Measurement of the Gamma-Ray Energy Spectrum beyond 100 TeV from the HESS J1843–033 Region
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Published:2022-06-01
Issue:2
Volume:932
Page:120
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ISSN:0004-637X
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Container-title:The Astrophysical Journal
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language:
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Short-container-title:ApJ
Author:
Amenomori M., Asano S., Bao Y. W.ORCID, Bi X. J.ORCID, Chen D., Chen T. L., Chen W. Y., Chen Xu, Chen Y., Cirennima , Cui S. W., Danzengluobu , Ding L. K., Fang J. H., Fang K., Feng C. F., Feng Zhaoyang, Feng Z. Y., Gao Qi, Gomi A., Gou Q. B., Guo Y. Q., Guo Y. Y., He H. H., He Z. T., Hibino K., Hotta N., Hu Haibing, Hu H. B., Hu K. Y., Huang J., Jia H. Y., Jiang L., Jiang P., Jin H. B., Kasahara K., Katayose Y., Kato C., Kato S.ORCID, Kawashima T., Kawata K.ORCID, Kozai M., Kurashige D., Labaciren , Le G. M.ORCID, Li A. F., Li H. J., Li W. J., Li Y., Lin Y. H., Liu B., Liu C., Liu J. S., Liu L. Y., Liu M. Y., Liu W., Liu X. L., Lou Y.-Q., Lu H., Meng X. R., Meng Y., Munakata K., Nagaya K., Nakamura Y., Nakazawa Y., Nanjo H., Ning C. C., Nishizawa M., Ohnishi M., Okukawa S., Ozawa S., Qian L.ORCID, Qian X.ORCID, Qian X. L., Qu X. B., Saito T., Sakakibara Y., Sakata M., Sako T., Sako T. K.ORCID, Shao J., Shibata M., Shiomi A., Sugimoto H., Takano W., Takita M., Tan Y. H., Tateyama N., Torii S., Tsuchiya H., Udo S., Wang H., Wang Y. P., Wangdui , Wu H. R., Wu Q., Xu J. L., Xue L., Yang Z., Yao Y. Q., Yin J., Yokoe Y., Yu N. P., Yuan A. F., Zhai L. M., Zhang C. P.ORCID, Zhang H. M., Zhang J. L., Zhang X.ORCID, Zhang X. Y., Zhang Y., Zhang Yi, Zhang Ying, Zhao S. P., Zhaxisangzhu , Zhou X. X.
Abstract
Abstract
HESS J1843–033 is a very high energy gamma-ray source whose origin remains unidentified. This work presents, for the first time, the energy spectrum of gamma rays beyond 100 TeV from the HESS J1843–033 region using the data recorded by the Tibet air shower array and its underground muon detector array. A gamma-ray source with an extension of 0.°34 ± 0.°12 is successfully detected above 25 TeV at (α, δ) = (281.°09 ± 0.°10, −3.°76 ± 0.°09) near HESS J1843–033 with a statistical significance of 6.2σ, and the source is named TASG J1844–038. The position of TASG J1844–038 is consistent with those of HESS J1843–033, eHWC J1842–035, and LHAASO J1843–0338. The measured gamma-ray energy spectrum in 25 TeV < E < 130 TeV is described with
dN
/
dE
=
(
9.70
±
1.89
)
×
10
−
16
(E/40 TeV)−3.26±0.30 TeV−1 cm−2 s−1, and the spectral fit to the combined spectra of HESS J1843–033, LHAASO J1843–0338, and TASG J1844–038 implies the existence of a cutoff at 49.5 ± 9.0 TeV. Associations of TASG J1844–038 with SNR G28.6–0.1 and PSR J1844–0346 are also discussed in detail for the first time.
Funder
National Key Research and Development Program of China National Natural Science Foundation of China Grant-in-Aid for Scientific Researc Grant-in-Aid for Scientific Research on Priority Areas Grant-in-Aid for international Scientific Research Grant-in-Aid for General Scientific Research Grant-in-Aid for Overseas Scientific Research Grant-in-Aid for Young Scientists Grant-in-Aid for Scientific Research
Publisher
American Astronomical Society
Subject
Space and Planetary Science,Astronomy and Astrophysics
Cited by
4 articles.
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