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
158 papers · 1 filter
Optical and Infrared Photometry of the Unusual Type Ia Supernova 2000cx
P. Candia, K. Krisciunas, Nicholas B. Suntzeff +16
We present optical and infrared photometry of the unusual Type Ia supernova 2000cx. With the data of Li et al. (2001) and Jha (2002), this comprises the largest dataset ever assemb…
Cosmic Ray Production of Li by Structure Formation Shocks in the Early Galaxy
Susumu Inoue, Takeru Ken Suzuki
We discuss the production of the element Li in the early Galaxy by cosmic rays accelerated at structure formation shocks, driven by the hierarchical merging of sub-Galactic hal…
Explosion Mechanisms of Massive Stars
H. -Th. Janka, R. Buras, K. Kifonidis +2
One of the central problems in supernova theory is the question how massive stars explode. Understanding the physical processes that drive the explosion is crucial for linking the…
The Mechanism of Core-Collapse Supernovae and the Ejection of Heavy Elements
H. -Th. Janka, R. Buras, M. Rampp
We present here the first results of two-dimensional hydrodynamical simulations of the neutrino-heating phase in the collapsed core of a 15 solar mass star, where the neutrino tran…
Core Collapse and Then? The Route to Massive Star Explosions
H. -Th. Janka, R. Buras, K. Kifonidis +2
The rapidly growing base of observational data for supernova explosions of massive stars demands theoretical explanations. Central of these is a self-consistent model for the physi…
Ultradeep Near-Infrared ISAAC Observations of the HDF-S: Observations, Reduction, Multicolor Catalog, and Photometric Redshifts
I. Labbe, M. Franx, G. Rudnick +10
We present deep near-infrared (NIR) Js, H, and Ks-band ISAAC imaging of the WFPC2 field of the HDF-S. The 2.5'x 2.5' high Galactic latitude field was observed with the VLT under th…
Observing scattered X-ray radiation from gamma-ray bursts: a way to measure their collimation angles
S. Sazonov, R. Sunyaev
There are observational facts and theoretical arguments for an origin of gamma-ray bursts in molecular clouds in distant galaxies. If this is true, one could detect a significant f…
On the escape of cosmic rays from radio galaxy cocoons
Torsten A. Ensslin
(Abridged) A model for the escape of CR particles from radio galaxy cocoons is presented here. It is assumed that the radio cocoon is poorly magnetically connected to the environme…
The Rotational Velocity of Helium-rich Pre-White Dwarfs
T. Rauch, S. Koeper, S. Dreizler +3
Previous investigations on hydrogen-rich white dwarfs generally yield only very small rotational velocities (v_rot sin i). We have analyzed line profiles in high-resolution optical…
The Enigma of AA Dor
T. Rauch, K. Werner
AA Dor (LB 3459) is an eclipsing, close binary (P = 0.26d) consisting of a sdOB primary star and an unseen secondary with an extraordinary small mass. The secondary is possibly a f…
Understanding the spectra of isolated Herbig stars in the frame of a passive disk model
C. Dominik, C. P. Dullemond, L. B. F. M. Waters +1
We discuss spectral energy distributions of a sample of Herbig Ae/Be stars in the context of a passive irradiated disk model. The data have been presented earlier by Meeus et al (2…
Does circular polarisation reveal the rotation of quasar engines?
Torsten A. Ensslin
Many radio sources like quasars, blazars, radio galaxies, and micro-quasars exhibit circular polarisation (CP) with surprising temporal persistent handedness. As a possible explana…
Probing the Friedmann equation during recombination with future CMB experiments
Oliver Zahn, Matias Zaldarriaga
We show that by combining measurements of the temperature and polarization anisotropies of the Cosmic Microwave Background (CMB), future experiments will tightly constrain the expa…
Selection of Metal-poor Giant Stars Using the Sloan Digital Sky Survey Photometric System
A. Helmi, Z. Ivezic, F. Prada +10
We present a method for photometric selection of metal-poor halo giants from the imaging data of the Sloan Digital Sky Survey (SDSS). These stars are offset from the stellar locus…
First full evolutionary computation of the He-flash induced mixing in Population II stars
S. Cassisi, H. Schlattl, M. Salaris +1
The core helium-flash in low-mass stars with extreme mass loss occurs after the tip of the RGB, when the H-rich envelope is very thin. The low efficiency of the H-shell source enab…
COBE-DMR constraints on the nonlinear coupling parameter: a wavelet based method
L. Cayon, E. Martinez-Gonzalez, F. Argueso +2
Nonlinearity introduced in slow-roll inflation will produce weakly non-Gaussian CMB temperature fluctuations. We have simulated non-Gaussian large scale CMB maps (including COBE-DM…
Algebraic Properties of the Real Quintic Equation for a Binary Gravitational Lens
Hideki Asada, Taketoshi Kasai, Masumi Kasai
It has been recently shown that the lens equation for a binary gravitational lens, which is apparently a coupled system, can be reduced to a real fifth-order (quintic) algebraic eq…
Images for an Isothermal Ellipsoidal Gravitational Lens from a Single Real Algebraic Equation
Hideki Asada, Takashi Hamana, Masumi Kasai
We present explicit expressions for the lens equation for a cored isothermal ellipsoidal gravitational lens as a single real sixth-order algebraic equation in two approaches; 2-dim…
Cosmic Rays in Clusters of Galaxies
Peter L. Biermann, Torsten A. Enßlin, Hyesung Kang +2
We argue that clusters of galaxies have an intergalactic medium, which is permeated by strong magnetic fields and also has a contribution of pressure from cosmic rays. These two co…
The nature of the ultraluminous X-ray sources inside galaxies and their relation to local QSOs
G. Burbidge, E. M. Burbidge, H. Arp
It is suggested that many of the ultraluminous compact x-ray sources now being found in the main bodies of galaxies, particularly those that are active, like M82, NGC 3628 and othe…
Modification of cluster radio halo appearance by the thermal Sunyaev-Zeldovich effect
Torsten A. Ensslin
We discuss the consequences of the spectral and morphological modification of galaxy cluster radio halos due to the Sunyaev-Zeldovich (SZ) effect for the interpretation of existing…
Discriminating between unresolved point sources and "negative" SZ clusters in CMB maps
J. A. Rubino-Martin, R. A. Sunyaev
Clusters of galaxies produce negative features at wavelengths mm in CMB maps, by means of the thermal SZ effect, while point radio sources produce positive peaks. This fa…
On the small-scale stability of thermonuclear flames in Type Ia supernovae
F. K. Roepke, J. C. Niemeyer, W. Hillebrandt
We present a numerical model which allows us to investigate thermonuclear flames in Type Ia supernova explosions. The model is based on a finite-volume explicit hydrodynamics solve…
Origin of the torsional oscillation pattern of solar rotation
H. C. Spruit
A model is presented that explains the `torsional oscillation' pattern of deviations in the solar rotation rate as a geostrophic flow. The flow is driven by temperature variations…