We present a comprehensive analysis of Chandra X-ray observations of 15 young radio quasars at redshifts 4.5 < z < 5.0 .
All sources are detected in the 0.5–7.0 keV energy band .
Emission spectra are extracted , and the average photon index for the sample is measured to be 1.5 \pm 0.1 .
Unabsorbed rest-frame 2–10 keV luminosities are found to range between ( 0.5 – 23.2 ) \times 10 ^ { 45 } erg s ^ { -1 } .
The optical–X-ray power-law spectral index \alpha _ { ox } is calculated for each source using optical/UV data available in the literature .
The \alpha _ { ox } –UV relationship is compared with other quasar surveys , and an anticorrelation is observed that agrees with independent estimates .
Rest-frame radio and X-ray luminosities are established for the sample , and a correlation between the luminosities is detected .
These multiwavelength results reinforce a lack of spectral evolution for quasars over a broad redshift range .
We additionally identify three quasars from our multiwavelength analysis that are statistically significant outliers , with one source being a Compton-thick candidate in the early universe , and discuss each in detail .