XMM-Newton observations of the first unidentified TeV gamma-ray source TeV J2032+4130

Abstract

(abridged) The first unidentified very high energy gamma ray source (TeV J2032+4130) in the Cygnus region has been the subject of intensive search for a counterpart source at other wavelengths. A deep ($\approx 50$ ksec) exposure of TeV J2032+4130 with \textit{XMM-Newton} has been obtained. The contribution of point sources to the observed X-ray emission from TeV J2032+4130 is subtracted from the data. The point-source subtracted X-ray data are analyzed using blank sky exposures and regions adjacent to the position of TeV J2032+4130 in the field of view covered by the XMM-Newton telescopes to search for diffuse X-ray emission. An extended X-ray emission region with a full width half maximum (FWHM) size of $\approx 12$ arc min is found. The centroid of the emission is co-located with the position of TeV J2032+4130.The energy spectrum of the emission coinciding with the position and extension of TeV J2032+4130 can be modeled by a power-law model with a photon index $\Gamma =1.5\pm 0.2_{\mathrm{stat}}\pm 0.3_{\mathrm{sys}}$ and an energy flux integrated between 2 and 10 keV of $f_{2-10\mathrm{keV}}\approx 7\cdot 10^{-13}$ ergs/(cm${}^2$ s) which is lower than the very high energy gamma-ray flux observed from TeV J2032+4130. We conclude that the faint extended X-ray emission discovered in this observation is the X-ray counterpart of TeV J2032+4130. Formally, it can not be excluded that the extended emission is due to an unrelated population of faint, hot ($k_{B}T\approx 10$ keV) unresolved point-sources which by chance coincides with the position and extension of TeV J2032+4130. We discuss our findings in the frame of both hadronic and leptonic gamma-ray production scenarios.

arXiv comment5 Pages, 3 Figures, accepted for publication in A&A

References in corpus (22)

• Energy spectra of gamma-rays, electrons and neutrinos produced at proton-proton interactions in the very high energy regime
• The H.E.S.S. survey of the Inner Galaxy in very high-energy gamma-rays
• First Year Performance of The IceCube Neutrino Telescope
• A new population of very high energy gamma-ray sources in the Milky Way
• Discovery of TeV Gamma-Ray Emission from the Cygnus Region of the Galaxy
• The XMM-Newton EPIC Background: Production of Background Maps and Event Files
• An unidentified TeV source in the vicinity of Cygnus OB2
• Non-thermal high-energy emission from colliding winds of massive stars
• The unidentified TeV source (TeVJ2032+4130) and surrounding field: Final HEGRA IACT-System results
• Detection of extended very-high-energy gamma-ray emission towards the young stellar cluster Westerlund 2
• Unveiling the Cygnus OB2 stellar population with Chandra
• CHANDRA/VLA Follow-up of TeV J2032+4131, the Only Unidentified TeV Gamma-ray Source
• TeV gamma-rays and neutrinos from photo-disintegration of nuclei in Cygnus OB2
• Gamma-rays and cosmic-rays from a pulsar in Cygnus OB2
• Evidence for TeV gamma ray emission from TeV J2032+4130 in Whipple archival data
• Search for a Point-Source Counterpart of the Unidentified Gamma-Ray Source TeV J2032+4130 in Cygnus
• Observations of the Unidentified TeV Gamma-Ray Source TeV J2032+4130 with the Whipple Observatory 10 m Telescope
• Deeper Chandra Follow-up of Cygnus TeV Source Perpetuates Mystery
• Hadronic processes within collective stellar winds
• XMM-Newton Data Processing for Faint Diffuse Emission: Proton Flares, Exposure Maps and Report on EPIC MOS1 Bright CCDs Contamination
• The population of radio sources in the field of the unidentified gamma-ray source TeV J2032+4130
• Transient X-ray sources in the field of the Unidentified Gamma-Ray Source TeV J2032+4130 in Cygnus

Cited by in corpus (18)

• A Measurement of the Spatial Distribution of Diffuse TeV Gamma Ray Emission from the Galactic Plane with Milagro
• Radio detection of LAT PSRs J1741-2054 and J2032+4127: no longer just gamma-ray pulsars
• Fermi-LAT Search for Pulsar Wind Nebulae around gamma-ray Pulsars
• MAGIC observations of the unidentified TeV gamma-ray source TeV J2032+4130
• Observations of the unidentified gamma-ray source TeV J2032+4130 by VERITAS
• A Very High Energy $\gamma$-Ray Survey towards the Cygnus Region of the Galaxy
• A multi-epoch XMM-Newton campaign on the core of the massive Cyg OB2 association
• Radio continuum and near-infrared study of the MGRO J2019+37 region
• Spectral evolution of non-thermal electron distributions in intense radiation fields
• Detection of X-Ray Emission from the Unidentified TeV Gamma-Ray Source TeV J2032+4130
• Discovery of Extended X-Ray emission from the unidentified TeV source HESS J1614-518 using the Suzaku Satellite
• TeV Gamma Ray Astronomy
• High-(Energy)-Lights -- The Very High Energy Gamma-Ray Sky
• Nature of the Unidentified TeV Source HESS J1614-518, Revealed by Suzaku and XMM-Newton Observations
• The Molecular Environment of the Gamma-ray Source TeV J2032+4130
• Status of Very High Energy gamma-ray Astronomy as of early 2008
• Analysis of the Emission and Morphology of the Pulsar Wind Nebula Candidate HAWC J2031+415
• Note on XMM-Newton observations of the first unidentified TeV gamma-ray source TeV J2032+4130 by Horns et al. astro-ph/0705.0009