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2012ApJ...760..110B - Astrophys. J., 760, 110 (2012/December-1)

Observation of the TeV gamma-ray source MGRO J1908+06 with ARGO-YBJ.

BARTOLI B., BERNARDINI P., BI X.J., BLEVE C., 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., DANZENGLUOBU, DATTOLI M., DE MITRI I., D'ETTORRE PIAZZOLI B., GIROLAMO T.D., DING X.H., SCIASCIO G.D., 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 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., QU X.B., RUGGIERI F., SALVINI P., SANTONICO R., SHEN P.R., SHENG X.D., SHI F., STANESCU C., 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., YAN Y.X., 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., ZHAXICIREN, ZHAXISANGZHU, ZHOU X.X., ZHU F.R., ZHU Q.Q., ZIZZI G. (The Argo-YBJ Collaboration)

Abstract (from CDS):

The extended gamma-ray source MGRO J1908+06, discovered by the Milagro air shower detector in 2007, has been observed for ∼4 years by the ARGO-YBJ experiment at TeV energies, with a statistical significance of 6.2 standard deviations. The peak of the signal is found at a position consistent with the pulsar PSR J1907+0602. Parameterizing the source shape with a two-dimensional Gauss function, we estimate an extension of σext= 0°.49±0°.22, which is consistent with a previous measurement by the Cherenkov Array H.E.S.S. The observed energy spectrum is dN/dE = 6.1±1.4x10–13 (E/4 TeV)^-2.54 ±0.36^ photons/cm2/s.TeV–1, in the energy range of ∼1-20 TeV. The measured gamma-ray flux is consistent with the results of the Milagro detector, but is ∼2-3 times larger than the flux previously derived by H.E.S.S. at energies of a few TeV. The continuity of the Milagro and ARGO-YBJ observations and the stable excess rate observed by ARGO-YBJ and recorded in four years of data support the identification of MGRO J1908+06 as the steady powerful TeV pulsar wind nebula of PSR J1907+0602, with an integrated luminosity over 1 TeV ∼ 1.8 times the luminosity of the Crab Nebula.

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Journal keyword(s): gamma rays: general - pulsars: individual: MGRO J1908+06

Simbad objects: 10

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