Journal Article

Does the Universe accelerate equally in all directions?

Ryan Cooke and Donald Lynden-Bell

in Monthly Notices of the Royal Astronomical Society

Published on behalf of The Royal Astronomical Society

Volume 401, issue 3, pages 1409-1414
Published in print January 2010 | ISSN: 0035-8711
Published online January 2010 | e-ISSN: 1365-2966 | DOI:
Does the Universe accelerate equally in all directions?

More Like This

Show all results sharing this subject:

  • Astronomy and Astrophysics


Show Summary Details


We employ the Union compilation of Type Ia supernovae (SNe) with a maximum likelihood analysis to search for a dark energy dipole. To approach this problem, we present a simple, computationally efficient and largely model-independent method. We opted to weight each SN by its observed error estimate, so that poorly measured SNe that deviate substantially from the Hubble law do not produce spurious results. We find, with very low significance, a dipole in the cosmic acceleration directed roughly towards the cosmic microwave background dipole, but this is almost certainly coincidental.

Keywords: supernovae: general; cosmology: observations; distance scale

Journal Article.  3854 words.  Illustrated.

Subjects: Astronomy and Astrophysics

Full text: subscription required

How to subscribe Recommend to my Librarian

Users without a subscription are not able to see the full content. Please, subscribe or login to access all content.