arXivDaily arXiv每日学术速递 周一至周五更新
arXiv周末暂无论文更新,休息一下吧,周末愉快~~
arXiv 0812.0978astro-ph
收藏

从BL Lac 1 ES 0806+524中发现甚高能Gamma-Ray辐射

Discovery of Very High-Energy Gamma-Ray Radiation from the BL Lac 1ES 0806+524

VERITAS Collaboration, V. Acciari, E. Aliu, T. Arlen, M. Bautista, M. Beilicke, W. Benbow, M. Böttcher, S. M. Bradbury, J. H. Buckley, V. Bugaev, Y. Butt, K. By… 展开作者

VERITAS Collaboration, V. Acciari, E. Aliu, T. Arlen, M. Bautista, M. Beilicke, W. Benbow, M. Böttcher, S. M. Bradbury, J. H. Buckley, V. Bugaev, Y. Butt, K. Byrum, A. Cannon, O. Celik, A. Cesarini, Y. C. Chow, L. Ciupik, P. Cogan, P. Colin, W. Cui, R. Dickherber, C. Duke, T. Ergin, A. Falcone, S. J. Fegan, J. P. Finley, G. Finnegan, P. Fortin, L. Fortson, A. Furniss, D. Gall, K. Gibbs, G. H. Gillanders, J. Grube, R. Guenette, G. Gyuk, D. Hanna, E. Hays, J. Holder, D. Horan, C. M. Hui, T. B. Humensky, A. Imran, P. Kaaret, N. Karlsson, M. Kertzman, D. Kieda, J. Kildea, A. Konopelko, H. Krawczynski, F. Krennrich, M. J. Lang, S. LeBohec, G. Maier, A. McCann, M. McCutcheon, J. Millis, P. Moriarty, R. Mukherjee, T. Nagai, R. A. Ong, A. N. Otte, D. Pandel, J. S. Perkins, D. Petry, M. Pohl, J. Quinn, K. Ragan, L. C. Reyes, P. T. Reynolds, E. Roache, J. Rose, M. Schroedter, G. H. Sembroski, A. W. Smith, D. Steele, S. P. Swordy, M. Theiling, J. A. Toner, L. Valcarcel, A. Varlotta, V. V. Vassiliev, R. G. Wagner, S. P. Wakely, J. E. Ward, T. C. Weekes, A. Weinstein, R. J. White, D. A. Williams, S. Wissel, M. Wood, B. Zitzer

摘要:

2006年11月至2008年4月期间,VERITAS在甚高能伽马射线区观测到了红移z=0.138的高频率峰值BL-Lacertae天体\objectname{1ES 0806+524}。这些数据包括两台和三台望远镜的调试阶段,以及全部四台望远镜阵列的观测。检测到\objectname{1ES 0806+524}的统计学显著性为245个过量事件的6.3个标准差。几乎没有或没有可测量的变化,每月的时间scalesfound. The期间的光子光谱2007年11月至2008年4月可以用幂律与光子指数$3.6 \pm 1.0_{\mathrm{stat}} \pm 0.3_{\mathrm{sys}}$之间的$\sim$ 300 GeV和$\sim$ 700 GeV。300 GeV以上的积分通量是$(2.2\pm0.5_{\mathrm{stat}}\pm0.4_{\mathrm{sys}})\times10^{-12}\:\mathrm{cm}^{2}\:\mathrm{s}^{-1}$,相当于蟹状星云通量的1.8%。非同期的多波长观测与VHE数据相结合,产生一个宽带光谱能量分布,可以合理地描述使用同步自康普顿模型。

英文摘要:

The high-frequency-peaked BL-Lacertae object \objectname{1ES 0806+524}, at redshift z=0.138, was observed in the very-high-energy (VHE) gamma-ray regime by VERITAS between November 2006 and April 2008. These data encompass the two-, and three-telescope commissioning phases, as well as observations with the full four-telescope array. \objectname{1ES 0806+524} is detected with a statistical significance of 6.3 standard deviations from 245 excess events. Little or no measurable variability on monthly time scales is found. The photon spectrum for the period November 2007 to April 2008 can be characterized by a power law with photon index $3.6 \pm 1.0_{\mathrm{stat}} \pm 0.3_{\mathrm{sys}}$ between $\sim$300 GeV and $\sim$700 GeV. The integral flux above 300 GeV is $(2.2\pm0.5_{\mathrm{stat}}\pm0.4_{\mathrm{sys}})\times10^{-12}\:\mathrm{cm}^{2}\:\mathrm{s}^{-1}$ which corresponds to 1.8% of the Crab Nebula flux. Non contemporaneous multiwavelength observations are combined with the VHE data to produce a broadband spectral energy distribution that can be reasonably described using a synchrotron-self Compton model.

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。

↑