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The effect of large fields on the lifetime of the forbidden lines seen in quasars

H Ezawa and M Leventhal

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Current models of quasars assume the presence of strong magnetic fields An ion moving in this magnetic field also experiences an electric field in its rest frame. Perturbation by this motional electric field mixes parity so that the forbidden magnetic-dipole transitions can possibly be turned into the much faster electric-dipole transitions. The magnetic field itself also mixes state changing the transition probabilities. It is found (i) that an electric field above about 108 V cm-1 is required to cause a significant enhancement of the forbidden line intensities in the quasar spectra and (ii) no such effect can be expected from the magnetic field.


PACS

98.54.Aj Quasars

95.30.Ky Atomic and molecular data, spectra, and spectral parameters (opacities, rotation constants, line identification, oscillator strengths, gf values, transition probabilities, etc.)

Subjects

Atomic and molecular physics

Astrophysics and astroparticles

Dates

Issue 11 (1 August 1975)



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