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A bounded source cannot emit a unipolar electromagnetic wave

Kwang-Je Kim·Kirk T. McDonald·Gennady V. Stupakov·Max S. Zolotorev
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Abstract

We show that a bounded source cannot produce a unipolar electromagnetic pulse. As a consequence, there are no three-dimensional electromagnetic solitons in vacuum.

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Kwang-Je Kim, Kirk T. McDonald, Gennady V. Stupakov, Max S. Zolotorev. 2000-03-31. A bounded source cannot emit a unipolar electromagnetic wave. https://arxiv.org/abs/physics/0003064

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