Energy Intepretation
0.286 keV C I K edge
0.35450 keV C v 1s-3p 34.9728 A (ref. in Kaastra10)
0.36750 keV C VI Ly α 1s-2p 33.7360 A (part of ISM hot phase) (ref. in Kaastra10)
0.385 keV C V edge
0.392 keV Fe XIV edge
0.395 keV Ar L XII
0.39628 keV N i 1s-2p 31.2857 A (part of ISM neutral phase) (ref. in Kaastra10)
0.400 keV N I K edge
0.400 keV Si L XII
0.420 keV N VI Forbidden
0.42150 keV N v 1s-2p 29.414 A (ref. in Kaastra10)
0.425 keV Ar L XIII
0.426 keV N VI Intercomb
0.43067 keV N vi 1s-2p 28.7875 A (ref. in Kaastra10)
0.431 keV N VI Resonance
0.43554 keV C vi Ly β 1s-3p 28.4656 A (ref. in Kaastra10)
0.445 keV Ar L XI
0.457 keV Fe XV edge
0.45936 keV C vi 1s-4p 26.9898 A Lyman-gamma???? (ref. in Kaastra10)
0.489 keV Fe XVI edge
0.490 keV C VI RRC
0.50030 keV N VII Ly α 1s-2p 24.7810 A (ref. in Kaastra10)
0.524 keV O I Kα
0.52732 keV O i 1s-2p 23.5113 A (part of ISM neutral phase) (ref. in Kaastra10)
0.532 keV O II Kα
0.534 keV O I K edge (for pure O, I think)
0.543 keV O I K edge (for oxidizing O, I think)
0.544 keV O IV Kβ
0.552 keV N VI edge
0.55422 keV O V Kα 1s-2p 22.3700 A (ref. in Kaastra10)
0.561 keV z: O VII Forbidden (He α) (photo-ioniz.)
0.56305 keV O vi 1s-2p 22.0194 A (part of ISM hot phase) (ref. in Kaastra10)
0.568 keV y: O VII Intercomb (He α)
0.569 keV x: O VII Intercomb (He α)
0.574 keV w: O VII Resonance (He α) (collis.-ioniz.)
0.57393 keV O vii 1s-2p 21.6019 A (part of ISM hot phase) (ref. in Kaastra10)
0.65360 keV O VIII Ly α 1s-2p 18.9689 A (part of ISM hot phase) (ref. in Kaastra10)
0.66554 keV O VII β (He-β) 18.6284 A (part of ISM hot phase) (ref. in Kaastra10)
0.667 keV N VII edge or RRC
0.677 keV F I Kα line
0.687 keV F I K edge (An RGS instrumental feature)
0.692 keV Fe L XIX
0.697 keV F I K edge
0.69776 keV O VII gamma 1s-4p 17.7683 A (ref. in Kaastra10)
0.703 keV Fe L edge for FeXOY
0.705 keV Fe I L α
0.707 keV Fe I L3 2p3/2 edge (oxidized or metallic Fe)(transitions from 2p3/2 level)
0.711 keV Fe I L3 2p3/2 edge (for pure Fe, as opposed to oxidized or metallic Fe)
0.713 keV O VII delta
0.71269 keV O vii 1s-5p 17.3960 A (ref. in Kaastra10)
0.715 keV FeXOY line (weak compared to 0.702 keV feature)
0.719 keV Fe I L β
0.720 keV Fe I L2 2p1/2 edge (oxidized or metallic Fe) (transitions from 2p1/2 level)
0.723 keV Fe I L2 2p1/2 edge (for pure Fe, as opposed to oxidized or metallic Fe)
0.7257, 0.7273 keV Fe XVII 3s-2p (3P1 and 3P2) (kT \sim 0.2-0.9 keV)
0.729 keV Ca XIX line
0.7389 keV Fe XVII 3s-2p (1P1) (kT \sim 0.2-0.9 keV)
0.739 keV O VII RRC (or O VII edge)
0.771 keV Fe L XVIII 3s-2p
0.774 keV O VIII Ly β
0.77459 keV O viii 1s-3p 16.0059 A (ref. in Kaastra10)
0.8124 keV Fe L XVII 3d-2p (3D1) (kT \sim 0.2-0.9 keV)
0.81694 keV O viii 1s-4p 15.1762 A (ref. in Kaastra10) O VIII gamma????
