Astronomy and Astrophysics – Astrophysics
Scientific paper
2002-05-16
Astronomy and Astrophysics
Astrophysics
41 Pages, 11 figures, published in ApJ, 571, 585. Reference added, Figure 2 axis relabeled
Scientific paper
10.1086/340063
We develop an analytical formalism that is suitable for studying inhomogeneous structure formation, by studying the joint statistics of dark matter halos forming at two points. Extending the Bond et al. (1991) derivation of the mass function of virialized halos, based on excursion sets, we derive an approximate analytical expression for the ``bivariate'' mass function of halos forming at two redshifts and separated by a fixed comoving Lagrangian distance. Our approach also leads to a self-consistent expression for the nonlinear biasing and correlation function of halos, generalizing a number of previous results including those by Kaiser (1984) and Mo & White (1996). We compare our approximate solutions to exact numerical results within the excursion-set framework and find them to be consistent to within 2% over a wide range of parameters. Our formalism can be used to study various feedback effects during galaxy formation analytically, as well as to simply construct observable quantities dependent on the spatial distribution of objects. A code that implements our method is publicly available at http://www.arcetri.astro.it/~evan/Gemini
Barkana Rennan
Scannapieco Evan
No associations
LandOfFree
An Analytical Approach to Inhomogeneous Structure Formation does not yet have a rating. At this time, there are no reviews or comments for this scientific paper.
If you have personal experience with An Analytical Approach to Inhomogeneous Structure Formation, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and An Analytical Approach to Inhomogeneous Structure Formation will most certainly appreciate the feedback.
Profile ID: LFWR-SCP-O-652754