GeV Gamma-Ray Emission from Pulsar Wind Nebula HESS J1356-645 with Fermi-Large Area Telescope
HESS J1356-645 is considered to be a pulsar wind nebula (PWN) associated with the pulsar PSR J1357-6429. We reanalyze the GeV gamma-ray emission in the direction of HESS J1356-645 with more than 13 yr of Fermi-Large Area Telescope data. The extended gamma-ray emission above 5 GeV is found to be spat...
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| Format: | Article |
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IOP Publishing
2023-01-01
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| Series: | The Astrophysical Journal |
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| Online Access: | https://doi.org/10.3847/1538-4357/aca96b |
| _version_ | 1797697234185224192 |
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| author | Xi Liu Xiaolei Guo Yuliang Xin Fengrong Zhu Siming Liu |
| author_facet | Xi Liu Xiaolei Guo Yuliang Xin Fengrong Zhu Siming Liu |
| author_sort | Xi Liu |
| collection | DOAJ |
| description | HESS J1356-645 is considered to be a pulsar wind nebula (PWN) associated with the pulsar PSR J1357-6429. We reanalyze the GeV gamma-ray emission in the direction of HESS J1356-645 with more than 13 yr of Fermi-Large Area Telescope data. The extended gamma-ray emission above 5 GeV is found to be spatially coincident with HESS J1356-645. The spectrum in the energy range of 1 GeV–1 TeV can be described by a power law with an index of Γ = 1.51 ± 0.10. The broadband spectrum of HESS J1356-645 can be reproduced by a leptonic model with a broken power-law electronic spectrum. In addition, we found evidence that the morphology of the GeV emission from HESS J1356-645 varies with energy; a behavior that is similar to that of the PWN Vela-X. More broadband observations will be helpful to study the energy-dependent characteristics of HESS J1356-645. |
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| format | Article |
| id | doaj.art-0dc8533540ae40c398b6c4497e1ba16d |
| institution | Directory Open Access Journal |
| issn | 1538-4357 |
| language | English |
| last_indexed | 2024-03-12T03:37:25Z |
| publishDate | 2023-01-01 |
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| spelling | doaj.art-0dc8533540ae40c398b6c4497e1ba16d2023-09-03T13:07:50ZengIOP PublishingThe Astrophysical Journal1538-43572023-01-01942210510.3847/1538-4357/aca96bGeV Gamma-Ray Emission from Pulsar Wind Nebula HESS J1356-645 with Fermi-Large Area TelescopeXi Liu0Xiaolei Guo1Yuliang Xin2https://orcid.org/0000-0001-5135-5942Fengrong Zhu3Siming Liu4https://orcid.org/0000-0003-1039-9521School of Physical Science and Technology, Southwest Jiaotong University , Chengdu 610031, People’s Republic of China ; xlguo@swjtu.edu.cnSchool of Physical Science and Technology, Southwest Jiaotong University , Chengdu 610031, People’s Republic of China ; xlguo@swjtu.edu.cnSchool of Physical Science and Technology, Southwest Jiaotong University , Chengdu 610031, People’s Republic of China ; xlguo@swjtu.edu.cnSchool of Physical Science and Technology, Southwest Jiaotong University , Chengdu 610031, People’s Republic of China ; xlguo@swjtu.edu.cnSchool of Physical Science and Technology, Southwest Jiaotong University , Chengdu 610031, People’s Republic of China ; xlguo@swjtu.edu.cnHESS J1356-645 is considered to be a pulsar wind nebula (PWN) associated with the pulsar PSR J1357-6429. We reanalyze the GeV gamma-ray emission in the direction of HESS J1356-645 with more than 13 yr of Fermi-Large Area Telescope data. The extended gamma-ray emission above 5 GeV is found to be spatially coincident with HESS J1356-645. The spectrum in the energy range of 1 GeV–1 TeV can be described by a power law with an index of Γ = 1.51 ± 0.10. The broadband spectrum of HESS J1356-645 can be reproduced by a leptonic model with a broken power-law electronic spectrum. In addition, we found evidence that the morphology of the GeV emission from HESS J1356-645 varies with energy; a behavior that is similar to that of the PWN Vela-X. More broadband observations will be helpful to study the energy-dependent characteristics of HESS J1356-645.https://doi.org/10.3847/1538-4357/aca96bPulsar wind nebulae |
| spellingShingle | Xi Liu Xiaolei Guo Yuliang Xin Fengrong Zhu Siming Liu GeV Gamma-Ray Emission from Pulsar Wind Nebula HESS J1356-645 with Fermi-Large Area Telescope The Astrophysical Journal Pulsar wind nebulae |
| title | GeV Gamma-Ray Emission from Pulsar Wind Nebula HESS J1356-645 with Fermi-Large Area Telescope |
| title_full | GeV Gamma-Ray Emission from Pulsar Wind Nebula HESS J1356-645 with Fermi-Large Area Telescope |
| title_fullStr | GeV Gamma-Ray Emission from Pulsar Wind Nebula HESS J1356-645 with Fermi-Large Area Telescope |
| title_full_unstemmed | GeV Gamma-Ray Emission from Pulsar Wind Nebula HESS J1356-645 with Fermi-Large Area Telescope |
| title_short | GeV Gamma-Ray Emission from Pulsar Wind Nebula HESS J1356-645 with Fermi-Large Area Telescope |
| title_sort | gev gamma ray emission from pulsar wind nebula hess j1356 645 with fermi large area telescope |
| topic | Pulsar wind nebulae |
| url | https://doi.org/10.3847/1538-4357/aca96b |
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