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Session 13 - Gravitational Effects.
Display session, Monday, June 10
Great Hall,

[13.03] New VLA Observations of the Gravitationally Lensed Quasar 0957+561

M. Harvanek, J. Stocke (U. Colorado), T. Tyson (ATandT Bell Labs.), G. Rhee (U. Nevada, Las Vegas)

We present 20, 6, 3.6 and 2cm high dynamic range radio maps of the gravitationally lensed quasar 0957+561 obtained with the VLA in A configuration. The 20cm map shows extended structure not seen previously which may be the lensed second images of the extended structures associated with image A. Radio positions of the quasar cores and the lensing galaxy are compared to optical positions from HST and CFHT data. We discuss possible explanations for the extended 20cm radio emission and the implications concerning the gravitational lens models.

Program listing for Monday