A 34.5 day quasi-periodic oscillation in γ-ray emission from the blazar PKS 2247–131
Since 2016 October, the active galaxy PKS 2247−131 has undergone a γ -ray outburst, which we studied using data obtained with the Fermi Gamma-ray Space Telescope. The emission arises from a relativistic jet in PKS 2247−131, as an optical spectrum only shows a few weak absorption lines, typical of th...
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| Published in | Nature communications Vol. 9; no. 1; pp. 4599 - 6 |
|---|---|
| Main Authors | , , , , , , , |
| Format | Journal Article |
| Language | English |
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Nature Publishing Group UK
02.11.2018
Nature Publishing Group Nature Portfolio |
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| Abstract | Since 2016 October, the active galaxy PKS 2247−131 has undergone a
γ
-ray outburst, which we studied using data obtained with the Fermi Gamma-ray Space Telescope. The emission arises from a relativistic jet in PKS 2247−131, as an optical spectrum only shows a few weak absorption lines, typical of the BL Lacertae sub-class of the blazar class of active galactic nuclei. Here we report a ≃34.5 day quasi-periodic oscillation (QPO) in the emission after the initial flux peak of the outburst. Compared to one-year time-scale QPOs, previously identified in blazars in Fermi energies, PKS 2247−131 exhibits the first clear case of a relatively short, month-like oscillation. We show that this QPO can be explained in terms of a helical structure in the jet, where the viewing angle to the dominant emission region in the jet undergoes periodic changes. The time scale of the QPO suggests the presence of binary supermassive black holes in PKS 2247−131.
PKS 2247–131 is an active galaxy that has been emitting gamma-ray flares since October 2016. Here, the authors used data obtained with the Fermi Gamma-ray Space Telescope to find that PKS 2247–131 presents a relatively short, month-like flux oscillation at gamma-ray energies of 0.1–300 GeV. |
|---|---|
| AbstractList | Since 2016 October, the active galaxy PKS 2247−131 has undergone a
γ
-ray outburst, which we studied using data obtained with the Fermi Gamma-ray Space Telescope. The emission arises from a relativistic jet in PKS 2247−131, as an optical spectrum only shows a few weak absorption lines, typical of the BL Lacertae sub-class of the blazar class of active galactic nuclei. Here we report a ≃34.5 day quasi-periodic oscillation (QPO) in the emission after the initial flux peak of the outburst. Compared to one-year time-scale QPOs, previously identified in blazars in Fermi energies, PKS 2247−131 exhibits the first clear case of a relatively short, month-like oscillation. We show that this QPO can be explained in terms of a helical structure in the jet, where the viewing angle to the dominant emission region in the jet undergoes periodic changes. The time scale of the QPO suggests the presence of binary supermassive black holes in PKS 2247−131.
PKS 2247–131 is an active galaxy that has been emitting gamma-ray flares since October 2016. Here, the authors used data obtained with the Fermi Gamma-ray Space Telescope to find that PKS 2247–131 presents a relatively short, month-like flux oscillation at gamma-ray energies of 0.1–300 GeV. Since 2016 October, the active galaxy PKS 2247-131 has undergone a γ-ray outburst, which we studied using data obtained with the Fermi Gamma-ray Space Telescope. The emission arises from a relativistic jet in PKS 2247-131, as an optical spectrum only shows a few weak absorption lines, typical of the BL Lacertae sub-class of the blazar class of active galactic nuclei. Here we report a ≃34.5 day quasi-periodic oscillation (QPO) in the emission after the initial flux peak of the outburst. Compared to one-year time-scale QPOs, previously identified in blazars in Fermi energies, PKS 2247-131 exhibits the first clear case of a relatively short, month-like oscillation. We show that this QPO can be explained in terms of a helical structure in the jet, where the viewing angle to the dominant emission region in the jet undergoes periodic changes. The time scale of the QPO suggests the presence of binary supermassive black holes in PKS 2247-131.Since 2016 October, the active galaxy PKS 2247-131 has undergone a γ-ray outburst, which we studied using data obtained with the Fermi Gamma-ray Space Telescope. The emission arises from a relativistic jet in PKS 2247-131, as an optical spectrum only shows a few weak absorption lines, typical of the BL Lacertae sub-class of the blazar class of active galactic nuclei. Here we report a ≃34.5 day quasi-periodic oscillation (QPO) in the emission after the initial flux peak of the outburst. Compared to one-year time-scale QPOs, previously identified in blazars in Fermi energies, PKS 2247-131 exhibits the first clear case of a relatively short, month-like oscillation. We show that this QPO can be explained in terms of a helical structure in the jet, where the viewing angle to the dominant emission region in the jet undergoes periodic changes. The time scale of the QPO suggests the presence of binary supermassive black holes in PKS 2247-131. Since 2016 October, the active galaxy PKS 2247-131 has undergone a γ-ray outburst, which we studied using data obtained with the Fermi Gamma-ray Space Telescope. The emission arises from a relativistic jet in PKS 2247-131, as an optical spectrum only shows a few weak absorption lines, typical of the BL Lacertae sub-class of the blazar class of active galactic nuclei. Here we report a ≃34.5 day quasi-periodic oscillation (QPO) in the emission after the initial flux peak of the outburst. Compared to one-year time-scale QPOs, previously identified in blazars in Fermi energies, PKS 2247-131 exhibits the first clear case of a relatively short, month-like