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arXiv · 2211.10050

High-Resolution Radio Study of the Dragonfly Nebula

Ruolan Jin·C. -Y. Ng·Mallory S. E. Roberts·Kwan-Lok Li
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Abstract

The Dragonfly Nebula (G75.2$+$0.1) powered by the young pulsar J2021$+$3651 is a rare pulsar wind nebula (PWN) that shows double tori and polar jets enclosed by a bow-shock structure in X-rays. We present new radio observations of this source taken with the Very Large Array (VLA) at 6 GHz. The radio PWN has an overall size about two times as large as the X-ray counterpart, consisting of a bright main body region in the southwest, a narrow and fainter bridge region in the northeast, and a dark gap in between. The nebula shows a radio spectrum much softer than that of a typical PWN. This could be resulting from compression by the ram pressure as the system travels mildly supersonically in the interstellar medium (ISM). Our polarization maps reveal a highly ordered and complex $B$-field structure. This can be explained by a toroidal field distorted by the pulsar motion.

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Ruolan Jin, C. -Y. Ng, Mallory S. E. Roberts, Kwan-Lok Li. 2022-11-18. High-Resolution Radio Study of the Dragonfly Nebula. https://doi.org/10.3847/1538-4357/aca656

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