SEARCH FOR GAMMA RAYS ABOVE 100 TeV FROM THE CRAB NEBULA WITH THE TIBET AIR SHOWER ARRAY AND THE 100 m{sup 2} MUON DETECTOR

A 100 m{sup 2} muon detector (MD) was successfully constructed under the existing Tibet air shower (AS) array in the late fall of 2007. The sensitivity of the Tibet AS array to cosmic gamma rays can be improved by selecting muon-poor events with the MD. Our MC simulation of the MD response reasonabl...

Full description

Saved in:
Bibliographic Details
Published in:The Astrophysical journal 2015-11, Vol.813 (2)
Main Authors: Amenomori, M., Bi, X. J., Chen, W. Y., Ding, L. K., Feng, Zhaoyang, Gou, Q. B., Guo, Y. Q., He, H. H., Hu, H. B., Huang, J., Chen, D., Chen, T. L., Danzengluobu, Hu, Haibing, Cui, S. W., He, Z. T., Feng, C. F., Feng, Z. Y., Hibino, K., Hotta, N., Collaboration: Tibet ASγ Collaboration
Format: Article
Language:English
Subjects:
ASTROPHYSICS, COSMOLOGY AND ASTRONOMY
CHARGE DISTRIBUTION
COMPUTERIZED SIMULATION
COSMIC GAMMA SOURCES
COSMIC MUONS
COSMIC PHOTONS
CRAB NEBULA
GAMMA RADIATION
SENSITIVITY
STARS
TEV RANGE
Online Access:Get full text
Tags: Add Tag
No Tags, Be the first to tag this record!
Description
Summary:A 100 m{sup 2} muon detector (MD) was successfully constructed under the existing Tibet air shower (AS) array in the late fall of 2007. The sensitivity of the Tibet AS array to cosmic gamma rays can be improved by selecting muon-poor events with the MD. Our MC simulation of the MD response reasonably agrees with the experimental data in terms of the charge distribution for one-muon events and the background rejection power. Using the data collected by the Tibet AS array and the 100 m{sup 2} MD taken from 2008 March to 2010 February, we search for continuous gamma-ray emission from the Crab Nebula above ∼100 TeV. No significant excess is found, and the most stringent upper limit is obtained above 140 TeV.
ISSN:0004-637X
1538-4357
DOI:10.1088/0004-637X/813/2/98