An Updated Search of Steady TeV $\gamma-$Ray Point Sources in Northern Hemisphere Using the Tibet Air Shower Array
Abstract
Using the data taken from Tibet II High Density (HD) Array (1997 February-1999 September) and Tibet-III array (1999 November-2005 November), our previous northern sky survey for TeV ray point sources has now been updated by a factor of 2.8 improved statistics. From to in declination (Dec) range, no new TeV ray point sources with sufficiently high significance were identified while the well-known Crab Nebula and Mrk421 remain to be the brightest TeV ray sources within the field of view of the Tibet air shower array. Based on the currently available data and at the 90% confidence level (C.L.), the flux upper limits for different power law index assumption are re-derived, which are approximately improved by 1.7 times as compared with our previous reported limits.
Keywords
Cite
@article{arxiv.0804.1862,
title = {An Updated Search of Steady TeV $\gamma-$Ray Point Sources in Northern Hemisphere Using the Tibet Air Shower Array},
author = {Y. Wang and X. J. Bi and S. W. Cui and L. K. Ding and Danzengluobu and X. H. Ding and C. Fan and C. F. Feng and Zhaoyang Feng and Z. Y. Feng and X. Y. Gao and Q. X. Geng and H. W. Guo and H. H. He and M. He and Haibing Hu and H. B. Hu and Q. Huang and H. Y. Jia and Labaciren and G. M. Le and A. F. Li and J. Y. Li and Y. -Q. Lou and H. Lu and S. L. Lu and X. R. Meng and J. Mu and J. R. Ren and Y. H. Tan and B. Wang and H. Wang and Y. G. Wang and H. R. Wu and L. Xue and X. C. Yang and Z. H. Ye and G. C. Yu and A. F. Yuan and H. M. Zhang and J. L. Zhang and N. J. Zhang and X. Y. Zhang and Y. Zhang and Yi Zhang and Zhaxisangzhu and X. X. Zhou and Q. Yuan},
journal= {arXiv preprint arXiv:0804.1862},
year = {2015}
}
Comments
This paper has been accepted by hepnp