Letter to the Editor

A deep X-ray spectral imaging of the bow-shock pulsar wind nebula associated with PSR B1929+10

¹ Department of Astronomy and Space Science, Chungnam National University, Daejeon 34134, Korea
e-mail: huichungyue@gmail.com
² Department of Physics, UNIST, Ulsan 44919, Korea
³ Institute of Particle physics and Astronomy, Huazhong University of Science and Technology, Huazhong, PR China

Received: 4 March 2020
Accepted: 24 April 2020

Abstract

In this work, we study the X-ray bow-shock nebula powered by the mature pulsar PSR B1929+10 using data from XMM-Newton, with an effective exposure of ∼300 ks, offering the deepest investigation of this system thus far. We found the X-ray axial outflow extends as long as ∼8 arc minute behind the proper motion direction, which is a factor of two longer than the result reported in the previous study. Furthermore, we found evidence of two faint lateral outflows extending laterally with respect to the proper motion. We also found indications of spectral hardening along the axial outflow, suggesting that certain acceleration processes might occur along this feature.