Counting papers with at most 25 authors, so collaboration author lists do not stand in for the people here.
- Centre National de la Recherche ScientifiqueFR5.8k papers
- Sorbonne UniversitéFR2.7k papers
- Université Pierre-et-Marie-CurieFR2.2k papers
- Commissariat à l'Énergie Atomique et aux Énergies AlternativesFR1.4k papers
- California Institute of TechnologyUS1.2k papers
- University of CambridgeGB1.1k papers
- Laboratoire d’Astrophysique de MarseilleFR1k papers
- University of OxfordGB1k papers
- University College LondonGB1k papers
- CEA Paris-SaclayFR992 papers
- University of GenevaCH963 papers
- Observatoire de ParisFR942 papers
165 papers · 1 filter
Interstellar Deuterium, Nitrogen, and Oxygen Abundances Toward GD 246, WD 2331475, HZ 21, and Lan 23: Results from the FUSE Mission
Cristina M. Oliveira, Guillaume Hebrard, J. Christopher Howk +3
The interstellar abundances of D I, N I, and O I in the local ISM are studied us ing high-resolution spectra of four hot white dwarfs. The spectra of GD 246, WD 2331475, HZ 21,…
Deuterium Toward Two Milky Way Disk Stars: Probing Extended Sight Lines with the Far Ultraviolet Spectroscopic Explorer
Charles G. Hoopes, Kenneth R. Sembach, Guillaume Hebrard +2
We have carried out an investigation of the abundance of deuterium along two extended sight lines through the interstellar medium (ISM) of the Galactic disk. The data include Far U…
Improved Measurement of the Angular Power Spectrum of Temperature Anisotropy in the CMB from Two New Analyses of BOOMERANG Observations
J. E. Ruhl, P. A. R. Ade, J. J. Bock +27
We report the most complete analysis to date of observations of the Cosmic Microwave Background (CMB) obtained during the 1998 flight of BOOMERANG. We use two quite different metho…
Constraints on dark energy and quintessence with a comoving standard ruler applied to 2dF quasars
Gary A. Mamon, Boud F. Roukema
Structures on very large scales (> 100 Mpc) have negligible peculiar motions, and are thus roughly fixed in comoving space. We looked for significant peaks at very large separation…
Fluctuating brane in a dilatonic bulk
Philippe Brax, David Langlois, Maria Rodriguez-Martinez
We consider a cosmological brane moving in a static five-dimensional bulk spacetime endowed with a scalar field whose potential is exponential. After studying various cosmological…
The Lyalpha Forest Around High Redshift Galaxies
M. Bruscoli, A. Ferrara, S. Marri +4
Motivated by the relative lack of neutral hydrogen around Lyman Break Galaxies deduced from recent observations, we investigate the properties of the Lyalpha forest around high red…
Are X-ray flashes a peculiar class of (soft) gamma-ray bursts ?
Frederic Daigne, Celine Barraud, Robert Mochkovitch
Heise et al. (2001) have reported the identification of a new class of sources by Beppo-SAX, the so-called X-ray flashes (XRFs), which have many common properties with gamma-ray bu…
Regular cosmological solutions in low energy effective action from string theories
J. C. Fabris, R. G. Furtado, Patrick Peter +1
The possibility of obtaining singularity free cosmological solutions in four dimensional effective actions motivated by string theory is investigated. In these effective actions, i…
Trans-Planckian Dark Energy?
