We investigate the use of type Ic Super Luminous Supernovae ( SLSN Ic ) as standardizable candles and distance indicators .
Their appeal as cosmological probes stems from their remarkable peak luminosities , hot blackbody temperatures and bright rest frame ultra-violet emission .
We present a sample of sixteen published SLSN , from redshifts 0.1 to 1.2 and calculate accurate K - corrections to determine uniform magnitudes in two synthetic rest frame filter band-passes with central wavelengths at 400nm and 520nm .
At 400nm , we find an encouragingly low scatter in their uncorrected , raw mean magnitudes with M ( 400 ) = -21.70 \pm 0.47 mag for the full sample of sixteen objects .
We investigate the correlation between their decline rates and peak magnitude and find that the brighter events appear to decline more slowly .
In a similar manner to the Phillips relation for type Ia SNe , we define a \Delta M _ { 30 } decline relation .
This correlates peak magnitude and decline over 30 days and can reduce the scatter in standardized peak magnitudes to \pm 0.25 mag .
We further show that M ( 400 ) appears to have a strong color dependence .
Redder objects are fainter and also become redder faster .
Using this peak magnitude - color evolution relation , a low scatter of between \pm 0.19 mag and \pm 0.26 mag can be found in peak magnitudes , depending on sample selection .
However we caution that only eight to ten objects currently have enough data to test this peak magnitude - color evolution relation .
We conclude that SLSN Ic are promising distance indicators in the high redshift Universe in regimes beyond those possible with SNe Ia .
Although the empirical relationships are encouraging , the unknown progenitor systems , how they may evolve with redshift , and the uncertain explosion physics are of some concern .
The two major measurement uncertainties are the limited numbers of low redshift , well studied , objects available to test these relationships and internal dust extinction in the host galaxies .