10.6k citations
Counting papers with at most 25 authors, so collaboration author lists do not stand in for the people here.
- Max Planck SocietyDE1.2k papers
- Centre National de la Recherche ScientifiqueFR1k papers
- National Institute for AstrophysicsIT820 papers
- European Southern ObservatoryCL784 papers
- Center for Astrophysics Harvard & SmithsonianUS755 papers
- Max Planck Institute for Extraterrestrial PhysicsDE722 papers
- Ludwig-Maximilians-Universität MünchenDE639 papers
- Space Research InstituteRU602 papers
- Osservatorio Astronomico di PadovaIT600 papers
- California Institute of TechnologyUS581 papers
- Trieste Astronomical ObservatoryIT566 papers
- University of California, BerkeleyUS566 papers
18 papers · 2 filters
Substructures and Density Profiles of Clusters in Models of Galaxy Formation
Y. P. Jing, H. J. Mo, G. Boerner +1
In this paper we investigate, using high resolution N-body simulations, the density profiles and the morphologies of galaxy clusters in seven models of structure formation. We show…
Cosmogony of Generic Structures
T. Buchert
The problem of formation of generic structures in the Universe is addressed, whereby first the kinematics of inertial continua for coherent initial data is considered. The generali…
Cluster mass estimates from weak lensing
Matthias Bartelmann
The reliability of cluster lens reconstruction techniques based on weak lensing is studied in terms of the accuracy of their reproduction of the total cluster mass as a function of…
The lens parallax method: determining the redshifts of the faint blue galaxies through gravitational lensing
Ramesh Narayan, Matthias Bartelmann
We propose a new technique, which we call the lens parallax method, to determine simultaneously the redshift distribution of the faint blue galaxies and the mass distribution of fo…
Substructures of Clusters and Cosmological Models
Y. P. Jing, H. J. Mo, G. Boerner +1
We investigate, using high resolution N-body simulations, the density profiles and the morphologies of galaxy clusters in three models of structure formation. We show that these pr…
Gravitational Lensing and the Mass Distribution of Clusters
Matthias Bartelmann, Ramesh Narayan
We review and discuss information on the mass distribution of galaxy clusters obtained from gravitational lensing.
Momentum transfer by an internal source of ionizing radiation - an important feedback process during galaxy formation ?!
Martin G. Haehnelt
The role of momentum transfer (``radiation pressure'') due to an internal source of ionizing radiation for the formation of baryonic structures is investigated. Fully-ionized self-…
When Does the Richardson-Lucy Deconvolution Converge ?
Hongguang Bi, Gerhard Boerner
(\rl = Richardson-Lucy) We propose a simulation-based bootstrap method to access global significance levels of deconvolution models in the \rl and other iterative restoration algor…
Cluster lens reconstruction using only observed local data
Peter Schneider
The reconstruction of the density profile in clusters of galaxies from the distortion of the images of faint background galaxies is reconsidered. The inversion formula of Kaiser \&…
The Formation of Disk Galaxies in a Cosmological Context: Structure and Kinematics
Matthias Steinmetz, Ewald Mueller
We present results concerning the internal structure and kinematics of disk galaxies formed in cosmologically motivated simulations. The calculations include dark matter, gas dynam…
Lyman alpha absorption at low redshifts and hot gas in galactic haloes
H. J. Mo
Motivated by recent observation of Lanzetta et al. that most luminous galaxies at low redshifts produce $\lya$ absorption at impact parameter $l\lsim 160 \kpch$, we propose that th…
An Accelerated Lambda Iteration Method for Multilevel Radiative Transfer III. Noncoherent Electron Scattering
G. B. Rybicki, D. G. Hummer
Since the mass of the electron is very small relative to atomic masses, Thomson scattering of low-energy photons () produces thermal Doppler frequency shifts that are…
Light Propagation in Arbitrary Spacetimes and the Gravitational Lens Approximation
Stella Seitz, Peter Schneider, Juergen Ehlers
We reformulate the transport equation which determines the size, shape and orientation of infinitesimal light beams in arbitrary spacetimes. The behaviour of such light beams near…
Diffuse X-Ray Emission Around High-Redshift, Radio-Loud Qsos
Matthias Bartelmann, Peter Schneider, Guenther Hasinger
We announce the detection of correlations on angular scales of $\ga10'$ between optically bright, high-redshift, radio-loud QSOs with diffuse X-ray emission seen by ROSAT in the {\…
On the spin parameter of dark-matter haloes
Matthias Steinmetz, Matthias Bartelmann
The study by White (1984) on the growth of angular momentum in dark haloes is extended towards a more detailed investigation of the spin parameter .…
On the Formation of Elliptical Galaxies
Andi Burkert
It is shown that the violent relaxation of dissipationless stellar systems leads to universal de Vaucouleurs profiles only outside 1.5 effective radii . Inside the s…
Simulating Self-gravitating Hydrodynamic Flows
Ewald Mueller, Matthias Steinmetz
An efficient algorithm for solving Poisson's equation in two and three spatial dimensions is discussed. The algorithm, which is described in detail, is based on the integral form o…
The Formation of Galaxies: A Challenge for Supercomputers -- a Simple Task for GRAPE ?
Matthias Steinmetz
We present numerical simulations of galaxy formation, one of the most challenging problems in computational astrophysics. The key point in such simulations is the efficient solutio…