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    • Keywords


      Radio source; high red-shift; galaxies.

    • Abstract


      High red-shift radio galaxies are best searched at low radio frequencies, due to its steep radio spectra. Here we present preliminary results from our programme to search for high red-shift radio galaxies to ∼ 10 to 100 times fainter than the known population till date. We have extracted ultra-steep spectrum (USS) samples from deep 150 MHz Giant Meter-wave Radio Telescope (GMRT) observations from one of the three well-studied DEEP2 fields to this effect. From correlating these radio sources with respect to the high-frequency catalogues such as VLA, FIRST and NVSS at 1.4 GHz, we find ∼ 100 steep spectrum (spectral index, 𝛼 > 1) radio sources, which are good candidates for high red-shift radio galaxies.

    • Author Affiliations


      Susanta K. Bisoi1 C. H. Ishwara-Chandra2 S. K. Sirothia2 P. Janardhan1

      1. Astronomy & Astrophysics Division, Physical Research Laboratory, Ahmedabad 380 009, India.
      2. National Centre for Radio Astrophysics, Post Bag No. 3, Ganeshkind, Pune 411 007, India.
    • Dates

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