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Modified gravity and large scale flows

Mould, Jeremy; Colless, Matthew; Erdoğdu, Pirin; Jones, Heath; Lucey, John; Ma, Yin-Zhe; Magoulas, Christina; Springob, Christopher M

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Authors

Jeremy Mould

Matthew Colless

Pirin Erdoğdu

Heath Jones

Yin-Zhe Ma

Christina Magoulas

Christopher M Springob



Abstract

Reconstruction of the local velocity field from the overdensity field and a gravitational acceleration that falls off from a point mass as r −2 yields velocities in broad agreement with peculiar velocities measured with galaxy distance indicators. MONDian gravity does not. To quantify this, we introduce the velocity angular correlation function as a diagnostic of peculiar velocity field alignment and coherence as a function of scale. It is independent of the bias parameter of structure formation in the standard model of cosmology and the acceleration parameter of MOND. A modified gravity acceleration consistent with observed large scale structure would need to asymptote to zero at large distances more like r −2, than r −1.

Citation

Mould, J., Colless, M., Erdoğdu, P., Jones, H., Lucey, J., Ma, Y., …Springob, C. M. (2015). Modified gravity and large scale flows. Astrophysics and Space Science, 357(2), Article 162. https://doi.org/10.1007/s10509-015-2351-2

Journal Article Type Article
Acceptance Date Apr 11, 2015
Online Publication Date May 20, 2015
Publication Date 2015-06
Deposit Date Dec 22, 2015
Publicly Available Date Mar 28, 2024
Journal Astrophysics and Space Science
Print ISSN 0004-640X
Electronic ISSN 1572-946X
Publisher Springer
Peer Reviewed Peer Reviewed
Volume 357
Issue 2
Article Number 162
DOI https://doi.org/10.1007/s10509-015-2351-2
Related Public URLs http://arxiv.org/abs/1504.03027

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