Milliarcsec-scale polarization observations of the gravitational lens B1422+231

1999/05/25 by A. R. Patnaik, A. J. Kemball, R. W. Porcas +1 · 4 citations
Earth and Planetary Sciences · Physics and Astronomy · #Cosmology and Gravitation Theories #Geophysics and Gravity Measurements #Pulsars and Gravitational Waves Research #astro-ph

paper · pdf · doi:10.1046/j.1365-8711.1999.02813.x

5 pages, LaTeX, 6 figures, uses psfig.sty and rotate.sty. MNRAS Letter (accepted)

arxiv created 1999/05/25 · openalex publication_date 1999/07/01 · arxiv updated 2009/12/01 · openalex created_date 2016/06/24 · openalex updated_date 2026/07/28

Abstract

We present polarization observations of the gravitational lens system B1422+231 made at 8.4 GHz using the VLBA and the 100-m telescope at Effelsberg. All four images of the quasar show structure on the milliarcsec scale. The three bright images show tangential stretching as expected from lens models. Some basic properties of gravitational lensing are exhibited by this system. The surface brightness of images A and B are the same and the parity reversal expected in image B is revealed, for the first time, by polarization observations. There is a large differential Faraday rotation between images A and B.

Cited by

• Parity dependence in strong lens systems as a probe of dark matter substructure
• Detection of X‐Rays from Galaxy Groups Associated with the Gravitationally Lensed Systems PG 1115+080 and B1422+231
• Lensing Optical Depths for Substructure and Isolated Dark Matter Halos
• Finite source effects in strong lensing: implications for the substructure mass scale