We present results of a high-frequency all-sky search for continuous gravitational waves from isolated compact objects in LIGO ’ s 5th Science Run ( \mathsf { S 5 } ) data , using the computing power of the Einstein @ Home volunteer computing project .
This is the only dedicated continuous gravitational wave search that probes this high frequency range on \mathsf { S 5 } data .
We find no significant candidate signal , so we set 90 % -confidence level upper-limits on continuous gravitational wave strain amplitudes .
At the lower end of the search frequency range , around 1250 Hz , the most constraining upper-limit is 5.0 \times 10 ^ { -24 } , while at the higher end , around 1500 Hz , it is 6.2 \times 10 ^ { -24 } .
Based on these upper-limits , and assuming a fiducial value of the principal moment of inertia of 10 ^ { 38 } kg m ^ { 2 } , we can exclude objects with ellipticities higher than roughly 2.8 \times 10 ^ { -7 } within 100 pc of Earth with rotation periods between 1.3 and 1.6 milliseconds .