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
148 papers · 1 filter
Optical/Infrared Survey of Galaxy Clusters
Luiz da Costa, S. Arnouts, S. Bardelli +13
In this contribution the ongoing effort to build a statistical sample of clusters of galaxies over a wide range of redshifts to study the evolution of clusters and member galaxies…
Cluster Mass Profiles from Weak Lensing II
Lindsay King, Peter Schneider
In Schneider, King & Erben (2000) we developed likelihood techniques to compare the constraints on cluster mass profiles that can be obtained using the shear and magnification info…
Predicting the peculiar velocities of nearby PSC-z galaxies using the Least Action Principle
J. Sharpe, M. Rowan-Robinson, A. Canavezes +12
We use the Least Action Principle to predict the peculiar velocities of PSC-z galaxies inside \km. Linear theory is used to account for tidal effects to \km, and…
X-ray variability in a complete sample of Soft X-ray selected AGN
D. Grupe, H. -C. Thomas, K. Beuermann
We present ROSAT All-Sky Survey and ROSAT pointed observations (PSPC and HRI) of a complete sample of 113 bright soft X-ray AGN selected from the ROSAT Bright Source Catalog. We co…
Terapixel Surveys for Cosmic Shear
Y. Mellier, L. van Waerbeke, M. Radovich +14
The recent detections of cosmic shear signal announced by several groups have demonstrated the feasibility of this challenging program and convinced astro- nomers of its potential…
Populating a cluster of galaxies - I. Results at z=0
Volker Springel, Simon White, Giuseppe Tormen +1
We simulate the assembly of a massive rich cluster and the formation of its constituent galaxies in a flat, low-density universe. Our most accurate model follows the collapse, the…
Axisymmetric Modes of Rotating Relativistic Stars in the Cowling Approximation
Jose A. Font, Harald Dimmelmeier, Anshu Gupta +1
Axisymmetric pulsations of rotating neutron stars can be excited in several scenarios, such as core-collapse, crust and core-quakes and binary mergers and could become detectable e…
Characteristic numerical relativity applied to hydrodynamic studies of neutron stars
F. Siebel, J. A. Font, E. Mueller +1
We present tests and results of a new axisymmetric, fully general relativistic code capable of solving the coupled Einstein-matter system for a perfect fluid matter field. Our impl…
The brightness of SN 1991T and the uniformity of decline-rate and colour corrected absolute magnitudes of supernovae Ia
T. Richtler, J. B. Jensen, J. Tonry +2
We present a distance to NGC 4527, the host galaxy of the type Ia SN 1991T, measured by surface brightness fluctuations. This supernova has been labelled ``peculiar'' both on the g…
On the spin-up of neutron stars to millisecond pulsars in long-period binaries
H. Ritter, A. King
We study the accretion efficiency of neutron stars in long-period binaries, i.e. with periods longer than about 200d, which accrete from a giant companion. Using alpha-disc models…
Scattering in the inner accretion disk and the waveforms and polarization of millisecond flux oscillations in LMXBs
Sergei Y. Sazonov, Rashid A. Sunyaev
The scattering by the inner accretion disk of X-ray radiation generated near the surface of a spinning neutron star in a low-mass X-ray binary (LMXB) has observable effects on the…
Energy Release on the Surface of a Rapidly Rotating Neutron Star during Disk Accretion: A Thermodynamic Approach
N. Sibgatullin, R. Sunyaev
The total energy E of a star as a function of its angular momentum J and mass M in the Newtonian theory: E = E(J, M) [in general relativity, the gravitational mass M of a star as a…
Do relativistic corrections affect microlensing amplification?
Junya Ebina, Takeaki Osuga, Hideki Asada +1
Studies of gravitational microlensing are usually based on the lens equation, which is valid only to first order in the gravitational constant . However, the amplification facto…
The LMC eclipsing binary HV 2274 revisited
M. A. T. Groenewegen, M. Salaris
We reanalyse the UV/optical spectrum and optical broad-band data of the eclipsing binary HV 2274 in the LMC, and derive its distance following the method given by Guinan et al. (19…
Cosmic Shear Analysis in 50 Uncorrelated VLT Fields. Implications for Omega_0, sigma_8
R. Maoli, L. Van Waerbeke, Y. Mellier +5
We observed with the camera FORS1 on the VLT (UT1, ANTU) 50 randomly selected fields and analyzed the cosmic shear inside circular apertures with diameter ranging from 0.5 to 5.0 a…
Energy Release During Disk Accretion onto a Rapidly Rotating Neutron Star
N. R. Sibgatullin, R. A. Sunyaev
The energy release L_s on the surface of a neutron star (NS) with a weak magnetic field and the energy release L_d in the surrounding accretion disk depend on two independent param…
Exploding and Non-exploding Stars: Coupling Nuclear Reaction Networks to Multidimensional Hydrodynamics
K. Kifonidis, T. Plewa, E. Mueller
After decades of one-dimensional nucleosynthesis calculations, the growth of computational resources has meanwhile reached a level, which for the first time allows astrophysicists…
Reviving Fossil Radio Plasma in Clusters of Galaxies by Adiabatic Compression in Environmental Shock Waves
Torsten A. Ensslin, Gopal-Krishna
We give for a plasma with a history of several expansion and contraction phases an analytical model of the evolution of a contained relativistic electron population under synchrotr…
Analysis of CMB foregrounds using a database for Planck
G. Giardino, A. J. Banday, K. Bennett +5
Within the scope of the Planck IDIS (Integrated Data Information System) project we have started to develop the data model for time-ordered data and full-sky maps. The data model i…
Particle Acceleration and Diffusion in Fossil Radio Plasma
Torsten A. Ensslin
The strong activity of radio galaxies should have led to a nearly ubiquitous presence of fossil radio plasma in the denser regions of the inter-galactic medium as clusters, groups…
Giant cluster arcs as a constraint on the scattering cross-section of dark matter
Massimo Meneghetti, Naoki Yoshida, Matthias Bartelmann +4
We carry out ray tracing through five high resolution simulations of a galaxy cluster to study how its ability to produce giant gravitationally lensed arcs is influenced by the col…
Simulations of Deep Pencil-Beam Redshift Surveys
N. Yoshida, J. Colberg, S. D. M. White +9
We create mock pencil-beam redshift surveys from very large cosmological -body simulations of two Cold Dark Matter cosmogonies, an Einstein-de Sitter model (CDM) and a flat m…
New class of low frequency QPOs: signature of nuclear burning or accretion disk instabilities?
M. Revnivtsev, E. Churazov, M. Gilfanov +1
We report the discovery of a new class of low frequency quasi--periodic variations of the X-ray flux in the X-ray bursters 4U1608-52 and 4U1636-536. We also report an occasional de…
An ionizing UV background dominated by massive stars
Martin G. Haehnelt, Piero Madau, Rolf P. Kudritzki +1
We discuss implications of a stellar-dominated UV background at high redshifts. The composite spectrum of 29 LBGs evaluated by Steidel etal (2000) at <z>=3.4 can be well fit by a s…