518	0.000
ACIS-I	keV	1.672	0.001	3.088	0.007	4.533	0.007
ACIS-I	Q-norm	0.178	0.000	0.362	0.001	0.550	0.001