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| DOI | 10.1126/science.aan4880 |
| Extended gamma-ray sources around pulsars constrain the origin of the positron flux at Earth | |
| Abeysekara, A. U.1; Albert, A.2; Alfaro, R.3; Alvarez, C.4; Alvarez, J. D.5; Arceo, R.4; Arteaga-Velazquez, J. C.5; Rojas, D. Avila3; Solares, H. A. Ayala6; Barber, A. S.1; Bautista-Elivar, N.7; Becerril, A.3; Belmont-Moreno, E.3; BenZvi, S. Y.8; Berley, D.9; Bernal, A.10; Braun, J.11; Brisbois, C.6; Caballero-Mora, K. S.4; Capistran, T.12; Carraminana, A.12; Casanova, S.13,14; Castillo, M.5; Cotti, U.5; Cotzomi, J.15; de Leon, S. Coutino15; De Leon, C.15; De la Fuente, E.16; Dingus, B. L.2; DuVernois, M. A.11; Diaz-Velez, J. C.16; Ellsworth, R. W.17; Engel, K.9; Enriquez-Rivera, O.18; Fiorino, D. W.9; Fraija, N.10; Garcia-Gonzalez, J. A.3; Garfias, F.10; Gerhardt, M.6; Munoz, A. Gonzalez3; Gonzalez, M. M.10; Goodman, J. A.9; Hampel-Arias, Z.11; Harding, J. P.2; Hernandez, S.3; Hernandez-Almada, A.3; Hinton, J.14; Hona, B.6; Hui, C. M.19; Huntemeyer, P.6; Iriarte, A.10; Jardin-Blicq, A.14; Joshi, V.14; Kaufmann, S.4; Kieda, D.1; Lara, A.18; Lauer, R. J.20; Lee, W. H.10; Lennarz, D.21; Vargas, H. Leon3; Linnemann, J. T.22; Longinotti, A. L.12; Raya, G. Luis7; Luna-Garcia, R.23; Lopez-Coto, R.14; Malone, K.24; Marinelli, S. S.22; Martinez, O.15; Martinez-Castellanos, I.9; Martinez-Castro, J.23; Martinez-Huerta, H.25; Matthews, J. A.20; Miranda-Romagnoli, P.26; Moreno, E.15; Mostafa, M.24; Nellen, L.27; Newbold, M.1; Nisa, M. U.8; Noriega-Papaqui, R.26; Pelayo, R.23; Pretz, J.24; Perez-Perez, E. G.7; Ren, Z.20; Rho, C. D.8; Riviere, C.9; Rosa-Gonzalez, D.12; Rosenberg, M.24; Ruiz-Velasco, E.3; Salazar, H.15; Greus, F. Salesa13; Sandoval, A.3; Schneider, M.28; Schoorlemmer, H.14; Sinnis, G.2; Smith, A. J.9; Springer, R. W.1; Surajbali, P.14; Taboada, I.21; Tibolla, O.4; Tollefson, K.22; Torres, I.12; Ukwatta, T. N.2; Vianello, G.29; Weisgarber, T.11; Westerhoff, S.11; Wisher, I. G.11; Wood, J.11; Yapici, T.22; Yodh, G.30; Younk, P. W.2; Zepeda, A.4,25; Zhou, H.2; Guo, F.2; Hahn, J.14; Li, H.2; Zhang, H.2 | |
| 2017-11-17 | |
| 发表期刊 | SCIENCE
 |
| ISSN | 0036-8075 |
| EISSN | 1095-9203 |
| 出版年 | 2017 |
| 卷号 | 358期号:6365页码:911-914 |
| 文章类型 | Article |
| 语种 | 英语 |
| 国家 | USA; Mexico; Poland; Germany |
| 英文摘要 | The unexpectedly high flux of cosmic-ray positrons detected at Earth may originate from nearby astrophysical sources, dark matter, or unknown processes of cosmic-ray secondary production. We report the detection, using the High-Altitude Water Cherenkov Observatory (HAWC), of extended tera-electron volt gamma-ray emission coincident with the locations of two nearby middle-aged pulsars (Geminga and PSR B0656 + 14). The HAWC observations demonstrate that these pulsars are indeed local sources of accelerated leptons, but the measured tera-electron volt emission profile constrains the diffusion of particles away from these sources to be much slower than previously assumed. We demonstrate that the leptons emitted by these objects are therefore unlikely to be the origin of the excess positrons, which may have a more exotic origin. |
