Detection of X-Ray Emission from the Unidentified TeV Gamma-Ray Source TeV J2032+4130

Abstract

We observed the first unidentified TeV gamma-ray source TeV J2032+4130 with Suzaku. Owing to Suzaku's high sensitivity for detection of diffuse X-ray emission, we found two small structures in the TeV emitting region. One of them is coincident with a gamma-ray pulsar PSR J2032+4127, which was discovered by the Fermi Gamma-ray Space Telescope. By subtracting contribution of point sources estimated by Chandra data, we obtained diffuse X-ray spectrum. The X-ray spectrum can be reproduced by a power-law model with a photon index of about 2, and an X-ray flux of 2x10^{-13} erg s^-1 cm^-2. The ratio of the gamma-ray flux to the X-ray flux is about 10. If the origin of the TeV gamma-ray is inverse Compton scattering of microwave background by high energy electrons, the ratio corresponds to the magnetic field strength of ~1 microG. However, the smaller size of the X-ray emission than that of the TeV emission suggests that energy loss of the electrons can explain the large ratio of the gamma-ray flux with a reasonable magnetic field strength of a few microG.

6 pages, 6 figures, published in PASJ (Suzaku+MAXI Special Issue)

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Cited by in corpus (6)

• Multiwavelength monitoring and X-ray brightening of Be X-ray binary PSR J2032+4127/MT91 213 on its approach to periastron
• 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
• Unveiling the nature of the unidentified gamma-ray sources IV: the $\text{Swift}$ catalog of potential X-ray counterparts
• Gamma-rays from the binary system containing PSR J2032+4127 during its periastron passage
• Analysis of the Emission and Morphology of the Pulsar Wind Nebula Candidate HAWC J2031+415