High-Resolution Radio Study of the Dragonfly Nebula
Abstract
The Dragonfly Nebula (G75.20.1) powered by the young pulsar J20213651 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 -field structure. This can be explained by a toroidal field distorted by the pulsar motion.
Cite
@article{arxiv.2211.10050,
title = {High-Resolution Radio Study of the Dragonfly Nebula},
author = {Ruolan Jin and C. -Y. Ng and Mallory S. E. Roberts and Kwan-Lok Li},
journal= {arXiv preprint arXiv:2211.10050},
year = {2023}
}
Comments
12 pages, 11 figures; submitted to ApJ