Observation of the γ-ray emission from W43 with LHAASO

LHAASO Collaboration

doi:10.1007/s11433-024-2477-9

Observation of the γ-ray emission from W43 with LHAASO

LHAASO Collaboration

Research output: Contribution to journal › Article › peer-review

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Abstract

In this paper, we report the detection of the very-high-energy (VHE, 100 GeV < E < 100 TeV) and ultra-high-energy (UHE, E > 100 TeV) γ-ray emissions from the direction of the young star-forming region W43, observed by the Large High Altitude Air Shower Observation (LHAASO). The extended γ-ray source was detected with a significance of ∼ 16σ by KM2A and ∼ 17σ by WCDA, respectively. The angular extension of this γ-ray source is about 0.5 degrees, corresponding to a physical size of about 50 pc. We discuss the origin of the γ-ray emission and possible cosmic ray acceleration in the W43 region using multi-wavelength data. Our findings suggest that W43 is likely another young star cluster capable of accelerating cosmic rays (CRs) to at least several hundred TeV.

Original language	English
Article number	279502
Journal	Science China: Physics, Mechanics and Astronomy
Volume	68
Issue number	7
DOIs	https://doi.org/10.1007/s11433-024-2477-9
State	Published - Jul 2025
Externally published	Yes

Keywords

cosmic rays
star formation region
γ-ray source

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10.1007/s11433-024-2477-9

Cite this

@article{ee493212680c499391f77a9031914850,

title = "Observation of the γ-ray emission from W43 with LHAASO",

abstract = "In this paper, we report the detection of the very-high-energy (VHE, 100 GeV < E < 100 TeV) and ultra-high-energy (UHE, E > 100 TeV) γ-ray emissions from the direction of the young star-forming region W43, observed by the Large High Altitude Air Shower Observation (LHAASO). The extended γ-ray source was detected with a significance of ∼ 16σ by KM2A and ∼ 17σ by WCDA, respectively. The angular extension of this γ-ray source is about 0.5 degrees, corresponding to a physical size of about 50 pc. We discuss the origin of the γ-ray emission and possible cosmic ray acceleration in the W43 region using multi-wavelength data. Our findings suggest that W43 is likely another young star cluster capable of accelerating cosmic rays (CRs) to at least several hundred TeV.",

keywords = "cosmic rays, star formation region, γ-ray source",

author = "\{LHAASO Collaboration\} and Zhen Cao and F. Aharonian and Axikegu and Bai, \{Y. X.\} and Bao, \{Y. W.\} and D. Bastieri and Bi, \{X. J.\} and Bi, \{Y. J.\} and W. Bian and Bukevich, \{A. V.\} and Q. Cao and Cao, \{W. Y.\} and Zhe Cao and J. Chang and Chang, \{J. F.\} and Chen, \{A. M.\} and Chen, \{E. S.\} and Chen, \{H. X.\} and Liang Chen and Lin Chen and Long Chen and Chen, \{M. J.\} and Chen, \{M. L.\} and Chen, \{Q. H.\} and S. Chen and Chen, \{S. H.\} and Chen, \{S. Z.\} and Chen, \{T. L.\} and Y. Chen and N. Cheng and Cheng, \{Y. D.\} and Chu, \{M. C.\} and Cui, \{M. Y.\} and Cui, \{S. W.\} and Cui, \{X. H.\} and Cui, \{Y. D.\} and Dai, \{B. Z.\} and Dai, \{H. L.\} and Dai, \{Z. G.\} and Danzengluobu and Dong, \{X. Q.\} and Duan, \{K. K.\} and Fan, \{J. H.\} and Fan, \{Y. Z.\} and J. Fang and Fang, \{J. H.\} and K. Fang and Feng, \{C. F.\} and H. Feng and Geng, \{L. S.\}",

note = "Publisher Copyright: {\textcopyright} Science China Press 2025.",

year = "2025",

month = jul,

doi = "10.1007/s11433-024-2477-9",

language = "英语",

volume = "68",

journal = "Science China: Physics, Mechanics and Astronomy",

issn = "1674-7348",

publisher = "Science China Press ",

number = "7",

}

TY - JOUR

T1 - Observation of the γ-ray emission from W43 with LHAASO

AU - LHAASO Collaboration

AU - Cao, Zhen

AU - Aharonian, F.

