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Radio Microlensing: Past, Present & Near Future

Published online by Cambridge University Press:  26 May 2016

L. V. E. Koopmans ,
A. G. de Bruyn ,
C. D. Fassnacht ,
J. Wambsganss  and
R. D. Blandford
L. V. E. Koopmans
Affiliation:
1Caltech, mail code 130-33, Pasadena, CA 91125, USA 2Kapteyn Institute, PO Box 800, NL-9700 AV, Groningen, The Netherlands 3JBO, Lower Withington, Macclesfield, Cheshire, SK11 9DL, UK
A. G. de Bruyn
Affiliation:
2Kapteyn Institute, PO Box 800, NL-9700 AV, Groningen, The Netherlands 4NFRA-ASTRON, PO Box 2, NL-7990 AA, Dwingeloo, The Netherlands
C. D. Fassnacht
Affiliation:
5NRAO, PO Box 0, Socorro, NM 87801, USA
J. Wambsganss
Affiliation:
6University of Potsdam, Inst. for Phys., Am Neuen Palais 10, D-14469, Potsdam, Germany
R. D. Blandford
Affiliation:
1Caltech, mail code 130-33, Pasadena, CA 91125, USA

Abstract

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Strongly correlated non-intrinsic variability between 5 and 8.5 GHz has been observed in one of the lensed images of the gravitational lens B1600+434. These non-intrinsic (i.e. ‘external’) variations are interpreted as radio-micro-lensing of relativistic μas-scale jet components in the source at a redshift of z=1.59 by massive compact objects in the halo of the edge-on disk lens galaxy at z=0.41. We shortly summarize these observations and discuss several new observational and theoretical programs to investigate this new phenomenon in more detail.

Type
Part XII: Poster Papers
Information
Symposium - International Astronomical Union , Volume 201: New Cosmological Data and the Values of the Fundamental Parameters , 2005 , pp. 478 - 479
Copyright
Copyright © Astronomical Society of the Pacific 2005 

References

Koopmans, L. V. E & de Bruyn, A. G., 2000, A&A, 358, 793.Google Scholar
Koopmans, L. V. E., de Bruyn, A. G., Wambsganss, J., & Fassnacht, C. D., 2000a, to appear in Microlensing 2000: A New Era of Microlensing Astrophysics, eds Menzies, J. W. & Sackett, P. D., ASP Conference Series.Google Scholar
Koopmans, L. V. E., de Bruyn, A. G., Wambsganss, J., Fassnacht, C. D. & Blandford, R. D., 2000b, to appear in “Cosmological Physics with Gravitational Lensing”, Kneib, J.-P., Mellier, Y., Moniez, M. & Tran Thanh, Van J. eds, Recontres de Moriond XX.Google Scholar