A useful guide for gravitational wave observers to test modified gravity models

E. O. Kahya

doi:10.1016/j.physletb.2011.05.073

A useful guide for gravitational wave observers to test modified gravity models

E. O. Kahya^*

^*Corresponding author for this work

Friedrich Schiller University Jena

Research output: Contribution to journal › Article › peer-review

14 Citations (Scopus)

Abstract

We present an extension of a previously suggested test of all modified theories of gravity that would reproduce MOND at low accelerations. In a class of models, called "dark matter emulators", gravitational waves and other particles couple to different metrics. This leads to a detectable time lag between their detection at Earth from the same source. We calculate this time lag numerically for any event that occurs in our galaxy up to 400 kpc, and present a graph of this possible time lag. This suggests that, gravitational wave observers might have to consider the possibility of extending their analysis to non-coincident gravitational and electromagnetic signals, and the graph that we present might be a useful guideline for this effort.

Original language	English
Pages (from-to)	291-295
Number of pages	5
Journal	Physics Letters, Section B: Nuclear, Elementary Particle and High-Energy Physics
Volume	701
Issue number	3
DOIs	https://doi.org/10.1016/j.physletb.2011.05.073
Publication status	Published - 11 Jul 2011
Externally published	Yes

Funding

I am grateful to Richard Woodard and Shantanu Desai for stimulating discussions. I would like to thank Szabi Marka for suggesting this problem to me. I also would like to thank Hongsheng Zhao and Anatoly Klypin for illuminating comments and discussions. I am also grateful for the hospitality of the Physics Department of Koç University. This work was partially supported by DFG-Research Training Group “Quantum and Gravitational Fields” GRK 1523/1 , by Marie Curie Grant IRG-247803 .

Funders	Funder number
DFG-Research	GRK 1523/1
Seventh Framework Programme	247803
Marie Curie	IRG-247803

Keywords

Cold dark matter
Gravitational waves
MOND
Modified gravity models

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10.1016/j.physletb.2011.05.073

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A useful guide for gravitational wave observers to test modified gravity models

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