Measurement of very-high-energy diffuse gamma-ray emission from |b| < 5<sup>◦</sup> of the Galactic plane with LHAASO-WCDA
Issued Date
2024-09-27
Resource Type
eISSN
18248039
Scopus ID
2-s2.0-85212291608
Journal Title
Proceedings of Science
Volume
444
Rights Holder(s)
SCOPUS
Bibliographic Citation
Proceedings of Science Vol.444 (2024)
Suggested Citation
Li H., Zhang P., Hu S., Zha M., Guo Y., Yuan Q., Yao Z., Cao Z., Aharonian F., An Q., Axikegu, Bai Y.X., Bao Y.W., Bastieri D., Bi X.J., Bi Y.J., Cai J.T., Cao Q., Cao W.Y., Cao Z., Chang J., Chang J.F., Chen A.M., Chen E.S., Chen L., Chen L., Chen L., Chen M.J., Chen M.L., Chen Q.H., Chen S.H., Chen S.Z., Chen T.L., Chen Y., Cheng N., Cheng Y.D., Cui M.Y., Cui S.W., Cui X.H., Cui Y.D., Dai B.Z., Dai H.L., Dai Z.G., Danzengluobu, della Volpe D., Dong X.Q., Duan K.K., Fan J.H., Fan Y.Z., Fang J., Fang K., Feng C.F., Feng L., Feng S.H., Feng X.T., Feng Y.L., Gabici S., Gao B., Gao C.D., Gao L.Q., Gao Q., Gao W., Gao W.K., Ge M.M., Geng L.S., Giacinti G., Gong G.H., Gou Q.B., Gu M.H., Guo F.L., Guo X.L., Guo Y.Q., Guo Y.Y., Han Y.A., He H.H., He H.N., He J.Y., He X.B., He Y., Heller M., Hor Y.K., Hou B.W., Hou C., Hou X., Hu H.B., Hu Q., Hu S.C., Huang D.H., Huang T.Q., Huang W.J., Huang X.T., Huang X.Y., Huang Y., Huang Z.C., Ji X.L., Jia H.Y., Jia K., Jiang K., Jiang X.W., Jiang Z.J. Measurement of very-high-energy diffuse gamma-ray emission from |b| < 5<sup>◦</sup> of the Galactic plane with LHAASO-WCDA. Proceedings of Science Vol.444 (2024). Retrieved from: https://repository.li.mahidol.ac.th/handle/123456789/102515
Title
Measurement of very-high-energy diffuse gamma-ray emission from |b| < 5<sup>◦</sup> of the Galactic plane with LHAASO-WCDA
Author(s)
Li H.
Zhang P.
Hu S.
Zha M.
Guo Y.
Yuan Q.
Yao Z.
Cao Z.
Aharonian F.
An Q.
Axikegu
Bai Y.X.
Bao Y.W.
Bastieri D.
Bi X.J.
Bi Y.J.
Cai J.T.
Cao Q.
Cao W.Y.
Cao Z.
Chang J.
Chang J.F.
Chen A.M.
Chen E.S.
Chen L.
Chen L.
Chen L.
Chen M.J.
Chen M.L.
Chen Q.H.
Chen S.H.
Chen S.Z.
Chen T.L.
Chen Y.
Cheng N.
Cheng Y.D.
Cui M.Y.
Cui S.W.
Cui X.H.
Cui Y.D.
Dai B.Z.
Dai H.L.
Dai Z.G.
Danzengluobu
della Volpe D.
Dong X.Q.
Duan K.K.
Fan J.H.
Fan Y.Z.
Fang J.
Fang K.
Feng C.F.
Feng L.
Feng S.H.
Feng X.T.
Feng Y.L.
Gabici S.
Gao B.
Gao C.D.
Gao L.Q.
Gao Q.
Gao W.
Gao W.K.
Ge M.M.
Geng L.S.
Giacinti G.
Gong G.H.
Gou Q.B.
Gu M.H.
Guo F.L.
Guo X.L.
Guo Y.Q.
Guo Y.Y.
Han Y.A.
He H.H.
He H.N.
He J.Y.
He X.B.
He Y.
Heller M.
Hor Y.K.
Hou B.W.
Hou C.
Hou X.
Hu H.B.
Hu Q.
Hu S.C.
Huang D.H.
Huang T.Q.
Huang W.J.
Huang X.T.
Huang X.Y.
Huang Y.
Huang Z.C.
Ji X.L.
Jia H.Y.
Jia K.
Jiang K.
Jiang X.W.
