On the origin of the local group's peculiar velocity

@article{Kocevski2006OnTO,
  title={On the origin of the local group's peculiar velocity},
  author={Dale D. Kocevski and Harald Ebeling},
  journal={The Astrophysical Journal},
  year={2006},
  volume={645},
  pages={1043-1053}
}
We aim to settle the debate regarding the fraction of the Local Group's peculiar velocity that is induced by structures beyond the Great Attractor by calculating the dipole anisotropy of the largest, all-sky, truly X-ray-selected cluster sample compiled to date. The sample is the combination of the REFLEX catalog in the southern hemisphere, the eBCS sample in the north, and the CIZA survey in the Galactic plane. The composite REFLEX+eBCS+CIZA sample overcomes many of the problems inherent to… Expand

Figures and Tables from this paper

Motion of the Local Group as a cosmological probe
In this thesis, we use the motion of the Local Group of galaxies (LG) through the Universe to measure the cosmological parameter of non-relativistic matter density, Omega_m. For that purpose, weExpand
Our Peculiar Motion Away from the Local Void
The peculiar velocity of the Local Group of galaxies manifested in the cosmic microwave background dipole is found to decompose into three dominant components. The three components are clearlyExpand
Is the 2MASS clustering dipole convergent
There is a long-standing controversy about the convergence of the dipole moment of the galaxy angular distribution (the so-called clustering dipole). We study the growth of the clustering dipole ofExpand
The PSCz dipole revisited
We re-examine the gravitational acceleration (dipole) induced on the Local Group of galaxies by the Infrared Astronomical Satellite (IRAS) galaxy distribution of the Point Source Catalog redshiftExpand
A SYSTEMATIC X-RAY SEARCH FOR CLUSTERS OF GALAXIES BEHIND THE MILKY WAY. II. THE SECOND CIZA SUBSAMPLE
We present the latest results of the Clusters in the Zone of Avoidance (CIZA) survey, which is mapping large-scale structures behind the Milky Way by performing the first systematic search for galaxyExpand
A measurement of large-scale peculiar velocities of clusters of galaxies: technical details
This paper presents detailed analysis of large-scale peculiar motions derived from a sample of ~700 X-ray clusters and cosmic microwave background (CMB) data obtained with WMAP. We use the kinematicExpand
On the Recovery of the Local Group Motion from Galaxy Redshift Surveys
There is an ∼150 km s{sup –1} discrepancy between the measured motion of the Local Group (LG) of galaxies with respect to the cosmic microwave background and the linear theory prediction based on theExpand
IS THE TWO MICRON ALL SKY SURVEY CLUSTERING DIPOLE CONVERGENT
There is a long-standing controversy about the convergence of the dipole moment of the galaxy angular distribution (the so-called clustering dipole). Is the dipole convergent at all, and if so, whatExpand
THREE-DIMENSIONAL VELOCITY AND DENSITY RECONSTRUCTIONS OF THE LOCAL UNIVERSE WITH COSMICFLOWS-1
This paper presents an analysis of the local peculiar velocity field based on the Wiener Filter (WF) reconstruction method. We used our currently available catalog of distance measurements containingExpand
The Norma cluster (ACO 3627) – I. A dynamical analysis of the most massive cluster in the Great Attractor
A detailed dynamical analysis of the nearby rich Norma cluster (ACO 3627) is presented. From radial velocities of 296 cluster members, we find a mean velocity of 4871 ± 54 km s −1 and a velocityExpand
...
1
2
3
4
5
...

References

SHOWING 1-10 OF 60 REFERENCES
The dipole anisotropy of the first all-sky X-ray cluster sample
We combine the recently published CIZA galaxy cluster catalogue with the XBACs cluster sample to produce the first all-sky catalogue of X-ray clusters in order to examine the origins of the LocalExpand
The supergalactic plane redshift survey - A candidate for the great attractor
Redshift measurements, nearly 600 of which are new, are compiled for about 900 galaxies in a survey toward the apex of the large-scale streaming flow for ellipticals. The velocity histogram showsExpand
Seeking the Local Convergence Depth: The Abell Cluster Dipole Flow to 200 h -1 Mpc
We have obtained new Tully-Fisher (TF) peculiar velocity measurements for 52 Abell galaxy clusters distributed throughout the sky between ~50 and 200 h-1 Mpc. The measurements are based on I-bandExpand
A Large-scale Bulk Flow of Galaxy Clusters
We report first results from the Streaming Motions of Abell Clusters (SMAC) project, an all-sky Fundamental Plane survey of 699 early-type galaxies in 56 clusters between ~3000 and ~14,000 km s-1.Expand
A nearby massive galaxy cluster behind the Milky Way
THE recession velocities of relatively nearby galaxies show systematic deviations from a uniform expansion field. These deviations indicate the presence of the 'Great Attractor'—a large concentrationExpand
Likelihood analysis of the Local Group acceleration
We compute the acceleration on the Local Group using 11206 IRAS galaxies from the recently completed all-sky PSCz redshift survey. Measuring the acceleration vector in redshift space generatesExpand
The peculiar motions of early-type galaxies in two distant regions — VII. Peculiar velocities and bulk motions
We present peculiar velocities for 85 clusters of galaxies in two large volumes at distances between 6000 and 15 000 km s−1 in the directions of Hercules–Corona Borealis and Perseus–Pisces–Cetus (theExpand
The peculiar velocity field in the local supercluster
A general method of estimating the peculiar velocity field expected, under the gravitational instability picture, around the outer parts of a mass concentration like a cluster of galaxies is derivedExpand
Density and velocity fields from the PSCz survey
We present the results for the predicted density and peculiar velocity fields and the dipole from the PSCz survey of 15,000 IRAS galaxies over 84% of the sky. We find a significant component to theExpand
No Hubble Bubble in the Local Universe
Zehavi et al. have suggested that the Hubble flow within 70 h-1 Mpc may be accelerated by the existence of a void centered on the Local Group. Its underdensity would be ~20%, which would result in aExpand
...
1
2
3
4
5
...