PMN J0134-0931: A gravitationally lensed quasar with unusual radio morphology

Joshua N. Winn, James E.J. Lovell, Hsiao Wen Chen, André B. Fletcher, Jacqueline N. Hewitt, Alok R. Patnaik, Paul L. Schechter

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40 Scopus citations


The radio-loud quasar J0134-0931 was discovered to have an unusual morphology during our search for gravitational lenses. In Very Large Array and MERLIN images, there are five compact components with a maximum separation of 0″.7. All of these components have the same spectral index from 5 to 43 GHz. In a Very Long Baseline Array image at 1.7 GHz, a curved arc of extended emission joins two of the components in a manner suggestive of gravitational lensing. At least two of the radio components have near-infrared counterparts. We argue that this evidence implies that J0134-0931 is a gravitational lens, although we have not been able to devise a plausible model for the foreground gravitational potential. Like several other radio-loud lenses, the background source has an extraordinarily red optical counterpart.

Original languageEnglish (US)
Pages (from-to)143-152
Number of pages10
JournalAstrophysical Journal
Issue number1 I
StatePublished - Jan 1 2002
Externally publishedYes

All Science Journal Classification (ASJC) codes

  • Astronomy and Astrophysics
  • Space and Planetary Science


  • Gravitational lensing
  • Quasars: individual (PMN J0134-0931)
  • Radio continuum: galaxies


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