GW170817: observation of gravitational waves from a binary neutron star inspiral
Citations
171 citations
171 citations
Cites background or methods or result from "GW170817: observation of gravitatio..."
...…in GW parameter estimation results with the employed waveform models constitute only a small fraction of the total uncertainty budget (see, e.g., Abbott et al. 2016a, 2017c), and given the large statistical uncertainties, the ignored effects in waveform modeling are not expected to cause a…...
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...An understanding of GW selection effects (Abbott et al. 2017b; Chen et al. 2018; Mandel et al. 2019) and features of galaxy catalogs, such as their incompleteness and measurement uncertainties, is necessary for an accurate measurement of H0....
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...The GW signature from the binary neutron star (BNS) merger 7 GW170817, along with its coincident electromagnetic (EM) transient associated with the host galaxy NGC4993, led to a first standard-siren measurement of H0 (Abbott et al. 2017b)....
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...The GW standard-siren measurement in Abbott et al. (2017b) is broadly consistent with other measurements....
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...…probability distribution obtained from the BNS event GW170817 using the redshift of the host galaxy inferred from the observed EM counterpart (Abbott et al. 2017b), along with constraints using galaxy catalogs for the BBH events observed by Advanced LIGO and Virgo in their first and second…...
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171 citations
Cites background from "GW170817: observation of gravitatio..."
...Thus, if the gamma-rays observed in coincidence with GW170817 (Goldstein et al. 2017; Savchenko et al. 2017; Abbott et al. 2017a) are in some way associated with an off-axis−but otherwise typical−short GRB jet, then the formation of a black hole must have occurred prior to the arrival of the gamma-rays, setting an upper limit of trem ....
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...Our analytic and numerical results at fixed Ω can be therefore used to approximate what type of magnetar remnant, if any, can explain all three key properties (mass, velocity, composition) the blue KN from GW170817 (Fig....
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...10) also plays a role in the collapse time, then a merger remnant of total mass otherwise similar to that in GW170817, but with a stronger magnetic field B, will produce both a higher KN ejecta velocity vB ∝ B2/3 and a shorter lifetime trem ∝ B−1 ∝ v−3/2B ; the latter may correlate also with the timescale of the observed gamma-ray burst, assuming it is powered by an ultra-relativistic jet which is generated soon after black hole formation....
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...Though not available for GW170817, such early observations may be possible for future GW-detected mergers, such as those which occur above the North American continent at night (e.g. Kasliwal & Nissanke 2014)....
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...The local (z = 0) rate of binary NS mergers as measured by Advanced LIGO after GW170817 is RBNS = 1540+3200−1220 Gpc−3 yr−1, while the observed rate of short GRBs is RSGRB ≈ 2−6 Gpc−3 yr−1 (Wanderman & Piran 2015)....
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170 citations
170 citations
Cites background or methods or result from "GW170817: observation of gravitatio..."
...By combining the properties of GW170817 with analytical calculations similar to the ones described above, several studies have demonstrated that NS-NS mergers can synthesize enough r-process material to be the dominant site in the Milky Way (Abbott et al. 2017a; Cowperthwaite et al. 2017; Chornock et al. 2017; Gompertz et al. 2017; Kasen et al. 2017; Rosswog et al. 2017; Tanaka et al. 2017a; Wang et al. 2017; Hotokezaka et al. 2018)....
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...Those models can be confronted with the observed merger rate estimated from several known NS-NS systems in the Milky Way (21+28−14 Myr −1, Kim et al. 2015)....
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...Those rates are calibrated to reproduce the [Eu/Fe]2 abundances observed in the Milky Way, assuming NS-NS mergers are the only source of r-process elements....
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...In Côté et al. (2017a, C17a), we derived the rate of NS-NS mergers required in galactic chemical evolution (GCE) studies in order to match the amount of europium (Eu) observed in the Milky Way, assuming NS-NS mergers are the dominant r-process site....
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...The uncertain inferred neutron star mass ratios range from 0.4 to 1.0 (Abbott et al. 2017b)....
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