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arXiv 0907.0101astro-ph.HEastro-ph.IM
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费米大天区望远镜的脉冲星模拟

Pulsar Simulations for the Fermi Large Area Telescope

M. Razzano, A. K. Harding, L. Baldini, R. Bellazzini, J. Bregeon, T. Burnett, J. Chiang, S. W. Digel, R. Dubois, M. W. Kuss, L. Latronico, J. E. McEnery, N. Omo… 展开作者

M. Razzano, A. K. Harding, L. Baldini, R. Bellazzini, J. Bregeon, T. Burnett, J. Chiang, S. W. Digel, R. Dubois, M. W. Kuss, L. Latronico, J. E. McEnery, N. Omodei, M. Pesce-Rollins, C. Sgro', G. Spandre, D. J. Thompson

摘要:

脉冲星是最近发射的费米天文台上的大面积望远镜(LAT)的主要目标之一。LAT将以前所未有的细节研究20 MeV至300 GeV之间的伽马射线宇宙。越来越多的伽马射线源被确定,但它们的发射机制还远未被理解。为了更好地研究和利用LAT的能力,脉冲星科学,一套新的详细的脉冲星模拟工具已经开发的LAT合作。本文介绍了脉冲星模拟器软件包PulsarSpectrum的结构。从理论计算或现象学考虑获得的光子能量和相位分布开始,产生伽马射线,并通过考虑重心效应和定时噪声等影响来确定它们到达航天器的时间。双星系统中的脉冲星也可以在给定的轨道参数下进行模拟。我们提出了如何模拟可以用于生成一组现实的伽马射线所观察到的LAT,重点是一些案例研究,显示脉冲星观测的LAT的性能。

英文摘要:

Pulsars are among the prime targets for the Large Area Telescope (LAT) aboard the recently launched Fermi observatory. The LAT will study the gamma-ray Universe between 20 MeV and 300 GeV with unprecedented detail. Increasing numbers of gamma-ray pulsars are being firmly identified, yet their emission mechanisms are far from being understood. To better investigate and exploit the LAT capabilities for pulsar science, a set of new detailed pulsar simulation tools have been developed within the LAT collaboration. The structure of the pulsar simulator package PulsarSpectrum is presented here. Starting from photon distributions in energy and phase obtained from theoretical calculations or phenomenological considerations, gamma rays are generated and their arrival times at the spacecraft are determined by taking into account effects such as barycentric effects and timing noise. Pulsars in binary systems also can be simulated given orbital parameters. We present how simulations can be used for generating a realistic set of gamma rays as observed by the LAT, focusing on some case studies that show the performance of the LAT for pulsar observations.

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。

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