The reliability of the low-latency estimation of binary neutron star chirp mass
The LIGO and Virgo Collaborations currently conduct searches for gravitational waves from compact binary coalescences in real-time. For promising candidate events, a sky map and distance estimation are released in low-latency, to facilitate their electromagnetic follow-up. Currently, no information is released about the masses of the compact objects. Recently, Margalit and Metzger (2019) have suggested that knowledge of the chirp mass of the detected binary neutron stars could be useful to prioritize the electromagnetic follow-up effort, and have urged the LIGO-Virgo collaboration to release chirp mass information in low-latency. One might worry that low-latency searches for compact binaries make simplifying assumptions that could introduce biases in the mass parameters: neutron stars are treated as point particles with dimensionless spins below $0.05$ and perfectly aligned with the orbital angular momentum. Furthermore, the template bank used to search for them has a finite resolution. In this paper we show that none of these limitations can introduce chirp mass biases larger than $\sim 10^{-3}~M_\odot$. Even the total mass is usually accurately estimated, with biases smaller than 6\%. The mass ratio and effective inspiral spins, on the other hand, can suffer from more severe biases.
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08/12/19 06:08PM
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straybrid: RT @arxiv_org: The reliability of the low-latency estimation of binary neutron star chirp mass. https://t.co/T9gGLjRWKs https://t.co/xhG9xj…
arxiv_org: The reliability of the low-latency estimation of binary neutron star chirp mass. https://t.co/T9gGLjRWKs https://t.co/xhG9xjltxK
cplberry: RT @sylvia_bisco: My first first-author paper is on the arXiv today! https://t.co/gE7z1E8zo1 With @sasomao and @CJHaster we investigated ho…
Jukebox_jackie: RT @sylvia_bisco: My first first-author paper is on the arXiv today! https://t.co/gE7z1E8zo1 With @sasomao and @CJHaster we investigated ho…
MITKavli: RT @sylvia_bisco: My first first-author paper is on the arXiv today! https://t.co/gE7z1E8zo1 With @sasomao and @CJHaster we investigated ho…
RelativityPaper: The reliability of the low-latency estimation of binary neutron star chirp mass. https://t.co/JsPWZtkh5P
astro_jje: RT @sylvia_bisco: My first first-author paper is on the arXiv today! https://t.co/gE7z1E8zo1 With @sasomao and @CJHaster we investigated ho…
maxisi: RT @sylvia_bisco: My first first-author paper is on the arXiv today! https://t.co/gE7z1E8zo1 With @sasomao and @CJHaster we investigated ho…
NZMason: RT @sylvia_bisco: My first first-author paper is on the arXiv today! https://t.co/gE7z1E8zo1 With @sasomao and @CJHaster we investigated ho…
farrwill: RT @sylvia_bisco: My first first-author paper is on the arXiv today! https://t.co/gE7z1E8zo1 With @sasomao and @CJHaster we investigated ho…
ZugarPlume: RT @sylvia_bisco: My first first-author paper is on the arXiv today! https://t.co/gE7z1E8zo1 With @sasomao and @CJHaster we investigated ho…
duetosymmetry: RT @sylvia_bisco: My first first-author paper is on the arXiv today! https://t.co/gE7z1E8zo1 With @sasomao and @CJHaster we investigated ho…
sylvia_bisco: My first first-author paper is on the arXiv today! https://t.co/gE7z1E8zo1 With @sasomao and @CJHaster we investigated how well the chirp mass of binary neutron stars can be determined by low latency gravitational wave searches 1/n
CJHaster: RT @bluekilonova: Nice work by S. Biscoveanu (student of @sasomao) and @CJHaster https://t.co/ywt01EjFAP showing its possible to ascertai…
bluekilonova: Nice work by S. Biscoveanu (student of @sasomao) and @CJHaster https://t.co/ywt01EjFAP showing its possible to ascertain the total binary mass in a NS-NS merger GW in low latency for reasonable assumptions. Crucial because Mtot has strong leverage on the EM properties.
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