The Population of Radio Sources in the Field of the Unidentified Gamma-Ray Source TeV J2032+4130

TeV J2032+4130 is the first extended very high energy gamma-ray source and has remained enigmatic since its discovery because of the lack of identification. We report here deep radio observations covering the TeV J2032+4130 field and revealing for the first time an extended and diffuse radio emission, as well as a remarkable population of compact radio sources. Some of these radio sources are in positional coincidence with X-ray and optical/IR sources. Future follow-up studies of these new radio sources will likely contribute to solving the mystery of this extended unidentified TeV source.

[1]  G. E. Romero,et al.  High-Energy Gamma Rays from Stellar Associations , 2003, astro-ph/0312128.

[2]  Spain.,et al.  A radio and infrared exploration around Cygnus X-3 , 2006, astro-ph/0601690.

[3]  A. Noutsos,et al.  Discovery of Very High Energy Gamma Rays Associated with an X-ray Binary , 2005, Science.

[4]  F. Miniati,et al.  Deeper Chandra Follow-up of Cygnus TeV Source Perpetuates Mystery , 2005, astro-ph/0509191.

[5]  Electromagnetic radiation initiated by hadronic jets from microquasars in the ISM , 2004, astro-ph/0411508.

[6]  M. Pohl,et al.  Chandra/Very Large Array Follow-Up of TeV J2032+4131, the Only Unidentified TeV Gamma-Ray Source , 2003, astro-ph/0302342.

[7]  Martí,et al.  Discovery of a high-energy gamma-ray-emitting persistent microquasar , 2000, Science.

[8]  E. al.,et al.  The unidentified TeV source (TeV J2032+4130) and surrounding field: Final HEGRA IACT-System results , 2005, astro-ph/0501667.

[9]  N Tonello,et al.  Variable Very-High-Energy Gamma-Ray Emission from the Microquasar LS I +61 303 , 2006, Science.

[10]  Hadronic processes within collective stellar winds , 2005, astro-ph/0510769.

[11]  M. Eracleous,et al.  Search for a Point-Source Counterpart of the Unidentified Gamma-Ray Source TeV J2032+4130 in Cygnus , 2003, astro-ph/0302130.

[12]  F. A. Aharonian,et al.  An unidentified TeV source in the vicinity of Cygnus OB2 , 2002 .

[13]  P. Massey,et al.  Massive stars in Cyg OB2 , 1991 .

[14]  A. Noutsos,et al.  A New Population of Very High Energy Gamma-Ray Sources in the Milky Way , 2005, Science.

[15]  V. Bosch-Ramon,et al.  Spectral energy distribution of the γ-ray microquasar LS 5039 , 2006 .

[16]  K. Bernlöhr,et al.  The H.E.S.S. Survey of the Inner Galaxy in Very High Energy Gamma Rays , 2005 .