arXivDaily arXiv每日学术速递 周一至周五更新
北美退伍军人节(Veterans Day),12 日无更新
arXiv 1005.0035astro-ph.HEastro-ph.IM
收藏

用ANITA星载射电干涉仪观测超高能宇宙射线

Observation of Ultra-high-energy Cosmic Rays with the ANITA Balloon-borne Radio Interferometer

S. Hoover, J. Nam, P. W. Gorham, E. Grashorn, P. Allison, S. W. Barwick, J. J. Beatty, K. Belov, D. Z. Besson, W. R. Binns, C. Chen, P. Chen, J. M. Clem, A. Con… 展开作者

S. Hoover, J. Nam, P. W. Gorham, E. Grashorn, P. Allison, S. W. Barwick, J. J. Beatty, K. Belov, D. Z. Besson, W. R. Binns, C. Chen, P. Chen, J. M. Clem, A. Connolly, P. F. Dowkontt, M. A. DuVernois, R. C. Field, D. Goldstein, A. G. Vieregg, C. Hast, C. L. Hebert, M. H. Israel, A. Javaid, J. Kowalski, J. G. Learned, K. M. Liewer, J. T. Link, E. Lusczek, S. Matsuno, B. C. Mercurio, C. Miki, P. Miočinović, C. J. Naudet, J. Ng, R. J. Nichol, K. Palladino, K. Reil, A. Romero-Wolf, M. Rosen, L. Ruckman, D. Saltzberg, D. Seckel, G. S. Varner, D. Walz, F. Wu

摘要:

我们报告了16个平均能量为1.5 x 10^{19} eV的宇宙射线事件的观测结果,这些事件是通过宇宙射线空气簇射与南极地磁场相互作用产生的无线电脉冲进行的,这一过程被称为地球同步辐射。我们提出了第一个超宽带,远场测量的无线电频谱密度的地球同步辐射的范围从300-1000兆赫。发射在垂直于投影地磁场的平面中是100%线性偏振的。我们观察到的事件中有14个被认为是由于无线电波束从冰面反射而发生的相位反转,另外两个事件是直接从地平线上方看到的。

英文摘要:

We report the observation of sixteen cosmic ray events of mean energy of 1.5 x 10^{19} eV, via radio pulses originating from the interaction of the cosmic ray air shower with the Antarctic geomagnetic field, a process known as geosynchrotron emission. We present the first ultra-wideband, far-field measurements of the radio spectral density of geosynchrotron emission in the range from 300-1000 MHz. The emission is 100% linearly polarized in the plane perpendicular to the projected geomagnetic field. Fourteen of our observed events are seen to have a phase-inversion due to reflection of the radio beam off the ice surface, and two additional events are seen directly from above the horizon.

机构、总结、中文摘要均由AI分析而来,可能存在错误,请以论文正文为准。

↑