利用VERITAS研究MGRO J1908+06的TeV形态
高能天体物理现象
2015-06-19 v1
摘要
我们报告了利用VERITAS甚高能（VHE）伽马射线天文台对扩展TeV伽马射线源MGRO J1908+06进行的深度观测。此前，TeV发射被归因于Fermi-LAT脉冲星PSR J1907+0602的脉冲星风云（PWN）。我们在14个标准偏差（14 sigma）的显著性水平上探测到MGRO J1908+06，并测得光子指数为2.20 ± 0.10_stat ± 0.20_sys。TeV发射是扩展的，覆盖了PSR J1907+0602附近区域，并延伸至超新星遗迹G40.5-0.5。当用二维高斯拟合时，内在扩展的标准偏差为sigma_src = 0.44 ± 0.02度。与其他类似年龄的TeV脉冲星风云（其中TeV谱随距脉冲星距离增加而变软）不同，在脉冲星位置附近测得的TeV谱与在距G40.5-0.5边缘0.33度位置测得的谱一致。
引用
@article{arxiv.1404.7185,
title = {Investigating the TeV Morphology of MGRO J1908+06 with VERITAS},
author = {E. Aliu and S. Archambault and T. Aune and B. Behera and M. Beilicke and W. Benbow and K. Berger and R. Bird and J. H. Buckley and V. Bugaev and J. V Cardenzana and M. Cerruti and X. Chen and L. Ciupik and E. Collins-Hughes and M. P. Connolly and W. Cui and J. Dumm and V. V. Dwarkadas and M. Errando and A. Falcone and S. Federici and Q. Feng and J. P. Finley and H. Fleischhack and P. Fortin and L. Fortson and A. Furniss and N. Galante and D. Gall and G. H. Gillanders and S. Griffin and S. T. Griffiths and J. Grube and G. Gyuk and D. Hanna and J. Holder and G. Hughes and T. B. Humensky and P. Kaaret and M. Kertzman and Y. Khassen and D. Kieda and F. Krennrich and S. Kumar and M. J. Lang and A. S Madhavan and G. Maier and A. J. McCann and K. Meagher and J. Millis and P. Moriarty and R. Mukherjee and D. Nieto and A. O'Faolain de Bhroithe and R. A. Ong and A. N. Otte and D. Pandel and N. Park and M. Pohl and A. Popkow and H. Prokoph and J. Quinn and K. Ragan and J. Rajotte and G. Ratliff and L. C. Reyes and P. T. Reynolds and G. T. Richards and E. Roache and J. Rousselle and G. H. Sembroski and K. Shahinyan and F. Sheidaei and A. W. Smith and D. Staszak and I. Telezhinsky and K. Tsurusaki and J. V. Tucci and J. Tyler and A. Varlotta and V. V. Vassiliev and S. Vincent and S. P. Wakely and J. E. Ward and A. Weinstein and R. Welsing and A. Wilhelm},
journal= {arXiv preprint arXiv:1404.7185},
year = {2015}
}
备注
To appear in ApJ, 8 pages