AU - Axikegu,

AU - Bai, Y. X.

AU - Bao, Y. W.

AU - Bastieri, D.

AU - Bi, X. J.

AU - Bi, Y. J.

AU - Bian, W.

AU - Bukevich, A. V.

AU - Cao, Q.

AU - Cao, W. Y.

AU - Cao, Zhe

AU - Chang, J.

AU - Chang, J. F.

AU - Chen, A. M.

AU - Chen, E. S.

AU - Chen, H. X.

AU - Chen, Liang

AU - Chen, Lin

AU - Chen, Long

AU - Chen, M. J.

AU - Chen, M. L.

AU - Chen, Q. H.

AU - Chen, S.

AU - Chen, S. H.

AU - Chen, S. Z.

AU - Chen, T. L.

AU - Chen, Y.

AU - Cheng, N.

AU - Cheng, Y. D.

AU - Chu, M. C.

AU - Cui, M. Y.

AU - Cui, S. W.

AU - Cui, X. H.

AU - Cui, Y. D.

AU - Dai, B. Z.

AU - Dai, H. L.

AU - Dai, Z. G.

AU - Danzengluobu,

AU - Dong, X. Q.

AU - Duan, K. K.

AU - Fan, J. H.

AU - Fan, Y. Z.

AU - Fang, J.

AU - Fang, J. H.

AU - Fang, K.

AU - Feng, C. F.

AU - Feng, H.

AU - Geng, L. S.

PY - 2025/7

Y1 - 2025/7

N2 - In this paper, we report the detection of the very-high-energy (VHE, 100 GeV < E < 100 TeV) and ultra-high-energy (UHE, E > 100 TeV) γ-ray emissions from the direction of the young star-forming region W43, observed by the Large High Altitude Air Shower Observation (LHAASO). The extended γ-ray source was detected with a significance of ∼ 16σ by KM2A and ∼ 17σ by WCDA, respectively. The angular extension of this γ-ray source is about 0.5 degrees, corresponding to a physical size of about 50 pc. We discuss the origin of the γ-ray emission and possible cosmic ray acceleration in the W43 region using multi-wavelength data. Our findings suggest that W43 is likely another young star cluster capable of accelerating cosmic rays (CRs) to at least several hundred TeV.

AB - In this paper, we report the detection of the very-high-energy (VHE, 100 GeV < E < 100 TeV) and ultra-high-energy (UHE, E > 100 TeV) γ-ray emissions from the direction of the young star-forming region W43, observed by the Large High Altitude Air Shower Observation (LHAASO). The extended γ-ray source was detected with a significance of ∼ 16σ by KM2A and ∼ 17σ by WCDA, respectively. The angular extension of this γ-ray source is about 0.5 degrees, corresponding to a physical size of about 50 pc. We discuss the origin of the γ-ray emission and possible cosmic ray acceleration in the W43 region using multi-wavelength data. Our findings suggest that W43 is likely another young star cluster capable of accelerating cosmic rays (CRs) to at least several hundred TeV.

KW - cosmic rays

KW - star formation region

KW - γ-ray source

UR - https://www.scopus.com/pages/publications/86000471713

U2 - 10.1007/s11433-024-2477-9

DO - 10.1007/s11433-024-2477-9

M3 - 文章

AN - SCOPUS:86000471713

SN - 1674-7348

VL - 68

JO - Science China: Physics, Mechanics and Astronomy

JF - Science China: Physics, Mechanics and Astronomy

IS - 7

M1 - 279502

ER -

Observation of the γ-ray emission from W43 with LHAASO

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