Large-scale cosmic flows and moving dark energy

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Large-scale matter bulk flows with respect to the cosmic microwave background have very recently been detected on scales less than or similar to 100h(-1) Mpc and less than or similar to 300h(-1) Mpc by using two different techniques showing an excellent agreement in the motion direction. However, the unexpectedly large measured amplitudes are difficult to understand within the context of standard Lambda CDM cosmology. In this work we show that the existence of such a flow could be signaling the presence of moving dark energy at the time when photons decoupled from matter. We also comment on the relation between the direction of the CMB dipole and the preferred axis observed in the quadrupole in this scenario.
© 2009 IOP Publishing Ltd and SISSA. We would like to thank Fernando Atrio Barandela for useful discussions and suggestions. This work has been supported by DGICYT (Spain) project numbers FPA 2004-02602 and FPA 2005 02327, UCM-Santander PR34/07-15875, CAM/UCM910309 andMEC grant BES-2006-12059.
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[1] A. Dressler et al., Spectroscopy and photometry of elliptical galaxies. 1. A new distance estimator, Astrophys. J. 313 (1987) 42 [SPIRES]; D.S. Mathewson, V.L. Ford and M. Buchhorn, No back-side infall into the great attractor, Astrophys. J. 389 (1992) L5; J.A. Willick, The Las Campanas observatory/Palomar 10, 000 kilometer per second cluster survey. II. Constraints on large-scale streaming, Astrophys. J. 522 (1999) 647; S. Courteau et al., Shellflow. I. The convergence of the velocity field at 6000 kilometers per second, Astrophys. J. 544 (2000) 636 [astro-ph/0002420] [SPIRES]. [2] T.R. Lauer and M. Postman, The motion of the local group with respect to the 15, 000 kilometer per second Abell cluster inertial frame, Astrophys. J. 425 (1994) 418; M.J. Hudson and H. Ebeling, The environmental dependence of brightest cluster galaxies: implications for large-scale flows, Astrophys. J. 479 (1997) 621 [astro-ph/9611083] [SPIRES]; M.J. Hudson, R.J. Smith, J.R. Lucey, D.J. Schlegel and R.L. Davies, A large-scale bulk flow of galaxy clusters, Astrophys. J. 512 (1999) L79 [astro-ph/9901001] [SPIRES]. [3] A. Riess et al., The velocity field from type IA supernovae matches the gravity field from galaxy surveys,Astrophys. J. 488 (1997) L1 [astro-ph/9707261] [SPIRES]. [4] R. Juszkiewicz, et al., Evidence for a low-density universe from the relative velocities of galaxies, Science 287 (2000) 109 [astro-ph/0001041] [SPIRES]; H.A. Feldman, R. Watkins, A.L. Melott and S.W. Chambers, Optimal moments for the analysis of peculiar velocity surveys II: testing, Astrophys. J. 599 (2003) 820 [astro-ph/0304316] [SPIRES]; D.J. Radburn-Smith, J.R. Lucey and M.J. Hudson, A comparison of local type Ia supernovae with the IRAS PSCz gravity field, Mon. Not. Roy. Astron. Soc. 355 (2004) 1378; R.W. Pike and M.J. Hudson, Cosmological parameters from the comparison of the 2MASS gravity field with peculiar velocity surveys, Astrophys. J. 635 (2005) 11 [astro-ph/0511012] [SPIRES]; D. Sarkar, H.A. Feldman and R. Watkins, Bulk flows from velocity field surveys: a consistency check, Mon. Not. Roy. Astron. Soc. 375 (2007) 691 [astro-ph/0607426] [SPIRES]; R. Watkins and