Search for gamma-ray lines in the Galaxy with DAMPE

被引:0
|
作者
Xu Zun-Lei [1 ,2 ]
Shen Zhao-Qiang [1 ]
Duan Kai-Kai [1 ]
Li Xiang [1 ]
Mazziotta, M. N. [3 ]
机构
[1] Chinese Acad Sci, Key Lab Dark Matter & Space Astron, Purple Mt Observ, 10 Yuanhua Rd, Nanjing 210023, Peoples R China
[2] Univ Sci & Technol China, Sch Astron & Space Sci, 96 JinZhai Rd, Hefei 230026, Peoples R China
[3] Ist Nazl Fis Nucl, Sez Bari, I-70125 Bari, Italy
来源
37TH INTERNATIONAL COSMIC RAY CONFERENCE, ICRC2021 | 2022年
基金
瑞士国家科学基金会; 欧洲研究理事会; 中国国家自然科学基金;
关键词
D O I
暂无
中图分类号
P1 [天文学];
学科分类号
0704 ;
摘要
DArk Matter Particle Explorer (DAMPE) has a great potential in the search of monochromatic and sharp gamma-ray structures in GeV-TeV range thanks to its good energy resolution. In this work, we search for gamma-ray line structures using 5.0 years of DAMPE data. To improve the sensitivity, we develop two types of data sets and adopt the signal-to-noise ratio optimized regions of interest (ROIs) for different DM density profiles. No line signals or candidates, including those located at 133 GeV and 43 GeV, are found between 10 GeV and 300 GeV in the Galaxy. Therefore we calculate the 95% confidence level constraints on the velocity-averaged cross section for chi chi -> gamma gamma and the decay lifetime for chi -> gamma gamma with systematic uncertainties included. Our constraints on DM parameters are mostly comparable to the Fermi-LAT 5.8-yr results. The lower limit for DM decay lifetime below 100 GeV are better than that of Fermi-LAT.
引用
收藏
页数:9
相关论文
共 50 条
  • [31] Gamma-ray burst lines
    Briggs, MS
    GAMMA-RAY BURSTS: THE FIRST THREE MINUTES, 1999, 190 : 133 - 149
  • [32] DETECTION OF GAMMA-RAY LINES
    PETERSON, LE
    PHILOSOPHICAL TRANSACTIONS OF THE ROYAL SOCIETY A-MATHEMATICAL PHYSICAL AND ENGINEERING SCIENCES, 1981, 301 (1462): : 669 - 669
  • [33] SOLAR GAMMA-RAY LINES
    FORREST, DJ
    AIP CONFERENCE PROCEEDINGS, 1983, (101) : 3 - 14
  • [34] Search for gamma-ray spectral lines with the DArk Matter Particle Explorer
    Liang, Yun-Feng
    SCIENCE BULLETIN, 2022, 67 (07) : 679 - 684
  • [35] GAMMA-RAY LINES FROM THE GALACTIC-CENTER AND GAMMA-RAY TRANSIENTS
    RAMATY, R
    LEITER, D
    LINGENFELTER, RE
    ANNALS OF THE NEW YORK ACADEMY OF SCIENCES, 1981, 375 (DEC) : 338 - 346
  • [36] THE GALAXY POPULATION HOSTING GAMMA-RAY BURSTS
    Savaglio, S.
    Glazebrook, K.
    Le Borgne, D.
    ASTROPHYSICAL JOURNAL, 2009, 691 (01): : 182 - 211
  • [37] The host galaxy of the gamma-ray burst 971214
    Odewahn, SC
    Djorgovski, SG
    Kulkarni, SR
    Dickinson, M
    Frail, DA
    Ramaprakash, AN
    Bloom, JS
    Adelberger, KL
    Halpern, J
    Helfand, DJ
    Bahcall, J
    Goodrich, R
    Frontera, F
    Feroci, M
    Piro, L
    Costa, E
    ASTROPHYSICAL JOURNAL, 1998, 509 (01): : L5 - L8
  • [38] Gamma-ray image reconstruction of the Andromeda galaxy
    Armand, Celine
    Calore, Francesca
    PHYSICAL REVIEW D, 2021, 103 (08)
  • [39] PROBING GALAXY EVOLUTION WITH GAMMA-RAY BURSTS
    Tanvir, N. R.
    GAMMA-RAY BURSTS: 15 YEARS OF GRB AFTERGLOWS - PROGENITORS, ENVIRONMENTS AND HOST GALAXIES FROM THE NEARBY TO THE EARLY UNIVERSE, 2013, 61 : 421 - 425
  • [40] COMPTEL gamma-ray measurements of radioactivity in the galaxy
    Diehl, R
    Iyudin, A
    Oberlack, U
    Schonfelder, V
    Bloemen, H
    Dupraz, C
    Hermsen, W
    Knodlseder, J
    Ryan, J
    Winkler, C
    NUCLEAR PHYSICS A, 1997, 621 (1-2) : C79 - C82