Searching Radio Signals from Two Magnetars and a High-magnetic Field Pulsar and the Serendipitous Discovery of a New Radio Pulsar PSR J1935+2200

被引：0

作者：

Lang Xie ^{[1
,2
]}

JLHan ^{[1
,2
,3
]}

ZLYang ^{[1
,2
]}

WCJing ^{[1
,2
]}

DJZhou ^{[1
,2
]}

WQSu ^{[1
,2
]}

Yi Yan ^{[1
,2
]}

Tao Wang ^{[1
,2
]}

NanNan Cai ^{[1
,2
]}

PFWang ^{[1
,2
,3
]}

Chen Wang ^{[1
,2
,3
]}

机构：

[1] National Astronomical Observatories, Chinese Academy of Sciences

[2] School of Astronomy and Space Sciences, University of Chinese Academy of Sciences

[3] National Key Laboratory for Radio Astronomy, Chinese Academy of

来源：

Research in Astronomy and Astrophysics | 2025年 / 25卷 / 01期

关键词：

D O I：

暂无

中图分类号：

P145.6 [脉冲星（中子星）];

学科分类号：

摘要：

Magnetars are slowly rotating, highly magnetized young neutron stars that can show transient radio phenomena for radio pulses and fast radio bursts. We conducted radio observations from two magnetars SGR J1935+2154 and3XMM J185246.6+003317 and a high-magnetic field pulsar PSR J1846–0258 using the Five-hundred-meter Aperture Spherical radio Telescope（FAST）. We performed single pulse and periodicity searches and did not detect radio signals from them. From the piggyback data recorded by other FAST telescope beams when we observed the magnetar SGR 1935+2154, we serendipitously discovered a new radio pulsar, PSR J1935+2200. We carried out the follow-up observations and obtained the timing solution based on these new observations and the archive FAST data. PSR J1935+2200 is an isolated old pulsar, with a spin period of 0.91 s, a spin-period derivative of9.19 × 10-15s s-1, and a characteristic age of 1.57 Myr. It is a weak pulsar with a flux density of 9.8 μJy at1.25 GHz. Discovery of a new pulsar from the long FAST observations of 30 minutes implies that there may be more weak older pulsars in the Galactic disk to be discovered.

引用

页码：110 / 115

页数：6