First Constraining Upper Limits on Gravitational Wave Emission from NS 1987A in SNR 1987A

Abstract

We report on a search for continuous gravitational waves (GWs) from NS 1987A, the neutron star born in SN 1987A. The search covered a frequency band of 75-275 Hz, included a wide range of spin-down parameters for the first time, and coherently integrated 12.8 days of data below 125 Hz and 8.7 days of data above 125 Hz from the second Advanced LIGO observing run. We found no astrophysical signal. We set upper limits on GW emission as tight as an intrinsic strain of $2\times 10^{-25}$ at 90\% confidence. The large spin-down parameter space makes this search the first astrophysically consistent one for continuous GWs from NS 1987A. Our upper limits are the first consistent ones to beat an analog of the spin-down limit based on the age of the neutron star, and hence are the first GW observations to put new constraints on NS 1987A.

References in corpus (14)

• The LIGO Open Science Center
• Maximum elastic deformations of compact stars with exotic equations of state
• Searching for gravitational waves from Cassiopeia A with LIGO
• Spinning down newborn neutron stars: nonlinear development of the r-mode instability
• How to adapt broad-band gravitational-wave searches for r-modes
• Einstein@Home all-sky search for periodic gravitational waves in LIGO S5 data
• High angular resolution ALMA images of dust and molecules in the SN 1987A ejecta
• Postprocessing methods used in the search for continuous gravitational-wave signals from the Galactic Center
• NS 1987A in SN 1987A
• Indication of a Pulsar Wind Nebula in the hard X-ray emission from SN 1987A
• An Einstein@home search for continuous gravitational waves from Cassiopeia A
• Cross-correlation search for continuous gravitational waves from a compact object in SNR 1987A in LIGO Science Run 5
• Loosely coherent search in LIGO O1 data for continuous gravitational waves from Terzan 5 and the galactic center
• Additional evidence for a pulsar wind nebula in the heart of SN 1987A from multi-epoch X-ray data and MHD modeling

Cited by in corpus (2)

• Searches for Continuous-Wave Gravitational Radiation
• Directed search for continuous gravitational waves from the possible kilonova remnant G4.8+6.2