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A waveform model for the eccentric binary black holes named SEOBNRE has beenused to analyze the LIGO-Virgo's gravitational wave data by several groups. Theaccuracy of this model has been validated by comparing it with numericalrelativity. However, SEOBNRE is a time-domain model, and the efficiency forgenerating waveforms is a bottleneck in data analysis. To overcome thisdisadvantage, we offer a reduced-order surrogate model for eccentric binaryblack holes based on the SEOBNRE waveforms. This surrogate model (SEOBNRE\_S)can simulate the complete inspiral-merger-ringdown waves with enough accuracy,covering eccentricities from 0 to 0.25 (0.1), and mass ratio from 1:1 to 5:1(2:1) for nonspinning (spinning) binaries. The speed of waveform generation isaccelerated about $10^2 \sim 10^3$ times than the original SEOBNRE model.Therefore SEOBNRE\_S could be helpful in the analysis of LIGO data to findpotential eccentricities.

A surrogate model for gravitational waveforms of spin-aligned binary black holes with eccentricities