Constraining MOND using the vertical motion of stars in the solar neighbourhood

Ben Margalit; Nir J. Shaviv

doi:10.1093/mnras/stv2721

Constraining MOND using the vertical motion of stars in the solar neighbourhood

Ben Margalit^*, Nir J. Shaviv

^*Corresponding author for this work

Racah Institute of Physics

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

6 Scopus citations

Abstract

Stars with a different vertical motion relative to the Galactic disc have a different average acceleration. According to modified Newtonian dynamics (MOND) theories, they should therefore have a different average orbital velocity while revolving around the Milky Way. We show that this property can be used to constrain MOND theories by studying stars in the local neighbourhood. With the Hipparcos (Perryman et al. 1997) data set we can only place marginal constraints. However, the forthcoming Gaia (Perryman et al. 2001) catalogue with its significantly fainter cutoff should allow placing a stringent constraint.

Original language	English
Pages (from-to)	1163-1171
Number of pages	9
Journal	Monthly Notices of the Royal Astronomical Society
Volume	456
Issue number	2
DOIs	https://doi.org/10.1093/mnras/stv2721
State	Published - 2016

Bibliographical note

Publisher Copyright:
© 2015 The Authors. Published by Oxford University Press.

Keywords

Galaxy: disc
Galaxy: kinematics and dynamics
Solar neighbourhood

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10.1093/mnras/stv2721

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abstract = "Stars with a different vertical motion relative to the Galactic disc have a different average acceleration. According to modified Newtonian dynamics (MOND) theories, they should therefore have a different average orbital velocity while revolving around the Milky Way. We show that this property can be used to constrain MOND theories by studying stars in the local neighbourhood. With the Hipparcos (Perryman et al. 1997) data set we can only place marginal constraints. However, the forthcoming Gaia (Perryman et al. 2001) catalogue with its significantly fainter cutoff should allow placing a stringent constraint.",

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Constraining MOND using the vertical motion of stars in the solar neighbourhood

Abstract

Bibliographical note

Keywords

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