Discovery and timing of pulsar J2016$+$3711 in supernova remnant CTB 87 with FAST
| Title: | Discovery and timing of pulsar J2016$+$3711 in supernova remnant CTB 87 with FAST |
|---|---|
| Authors: | Liu, Qian-Cheng, Zhong, Wen-Juan, Chen, Yang, Wang, Pei, Zhou, Ping, Yue, You-Ling, Li, Di |
| Publication Year: | 2024 |
| Collection: | Astrophysics |
| Subject Terms: | Astrophysics - High Energy Astrophysical Phenomena |
| More Details: | We report on our discovery of the radio pulsar, PSR J2016$+$3711, in supernova remnant (SNR) CTB 87, with a $\sim10.8\sigma$ significance of pulses, which confirms the compact nature of the X-ray point source in CTB 87. It is the first pulsar discovered in SNRs using Five-hundred-meter Aperture Spherical radio Telescope (FAST). Its integrated radio pulse profile can be well described by a single component, with a width at 50% of the peak flux density of about 28.1$^\circ$ and an effective width of about 32.2$^\circ$. The mean flux density at 1.25 GHz is estimated to be about 15.5$\mu$Jy. Combined with the non-detection of the radio pulse at lower frequencies, the radio spectral index of the pulsar is constrained to be $\lesssim 2.3$. We also present the timing solution based on 28 follow-up FAST observations. Our results reveal a period of 50.81 ms, period derivative of $7.2\times 10^{-14}$ s s$^{-1}$, and dispersion measure of 428 pc cm$^{-3}$. The strength of the equatorial surface magnetic dipole magnetic field is inferred to be about $1.9\times10^{12}$ G. Using the ephemeris obtained from the radio observations, we searched Fermi-LAT data for gamma-ray pulsations but detected no pulsed signal. We also searched for radio pulses with FAST toward the X-ray counterpart of the gamma-ray binary HESS J1832$-$093 proximate to SNR G22.7$-$00.2 but found no signal. Comment: 7 pages, 5 figures, accepted for publication in MNRAS |
| Document Type: | Working Paper |
| Access URL: | http://arxiv.org/abs/2402.00578 |
| Accession Number: | edsarx.2402.00578 |
| Database: | arXiv |
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| Items | – Name: Title Label: Title Group: Ti Data: Discovery and timing of pulsar J2016$+$3711 in supernova remnant CTB 87 with FAST – Name: Author Label: Authors Group: Au Data: <searchLink fieldCode="AR" term="%22Liu%2C+Qian-Cheng%22">Liu, Qian-Cheng</searchLink><br /><searchLink fieldCode="AR" term="%22Zhong%2C+Wen-Juan%22">Zhong, Wen-Juan</searchLink><br /><searchLink fieldCode="AR" term="%22Chen%2C+Yang%22">Chen, Yang</searchLink><br /><searchLink fieldCode="AR" term="%22Wang%2C+Pei%22">Wang, Pei</searchLink><br /><searchLink fieldCode="AR" term="%22Zhou%2C+Ping%22">Zhou, Ping</searchLink><br /><searchLink fieldCode="AR" term="%22Yue%2C+You-Ling%22">Yue, You-Ling</searchLink><br /><searchLink fieldCode="AR" term="%22Li%2C+Di%22">Li, Di</searchLink> – Name: DatePubCY Label: Publication Year Group: Date Data: 2024 – Name: Subset Label: Collection Group: HoldingsInfo Data: Astrophysics – Name: Subject Label: Subject Terms Group: Su Data: <searchLink fieldCode="DE" term="%22Astrophysics+-+High+Energy+Astrophysical+Phenomena%22">Astrophysics - High Energy Astrophysical Phenomena</searchLink> – Name: Abstract Label: Description Group: Ab Data: We report on our discovery of the radio pulsar, PSR J2016$+$3711, in supernova remnant (SNR) CTB 87, with a $\sim10.8\sigma$ significance of pulses, which confirms the compact nature of the X-ray point source in CTB 87. It is the first pulsar discovered in SNRs using Five-hundred-meter Aperture Spherical radio Telescope (FAST). Its integrated radio pulse profile can be well described by a single component, with a width at 50% of the peak flux density of about 28.1$^\circ$ and an effective width of about 32.2$^\circ$. The mean flux density at 1.25 GHz is estimated to be about 15.5$\mu$Jy. Combined with the non-detection of the radio pulse at lower frequencies, the radio spectral index of the pulsar is constrained to be $\lesssim 2.3$. We also present the timing solution based on 28 follow-up FAST observations. Our results reveal a period of 50.81 ms, period derivative of $7.2\times 10^{-14}$ s s$^{-1}$, and dispersion measure of 428 pc cm$^{-3}$. The strength of the equatorial surface magnetic dipole magnetic field is inferred to be about $1.9\times10^{12}$ G. Using the ephemeris obtained from the radio observations, we searched Fermi-LAT data for gamma-ray pulsations but detected no pulsed signal. We also searched for radio pulses with FAST toward the X-ray counterpart of the gamma-ray binary HESS J1832$-$093 proximate to SNR G22.7$-$00.2 but found no signal.<br />Comment: 7 pages, 5 figures, accepted for publication in MNRAS – Name: TypeDocument Label: Document Type Group: TypDoc Data: Working Paper – Name: URL Label: Access URL Group: URL Data: <link linkTarget="URL" linkTerm="http://arxiv.org/abs/2402.00578" linkWindow="_blank">http://arxiv.org/abs/2402.00578</link> – Name: AN Label: Accession Number Group: ID Data: edsarx.2402.00578 |
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| RecordInfo | BibRecord: BibEntity: Subjects: – SubjectFull: Astrophysics - High Energy Astrophysical Phenomena Type: general Titles: – TitleFull: Discovery and timing of pulsar J2016$+$3711 in supernova remnant CTB 87 with FAST Type: main BibRelationships: HasContributorRelationships: – PersonEntity: Name: NameFull: Liu, Qian-Cheng – PersonEntity: Name: NameFull: Zhong, Wen-Juan – PersonEntity: Name: NameFull: Chen, Yang – PersonEntity: Name: NameFull: Wang, Pei – PersonEntity: Name: NameFull: Zhou, Ping – PersonEntity: Name: NameFull: Yue, You-Ling – PersonEntity: Name: NameFull: Li, Di IsPartOfRelationships: – BibEntity: Dates: – D: 01 M: 02 Type: published Y: 2024 |
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