23 citations · 146 across the 16 of their papers we have counts for
17 papers · 1 filter
Identification of a Large-Scale Diffuse Gamma-Ray Structure in the Southern Galactic Hemisphere
Zhen Xie, Xiaoyuan Huang, Bing Liu +1
We identify and characterize a large-scale diffuse gamma-ray structure in the Southern Galactic Hemisphere using 17 yr of Fermi-LAT data. An energy-dependent likelihood analysis, i…
Fermi-LAT Detected Gamma-ray Emission Likely Associated with SNR Kes 78
Yun-Zhi Shen, Yang Chen, Xiao Zhang +1
We have analyzed the GeV gamma-ray emission in the region of the supernova remnant (SNR) Kes 78 using 16.7 years of Fermi-LAT observations and found that the catalog sources…
Nuclear de-excitation line emissions from giant molecular clouds
Zhaodong Shi, Bing Liu, Rui-zhi Yang
Understanding how cosmic rays (CRs) propagate within the giant molecular clouds (GMCs) is critical for studying the dynamics and chemical processes inside the clouds. The flux of l…
Diffuse gamma-ray emission around the Rosette Nebula
Jiahao Liu, Bing Liu, Ruizhi Yang
The Rosette Nebula is a young stellar cluster and molecular cloud complex, located at the edge of the southern shell of a middle-aged SNR Monoceros Loop (G205.5+0.5). We revisited…
New estimation of the nuclear de-excitation line emission from the supernova remnant Cassiopeia A
Bing Liu, Rui-zhi Yang, Xin-yu He +1
MeV nuclear de-excitation lines serve as a unique tool to study low-energy cosmic rays (CRs), containing both spectral and elemental information of the interacting material. In thi…
Cosmic ray density variations in nearby giant molecular clouds
Jiahao Liu, Bing Liu, Ruizhi Yang
In this paper, we analyzed 12 years of Fermi LAT gamma-ray data towards three nearby giant molecular clouds (GMCs), i.e., R~CrA, Chamaeleon, and Lupus. We calibrated the gas column…
Effective Shielding of 10 GeV Cosmic Rays from Dense Molecular Clumps
Rui-zhi Yang, Guang-Xing Li, Emma de Oña Wilhelmi +3
The density of cosmic rays inside molecular clouds determines the ionization rate in the dense cores where stars form. It is also one of the drivers of astrochemistry leading to th…
Gamma-ray observation towards the young massive star cluster NGC 6618 in the M17 region
Bing Liu, Rui-zhi Yang, Zhiwei Chen
Young massive clusters have been established as a new population of gamma-ray sources and potential cosmic ray (CR) accelerators. In this paper, we report the detection of gamma-ra…
GeV Gamma-ray Emission and Molecular Clouds towards Supernova Remnant G35.60.4 and the TeV Source HESS J1858+020
Xiao Zhang, Yang Chen, Fa-xiang Zheng +3
It is difficult to distinguish hadronic process from the leptonic one in -ray observation, which is however crucial in revealing the origin of cosmic rays. As an endeavor in the…
A hard spectrum diffuse gamma-ray component associated with HII gas in the Galactic plane
Bing Liu, Rui-zhi Yang
We analyzed 12-year Fermi Large Area Telescope gamma-ray data in the inner Galaxy centered at (l=30, b=0) and (l=330, b=0). We found signifi…
On the surface brightness radial profile of the extended -ray sources
Rui-zhi Yang, Bing Liu
The morphology of the extended -ray source is governed by the propagation process of parent relativistic particles. In this paper, we investigate the surface brightness radial p…
The low cosmic-ray density in Polaris Flare
Zhi-wei Cui, Rui-zhi Yang, Bing Liu
We reported the gamma-ray observation towards the giant molecular cloud Polaris Flare. Together with the dust column density map, we derived the cosmic ray density and spectrum in…
Nuclear de-excitation lines as a probe of low-energy cosmic rays
Bing Liu, Rui-zhi Yang, Felix Aharonian
Low-energy cosmic rays (LECRs) contribute substantially to the energy balance of the interstellar medium. They play also significant role in the heating and chemistry of gas, and,…
The GeV emission in the field of the star-forming region W30 revisited
Bing Liu, Rui-zhi Yang, Xiao-na Sun +2
We present a detailed study of the gamma-ray emission from the direction of the star-forming region W30 based on a decade of the Fermi Large Area Telescope data in the 0.3-300 GeV…
Tentative evidence of spatially extended GeV emission from SS433/W50
Xiao-Na Sun, Rui-Zhi Yang, Bing Liu +2
We analyze 10 years of Fermi-LAT data towards the SS433/W50 region. With the latest source catalog and diffuse background models, the gamma-ray excess from SS433/W50 is detected wi…
A Study of Fermi-LAT GeV gamma-ray Emission towards the Magnetar-harboring Supernova Remnant Kesteven 73 and Its Molecular Environment
Bing Liu, Yang Chen, Xiao Zhang +5
We report our independent GeV gamma-ray study of the young shell-type supernova remnant (SNR) Kes 73 which harbors a central magnetar, and CO-line millimeter observations toward th…
GeV γ-ray Emission Detected by Fermi-LAT Probably Associated with the Thermal Composite Supernova Remnant Kesteven 41 in a Molecular Environment
Bing Liu, Yang Chen, Xiao Zhang +3
Hadron emission from supernova remnant (SNR)-molecular cloud (MC) association systems has been widely regarded as a probe of the shock-accelerated cosmic-ray protons. Here, we repo…