X-ray Hardness

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

Hardness Ratios for 1E1740.7-2942, Obsid 2491

Aimpoint HR₁ = (H-M)/(H+M) HR₂ = (M-S)/(M+S) HR₃ = (H-S)/(H+S)
ACIS-S 0.998 0.502 0.999
ACIS-I 0.998 -0.090 0.998

Quantiles for 1E1740.7-2942, Obsid 2491

Aimpoint Quantiles 25 % 25 % Error 50 % 50 % Error 75 % 75 % Error
ACIS-S keV 3.964 0.004 4.752 0.004 5.628 0.007

Q-norm 0.476 0.001 0.578 0.001 0.692 0.001
ACIS-I keV 4.008 0.004 4.811 0.005 5.701 0.007

Q-norm 0.482 0.000 0.586 0.001 0.701 0.001

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Hardness Ratios for 1E1740.7-2942, Obsid 2491
Aimpoint	HR₁ = (H-M)/(H+M)	HR₂ = (M-S)/(M+S)	HR₃ = (H-S)/(H+S)
ACIS-S	0.998	0.502	0.999
ACIS-I	0.998	-0.090	0.998

Quantiles for 1E1740.7-2942, Obsid 2491
Aimpoint	Quantiles	25 %	25 % Error	50 %	50 % Error	75 %	75 % Error
ACIS-S	keV	3.964	0.004	4.752	0.004	5.628	0.007
ACIS-S	Q-norm	0.476	0.001	0.578	0.001	0.692	0.001
ACIS-I	keV	4.008	0.004	4.811	0.005	5.701	0.007
ACIS-I	Q-norm	0.482	0.000	0.586	0.001	0.701	0.001