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
96 papers · 1 filter
A Fresh Look at Axions and SN 1987A
Wolfgang Keil, Hans-Thomas Janka, David N. Schramm +3
We re-examine the very stringent limits on the axion mass based on the strength and duration of the neutrino signal from SN 1987A, in the light of new measurements of the axial-vec…
Age of the Universe: Influence of the Inhomogeneities on the global Expansion-Factor
H. Russ, M. H. Soffel, M. Kasai +1
For the first time we calculate quantitatively the influence of inhomogeneities on the global expansion factor by averaging the Friedmann equation. In the framework of the relativi…
Primordial Nucleosynthesis with Massive Tau Neutrinos
J. B. Rehm, G. G. Raffelt, A. Weiss
A massive long-lived tau neutrino in the MeV regime modifies the primordial light-element abundances predicted by big-bang nucleosynthesis (BBN) calculations. This effect has been…
Anisotropies in the Distribution of Satellite Galaxies
Dennis Zaritsky, Rodney Smith, Carlos S. Frenk +1
We find that satellites of isolated disk galaxies at projected radii between 300 and 500 kpc are distributed asymmetrically about the parent galaxy and aligned preferentially with…
More Satellites of Spiral Galaxies
Dennis Zaritsky, Rodney Smith, Carlos Frenk +1
We present a revised and expanded catalog of satellite galaxies of a set of isolated spiral galaxies similar in luminosity to the Milky Way. This sample of 115 satellites, 69 of wh…
On the Fundamental Properties of Dynamically Hot Galaxies
Alexei G. Kritsuk
A two-component isothermal equilibrium model is applied to reproduce basic structural properties of dynamically hot stellar systems immersed in their massive dark haloes. The origi…
Measuring Omega
Avishai Dekel, David Burstein, Simon D. M. White
We were asked to debate the value of the cosmological mass-density parameter Omega. Is Omega_m=1 in accordance with the simplest model? Is Omega_m much smaller as indicated by some…
Nucleosynthesis in neutrino-driven winds: I. The physical conditions
Y. -Z. Qian, S. E. Woosley
During the first 20 seconds of its life, the enormous neutrino luminosity of a neutron star drives appreciable mass loss from its surface. Previous investigations have shown that t…
Coalescing neutron stars -- gravitational waves from polytropic models
M. Ruffert, M. Rampp, H. -Th. Janka
The dynamics, time evolution of the mass distribution, and gravitational wave signature of coalescing neutron stars described by polytropes are compared with three simulations publ…
Where Does Dark Matter Become Important in Elliptical Galaxies?
H. -W. Rix
Recent results from gravitational lensing are combined with new modeling of the stellar velocity distributions in nearby galaxies to probe the connection between the luminous and t…
How to measure CMB power spectra without losing information
Max Tegmark
A new method for estimating the angular power spectrum C_l from cosmic microwave background (CMB) maps is presented, which has the following desirable properties: (1) It is unbeata…
How to make maps from CMB data without losing information
Max Tegmark
The next generation of CMB experiments can measure cosmological parameters with unprecedented accuracy - in principle. To achieve this in practice when faced with such gigantic dat…
A Universal Density Profile from Hierarchical Clustering
Julio F. Navarro, Carlos S. Frenk, Simon D. M. White
We use high-resolution N-body simulations to study the equilibrium density profiles of dark matter halos in hierarchically clustering universes. We find that all such profiles have…
The Rise and Fall of Satellites in Galaxy Clusters
Giuseppe Tormen
We use N-body simulations to study the infall of dark matter haloes onto rich clusters of galaxies. After identification of all cluster progenitors in the simulations, we select th…
Cosmological Model Predictions for Weak Lensing: Linear and Nonlinear Regimes
Bhuvnesh Jain, Uros Seljak
Weak lensing by large scale structure induces correlated ellipticities in the images of distant galaxies. The two-point correlation is determined by the matter power spectrum along…
Broad band high energy observations of the superluminal jet source GRO J1655-40 during an outburst
S. N. Zhang, K. Ebisawa, R. Sunyaev +7
The X-ray/radio transient superluminal jet source GRO J1655-40 was recently suggested to contain a black hole from optical observations. Being a relatively close-by system (d \sim…
Numerical Models of Protoneutron Stars and Type-II Supernovae --- Recent Developments
H. -Thomas Janka
The results of recent multi-dimensional simulations of type-II supernovae are reviewed. They show that convective instabilities in the collapsed stellar core might play an importan…
Ledoux-Convection in Protoneutron Stars --- a Clue to Supernova Nucleosynthesis?
Wolfgang Keil, H. -Thomas Janka, Ewald M"uller
Two-dimensional hydrodynamical simulations of the deleptonization of a newly formed neutron star were performed. Driven by negative lepton fraction and entropy gradients, convectio…
Search for correlations between COBE DMR and ROSAT PSPC All-Sky survey data
R. Kneissl, R. Egger, G. Hasinger +2
Results from a cross-correlation analysis between the COBE DMR 4 year, and ROSAT PSPC All-Sky Survey data are presented. Statistical comparisons between microwave and X-ray maps ca…
New theoretical yields of intermediate mass stars
Bob van den Hoek, Martin Groenewegen
We present theoretical yields of H, He, C, C, N, and O for stars with initial masses between 0.8 and 8 M and initial metallicities Z = 0…
Illumination in binaries
J. -M. Hameury, H. Ritter
We give a simple, but accurate method that can be used to account for illumination in compact binary systems which have a low-mass companion, even if spherically symmetric illumina…
QSO Metal Absorption Systems at High Redshift and the Signature of Hierarchical Galaxy Formation
Michael Rauch, Martin G. Haehnelt, Matthias Steinmetz
In hierarchical cosmogonies at redshift three the matter content of a typical present-day galaxy is dispersed over several individual clumps embedded in sheet-like structures, ofte…
Two--body heating in numerical galaxy formation experiments
Matthias Steinmetz, Simon D. M. White
We show that discreteness effects related to classical two-body relaxation produce spurious heating of the gaseous component in numerical simulations of galaxy formation. A simple…
COBE Constraints on a Local group X-ray Halo
A. J. Banday, K. M. Gorski
We investigate the effect of a putative X-ray emitting halo surrounding the Local Group of galaxies, and specifically the possible temperature anisotropies induced in the COBE-DMR…