Counting papers with at most 25 authors, so collaboration author lists do not stand in for the people here.
- Harvard UniversityUS3.4k papers
- California Institute of TechnologyUS2.8k papers
- Centre National de la Recherche ScientifiqueFR2.4k papers
- University of California, BerkeleyUS2k papers
- Massachusetts Institute of TechnologyUS2k papers
- University of ArizonaUS1.9k papers
- Goddard Space Flight CenterUS1.6k papers
- Space Telescope Science InstituteUS1.6k papers
- Princeton UniversityUS1.5k papers
- Max Planck Institute for AstronomyDE1.4k papers
- Max Planck Institute for Extraterrestrial PhysicsDE1.4k papers
- University of MichiganUS1.3k papers
353 papers · 1 filter
Deconstructing HD 28867
Frederick M. Walter, Tracy L. Beck, Jon A. Morse +1
The 3" pair of B9 stars, HD 28867, is one of the brightest X-ray sources in the Taurus-Auriga star forming region. In this multi-wavelength study, we attempt to deduce the source o…
A Self-Consistent Study of Triaxial Black-Hole Nuclei
M. Y. Poon, D. Merritt
We construct models of triaxial galactic nuclei containing central black holes using the method of orbital superposition, then verify their stability by advancing N-body realizatio…
Optical Spectropolarimetry of the GRB 020813 Afterglow
A. J. Barth, R. Sari, M. H. Cohen +6
The optical afterglow of gamma-ray burst 020813 was observed for 3 hours with the LRIS spectropolarimeter at the Keck-I telescope, beginning 4.7 hours after the burst was detected…
Ferroelectricity in (K@C)
Dennis P. Clougherty
A theoretical analysis of the ground state of long-chain (K@C) is presented. Within mean field theory, a ferroelectric ground state is found to be stable because of the…
The Evolution of a Mass-Selected Sample of Early-Type Field Galaxies
D. Rusin, C. S. Kochanek, E. E. Falco +7
We investigate the evolution of mass-selected early-type field galaxies using a sample of 28 gravitational lenses spanning the redshift range 0 < z < 1. Based on the redshift-depen…
Evolution of Magnetic Fields around a Kerr Black Hole
Li-Xin Li
The evolution of magnetic fields frozen to a perfectly conducting plasma fluid around a Kerr black hole is investigated. We focus on the plunging region between the black hole hori…
The Time-Variable Ultra-Luminous X-ray Sources of "The Antennae"
G. Fabbiano, A. Zezas, A. R. King +3
We report the first results of the Chandra temporal monitoring of the ultra-luminous X-ray sources (ULXs) in the Antennae galaxies (NGC 4038/39). Observations at four different epo…
Investigation of the possible third image and mass models of the gravitational lens PMN J1632-0033
Joshua N. Winn, David Rusin, Christopher S. Kochanek
We present multi-frequency VLBA observations of PMN J1632-0033, one of the few gravitationally lensed quasars suspected of having a central ``odd'' image. The central component has…
The Formation of Close Binary Systems by Dynamical Interactions and Orbital Decay
Matthew R. Bate, Ian A. Bonnell, Volker Bromm
We present results from the first hydrodynamical star formation calculation to demonstrate that close binary stellar systems (separations $\lsim 10$ AU) need not be formed directly…
The Formation of a Star Cluster: Predicting the Properties of Stars and Brown Dwarfs
Matthew R. Bate, Ian A. Bonnell, Volker Bromm
We present results from the largest numerical simulation of star formation to resolve the fragmentation process down to the opacity limit. The simulation follows the collapse and f…
Galaxy Clustering and Galaxy Bias in a Lambda-CDM Universe
David H. Weinberg, Romeel Dav'e, Neal Katz +1
We investigate galaxy clustering and galaxy-mass correlations in the LCDM cosmological model using a large volume SPH simulation. For the most part, the predicted biases between ga…
A comparative study of the X-ray afterglow properties of optically bright and dark GRBs
