Wide Bandwidth Observations of Pulsars C, D, and J in 47 Tucanae

Zhang, Lei and Hobbs, George and Manchester, Richard N. and Li, Di and Wang, Pei and Dai, Shi and Wang, Jingbo and Kaczmarek, Jane F. and Cameron, Andrew D. and Toomey, Lawrence and Zhu, Weiwei and Zhi, Qijun and Miao, Chenchen and Yuan, Mao and Zhang, Songbo and Tao, Zhenzhao (2019) Wide Bandwidth Observations of Pulsars C, D, and J in 47 Tucanae. The Astrophysical Journal, 885 (2). L37. ISSN 2041-8213

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Abstract

We report the first wide-band observations of pulsars C, D, and J in the globular cluster 47 Tucanae (NGC 104) using the Ultra-Wideband Low (UWL) receiver system recently installed on the Parkes 64 m radio telescope. The wide frequency range of the UWL receiver (704–4032 MHz), along with the well-calibrated system, allowed us to obtain flux density measurements and polarization pulse profiles. The mean pulse profiles have significant linear and circular polarization, allowing for determination of the Faraday rotation measure for each pulsar. Precise measurements of the dispersion measures show a significant deviation in the value for pulsar D compared to earlier results. Searches for new pulsars in the cluster are ongoing and we have determined optimal bands for such searches using the Parkes UWL receiver system.

Item Type: Article
Subjects: OA Digital Library > Physics and Astronomy
Depositing User: Unnamed user with email support@oadigitallib.org
Date Deposited: 01 Jun 2023 06:57
Last Modified: 24 Jul 2024 09:16
URI: http://library.thepustakas.com/id/eprint/1327

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