2022ApJ...932..120A

Query : 2022ApJ...932..120A

2022ApJ...932..120A - Astrophys. J., 932, 120-120 (2022/June-3)

Measurement of the Gamma-Ray Energy Spectrum beyond 100 TeV from the HESS J1843-033 Region.

AMENOMORI M., ASANO S., BAO Y.W., BI X.J., CHEN D., CHEN T.L., CHEN W.Y., CHEN X., CHEN Y., CIRENNIMA, CUI S.W., DANZENGLUOBU, DING L.K., FANG J.H., FANG K., FENG C.F., FENG Z., FENG Z.Y., GAO Q., GOMI A., GOU Q.B., GUO Y.Q., GUO Y.Y., HE H.H., HE Z.T., HIBINO K., HOTTA N., HU H., 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., KAWASHIMA T., KAWATA K., KOZAI M., KURASHIGE D., LABACIREN, LE G.M., 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., QIAN X., QIAN X.L., QU X.B., SAITO T., SAKAKIBARA Y., SAKATA M., SAKO T., SAKO T.K., 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., ZHANG H.M., ZHANG J.L., ZHANG X., ZHANG X.Y., ZHANG Y., ZHANG Y., ZHANG Y., ZHAO S.P., ZHAXISANGZHU and ZHOU X.X.

Abstract (from CDS):

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\pm 1.89)\times {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.

Abstract Copyright: © 2022. The Author(s). Published by the American Astronomical Society.

Journal keyword(s): Galactic cosmic rays - Gamma-ray astronomy - Gamma-ray sources - Gamma-ray observatories - Cosmic ray sources

Simbad objects: 17

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Number of rows : 17
N Identifier Otype ICRS (J2000)
RA 		ICRS (J2000)
DEC 		Mag U Mag B Mag V Mag R Mag I Sp type #ref
1850 - 2026 		#notes
1 SNR J052559-660453 SNR 05 26 00.4 -66 05 02     12.71     ~ 456 2
2 PSR J0633+1746 Psr 06 33 54.153 +17 46 12.91           ~ 1308 0
3 eHWC J1842-035 gam 18 42.9 -03 31           ~ 5 0
4 SNR G028.64+00.20 SR? 18 42 53 -03 43.7           ~ 5 0
5 LHAASO J1843-0338 gam 18 43.0 -03 38           ~ 11 0
6 SNR G028.56+00.00 SR? 18 43 28 -03 53.2           ~ 7 0
7 ARGO J1841-0332 gam 18 43.6 -03 36           ~ 40 0
8 SNR G028.6-00.1 SNR 18 43 55 -03 53.0           ~ 64 1
9 [ADP79] 028.600+0.126 Rad 18 43 58.4 -03 54 44           ~ 5 0
10 GRS G028.60 -00.13 SNR 18 44 00.30 -03 54 47.1           ~ 5 0
11 NAME TASG J1844-038 gam 18 44.4 -03 46           ~ 4 0
12 PSR J1844-0346 Psr 18 44 32.90 -03 46 26.6           ~ 45 0
13 HESS J1844-030 gam 18 44 40.0 -03 06 00           ~ 17 0
14 SNR G028.78-00.44 SR? 18 45 25 -03 53.6           ~ 8 0
15 PSR J1846-0258 Psr 18 46 24.75 -02 58 29.6           ~ 388 2
16 SNR G106.3+02.7 SNR 22 27.5 +60 50           ~ 99 1
17 [HVB89] G28.60-0.13 C Rad ~ ~           ~ 3 0

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