Deep Search of the Full O3 LIGO Data for Continuous Gravitational Waves from the Cassiopeia A Central Compact Object

Document #:

LIGO-P2400236-v2

Document type:

P - Publications

Abstract:

We present a deep directed search for continuous gravitational waves from the neutron star in the Cassiopeia A (Cas A) supernova remnant, using the full LIGO data set from the LIGO-Virgo-KAGRA thrid observing run (O3). We use the Weave semi-coherent method with a first-stage coherence time of 30 days while restricting the search band to 20-200 Hz for assumed source ages greater than 300 years. No gravitational wave signal is detected. Estimates from simulated continuous wave signals indicate we achieve the most sensitive results to date across the explored parameter space volume, probing to a median strain magnitude as low as ~4e-26 for frequencies near 200 Hz at 95% confidence level.

Files in Document:

• O3_CasA.pdf (file is not accessible)

Other Files:

• SaturatedSubbands_CasA_O3.txt (file is not accessible)
• UL_combined_output.txt (file is not accessible)

Topics:

• Continuous Wave
• Data Analysis

Authors:

• Jonathan Wang
• Keith Riles