Zobrazeno 1 - 10
of 72
pro vyhledávání: '"Colin, Jacques"'
Autor:
Secrest, Nathan, von Hausegger, Sebastian, Rameez, Mohamed, Mohayaee, Roya, Sarkar, Subir, Colin, Jacques
Publikováno v:
Astrophys. J. Lett. 908 (2021) L51
We study the large-scale anisotropy of the Universe by measuring the dipole in the angular distribution of a flux-limited, all-sky sample of 1.36 million quasars observed by the Wide-field Infrared Survey Explorer (WISE). This sample is derived from
Externí odkaz:
http://arxiv.org/abs/2009.14826
We have shown (Colin et al., 2019) that the acceleration of the Hubble expansion rate inferred from Type Ia supernovae (SNe Ia) is, at $3.9\sigma$ significance, a dipole approximately aligned with the CMB dipole, while its monopole component, which c
Externí odkaz:
http://arxiv.org/abs/1912.04257
Publikováno v:
A&A 631, L13 (2019)
Observations reveal a `bulk flow' in the local Universe which is faster and extends to much larger scales than is expected around a typical observer in the standard $\Lambda$CDM cosmology. This is expected to result in a scale-dependent dipolar modul
Externí odkaz:
http://arxiv.org/abs/1808.04597
We propose that the accretion of a dwarf spheroidal galaxy provides a common origin for the giant southern stream and the warp of M31. We run about 40 full N-body simulations with live M31, infalling galaxies with varying masses and density profiles,
Externí odkaz:
http://arxiv.org/abs/1307.5044
Autor:
Sadoun, Raphael, Colin, Jacques
We find evidence that the mass MBH of central supermassive black holes (SMBHs) correlates with the velocity dispersion sigma_GC of globular cluster systems of their host galaxies. This extends the well-known MBH - sigma_sph relation between black hol
Externí odkaz:
http://arxiv.org/abs/1204.0144
Dual AGNs are natural byproducts of hierarchical mergers of galaxies in the LambdaCDM cosmogony. Recent observations have shown that only a small fraction (~ 0.1%-1%) of AGNs at redshift z<~ 0.3 are dual with kpc-scale separations, which is rather lo
Externí odkaz:
http://arxiv.org/abs/1105.1963
Publikováno v:
Mon. Not. Roy. Astron. Soc. 414 (2011) 264-271
The question of the transition to global isotropy from our anisotropic local Universe is studied using the Union 2 catalogue of Type Ia supernovae (SNe Ia). We construct a "residual" statistic sensitive to systematic shifts in their brightness in dif
Externí odkaz:
http://arxiv.org/abs/1011.6292
Autor:
Mohayaee, Roya, Colin, Jacques
Publikováno v:
New Astron.Rev.51:898-905,2008
Anisotropic emission of gravitational waves during the merger or formation of black holes can lead to the ejection of these black holes from their host galaxies. A recoiled black hole which moves on an almost radial bound orbit outside the virial rad
Externí odkaz:
http://arxiv.org/abs/0802.2534
A new scenario for the emission of high-energy gamma-rays from dark matter annihilation around massive black holes is presented. A black hole can leave its parent halo, by means of gravitational radiation recoil, in a merger event or in the asymmetri
Externí odkaz:
http://arxiv.org/abs/0709.3321
Publikováno v:
International Journal of Physical Distribution & Logistics Management, 2011, Vol. 41, Issue 3, pp. 228-252.
Externí odkaz:
http://www.emeraldinsight.com/doi/10.1108/09600031111123778
