Constraining extra-spatial dimensions with observations of GW170817 - INSPIRE

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Constraining extra-spatial dimensions with observations of GW170817

Kabir Chakravarti
(
- Pune U.
)
,
Sumanta Chakraborty
(
- IACS, Kolkata
)
,
Khun Sang Phukon
(
- Indian Inst. Tech., Kanpur
)
,
Sukanta Bose
(
- Washington State U.
)
,
Soumitra SenGupta
(
- IACS, Kolkata
)

Mar 25, 2019

15 pages

Published in:

Class.Quant.Grav. 37 (2020) 10, 105004

Published: Apr 27, 2020

e-Print:

1903.10159 [gr-qc]

DOI:

10.1088/1361-6382/ab8355 (publication)

Report number:

LIGO-P1900080

View in:

ADS Abstract Service

reference search55 citations

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Abstract: (IOP)

We derive the modifications introduced by extra-spatial dimensions beyond the four dimensional spacetime on the macroscopic properties of neutron stars, which in turn affect the gravitational wave spectrum of their binaries. It turns out that the mass–radius relation of the neutron stars, and their tidal deformability, are affected non-trivially by the presence of extra dimensions, and can be used to constrain parameters associated with those dimensions. Implications for I–Love–Q universality relations are also discussed and utilized to obtain a constraint on one such parameter. Importantly, we show, for the first time, that measurements of the component masses and tidal deformabilities of the binary neutron star system GW170817, constrain the brane tension in the single brane-world model of Randall and Sundrum to be greater than 35.1 GeV4. This work opens up the possibility of making such a constraint more robust by improving the modelling of binaries on the brane in the future.

Note:

Published Version, 17 pages, 5 figures

neutron star: binary
gravitational radiation: emission
gravitational radiation: direct detection
gravitational radiation: spectrum
membrane model: tension
space-time: higher-dimensional

References(61)

Figures(6)

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