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2007ApJ...658.1062K - Astrophys. J., 658, 1062-1068 (2007/April-1)

Observations of the unidentified TeV γ-ray source TeV J2032+4130 with the Whipple observatory 10 M telescope.

KONOPELKO A., ATKINS R.W., BLAYLOCK G., BUCKLEY J.H., BUTT Y., CARTER-LEWIS D.A., CELIK O., COGAN P., CHOW Y.C.K., CUI W., DOWDALL C., ERGIN T., FALCONE A.D., FEGAN D.J., FEGAN S.J., FINLEY J.P., FORTIN P., GILLANDERS G.H., GUTIERREZ K.J., HALL J., HANNA D., HORAN D., HUGHES S.B., HUMENSKY T.B., IMRAN A., JUNG I., KAARET P., KENNY G.E., KERTZMAN M., KIEDA D.B., KILDEA J., KNAPP J., KOSACK K., KRAWCZYNSKI H., KRENNRICH F., LANG M.J., LEBOHEC S., MORIARTY P., MUKHERJEE R., NAGAI T., ONG R.A., PERKINS J.S., POHL M., RAGAN K., REYNOLDS P.T., ROSE H.J., SEMBROSKI G.H., SCHROEDTER M., SMITH A.W., STEELE D., SYSON A., SWORDY S.P., TONER J.A., VALCARCEL L., VASSILIEV V.V., WAGNER R.G., WAKELY S.P., WEEKES T.C., WHITE R.J., WILLIAMS D.A., ZITZER B. (The VERITAS Collaboration)

Abstract (from CDS):

We report on observations of the sky region around the unidentified TeV γ-ray source (TeV J2032+4130) carried out with the Whipple Observatory 10 m atmospheric Cerenkov telescope for a total of 65.5 hr between 2003 and 2005. The standard two-dimensional analysis developed by the Whipple collaboration for a stand-alone telescope reveals an excess in the field of view at a pretrial significance level of 6.1 σ. The measured position of this excess is α=20h32m27s, δ=41°39'17'' (J2000.0). The estimated integral flux for this γ-ray source is about 8% of the Crab Nebula flux. The data are consistent with a pointlike source. Here we present a detailed description of the standard two-dimensional analysis technique used for the analysis of data taken with the Whipple Observatory 10 m telescope and the results for the TeV J2032+4130 campaign. We include a short discussion of the physical mechanisms that may be responsible for the observed γ-ray emission, based on possible association with known astrophysical objects, in particular, Cygnus OB2.

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Journal keyword(s): Gamma Rays: Observations - Radiation Mechanisms: Nonthermal

Simbad objects: 7

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