Counting papers with at most 25 authors, so collaboration author lists do not stand in for the people here.
- Panjab UniversityIN1.9k papers
- University of Illinois ChicagoUS1.9k papers
- Purdue University West LafayetteUS1.9k papers
- Centre National de la Recherche ScientifiqueFR1.8k papers
- Florida State UniversityUS1.8k papers
- Fermi National Accelerator LaboratoryUS1.8k papers
- University of RochesterUS1.7k papers
- University of California, RiversideUS1.7k papers
- University of VirginiaUS1.7k papers
- Brown UniversityUS1.7k papers
- Texas A&M UniversityUS1.7k papers
- University of KansasUS1.7k papers
30 papers · 2 filters
The ACS Survey of Galactic Globular Clusters. I. Overview and Clusters Without Previous HST Photometry
Ata Sarajedini, L. Bedin, B. Chaboyer +10
We present the first results of a large ACS Survey of Galactic globular clusters. This Hubble Space Telescope (HST) Treasury project is designed to obtain photometry with S/N > ~10…
Simulating Poynting Flux Acceleration in the Laboratory with Colliding Laser Pulses
Edison Liang
We review recent PIC simulation results which show that double-sided irradiation of a thin over-dense plasma slab with ultra-intense laser pulses from both sides can lead to sustai…
Exploring Broadband GRB Behavior During gamma-ray Emission
S. A. Yost, H. F. Swan, E. S. Rykoff +44
The robotic ROTSE-III telescope network detected prompt optical emission contemporaneous with the gamma-ray emission of Swift events GRB051109A and GRB051111. Both datasets have co…
Topical Issues for Particle Acceleration Mechanisms in Astrophysical Shocks
Matthew G. Baring
Particle acceleration at plasma shocks appears to be ubiquitous in the universe, spanning systems in the heliosphere, supernova remnants, and relativistic jets in distant active ga…
Characterization of Gravitational Microlensing Planetary Host Stars
David P. Bennett, Jay Anderson, B. Scott Gaudi
The gravitational microlensing light curves that reveal the presence of extrasolar planets generally yield the planet-star mass ratio and separation in units of the Einstein ring r…
Search for polarization from the prompt gamma-ray emission of GRB 041219a with SPI on INTEGRAL
E. Kalemci, S. E. Boggs, C. Kouveliotou +2
Measuring the polarization of the prompt gamma-ray emission from GRBs can significantly improve our understanding of both the GRB emission mechanisms, as well as the underlying eng…
Deviations from He I Case B Recombination Theory and Extinction Corrections in the Orion Nebula
K. P. M. Blagrave, P. G. Martin, R. H. Rubin +4
We are engaged in a comprehensive program to find reliable elemental abundances in and to probe the physical structure of the Orion Nebula, the brightest and best-resolved H II reg…
The absolute motion of the peculiar cluster NGC6791
L. R. Bedin, G. Piotto, G. Carraro +2
We present improved values of the three components of the absolute space velocity of the open cluster NGC6791. One HST ACS/WFC field with two-epoch observations provides astrometri…
Resonant Compton Upscattering in Anomalous X-ray Pulsars
Matthew G. Baring, Alice K. Harding
A significant new development in the study of Anomalous X-ray Pulsars (AXPs) has been the recent discovery by INTEGRAL and RXTE of flat, hard X-ray components in three AXPs. These…
3D Position Sensitive XeTPC for Dark Matter Search
J. Angle, E. Aprile, F. Arneodo +30
The technique to realize 3D position sensitivity in a two-phase xenon time projection chamber (XeTPC) for dark matter search is described. Results from a prototype detector (XENON3…
How Hot is the Wind from TW Hydrae?
