20 pages, 12 figures; Review article accepted for publication in Advances in Astronomy, special issue 'Robotic Astronomy (Hindawi Publishing Corporation).
发表信息:
Advances in Astronomy, vol. 2010, Article ID 718468, 14 pages, 2010
We present a status report on the study of gamma-ray bursts (GRB) in the era of rapid follow-up using the world's largest robotic optical telescopes - the 2-m Liverpool and Faulkes telescopes. Within the context of key unsolved issues in GRB physics, we describe (1) our innovative software that allows real-time automatic analysis and interpretation of GRB light curves, (2) the novel instrumentation that allows unique types of observations (in particular, early time polarisation measurements) and (3) the key science questions and discoveries to which robotic observations are ideally suited, concluding with a summary of current understanding of GRB physics provided by combining rapid optical observations with simultaneous observations at other wavelengths.
When galaxies burst: enhanced shot-noise for line-intensity mapping in the JWST era
Ben-Gurion University of the Negev(内盖夫本-古里安大学);The University of Texas at Austin(德克萨斯大学奥斯汀分校);Cosmic Frontier Center, The University of Texas at Austin(德克萨斯大学奥斯汀分校宇宙前沿中心);Tel-Aviv University(特拉维夫大学)
High Precision Analyses of Lyman alpha Damping Wing of Gamma-Ray Bursts in the Reionization Era: On the Controversial Results from GRB 130606A at z = 5.91
Swift GRB 130606 A在z = 5.91处的空前明亮的余辉给我们提供了一个通过高精度分析Ly α吸收的红阻尼翼来探测再电离时代的独特机会,但不同望远镜观测到的光谱对星系际介质(IGM)中中性氢分数(fHI)的限制是矛盾的。在这里,我们研究的起源,这种差异进行分析的频谱VLT与我们自己的分析代码以前用于适应斯巴鲁频谱。虽然VLT团队没有报告使用VLT光谱的IGM HI的证据,但我们证实了我们之前的结果,即更喜欢非零IGM HI(当IGM HI扩展到GRB红移时,最佳拟合f_HI ~ 0.06)。不含IGM HI的模型的VLT光谱拟合残差显示出与斯巴鲁光谱相同的系统趋势。我们认为,两个小组之间的差异可能是由于配件所采用的波长范围不同;我们的波长范围比VLT团队的更宽,而且我们避免了深Ly α吸收的最短波长范围(lambda_obs < 8426 A),因为这一区域主要由宿主星系中的HI控制,并且宿主星系HI速度分布的系统不确定性很大。我们还研究了这些结果的灵敏度,通过Ly α截面公式,从经典的洛伦兹函数到最近的一个考虑到完全量子力学散射。研究发现,对非零IGM HI的偏好对截面公式的选择是稳健的,但它在定量上是不可忽略的,因此在未来的分析中应该小心。
Fast Radio Bursts in the Era of the Vera C. Rubin Observatory's Legacy Survey of Space and Time
International Centre for Radio Astronomy Research, Curtin University(国际无线电天文研究中心,科廷大学);Instituto de Física, Universidade Federal do Rio Grande do Sul (UFRGS)(南里奥格兰德联邦大学物理研究所);Australia Telescope National Facility, CSIRO Space & Astronomy(澳大利亚望远镜国家设施,CSIRO空间与天文学部);Sydney Institute for Astronomy, School of Physics, The University of Sydney(悉尼大学物理学院悉尼天体物理研究所);Department of Physics, University of Washington(华盛顿大学物理系);Centre for Astrophysics and Supercomputing, Swinburne University of Technology(斯威本科技大学天体物理学与超级计算中心);Kavli IPMU (WPI), UTIAS, The University of Tokyo(东京大学宇宙起源研究核心理论中心( Kavli IPMU));School of Mathematical and Physical Sciences, Macquarie University(麦考瑞大学数理科学学院);Department of Physics, University of Oxford(牛津大学物理系)