0.819 keV Fe L XVII
0.8257 keV Fe L XVII 3d-2p (1P1) (Due to collisional-, not photo-, ioniz.) (kT \sim 0.2-0.9 keV)
0.82576 keV Fe xvii 2p-3d 15.0140 A (part of ISM hot phase) (ref. in Kaastra10)
0.83654 keV O VIII Ly delta 1s-5p 14.8205 A (ref. in Kaastra10)
0.845 keV Fe I L1 2s (oxidized or metallic Fe) (due to transitions from 2s level)
0.849 keV Ne I Kα
0.854 keV Ni L3 edge
0.865 keV Fe XVIII 3d-2p
0.867 keV Ne I K edge
0.871 keV O VIII RRC (or O VIII edge)
0.871 keV Ni L2 edge
0.87267 keV Fe xviii 2p-3d 14.207 A (ref. in Kaastra10)
0.8727 keV Fe L (kT \sim 0.5-1.2)
0.89750 keV Ne vii 1s-2p 13.8140 A (ref. in Kaastra10)
0.898 keV Fe XIX
0.905 keV Ne IX Forbidden (He α)
0.90801 keV Ne viii 1s-2p 13.654 A (ref. in Kaastra10)
0.909 keV Fe XIX
0.915 keV Ne IX Intercomb (He α)
0.922 keV Ne IX Resonance (He α)
0.913-0.926 keV Fe L XIX 3d-2p
0.91728 keV Fe L xix 2p-3d 13.516 A (ref. in Kaastra10)
0.9174 keV Fe L XIX 3d-2p (kT \sim 0.9 keV)
0.9174, 0.9179, 0.9186 Fe L XIX 3d-2p (kT \sim 1.1 keV)
0.92199 keV Ne ix 1s-2p 13.4470 A (part of ISM hot phase) (ref. in Kaastra10)
0.946 keV Fe XX
0.956 keV Fe XX
0.960 keV Fe XX
0.965 keV Fe L XX 3d-2p
0.967 keV Fe XX
0.986 keV Fe XX
1.008 keV Ni L1 edge
1.00928 keV Fe xxi 2p-3d 12.2840 A (ref. in Kaastra10)
1.0095 keV Fe L XXI 3d-2p (kT \sim 1-3 keV)
1.02171 keV Ne X Ly α 1s-2p 12.1346 A (part of ISM hot phase) (ref. in Kaastra10)
1.049 keV Fe L XXI (kT \sim 1-3 keV)
1.0534,1.0563 keV Fe L XXII
1.07398 keV Ne K IX β 1s-3p 11.5440 A (ref. in Kaastra10)
1.077 keV Fe L XXII
1.085 keV Fe L XXII
1.085 keV Fe L XXIII
1.095 keV Fe L XXIII
1.096 keV Fe L XXIII
1.1093 keV Fe L XXIII ???? (from apec)
1.196 keV Ne IX edge (or RRC)
1.254 keV Mg I K α
1.262 keV Fe XVII edge
1.302 keV Mg I K β
1.303 keV Mg I K edge
1.331 keV Mg XI Forbidden (He α)
1.343 keV Mg XI Intercomb (He α)
1.344 keV Mg XI Intercomb (He α)
1.35219 keV Mg XI Resonance (He α) 1s-2p 9.1688 A (ref. in Kaastra10)
1.362 keV Ne X edge
1.362 keV Fe XVIII edge
1.469 keV Fe XIX edge
1.473 keV Mg XII Ly α
1.487 keV Al I Kα
1.557 keV Al I Kβ
1.56 keV Al I K edge
1.576 keV Fe XX edge
1.58 keV Mg XI K β
1.598 keV Al XII K
1.689 keV Fe XXI edge
1.727 keV Al XIII K
1.740 keV Si I K α
1.761 keV Mg XI edge
1.799 keV Fe XXII edge
1.836 keV Si I K β
1.839 keV Si XIII Forbidden
1.84 keV Si I K edge
1.854 keV Si XIII Intercomb
1.855 keV Si XIII Intercomb
1.865 keV Si XIII Resonance
1.959 keV Fe XXIII edge
1.962 keV Mg XII edge
2.005 keV Si XIV Ly α
2.014 keV P I Kα
2.046 keV Fe XIV edge
2.123 keV Au I Mα1