Jiang Z.J.
Zhang P.
Hu S.
Zha M.
Guo Y.
Yuan Q.
Yao Z.
Cao Z.
Aharonian F.
An Q.
Axikegu
Bai Y.X.
Bao Y.W.
Bastieri D.
Bi X.J.
Bi Y.J.
Cai J.T.
Cao Q.
Cao W.Y.
Cao Z.
Chang J.
Chang J.F.
Chen A.M.
Chen E.S.
Chen L.
Chen L.
Chen L.
Chen M.J.
Chen M.L.
Chen Q.H.
Chen S.H.
Chen S.Z.
Chen T.L.
Chen Y.
Cheng N.
Cheng Y.D.
Cui M.Y.
Cui S.W.
Cui X.H.
Cui Y.D.
Dai B.Z.
Dai H.L.
Dai Z.G.
Danzengluobu
della Volpe D.
Dong X.Q.
Duan K.K.
Fan J.H.
Fan Y.Z.
Fang J.
Fang K.
Feng C.F.
Feng L.
Feng S.H.
Feng X.T.
Feng Y.L.
Gabici S.
Gao B.
Gao C.D.
Gao L.Q.
Gao Q.
Gao W.
Gao W.K.
Ge M.M.
Geng L.S.
Giacinti G.
Gong G.H.
Gou Q.B.
Gu M.H.
Guo F.L.
Guo X.L.
Guo Y.Q.
Guo Y.Y.
Han Y.A.
He H.H.
He H.N.
He J.Y.
He X.B.
He Y.
Heller M.
Hor Y.K.
Hou B.W.
Hou C.
Hou X.
Hu H.B.
Hu Q.
Hu S.C.
Huang D.H.
Huang T.Q.
Huang W.J.
Huang X.T.
Huang X.Y.
Huang Y.
Huang Z.C.
Ji X.L.
Jia H.Y.
Jia K.
Jiang K.
Jiang X.W.
Jiang Z.J.
Author's Affiliation
State Key Laboratory of Particle Detection & Electronics
Université Paris Cité
Yunnan Observatories
Nanjing University
Shanghai Astronomical Observatory Chinese Academy of Sciences
Shandong University
Yunnan University
Institute of High Energy Physics, Chinese Academy of Sciences
University of Chinese Academy of Sciences
Guangzhou University
Tsinghua University
Shanghai Jiao Tong University
Sun Yat-Sen University
University of Science and Technology of China
Zhengzhou University
Institiúid Ard-Lénn Bhaile Átha Cliath
National Astronomical Observatories Chinese Academy of Sciences
Max-Planck-Institut für Kernphysik
Southwest Jiaotong University
Purple Mountain Observatory Chinese Academy of Sciences
Université de Genève
Hebei Normal University
Tibet University
TIANFU Cosmic Ray Research Center
Université Paris Cité
Yunnan Observatories
Nanjing University
Shanghai Astronomical Observatory Chinese Academy of Sciences
Shandong University
Yunnan University
Institute of High Energy Physics, Chinese Academy of Sciences
University of Chinese Academy of Sciences
Guangzhou University
Tsinghua University
Shanghai Jiao Tong University
Sun Yat-Sen University
University of Science and Technology of China
Zhengzhou University
Institiúid Ard-Lénn Bhaile Átha Cliath
National Astronomical Observatories Chinese Academy of Sciences
Max-Planck-Institut für Kernphysik
Southwest Jiaotong University
Purple Mountain Observatory Chinese Academy of Sciences
Université de Genève
Hebei Normal University
Tibet University
TIANFU Cosmic Ray Research Center
Corresponding Author(s)
Other Contributor(s)
Abstract
Galactic diffuse gamma ray emission (GDE) is introduced by the galactic cosmic rays (CR) interacting with the interstellar medium (ISM) and radiation fields (ISRF). The GDE is a very important probe of CR propagation and interaction. Different from the measurements of CR particles in the local vicinity, the GDE enables a direct measurement of CR distribution in the Milky Way, and can thus provide much more important information of the production and propagation of CRs. LHAASO-WCDA, with an large area of 78000 m2, has an excellent ability to study VHE gamma-ray astronomy and GDE. In this proceeding, method of background estimation and some techniques to reduce the contaminant of resolved gamma-ray sources are briefly introduced. At last, diffuse emissions from the inner (15◦ < l < 125◦, |b| < 5◦) and outer (125◦ < l < 235◦, |b| < 5◦) Galactic plane are detected with 27.9σ and 11.9σ significance, respectively.