Observations of the unidentified gamma-ray source TeV J2032+4130 by VERITAS

Abstract

TeV J2032+4130 was the first unidentified source discovered at very high energies (VHE; E $>$ 100 GeV), with no obvious counterpart in any other wavelength. It is also the first extended source to be observed in VHE gamma rays. Following its discovery, intensive observational campaigns have been carried out in all wavelengths in order to understand the nature of the object, which have met with limited success. We report here on a deep observation of TeV J2032+4130, based on 48.2 hours of data taken from 2009 to 2012 by the VERITAS (Very Energetic Radiation Imaging Telescope Array System) experiment. The source is detected at 8.7 standard deviations ($\sigma$) and is found to be extended and asymmetric with a width of 9.5${}^{\prime }$$\pm$1.2${}^{\prime }$ along the major axis and 4.0${}^{\prime }$$\pm$0.5${}^{\prime }$ along the minor axis. The spectrum is well described by a differential power law with an index of 2.10 $\pm$ 0.14${}_{stat}$ $\pm$ 0.21${}_{sys}$ and a normalization of (9.5 $\pm$ 1.6${}_{stat}$ $\pm$ 2.2${}_{sys}$) $\times$ 10${}^{-13}$TeV${}^{-1}$ cm${}^{-2}$ s${}^{-1}$ at 1 TeV. We interpret these results in the context of multiwavelength scenarios which particularly favor the pulsar wind nebula (PWN) interpretation.

References in corpus (10)

• The ATNF Pulsar Catalogue
• TEMPO2, a new pulsar timing package. I: Overview
• Background Modelling in Very-High-Energy gamma-ray Astronomy
• Discovery of TeV Gamma-Ray Emission from the Cygnus Region of the Galaxy
• TeV gamma-ray survey of the Northern sky using the ARGO-YBJ detector
• Evidence for TeV gamma ray emission from TeV J2032+4130 in Whipple archival data
• Observations of the Unidentified TeV Gamma-Ray Source TeV J2032+4130 with the Whipple Observatory 10 m Telescope
• XMM-Newton observations of the first unidentified TeV gamma-ray source TeV J2032+4130
• The population of radio sources in the field of the unidentified gamma-ray source TeV J2032+4130
• TeV J2032+4130: a not-so-dark Accelerator?

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