Martin Lemoine, Jerome Martin, Jean-Philippe Uzan
It has recently been proposed by Mersini et al. 01, Bastero-Gil and Mersini 02 that the dark energy could be attributed to the cosmological properties of a scalar field with a non-…
Simulating Cosmic Microwave Background maps in multi-connected spaces
Alain Riazuelo, Jean-Philippe Uzan, Roland Lehoucq +1
This article describes the computation of cosmic microwave background anisotropies in a universe with multi-connected spatial sections and focuses on the implementation of the topo…
A radial mass profile analysis of the lensing cluster MS2137-23
R. Gavazzi, B. Fort, Y. Mellier +2
We reanalyze the strong lens modeling of the cluster of galaxies MS2137-23 using a new data set obtained with the ESO VLT. We found the photometric redshifts of the two main arc sy…
Spatial Origin of Galactic Cosmic Rays in Diffusion Models: II- Exotic Primary Cosmic Rays
David Maurin, Richard Taillet
In a companion paper, we investigated the question of the spatial origin of the cosmic rays detected in the Solar neighborhood, in the case of standard sources located in the Galac…
Spatial Origin of Galactic Cosmic Rays in Diffusion Models: I- Standard sources in the Galactic disk
Richard Taillet, David Maurin
The propagation of Galactic Cosmic Ray nuclei having energies between 100 MeV/nuc and several PeV/nuc is strongly believed to be of diffusive nature. The particles emitted by a sou…
A 1.2mm MAMBO/IRAM-30m Study of Dust Emission from optically luminous z~2 Quasars
A. Omont, A. Beelen, F. Bertoldi +5
We report 250GHz (1.2mm) observations of redshift 1.8 < z < 2.8 optically luminous (M_B < -27.0), radio quiet quasars using the Max-Planck Millimeter Bolometer (MAMBO) array at the…
The SCUBA Bright Quasar Survey II: unveiling the quasar epoch at submillimetre wavelengths
Robert S. Priddey, Kate G. Isaak, Richard G. McMahon +1
We present results of the first systematic search for submillimetre continuum emission from z=2, radio-quiet, optically-luminous quasars, using the SCUBA/JCMT. We have observed a h…
On the stability of thick accretion disks around black holes
Jose A. Font, Frederic Daigne
Discerning the likelihood of the so-called runaway instability of thick accretion disks orbiting black holes is an important issue for most models of cosmic gamma-ray bursts. To th…
Topological Defects in Contracting Universes
P. P. Avelino, C. J. A. P. Martins, C. Santos +1
We study the behaviour and consequences of cosmic string networks in contracting universes. They approximately behave during the collapse phase as a radiation fluids. Scaling solut…
The warm-hot intergalactic medium at z~2.2: Metal enrichment and ionization source
Jacqueline Bergeron, Bastien Aracil, Patrick Petitjean +1
Results are presented for our search for warm-hot gas towards the quasar Q 0329-385. We identify ten OVI systems of which two are within 5000 km/s of z_em and a third one should be…
Indirect Detection of Kaluza-Klein Dark Matter
Gianfranco Bertone, Geraldine Servant, Guenter Sigl
We investigate prospects for indirect detection of Kaluza--Klein dark matter, focusing on the annihilation radiation of the first Kaluza--Klein excitation of the Hypercharge gauge…
Detecting gravitational waves from precessing binaries of spinning compact objects: Adiabatic limit
Alessandra Buonanno, Yanbei Chen, Michele Vallisneri
Black-hole (BH) binaries with single-BH masses m=5--20 Msun, moving on quasicircular orbits, are among the most promising sources for first-generation ground-based gravitational-wa…
Large-scale curvature and entropy perturbations for multiple interacting fluids
Karim A. Malik, David Wands, Carlo Ungarelli
We present a gauge-invariant formalism to study the evolution of curvature perturbations in a Friedmann-Robertson-Walker universe filled by multiple interacting fluids. We resolve…
Low-Redshift Damped Lyman Alpha Galaxies Toward the Quasars B2 0827+243, PKS 0952+179, PKS 1127-145, and PKS 1629+120
Sandhya M. Rao, Daniel B. Nestor, David A. Turnshek +3
We present optical and near-infrared ground-based imaging results on four low-redshift damped Ly-alpha (DLA) galaxies. The corresponding DLA systems were discovered in our HST spec…
Quintessence and the accelerating universe
Philippe Brax, Jerome Martin
Observations seem to indicate that our universe is presently accelerating due to the presence of dark energy. Quintessence represents a possible way to model the dark energy. In th…
Spatially Resolved Millimeter Interferometry of SMMJ02399-0136: a Very Massive Galaxy at z=2.8
Reinhard Genzel, Andrew J. Baker, Linda J. Tacconi +4
We report high-resolution millimeter mapping with the IRAM Plateau de Bure interferometer of rest-frame 335 micron continuum and CO(3-2) line emission from the z=2.8 submillimeter…