Abstract
In the accompanying letter1, we have reported the discovery of two nonthermal radio sources lying near the galactic plane, which have surface brightness distributions radically different from those of the supernova remnants (SNRs) with which they had been formerly classified. Their marked axial symmetry, associated compact com ponents, steep surface-brightness gradients and polarization structure are unlike those seen in any previously-identified class of radio emitters. Here, we discuss some of their physical properties (distances, ages, energetics) and describe briefly a scenario in which the observed radiation is produced by electrons generated in a relativistic outflow from high-velocity accreting binary systems.
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Helfand, D., Becker, R. Origin of the new axisymmetric radio sources. Nature 313, 118–119 (1985). https://doi.org/10.1038/313118a0
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DOI: https://doi.org/10.1038/313118a0
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