Polarizabilities, light shifts and two-photon transition probabilities betweenJ= 0 states of the H2+and D2+molecular ions

2001 ◽  
Vol 34 (3) ◽  
pp. 491-507 ◽  
Author(s):  
L Hilico ◽  
N Billy ◽  
B Grémaud ◽  
D Delande
Keyword(s):  
Transition Probabilities ◽  
Molecular Ions ◽  
Two Photon ◽  
Photon Transition ◽  
Light Shifts

QED calculation of two-electron one-photon transition probabilities in He-like ions

2021 ◽  
Vol 104 (1) ◽  
Author(s):  
Konstantin N. Lyashchenko ◽  
Oleg Yu. Andreev ◽  
Deyang Yu
Keyword(s):  
Transition Probabilities ◽  
Photon Transition

scholarly journals Investigating Pulse Morphology in GX 1+4

1998 ◽  
Vol 15 (2) ◽  
pp. 217-221 ◽  
Author(s):  
Michelle C. Storey ◽  
J. G. Greenhill ◽  
T. Kotani
Keyword(s):  
Pulse Shape ◽  
Transition Probabilities ◽  
Low Frequency ◽  
Opening Angle ◽  
Emission Model ◽  
Two Photon ◽  
Maximum Value ◽  
Emission Transition ◽  
Cyclotron Emission ◽  
Theoretical Evidence

AbstractObservational and theoretical evidence points to the existence of an unusually high magnetic field on GX 1+4. The pulsar is thus an ideal laboratory for studying two-photon cyclotron emission, an important source of photons of frequency significantly less than the cyclotron frequency in X-ray pulsars. Low-frequency approximations to the two-photon cyclotron emission transition probabilities are derived. These are used to calculate the theoretical opening angle of the double-humped pulse shape predicted by the two-photon cyclotron emission model. The theoretical pulse shape, incorporating the effects of gravitational light bending, is compared with observations of GX 1+4. Observed light curves have opening angles consistent with the theoretically predicted maximum value.

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