H.A. Feldman, Power spectrum shape from peculiar velocity data, Mon. Not. Roy. Astron. Soc. 379 (2007) 343 [astro-ph/0702751] [SPIRES]; Bulk flow and shear moments of the SFI++ survey, Mon. Not. Roy. Astron. Soc. 387 (2008) 825 n[arXiv:0802.2961] [SPIRES]. [5] A. Kashlinsky and F. Atrio-Barandela, Measuring cosmological bulk flows via the kinematic Sunyaev-Zeldovich effect in the upcoming cosmic microwave background maps, Astrophys. J. 536 (2000) L67 [astro-ph/0005197] [SPIRES]. [6] A. Kashlinsky, F. Atrio-Barandela, D. Kocevski and H. Ebeling, A measurement of large scale peculiar velocities of clusters of galaxies: technical details, Astrophys. J. 691 (2009) 1479 [arXiv:0809.3733] [SPIRES]; A measurement of large-scale peculiar velocities of clusters of galaxies: results and cosmological implications, arXiv:0809.3734 [SPIRES]. [7] M.S. Turner, A tilted universe (and other remnants of the preinflationary universe), Phys. Rev. D 44 (1991) 3737 [SPIRES]. [8] R. Watkins, H.A. Feldman and M.J. Hudson, Consistently large cosmic flows on scales of 100Mpc/h: a challenge for the standard _CDM cosmology, arXiv:0809.4041 [SPIRES]. [9] D. Lynden-Bell et al., Spectroscopy and photometry of elliptical galaxies. V — Galaxy streaming toward the new supergalactic center, Astrophys. J. 326 (1988) 19 [SPIRES]; A. Dresler, The supergalactic plane redshift survey — a candidate for the great attractor, Astrophys. J. 329 (1988) n519. [10] A.L. Maroto, Moving dark energy and the CMB dipole, JCAP 05 (2006) 015 [astro-ph/0512464] [SPIRES]; Dark energy in motion, Int. J. Mod. Phys. D 15 (2006) 2165 [astro ph/0605381] [SPIRES]; Dark energy rest frame and the CMB dipole, AIP Conf. Proc. 878 (2006) 240 [astro-ph/0609218] [SPIRES]; [11] J. Beltran Jimenez and A.L. Maroto, Cosmology with moving dark energy and the CMB quadrupole, Phys. Rev. D 76 (2007) 023003 [astro-ph/0703483] [SPIRES]. [12] E.F. Bunn, P. Ferreira and J. Silk, How anisotropic is our universe?, Phys. Rev. Lett. 77 (1996) 2883 [astro ph/9605123] [SPIRES]. [13] L. Campanelli, P. Cea and L. Tedesco, Ellipsoidal universe can solve the CMB quadrupole problem, Phys. Rev. Lett. 97 (2006) 131302 [Erratum ibid. 97 (2006) 209903] [astro ph/0606266] [SPIRES]. [14] S. Capozziello, A. Melchiorri and A. Schirone, Scaling dark energy, Phys. Rev. D 70 (2004) 101301 [astro ph/0408112] [SPIRES]; E.J. Copeland, A.R. Liddle and D. Wands, Exponential potentials and cosmological scaling solutions, Phys. Rev. D 57 (1998) 4686 [gr-qc/9711068] [SPIRES]; P.G. Ferreira and M. Joyce, Cosmology with a primordial scaling field, Phys. Rev. D 58 (1998) 023503 [astro-ph/9711102] [SPIRES]. [15] E.W. Kolb and M.S. Turner, The early universe, Addison Wesley, U.S.A. (1990). [16] K. Land and J. Magueijo, The axis of evil, Phys. Rev. Lett. 95 (2005) 071301 [astro ph/0502237] [SPIRES]; K. Land and J. Magueijo, The axis of evil revisited, Mon. Not. Roy. Astron. Soc. 378 (2007) 153 [astro-ph/0611518] [SPIRES]. [17] D.J. Schwarz, G.D. Starkman, D. Huterer and C.J. Copi, Is the low-l microwave background cosmic?, Phys. Rev. Lett. 93 (2004) 221301 [astro-ph/0403353] [SPIRES]; C. Copi, D. Huterer, D. Schwarz and G. Starkman, The Uncorrelated Universe: statistical Anisotropy and the Vanishing Angular Correlation Function in WMAP Years 1-3, Phys. Rev. D 75 (2007) 023507 [astro-ph/0605135] [SPIRES].