利用南极脉冲瞬态天线（ANITA）观测到的四个类似向上传播宇宙射线事件的特征。
Characteristics of Four Upward-Pointing Cosmic-Ray-like Events Observed with ANITA.
作者信息
Gorham P W, Nam J, Romero-Wolf A, Hoover S, Allison P, Banerjee O, Beatty J J, Belov K, Besson D Z, Binns W R, Bugaev V, Cao P, Chen C, Chen P, Clem J M, Connolly A, Dailey B, Deaconu C, Cremonesi L, Dowkontt P F, DuVernois M A, Field R C, Fox B D, Goldstein D, Gordon J, Hast C, Hebert C L, Hill B, Hughes K, Hupe R, Israel M H, Javaid A, Kowalski J, Lam J, Learned J G, Liewer K M, Liu T C, Link J T, Lusczek E, Matsuno S, Mercurio B C, Miki C, Miočinović P, Mottram M, Mulrey K, Naudet C J, Ng J, Nichol R J, Palladino K, Rauch B F, Reil K, Roberts J, Rosen M, Rotter B, Russell J, Ruckman L, Saltzberg D, Seckel D, Schoorlemmer H, Stafford S, Stockham J, Stockham M, Strutt B, Tatem K, Varner G S, Vieregg A G, Walz D, Wissel S A, Wu F
机构信息
Department of Physics and Astronomy, University of Hawaii, Manoa, Hawaii 96822, USA.
Department of Physics, Graduate Institute of Astrophysics and Leung Center for Cosmology and Particle Astrophysics, National Taiwan University, Taipei 10617, Taiwan.
出版信息
Phys Rev Lett. 2016 Aug 12;117(7):071101. doi: 10.1103/PhysRevLett.117.071101. Epub 2016 Aug 8.
We report on four radio-detected cosmic-ray (CR) or CR-like events observed with the Antarctic Impulsive Transient Antenna (ANITA), a NASA-sponsored long-duration balloon payload. Two of the four were previously identified as stratospheric CR air showers during the ANITA-I flight. A third stratospheric CR was detected during the ANITA-II flight. Here, we report on characteristics of these three unusual CR events, which develop nearly horizontally, 20-30 km above the surface of Earth. In addition, we report on a fourth steeply upward-pointing ANITA-I CR-like radio event which has characteristics consistent with a primary that emerged from the surface of the ice. This suggests a possible τ-lepton decay as the origin of this event, but such an interpretation would require significant suppression of the standard model τ-neutrino cross section.
我们报告了利用南极脉冲瞬态天线（ANITA）观测到的四个射电探测到的宇宙射线（CR）或类CR事件，ANITA是一个由美国国家航空航天局赞助的长续航气球搭载设备。这四个事件中的两个在ANITA - I飞行期间先前被确定为平流层CR空气簇射。在ANITA - II飞行期间探测到了第三个平流层CR。在此，我们报告这三个不同寻常的CR事件的特征，它们在地球表面上方20 - 30公里处几乎水平发展。此外，我们报告了第四个指向陡峭向上的ANITA - I类CR射电事件，其特征与从冰面出现的原初粒子一致。这表明该事件可能起源于τ轻子衰变，但这种解释需要对标准模型τ中微子截面进行显著抑制。
Zotero 插件