An Analysis of High Redshift Radio Galaxies with Mid-Range Spectral Indices at Z ~ 6

Overview

I use existing Very Large Array observations of high redshift radio galaxies (HRRGs) to create a simulated spectral energy distribution (SED) of early radio sources (z~6). I diagnose the presence of an oscillating model for fluctuations in spectral indices for galaxies at both high and low frequencies by using observed spectral flux densities and calculated luminosity distance to create small portions of radio SEDs for analysis. Spectral indices can be used to hypothesize about the presence of active galactic nuclei (AGN) and star formation regions (SFG) in specific galaxies. I find that, at both high and low frequencies, spectral indices in HRRGs that have especially active nuclei tend to oscillate violently over time, signifying concussive galactic change across relatively small time periods and providing an explanation for spectral indices within the 10­25 W.GHz-1 bin that seem to be “midrange”. Galaxies in this classification that are observed at low frequencies have a gentler spectral index oscillation than those at higher frequencies. This leads to the proposal of a new class of HRRG-- “supernucleic”—and the obviation of the usage of the term “midrange” for these galaxies as grossly inaccurate and wildly misleading.

Competition history

• AJAS 2018 Category not listed

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