X-ray Hardness

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

Hardness Ratios for NGC 4151, Obsid 335

Aimpoint HR₁ = (H-M)/(H+M) HR₂ = (M-S)/(M+S) HR₃ = (H-S)/(H+S)
ACIS-S 0.751 -0.200 0.648
ACIS-I 0.798 0.129 0.840

Quantiles for NGC 4151, Obsid 335

Aimpoint Quantiles 25 % 25 % Error 50 % 50 % Error 75 % 75 % Error
ACIS-S keV 1.394 0.011 3.570 0.010 4.884 0.009

Q-norm 0.142 0.001 0.425 0.001 0.595 0.001
ACIS-I keV 2.446 0.018 3.964 0.009 5.205 0.010

Q-norm 0.279 0.002 0.476 0.001 0.637 0.001

Observation Preview

Chandra Configuration for the Observation

Return to Search Page

X-Atlas Home

Hardness Ratios for NGC 4151, Obsid 335
Aimpoint	HR₁ = (H-M)/(H+M)	HR₂ = (M-S)/(M+S)	HR₃ = (H-S)/(H+S)
ACIS-S	0.751	-0.200	0.648
ACIS-I	0.798	0.129	0.840

Quantiles for NGC 4151, Obsid 335
Aimpoint	Quantiles	25 %	25 % Error	50 %	50 % Error	75 %	75 % Error
ACIS-S	keV	1.394	0.011	3.570	0.010	4.884	0.009
ACIS-S	Q-norm	0.142	0.001	0.425	0.001	0.595	0.001
ACIS-I	keV	2.446	0.018	3.964	0.009	5.205	0.010
ACIS-I	Q-norm	0.279	0.002	0.476	0.001	0.637	0.001