Search for post-merger gravitational waves from the remnant of the binary neutron star merger GW170817

B. P. Abbott, R. Birney, S. Jawahar, N. A. Lockerbie, S. Reid, K. V. Tokmakov, LIGO Scientific Collaboration, Virgo Collaboration

Research output: Contribution to journalArticle

  • 25 Citations

Abstract

The first observation of a binary neutron star (NS) coalescence by the Advanced LIGO and Advanced Virgo gravitational-wave (GW) detectors offers an unprecedented opportunity to study matter under the most extreme conditions. After such a merger, a compact remnant is left over whose nature depends primarily on the masses of the inspiraling objects and on the equation of state of nuclear matter. This could be either a black hole (BH) or an NS, with the latter being either long-lived or too massive for stability implying delayed collapse to a BH. Here, we present a search for GWs from the remnant of the binary NS merger GW170817 using data from Advanced LIGO and Advanced Virgo. We search for short- (1 s) and intermediate-duration (500 s) signals, which include GW emission from a hypermassive NS or supramassive NS, respectively. We find no signal from the post-merger remnant. Our derived strain upper limits are more than an order of magnitude larger than those predicted by most models. For short signals, our best upper limit on the root sum square of the GW strain emitted from 1–4 kHz is  at 50% detection efficiency. For intermediate-duration signals, our best upper limit at 50% detection efficiency is  for a millisecond magnetar model, and  for a bar-mode model. These results indicate that post-merger emission from a similar event may be detectable when advanced detectors reach design sensitivity or with next-generation detectors.
LanguageEnglish
Article numberL16
Number of pages13
JournalAstrophysical Journal Letters
Volume851
Issue number1
DOIs
StatePublished - 7 Dec 2017

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binary stars
gravitational waves
merger
neutron stars
LIGO (observatory)
detectors
coalescence
magnetars
equation of state
coalescing
equations of state
sensitivity
detector
detection

Keywords

  • gravitational waves
  • data analysis
  • stars
  • neutron

Cite this

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abstract = "The first observation of a binary neutron star (NS) coalescence by the Advanced LIGO and Advanced Virgo gravitational-wave (GW) detectors offers an unprecedented opportunity to study matter under the most extreme conditions. After such a merger, a compact remnant is left over whose nature depends primarily on the masses of the inspiraling objects and on the equation of state of nuclear matter. This could be either a black hole (BH) or an NS, with the latter being either long-lived or too massive for stability implying delayed collapse to a BH. Here, we present a search for GWs from the remnant of the binary NS merger GW170817 using data from Advanced LIGO and Advanced Virgo. We search for short- (1 s) and intermediate-duration (500 s) signals, which include GW emission from a hypermassive NS or supramassive NS, respectively. We find no signal from the post-merger remnant. Our derived strain upper limits are more than an order of magnitude larger than those predicted by most models. For short signals, our best upper limit on the root sum square of the GW strain emitted from 1–4 kHz is  at 50{\%} detection efficiency. For intermediate-duration signals, our best upper limit at 50{\%} detection efficiency is  for a millisecond magnetar model, and  for a bar-mode model. These results indicate that post-merger emission from a similar event may be detectable when advanced detectors reach design sensitivity or with next-generation detectors.",
keywords = "gravitational waves, data analysis, stars, neutron",
author = "Abbott, {B. P.} and R. Birney and S. Jawahar and Lockerbie, {N. A.} and S. Reid and Tokmakov, {K. V.} and {LIGO Scientific Collaboration} and {Virgo Collaboration}",
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Search for post-merger gravitational waves from the remnant of the binary neutron star merger GW170817. / Abbott, B. P.; Birney, R.; Jawahar, S.; Lockerbie, N. A.; Reid, S.; Tokmakov, K. V.; LIGO Scientific Collaboration; Virgo Collaboration.

In: Astrophysical Journal Letters, Vol. 851, No. 1, L16, 07.12.2017.

Research output: Contribution to journalArticle

TY - JOUR

T1 - Search for post-merger gravitational waves from the remnant of the binary neutron star merger GW170817

AU - Abbott,B. P.

AU - Birney,R.

AU - Jawahar,S.

AU - Lockerbie,N. A.

AU - Reid,S.

AU - Tokmakov,K. V.

AU - LIGO Scientific Collaboration

AU - Virgo Collaboration

PY - 2017/12/7

Y1 - 2017/12/7

N2 - The first observation of a binary neutron star (NS) coalescence by the Advanced LIGO and Advanced Virgo gravitational-wave (GW) detectors offers an unprecedented opportunity to study matter under the most extreme conditions. After such a merger, a compact remnant is left over whose nature depends primarily on the masses of the inspiraling objects and on the equation of state of nuclear matter. This could be either a black hole (BH) or an NS, with the latter being either long-lived or too massive for stability implying delayed collapse to a BH. Here, we present a search for GWs from the remnant of the binary NS merger GW170817 using data from Advanced LIGO and Advanced Virgo. We search for short- (1 s) and intermediate-duration (500 s) signals, which include GW emission from a hypermassive NS or supramassive NS, respectively. We find no signal from the post-merger remnant. Our derived strain upper limits are more than an order of magnitude larger than those predicted by most models. For short signals, our best upper limit on the root sum square of the GW strain emitted from 1–4 kHz is  at 50% detection efficiency. For intermediate-duration signals, our best upper limit at 50% detection efficiency is  for a millisecond magnetar model, and  for a bar-mode model. These results indicate that post-merger emission from a similar event may be detectable when advanced detectors reach design sensitivity or with next-generation detectors.

AB - The first observation of a binary neutron star (NS) coalescence by the Advanced LIGO and Advanced Virgo gravitational-wave (GW) detectors offers an unprecedented opportunity to study matter under the most extreme conditions. After such a merger, a compact remnant is left over whose nature depends primarily on the masses of the inspiraling objects and on the equation of state of nuclear matter. This could be either a black hole (BH) or an NS, with the latter being either long-lived or too massive for stability implying delayed collapse to a BH. Here, we present a search for GWs from the remnant of the binary NS merger GW170817 using data from Advanced LIGO and Advanced Virgo. We search for short- (1 s) and intermediate-duration (500 s) signals, which include GW emission from a hypermassive NS or supramassive NS, respectively. We find no signal from the post-merger remnant. Our derived strain upper limits are more than an order of magnitude larger than those predicted by most models. For short signals, our best upper limit on the root sum square of the GW strain emitted from 1–4 kHz is  at 50% detection efficiency. For intermediate-duration signals, our best upper limit at 50% detection efficiency is  for a millisecond magnetar model, and  for a bar-mode model. These results indicate that post-merger emission from a similar event may be detectable when advanced detectors reach design sensitivity or with next-generation detectors.

KW - gravitational waves

KW - data analysis

KW - stars

KW - neutron

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DO - 10.3847/2041-8213/aa9a35

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VL - 851

JO - Astrophysics Journal Letters

T2 - Astrophysics Journal Letters

JF - Astrophysics Journal Letters

SN - 2041-8205

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ER -