| 领域 | 地球科学 ; 气候变化 ; 资源环境 |
| 收录类别 | SCI-E |
| WOS记录号 | WOS:000415293000043 |
| WOS类目 | Multidisciplinary Sciences |
| WOS研究方向 | Science & Technology - Other Topics |
| URL | 查看原文 |
| 引用统计 | |
| 文献类型 | 期刊论文 |
| 条目标识符 | http://119.78.100.173/C666/handle/2XK7JSWQ/197351 |
| 专题 | 地球科学 资源环境科学 气候变化 |
| 作者单位 | 1.Univ Utah, Dept Phys & Astron, Salt Lake City, UT 84112 USA; 2.Los Alamos Natl Lab, Los Alamos, NM USA; 3.Univ Nacl Autonoma Mexico, Inst Fis, Mexico City, DF, Mexico; 4.Univ Autonoma Chiapas, Tuxtla Gutierrez, Chiapas, Mexico; 5.Univ Michoacana, Morelia, Michoacan, Mexico; 6.Michigan Technol Univ, Dept Phys, Houghton, MI 49931 USA; 7.Univ Politecn Pachuca, Pachuca, Hidalgo, Mexico; 8.Univ Rochester, Dept Phys & Astron, Rochester, NY 14627 USA; 9.Univ Maryland, Dept Phys, College Pk, MD 20742 USA; 10.Univ Nacl Autonoma Mexico, Inst Astron, Mexico City, DF, Mexico; 11.Univ Wisconsin Madison, Dept Phys, Madison, WI USA; 12.Inst Nacl Astrofis Opt Elect, Puebla, Mexico; 13.Polish Acad Sci, Inst Nucl Phys, Krakow, Poland; 14.Max Planck Inst Nucl Phys, Heidelberg, Germany; 15.Benemerita Univ Autonoma Puebla, Fac Ciencias Fis Matemat, Puebla, Mexico; 16.Univ Guadalajara, Ctr Univ Ciencias Exactas & Ingn, Dept Fis, Guadalajara, Mexico; 17.George Mason Univ, Sch Phys Astron & Computat Sci, Fairfax, VA 22030 USA; 18.Univ Nacl Autonoma Mexico, Inst Geofis, Mexico City, DF, Mexico; 19.NASA Marshall Space Flight Ctr Huntsville, Astrophys Off, Huntsville, AL USA; 20.Univ New Mexico, Dept Phys & Astron, Albuquerque, NM 87131 USA; 21.Georgia Inst Technol, Sch Phys & Ctr Relativist Astrophys, Atlanta, GA 30332 USA; 22.Michigan State Univ, Dept Phys & Astron, E Lansing, MI 48824 USA; 23.Inst Politecn Nacl, Ctr Invest Computac, Mexico City, DF, Mexico; 24.Penn State Univ, Dept Phys, 104 Davey Lab, University Pk, PA 16802 USA; 25.Ctr Invest & Estudios Avanzados, Phys Dept, Mexico City, DF, Mexico; 26.Univ Autonoma Estado Hidalgo, Pachuca, Mexico; 27.Univ Nacl Autonoma Mexico, Inst Ciencias Nucl, Mexico City, DF, Mexico; 28.Univ Calif Santa Cruz, Santa Cruz Inst Particle Phys, Santa Cruz, CA 95064 USA; 29.Stanford Univ, Hansen Expt Phys Lab, Stanford, CA 94305 USA; 30.Univ Calif Irvine, Dept Phys & Astron, Irvine, CA USA |
| 推荐引用方式 GB/T 7714 | Abeysekara, A. U.,Albert, A.,Alfaro, R.,et al. Extended gamma-ray sources around pulsars constrain the origin of the positron flux at Earth[J]. SCIENCE,2017,358(6365):911-914. |
| APA | Abeysekara, A. U..,Albert, A..,Alfaro, R..,Alvarez, C..,Alvarez, J. D..,...&Zhang, H..(2017).Extended gamma-ray sources around pulsars constrain the origin of the positron flux at Earth.SCIENCE,358(6365),911-914. |
| MLA | Abeysekara, A. U.,et al."Extended gamma-ray sources around pulsars constrain the origin of the positron flux at Earth".SCIENCE 358.6365(2017):911-914. |
| 条目包含的文件 | 条目无相关文件。 | |||||
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