The New Unidentified TeV Source in Cygnus (TeV J2032+4130): HEGRA IACT-System Results

Details The New Unidentified TeV Source in Cygnus (TeV J2032+4130): HEGRA IACT-System Results The New Unidentified TeV Source in Cygnus (TeV J2032+4130): HEGRA IACT-System Results

Jul 2003

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2003icrc....4.2345r&link_type=abstract

Proceedings of the 28th International Cosmic Ray Conference. July 31-August 7, 2003. Trukuba, Japan. Under the auspices of the I

Physics

2

Scientific paper

The first unidentified TeV source in Cygnus is confirmed by follow-up ˇ observations carried out in 2002 with the HEGRA stereoscopic system of Cerenkov telescopes. Using all ˜279 hrs of data, this new source TeV J2032+4130, is steady over the four years of data taking, is extended with radius 6.2 , and has a hard spectrum with photon index -1.9. Its location places it at the edge of the core of the extremely dense OBasso ciation, Cygnus OB2. Its integral flux above energies E > 1 TeV amounts to ˜3% of the Crab nebula flux. No counterpart at radio, optical and X-ray energies is as-yet seen, leaving TeV J2032+4130 presently unidentifed. Summarised here are observational parameters of this source and brief astrophysical interpretation.

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