1998/03/23 by Alok R. Patnaik, Patnaik, Alok R., R. W. Porcas +2
Earth and Planetary Sciences · Physics and Astronomy · #Astrophysics (astro-ph) #FOS: Physical sciences #Geophysics and Gravity Measurements #Pulsars and Gravitational Waves Research #Radio Astronomy Observations and Technology #astro-ph
paper · pdf · doi:10.48550/arxiv.astro-ph/9803264
5 pages, LaTeX, 3 figures, uses paspconf.sty and psfig.sty. To appear in "Highly Redshifted Radio Lines", eds. C. Carilli, S.Radford, K. Menten, G. Langston, (PASP: San Francisco)
arxiv created 1998/03/23 · openalex publication_date 1998/03/23 · arxiv updated 2009/12/01 · openalex created_date 2025/10/10 · openalex updated_date 2026/07/28
We present multi-frequency radio continuum VLBI observations of the\ngravitational lens system B0218+357 carried out using a global VLBI network and\nthe VLBA. The source has been observed with resolutions from 0.2 milliarcsec to\n5 milliarcsec and displays interesting structure. The spectral properties of\nvarious components show that the lensed object is a standard flat spectrum\nradio source which has many self-absorbed components. Based on the flux ratio\nof the lensed images as a function of frequency we propose a simple model for\nthe background radio source.\n