• Fulltext

       

        Click here to view fulltext PDF


      Permanent link:
      https://www.ias.ac.in/article/fulltext/joaa/007/02/0119-0129

    • Keywords

       

      extragalactic radio sources; quasars, radio structure; quasars, linear polarization

    • Abstract

       

      We present VLA A-array observations at λ20, 6 and 2 cm and B-array observations at λ20 and 6 cm of the quasar B2 1320 + 299, which has a very unusual radio structure. In addition to a component, A, coincident with the quasar, there are two lobes of radio emission, B and C, on the same side of A. These are located at distances of -25 and 50 arcsec respectively from A. The present observations show that A has a flat-spectrum component coincident with the quasar and a weak outer component at a distance of-4 arcsec along PA - 100°. The morphology of B resembles a head-tail type of structure with its tail towards the north-east. The magnetic field lines in component B appear to follow the bend in the tail. Component C exhibits some extension towards the north-west. We discuss the possible nature of B2 1320 + 299 and suggest that while A appears to be an independent source, the relation between B and C, if they are associated at all, is unclear. Deep optical observations are essential to help clarify the situation.

    • Author Affiliations

       

      T. J. Cornwell1 D. J. Saikia2 3 P. Shastri3 L. Feretti4 G. Giovannini4 P. Parma4 C. J. Salter5

      1. National Radio Astronomy Observatory, Post Box 0, Socorro, New Mexico - 87801, USA
      2. Nuffield Radio Astronomy Laboratories, Jodrell Bank, Macclesfield, Cheshire - SKI1 9DL, UK
      3. Radio Astronomy Centre, Tata Institute of Fundamental Research, Post Box 1234, Bangalore - 560012
      4. Istituto di Radioastronomia, Via Irnerio 46, Bologna - I-40126, Italy
      5. Institut de Radioastronomie Millimetrique, Avenida Divina Pastora 7, Nucleo Central, Granada - 18012, Spain
    • Dates

       
  • Journal of Astrophysics and Astronomy | News

    • Continuous Article Publication

      Posted on January 27, 2016

      Since January 2016, the Journal of Astrophysics and Astronomy has moved to Continuous Article Publishing (CAP) mode. This means that each accepted article is being published immediately online with DOI and article citation ID with starting page number 1. Articles are also visible in Web of Science immediately. All these have helped shorten the publication time and have improved the visibility of the articles.

    • Editorial Note on Continuous Article Publication

      Posted on July 25, 2019

      Click here for Editorial Note on CAP Mode

© 2017-2019 Indian Academy of Sciences, Bengaluru.