2013ApJ...767...99B

Query : 2013ApJ...767...99B

2013ApJ...767...99B - Astrophys. J., 767, 99 (2013/April-3)

Observation of TeV gamma rays from the unidentified source HESS J1841-055 with the ARGO-YBJ experiment.

BARTOLI B., BERNARDINI P., BI X.J., BOLOGNINO I., BRANCHINI P., BUDANO A., CALABRESE MELCARNE A.K., CAMARRI P., CAO Z., CARDARELLI R., CATALANOTTI S., CATTANEO C., CHEN S.Z., CHEN T.L., CHEN Y., CRETI P., CUI S.W., DAI B.Z., D'ALI STAITI G., D'AMONE A., DANZENGLUOBU, DE MITRI I., D'ETTORRE PIAZZOLI B., DI GIROLAMO T., DING X.H., DI SCIASCIO G., FENG C.F., FENG Z., FENG Z., GALEAZZI F., GIROLETTI E., GOU Q.B., GUO Y.Q., HE H.H., HU H., HU H., HUANG Q., IACOVACCI M., IUPPA R., JAMES I., JIA H.Y., LABACIREN, LI H.J., LI J.Y., LI X.X., LIGUORI G., LIU C., LIU C.Q., LIU J., LIU M.Y., LU H., MA L.L., MA X.H., MANCARELLA G., MARI S.M., MARSELLA G., MARTELLO D., MASTROIANNI S., MONTINI P., NING C.C., PAGLIARO A., PANAREO M., PANICO B., PERRONE L., PISTILLI P., RUGGIERI F., SALVINI P., SANTONICO R., SBANO S.N., SHEN P.R., SHENG X.D., SHI F., SURDO A., TAN Y.H., VALLANIA P., VERNETTO S., VIGORITO C., WANG B., WANG H., WU C.Y., WU H.R., XU B., XUE L., YANG Q.Y., YANG X.C., YAO Z.G., YUAN A.F., ZHA M., ZHANG H.M., ZHANG J., ZHANG J., ZHANG L., ZHANG P., ZHANG X.Y., ZHANG Y., ZHAO J., ZHAXICIREN, ZHAXISANGZHU, ZHOU X.X., ZHU F.R., ZHU Q.Q., ZIZZI G. (The ARGO-YBJ Collaboration)

Abstract (from CDS):

We report the observation of a very high energy γ-ray source whose position is coincident with HESS J1841-055. This source has been observed for 4.5 years by the ARGO-YBJ experiment from 2007 November to 2012 July. Its emission is detected with a statistical significance of 5.3 standard deviations. Parameterizing the source shape with a two-dimensional Gaussian function, we estimate an extension σ = (0.40–0.22+0.32)°, which is consistent with the HESS measurement. The observed energy spectrum is dN/dE = (9.0±1.6)x10–13(E/5 TeV)–2.32±0.23 photons/cm2/s/TeV, in the energy range 0.9-50 TeV. The integral γ-ray flux above 1 TeV is 1.3±0.4 Crab, which is 3.2 ± 1.0 times the flux derived by HESS. The differences in the flux determination between HESS and ARGO-YBJ and possible counterparts at other wavelengths are discussed.

Abstract Copyright: ∼

Journal keyword(s): gamma rays: general

Simbad objects: 21

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Number of rows : 21
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 M 1 SNR 05 34 31.8 +22 01 03           ~ 6516 1
2 Z 184-50 BLL 11 04 27.3140835504 +38 12 31.798495872   13.50 12.90 8.31   ~ 2841 1
3 Z 225-7 BLL 16 53 52.21668403 +39 45 36.6088754 14.09 14.15 13.29 8.26   ~ 2304 2
4 SNR G024.7+00.6 SNR 18 34 46 -07 05.8           ~ 95 0
5 2FGL J1835.5-0649 gam 18 35 36 -06 49.9           ~ 8 0
6 2FGL J1836.8-0623c gam 18 37 07.740 -06 28 37.00           ~ 9 0
7 PSR B1835-06.1 Psr 18 37 43.55 -06 04 49.0           ~ 77 0
8 PSR J1838-0655 Psr 18 38 03.13 -06 55 33.4           ~ 114 1
9 AX J1838.0-0655 SNR 18 38 03.13 -06 55 33.4           ~ 83 2
10 PSR J1838-0549 Psr 18 38 38.1 -05 49 12           ~ 32 0
11 0FGL J1839.0-0549 gam 18 39 26.4 -05 53 22           ~ 27 0
12 2FGL J1839.3-0558c gam 18 39 28.24 -05 59 26.7           ~ 10 0
13 SNR G026.6-00.1 SNR 18 40 -05.7           ~ 18 0
14 ARGO J1839-0627 Psr 18 40 55.0 -05 33 00           ~ 66 1
15 IGR J18410-0535 HXB 18 41 00.4353543192 -05 35 46.474692324   15.91   13.645 11.631 B1Ib 142 0
16 SNR G027.3+00.0 SNR 18 41 17.8 -04 56 12           ~ 345 3
17 PSR J1841-0456 Psr 18 41 19.29 -04 56 11.4           ~ 296 1
18 PSR J1841-0524 Psr 18 41 49.3553989200 -05 24 30.551758848           ~ 43 0
19 ARGO J1841-0332 gam 18 43.6 -03 36           ~ 40 0
20 ARGO J1907+0627 gam 19 08 12.24 +06 23 30.8           ~ 94 0
21 TeV J2032+4130 gam 20 31.7 +41 31           ~ 148 0

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