M. De Pasquale, L. Piro, R. Perna +9
We have examined the complete set of X-ray afterglow observations of dark and optically bright GRBs performed by BeppoSAX until February 2001. X-ray afterglows are detected in 90%…
Motions of Isolated G-Band Bright Points in the Solar Photosphere
P. Nisenson, A. A. van Ballegooijen, A. G. de Wijn +1
Magnetic elements on the quiet sun are buffeted by convective flows that cause lateral motions on timescales of minutes. The magnetic elements can be observed as bright points (BPs…
Dust properties of the dark cloud IC5146 - Submillimeter and NIR imaging
C. Kramer, J. Richer, B. Mookerjea +2
We present the results of a submillimeter dust continuum study of a molecular ridge in IC5146 carried out at 850micron and 450micron with SCUBA on the James Clerk Maxwell Telescope…
CDM Substructure in Gravitational Lenses: Tests and Results
C. S. Kochanek, N. Dalal
We use a simple statistical test to show that the anomalous flux ratios observed in gravitational lenses are created by gravitational perturbations from substructure rather than pr…
II. Accurate Positions and Proper Motions of Stellar SiO Masers near the Galactic Center
M. J. Reid, K. M. Menten, R. Genzel +3
Menten, Reid, Eckart and Genzel (1997) accurately determined the position of Sgr A* on an infrared image, by aligning the infrared image with positions measured for SiO masers, ass…
Detection of TeV Gamma Rays from the BL Lac Object 1ES1959+650 with the Whipple 10m Telescope
J. Holder, VERITAS collaboration
We present the first strong detection of very high energy gamma-rays from the close (z=0.048) X-ray selected BL Lacertae object 1ES1959+650. Observations were made with the Whipple…
The redshift determination of GRB 990506 and GRB 000418 with the Echellete Spectrograph Imager on Keck
J. S. Bloom, E. Berger, S. R. Kulkarni +2
Using the Echellete Spectrograph Imager (ESI) on the Keck II 10-m telescope we have measured the redshifts of the host galaxies of gamma-ray bursts GRB 990506 and GRB 000418, z=1.3…
Iron-Rich Ejecta in the Supernova Remnant DEM L71
John P. Hughes, Parviz Ghavamian, Cara E. Rakowski +1
Chandra X-ray observations of DEM L71, a supernova remnant (SNR) in the Large Magellanic Cloud (LMC), reveal a clear double shock morphology consisting of an outer blast wave shock…
Anomalous X-ray pulsars and soft gamma-ray repeaters - the connection with supernova remnants
Bryan Gaensler
Many of the properties of anomalous X-ray pulsars (AXPs) and soft gamma-ray repeaters (SGRs) are still a matter of much debate, as is the connection (if any) between these two grou…
A Comprehensive Study of the L1551 IRS 5 Binary System
M. Osorio, P. D'Alessio, J. Muzerolle +2
We model the Class I source L1551 IRS 5, adopting a flattened infalling envelope surrounding a binary disk system and a circumbinary disk. With our composite model, we calculate se…
Background Measurements from Balloon-Borne CZT Detectors
Johnathan A Jenkins, Tomohiko Narita, Jonathan E. Grindlay +4
We report detector characteristics and background measurements from two prototype imaging CZT detectors flown on a scientific balloon payload in May 2001. The detectors are both pl…
The Discovery of H2O Maser Emission in Seven AGN and at High Velocities in the Circinus Galaxy
L. J. Greenhill, P. T. Kondratko, J. E. J. Lovell +4
We report the discovery of H2O maser emission at 1.35 cm wavelength in seven active galactic nuclei (at distances up to <80 Mpc) during a survey conducted at the 70-m diameter ante…
Disk Accretion Flow Driven by Large-Scale Magnetic Fields: Solutions with Constant Specific Energy
Li-Xin Li
(Abridged) We study the dynamical evolution of a stationary, axisymmetric, and perfectly conducting cold accretion disk containing a large-scale magnetic field around a Kerr black…