Use of Excess Power Method and Convolutional Neural Network in All-Sky Search for Continuous Gravitational Waves

Understand

The signal of continuous gravitational waves has a longer duration than the observation period.

• Even if the waveform in the source frame is monochromatic, we will observe the waveform with modulated frequencies due to the motion of the detector.
• If the source location is unknown, a lot of templates having different sky positions are required to demodulate the frequency, and the required huge computational cost restricts the applicable parameter region of coherent search.
• In this work, we propose and examine a new method to select candidates, which reduces the cost of coherent search by following-up only the selected candidates.