Likely Detection of GeV Gamma-Ray Emission from the Composite Supernova Remnant COMP G327.1+1.1 with Fermi-LAT

被引：4

作者：

Xiang, Yunchuan ^{[1
,2
]}

Xing, Yi ^{[3
]}

Jiang, Zejun ^{[1
,2
]}

机构：

[1] Yunnan Univ, Dept Astron, Kunming 650091, Yunnan, Peoples R China

[2] Key Lab Astroparticle Phys Yunnan Prov, Kunming 650091, Yunnan, Peoples R China

[3] Chinese Acad Sci, Shanghai Astron Observ, Key Lab Res Galaxies & Cosmol, 80 Nandan Rd, Shanghai 200030, Peoples R China

来源：

ASTROPHYSICAL JOURNAL | 2021年 / 912卷 / 02期

基金：

国家重点研发计划; 中国国家自然科学基金;

关键词：

PULSAR WIND NEBULA; EVOLUTION; CHANDRA;

D O I：

10.3847/1538-4357/abe624

中图分类号：

P1 [天文学];

学科分类号：

0704 ;

摘要：

We report the likely GeV gamma-ray emission from the composite supernova remnant (SNR) COMP G327.1+1.1 by analyzing similar to 12.2 yr of the Fermi Large Area Telescope (Fermi-LAT) Pass 8 data. We found the features of its spectrum and luminosity are well consistent with those of the observed COMP SNRs in the Milky Way. Moreover, the position of the source matches those in radio and TeV energy bands; we propose that the gamma-ray source is likely to be a GeV counterpart of COMP G327.1+1.1. Considering the case of the association from COMP G327.1+1.1 and the gamma-ray source, we interpreted its broadband spectral energy distribution (SED) by using three simple stationary models including one-zone and two-zone leptonic models and a one-zone leptohadronic model. We found that the simple two-zone model dominated by leptons can better explain its SED. More high-energy data are expected to firmly confirm the association between the gamma-ray source and COMP G327.1+1.1 in the future.

引用

页数：6

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