C. M. Johns-Krull, G. J. Herczeg
It has recently been suggested that the winds from Classical T Tauri stars in general, and the wind from TW Hya in particular, reaches temperatures of at least 300,000 K while main…
Electrostatic Potentials in Supernova Remnant Shocks
Matthew G. Baring, Errol J. Summerlin
Recent advances in the understanding of the properties of supernova remnant shocks have been precipitated by the Chandra and XMM X-ray Observatories, and the HESS Atmospheric Ceren…
Spectropolarimetry of the Classical T Tauri Star TW Hydrae
H. Yang, C. M. Johns-Krull, J. A. Valenti
We present high resolution (R ~ 60,000) circular spectropolarimetry of the classical T Tauri star TW Hydrae. We analyze 12 photospheric absorption lines and measure the net longitu…
HST Proper Motions and Stellar Dynamics in the Core of the Globular Cluster 47 Tucanae
Dean E. McLaughlin, Jay Anderson, Georges Meylan +4
We have used HST imaging of the central regions (R<100 arcsec, about 5 core radii) of the globular cluster 47 Tucanae to derive proper motions and U- and V-band magnitudes for 14,3…
Interpreting Spectral Energy Distributions from Young Stellar Objects. I. A grid of 200,000 YSO model SEDs
Thomas P. Robitaille, Barbara A. Whitney, Remy Indebetouw +2
We present a grid of radiation transfer models of axisymmetric young stellar objects (YSOs), covering a wide range of stellar masses (from 0.1Msun to 50Msun) and evolutionary stage…
Accurate M Dwarf Metallicities from Spectral Synthesis: A Critical Test of Model Atmospheres
Jacob L. Bean, Christopher Sneden, Peter H. Hauschildt +2
We describe a method for accurately determining M dwarf metallicities with spectral synthesis based on abundance analyses of visual binary stars. We obtained high resolution, high…
Lensing signals in the Hubble Ultra-Deep Field using all 2nd order shape deformations
John Irwin, Marina Shmakova, Jay Anderson
The long exposure times of the HST Ultra-Deep Field plus the use of an empirically derived position-dependent PSF, have enabled us to measure a cardioid/displacement distortion map…
Temporal Evolution of Pair Attenuation Signatures in Gamma-Ray Burst Spectra
Matthew G. Baring
The spectra obtained above 100 MeV by the EGRET experiment aboard the Compton Gamma-Ray Observatory for a handful of gamma-ray bursts has given no indication of any spectral attenu…
Identification of the OGLE-2003-BLG-235/MOA-2003-BLG-53 Planetary Host Star
David P. Bennett, Jay Anderson, Ian A. Bond +2
We present the results of HST observations of the host star for the first definitive extrasolar planet detected by microlensing. The light curve model for this event predicts that…
A Transiting Planet of a Sun-like Star
P. R. McCullough, J. E. Stys, Jeff A. Valenti +11
A planet transits an 11th magnitude, G1V star in the constellation Corona Borealis. We designate the planet XO-1b, and the star, XO-1, also known as GSC 02041-01657. XO-1 lacks a t…
Absolute motions of globular clusters. II. [HST astrometry and VLT radial velocities in NGC6397]
A. Milone, S. Villanova, L. R. Bedin +6
In this paper we present a new, accurate determination of the three components of the absolute space velocity of the Galactic globular cluster NGC6397 (l 338d, b -12d). We used thr…
Ground-Based CCD Astrometry with Wide Field Imagers. I. [Observations just a few years apart allow decontamination of field objects from members in two Globular clusters.]
Jay Anderson, Luigi R. Bedin, Giampaolo Piotto +3
This paper is the first of a series of papers in which we will apply the methods we have developed for high-precision astrometry (and photometry) with the Hubble Space Telescope to…
Millimetric Properties of Gamma Ray Burst Host Galaxies
R. S. Priddey, N. R. Tanvir, A. J. Levan +4
We present millimetre (mm) and submillimetre (submm) photometry of a sample of host galaxies of Gamma Ray Bursts (GRBs), obtained using the MAMBO2 and SCUBA bolometer arrays respec…
Compton Spectrum from Poynting Flux Accelerated e+e- Plasma
Shinya Sugiyama, Edison Liang, Koichi Noguchi +1
We report the Compton scattering emission from the Poynting flux acceleration of electron- positron plasma simulated by the 2-1/2 dimensional particle-in-cell(PIC) code. We show th…