oscillation. We show that this QPO can be explained in terms of a helical structure in the jet, where the viewing angle to the dominant emission region in the jet undergoes periodic changes. The time scale of the QPO suggests the presence of binary supermassive black holes in PKS 2247-131. Since 2016 October, the active galaxy PKS 2247−131 has undergone a γ -ray outburst, which we studied using data obtained with the Fermi Gamma-ray Space Telescope. The emission arises from a relativistic jet in PKS 2247−131, as an optical spectrum only shows a few weak absorption lines, typical of the BL Lacertae sub-class of the blazar class of active galactic nuclei. Here we report a ≃34.5 day quasi-periodic oscillation (QPO) in the emission after the initial flux peak of the outburst. Compared to one-year time-scale QPOs, previously identified in blazars in Fermi energies, PKS 2247−131 exhibits the first clear case of a relatively short, month-like oscillation. We show that this QPO can be explained in terms of a helical structure in the jet, where the viewing angle to the dominant emission region in the jet undergoes periodic changes. The time scale of the QPO suggests the presence of binary supermassive black holes in PKS 2247−131. Since 2016 October, the active galaxy PKS 2247−131 has undergone a γ-ray outburst, which we studied using data obtained with the Fermi Gamma-ray Space Telescope. The emission arises from a relativistic jet in PKS 2247−131, as an optical spectrum only shows a few weak absorption lines, typical of the BL Lacertae sub-class of the blazar class of active galactic nuclei. Here we report a ≃34.5 day quasi-periodic oscillation (QPO) in the emission after the initial flux peak of the outburst. Compared to one-year time-scale QPOs, previously identified in blazars in Fermi energies, PKS 2247−131 exhibits the first clear case of a relatively short, month-like oscillation. We show that this QPO can be explained in terms of a helical structure in the jet, where the viewing angle to the dominant emission region in the jet undergoes periodic changes. The time scale of the QPO suggests the presence of binary supermassive black holes in PKS 2247−131. PKS 2247–131 is an active galaxy that has been emitting gamma-ray flares since October 2016. Here, the authors used data obtained with the Fermi Gamma-ray Space Telescope to find that PKS 2247–131 presents a relatively short, month-like flux oscillation at gamma-ray energies of 0.1–300 GeV. |
| ArticleNumber | 4599 |
| Author | Wang, Zhongxiang Morrell, Nidia Chen, Liang Wiita, Paul J. Vadakkumthani, Jithesh Zhou, Jianeng Zhang, Pengfei Zhang, Jujia |
| Author_xml | – sequence: 1 givenname: Jianeng surname: Zhou fullname: Zhou, Jianeng organization: Shanghai Astronomical Observatory, Chinese Academy of Sciences – sequence: 2 givenname: Zhongxiang surname: Wang fullname: Wang, Zhongxiang email: wangzx@shao.ac.cn organization: Shanghai Astronomical Observatory, Chinese Academy of Sciences – sequence: 3 givenname: Liang surname: Chen fullname: Chen, Liang organization: Shanghai Astronomical Observatory, Chinese Academy of Sciences, University of Chinese Academy of Sciences – sequence: 4 givenname: Paul J. surname: Wiita fullname: Wiita, Paul J. organization: The College of New Jersey – sequence: 5 givenname: Jithesh orcidid: 0000-0002-6449-9643 surname: Vadakkumthani fullname: Vadakkumthani, Jithesh organization: Inter-University Centre for Astronomy and Astrophysics – sequence: 6 givenname: Nidia surname: Morrell fullname: Morrell, Nidia organization: Las Campanas Observatory, Carnegie Observatories – sequence: 7 givenname: Pengfei surname: Zhang fullname: Zhang, Pengfei organization: Purple Mountain Observatory, Chinese Academy of Sciences – sequence: 8 givenname: Jujia surname: Zhang fullname: Zhang, Jujia organization: Yunnan Observatories, Chinese Academy of Sciences, Key Laboratory for the Structure and Evolution of Celestial Objects, Chinese Academy of Sciences, Center for Astronomical Mega-Science, Chinese Academy of Sciences |
| BackLink | https://www.ncbi.nlm.nih.gov/pubmed/30389945$$D View this record in MEDLINE/PubMed |
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| Score | 2.5600755 |
| Snippet | Since 2016 October, the active galaxy PKS 2247−131 has undergone a
γ
-ray outburst, which we studied using data obtained with the Fermi Gamma-ray Space... Since 2016 October, the active galaxy PKS 2247-131 has undergone a γ-ray outburst, which we studied using data obtained with the Fermi Gamma-ray Space... Since 2016 October, the active galaxy PKS 2247−131 has undergone a γ-ray outburst, which we studied using data obtained with the Fermi Gamma-ray Space... PKS 2247–131 is an active galaxy that has been emitting gamma-ray flares since October 2016. Here, the authors used data obtained with the Fermi Gamma-ray... |
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| SourceType | Open Website Open Access Repository Aggregation Database Index Database Enrichment Source Publisher |
| StartPage | 4599 |
| SubjectTerms | 639/33/34/4127 639/33/34/864 Active galactic nuclei Active galaxies Blazars Emission Emissions Fermi Gamma-ray Space Telescope Galaxies Gamma rays Humanities and Social Sciences multidisciplinary Quasi-Periodic Oscillations Science Science (multidisciplinary) Space telescopes Supermassive black holes |
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| Title | A 34.5 day quasi-periodic oscillation in γ-ray emission from the blazar PKS 2247–131 |
| URI | https://link.springer.com/article/10.1038/s41467-018-07103-2 https://www.ncbi.nlm.nih.gov/pubmed/30389945 https://www.proquest.com/docview/2128535313 https://www.proquest.com/docview/2129534943 https://pubmed.ncbi.nlm.nih.gov/PMC6214961 https://doaj.org/article/be4286c0ba6f427ca63dc38ab71a1fbc |
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