2.308 keV S I K α
2.430 keV S XV Forbidden
2.438 keV Si XIII edge
2.447-9 keV S XV Intercomb
2.460 keV S XV Resonance
2.464 keV S I K β
2.472 keV S I K edge
2.620 keV S XVI Ly α
2.673 keV Si XIV edge
2.956 keV Ar I K α
3.191 keV Ar I K β
3.206 keV Ar I K edge
3.224 keV S XV edge
3.494 keV S XVI edge
3.690 keV Ca I K α
3.861 keV Ca XIX Forbidden
3.882-4 keV Ca XIX Intercomb
3.902 keV Ca XIX Resonance
4.012 keV Ca 1 K β
4.038 keV Ca I K edge
4.100 keV Ca XX Ly α
4.121 keV Ar XVII edge
4.426 keV Ar XVIII edge
5.129 keV Ca XIX edge
5.470 keV Ca XX edge
5.888 keV Mn I K α2 (1/2 int. of α11)
5.895 keV Mn I K α (avg.)
5.899 keV Mn I K α1
~6.24 keV Fe I K α Compton Shoulder
6.391 keV Fe I K α2 (1/2 int. of α1) (K--L2 transition)
6.400 keV Fe I K α (average)
6.404 keV Fe I K α1(K--L3 transition)
6.490 keV Mn I K β
6.62 keV Fe XXIII absorption
6.637 keV Fe XXV z forbidden emission
6.66 keV Fe XIV absorption
6.668 keV Fe XXV y intercombination emission
6.682 keV Fe XXV x intercombination emission
6.697 keV Fe XXV w resonance absorption
6.700 keV Fe XXV w resonance emission
6.966 keV Fe XXVI Ly α resonance
7.056 keV Fe I Kβ (K--M transition)
7.112 keV Fe I K edge
7.47 keV Ni I Kα
7.87 keV Fe XXV Kβ
8.05 keV Cu I Kα
8.251 keV Fe XXVI Ly Kβ
8.333 keV Ni I K edge
8.828 keV Fe XXV edge
9.278 keV Fe XXVI edge
9.628 keV Au Lα2
9.713 keV Au Lα1
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Most info from http://xdb.lbl.gov/
K,L,M fluorescent emission lines: http://xdb.lbl.gov/Section1/Sec_1-2.html
Photo-ioniz. cross sections: http://xdb.lbl.gov/Section1/Sec_1-5.html
Ionization (edge) energies for few-ion atoms; H/He-like lines: http://xdb.lbl.gov/Section1/Sec_1-8.html
See also http://www.med.harvard.edu/jpnm/physics/refs/xrayemis.html (neutral emission lines)
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He-like line diagnostics: Usually (to first order), photo-ionization results in
a strong forbidden line and a weak resonance line. Collisional = opposite.
Resonance 1s2 1S0 - 1s2p1P1
Intercomb: 1s2 1S0 - 1s2p3P1
Intercomb: 1s2 1S0 - 1s2p3P2
Forb: 1s2 1S0 - 1s2s3S1.
Porquet & Dubau 2000: http://adsabs.harvard.edu/abs/2000A%26AS..143..495P:
R-ratio = f/(i1+i2) Sensitive to density (in some ranges)
G-ratio = (f+i1+i2)/r Sensitive to electron temperature (in some ranges)
But resonance lines can also be
photo-excited (e.g., Sako et al 2000),
so G-ratio may not be reliable
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"ref. in Kaastra10" = lines + references from J Kaastra + 2011 A+A 534 A37, Table 1.