X-Ray and TeV Gamma-Ray Observations of Very Strong Flares from the TeV Blazars 1ES 1959+650 and Markarian 421

Details X-Ray and TeV Gamma-Ray Observations of Very Strong Flares from the TeV Blazars 1ES 1959+650 and Markarian 421 X-Ray and TeV Gamma-Ray Observations of Very Strong Flares from the TeV Blazars 1ES 1959+650 and Markarian 421

Mar 2003

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2003head....7.4901k&link_type=abstract

American Astronomical Society, HEAD meeting #7, #49.01; Bulletin of the American Astronomical Society, Vol. 35, p.658

Astronomy and Astrophysics

Astronomy

Scientific paper

Using the RXTE satellite and the VERITAS 10 m Cherenkov telescope, we performed intensive Target of Opportunity (ToO) observation campaigns on the TeV Blazars 1ES 1959+650 and Markarian 421. Previously only known as a weak TeV gamma-ray source, the object 1ES 1959+650 showed gamma-ray fluxes on a level of five times the steady flux from the Crab Nebula. It thus became the third TeV Blazar (besides Markarian 421 and Markarian 501) for which gamma-ray flux variations on time scales of minutes can be studied. Both observation campaigns were complemented by radio (UMRAO) and optical (Boltwood Observatory) observations. We present the results on the correlated flux variations in different energy bands and discuss the implications for the emission and flare models. For 1ES 1959+650 we found "isolated" TeV gamma-ray flares which strongly argue against the Synchrotron Self-Compton emission mechanism, commonly believed to be responsible for the X-Ray and TeV gamma-ray emission from TeV Blazars.

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