High-Resolution Radio Study of the Dragonfly Nebula by Ruolan Jin et al. on Monday 21 November
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.
arXiv: http://arxiv.org/abs/http://arxiv.org/abs/2211.10050v1
