On the unusually large spatial extent of the TeV nebula HESS J1825-137
- Deep observation of the High Energy Stereoscopic System (HESS) on the most extended pulsar wind nebula HESS J1825-137 reveals an enhanced energy-dependent morphology, providing useful information on the particle transport mechanism in the nebula. We find that the energy-dependent morphology is consistent with a diffusion-dominated transport of electrons/positrons. It provides an alternative possible interpretation for the unusually large spatial extent (i.e. greater than or similar to 100 pc) of the nebula, which could then be attributed to the diffusion of escaping electrons/positrons from a compact plerion. The influence of various model parameters on the energy-dependent extent of the nebula is studied in the diffusion-dominated scenario. We also show that the energy-dependent morphology of the nebula may also be used to study the spin-down history of the pulsar.
Author details: | Ruoyu LiuORCiDGND, Huirong YanGND |
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DOI: | https://doi.org/10.1093/mnras/staa911 |
ISSN: | 0035-8711 |
ISSN: | 1365-2966 |
Title of parent work (English): | Monthly notices of the Royal Astronomical Society |
Subtitle (English): | implication from the energy-dependent morphology |
Publisher: | Oxford Univ. Press |
Place of publishing: | Oxford |
Publication type: | Article |
Language: | English |
Date of first publication: | 2020/04/13 |
Publication year: | 2020 |
Release date: | 2023/10/10 |
Tag: | HESS J1825-137 gamma-rays; diffusion-radation mechanisms; general; individual; non-thermal-pulsars |
Volume: | 494 |
Issue: | 2 |
Number of pages: | 10 |
First page: | 2618 |
Last Page: | 2627 |
Organizational units: | Mathematisch-Naturwissenschaftliche Fakultät / Institut für Physik und Astronomie |
DDC classification: | 5 Naturwissenschaften und Mathematik / 52 Astronomie / 520 Astronomie und zugeordnete Wissenschaften |
Peer review: | Referiert |
Publishing method: | Open Access / Green Open-Access |