AAS 206th Meeting, 29 May - 2 June 2005
Session 21 Galaxies and Cosmology
Oral, Monday, 2:00-3:30pm, May 30, 2005, 102 E

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[21.04] Multiwavelength Observations of 1ES 1959+650 in 2003, One Year After the Strong 2002 Outburst

K. Gutierrez (WUSTL), J. Grube (Leeds), H. Krawczynski (WUSTL), M. Aller, H. Aller (UMRAO), P. Charlot, J.-F. Le Campion (Bordeaux Obs), VERITAS Collaboration

In April-May 2003, the blazar 1ES 1959+650 showed a very high level of X-ray activity. The 2-12 keV fluxes measured with the RXTE All Sky Monitor exceeded 10 mCrab for a number of days.

This prompted a multiwavelength campaign of observations including triggering ToO pointed RXTE observations. RXTE observations totaling 33.7 ksec from May 2, 2003 to June 7, 2003 were complemented by TeV \gamma-ray observations taken with the Whipple 10m Cerenkov telescope, radio observations taken with the UMRAO radio telescope and optical observations taken at the Bordeaux optical observatory.

While the X-ray flares were of intermediate amplitude, from 0.63 \rm keV-1 cm-2 s-1 to 0.75 \rm keV-1 cm-2 s-1 at 10 keV, observations did not result in the firm detection of any TeV flares. We will present the radio, optical, X-ray and TeV \gamma-ray observations taken during 2003 and compare them with earlier results from the years 2000 and 2002. Finally, we present fits of a Synchrotron Self-Compton model to the data.

This work was supported by the DOE, NSF, and NASA (grant NAG 13770). UMRAO is partially supported by funds from the Michigan Dept. of Astronomy.

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Bulletin of the American Astronomical Society, 37 #2
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