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
19 papers · 2 filters
HST/ACS Imaging of Omega Centauri: Optical Counterpart for the Quiescent Low-Mass X-Ray Binary
D. Haggard, A. M. Cool, J. Anderson +5
We report the discovery of an optical counterpart to a quiescent neutron star in the globular cluster Omega Centauri (NGC 5139). The star was found as part of our wide-field imagin…
Multiwavelength Observations of Strong Flares From the TeV-Blazar 1ES 1959+650
H. Krawczynski, S. B. Hughes, D. Horan +16
Following the detection of strong TeV gamma-ray flares from the BL Lac object 1ES 1959+650 with the Whipple 10 m Cherenkov telescope on May 16 and 17, 2002, we performed intensive…
Tomographic 3D-Modeling of the Solar Corona with FASR
Markus J. Aschwanden, David Alexander, Marc DeRosa
The "Frequency-Agile Solar Radiotelescope" (FASR) litteraly opens up a new dimension in addition to the 3D Euclidian geometry: the frequency dimension. The 3D geometry is degenerat…
Mapping the Circumstellar Environment of T Tauri with Fluorescent H_2 Emission
Frederick M. Walter, Gregory Herczeg, Alexander Brown +6
We have obtained three long-slit, far UV spectra of the pre-main sequence system T Tauri. These HST/STIS spectra show a strong and variable on-source spectrum composed of both fluo…
Vortices in the Co-orbital Region of an Embedded Protoplanet
Josef Koller, Hui Li, Douglas N. C. Lin
We present global 2-D inviscid disk simulations with an embedded planet, emphasizing the non-linear dynamics in its co-orbital region. We find that the potential vorticity of the f…
The State of pulsar theory
F. Curtis Michel
I summarize the status of pulsar theory, now 35 years after their discovery. Although progress has been made in understanding the relevant processes involved, there are several wid…
Repeated Bifurcation of Relativistic Magnetic Pulse and Cosmic Gamma-Ray Bursts
Edison Liang, Kazumi Nishimura
The diverse and complex light curves of gamma-ray bursts (GRBs) remain an outstanding astrophysical mystery. Here we report the results of 2-1/2-dimensional particle-in-cell (PIC)…
High-Energy Emission from Pulsars: The Polar Cap Scenario
Matthew G. Baring
The study of pulsars in the three and a half decades since their discovery has highlighted a handful of issues critical to their understanding. To date there is no consensus on the…
Parameter study of the diamagnetic relativistic pulse accelerator (DRPA) in slab geometry I: Dependence on initial frequency ratio and slab width
Kazumi Nishimura, Edison Liang
Two-and-a-half-dimensional particle-in-cell plasma simulations are used to study the particle energization in expanding magnetized electron-positron plasmas with slab geometry. Whe…
Charge separation effects in magnetized electron-ion plasma expansion into a vacuum
Kazumi Nishimura, Edison Liang, S. Peter Gary
Charge separation effects in the expansion of magnetized relativistic electron-ion plasmas into a vacuum are examined using 2-1/2-dimensional particle-in-cell plasma simulations. T…
Magnetohydrodynamic Jump Conditions for Oblique Relativistic Shocks with Gyrotropic Pressure
Glen P. Double, Matthew G. Baring, Frank C. Jones +1
Shock jump conditions are obtained for steady-state, plane shocks with oblique magnetic fields and arbitrary flow speeds. For ultrarelativistic and nonrelativistic shocks, the jump…
The Effect of Multiple Scattering on the Polarization from Binary Star Envelopes. I. Self- and Externally Illuminated Disks
Jennifer L. Hoffman, Barbara A. Whitney, Kenneth H. Nordsieck
We present the results of a Monte Carlo radiative transfer code that calculates the polarization produced by multiple Thomson scattering and variable absorptive opacity in a circum…
Natural Coronagraphic Observations of the Eclipsing T Tauri System KH 15D: Evidence for Accretion and Bipolar Outflow in a WTTS
Catrina M. Hamilton, William Herbst, Reinhard Mundt +2
We present high resolution (R 44,000) UVES spectra of the eclipsing pre-main sequence star KH 15D covering the wavelength range 4780 to 6810 Å obtained at three phases: out…
Transition Region Emission From Very Low Mass Stars
Suzanne L. Hawley, Christopher M. Johns-Krull
We present results from our cycle 10 HST program to search for transition region emission in very low-mass, main-sequence stars in the spectral range M7-M9. Our program is aimed at…
HST Astrometry of M4 and the Galactic Constant V_0/R_0
L. R. Bedin, G. Piotto, I. R. King +1
From multi-epoch WFPC2/HST observations we present astrometric measurements of stars in the Galactic globular cluster M4 (NGC 6121) and in the foreground/background. The presence o…
Accurate Internal Proper Motions of Globular Clusters
L. R. Bedin, G. Piotto, J. Anderson +1
We have undertaken a long term program to measure high precision proper motions of nearby Galactic globular cluster (GC) stars using multi-epoch observations with the WFPC2 and the…
Search for Relativistic Curvature Effects in Gamma-Ray Burst Pulses
Dan Kocevski, Felix Ryde, Edison Liang
We analyze the time profiles of individual gamma-ray burst (GRB) pulses, that are longer than 2 s, by modelling them with analytical functions that are based empirical descriptions…
Particle Energization in an Expanding Magnetized Relativistic Plasma
Edison Liang, Kazumi Nishimura, Hui Li +1
Using a 2-1/2-dimensional particle-in-cell (PIC) code to simulate the relativistic expansion of a magnetized collisionless plasma into a vacuum, we report a new mechanism in which…
Spectroscopic and Spectropolarimetric Observations of V838 Mon
John P. Wisniewski, Nancy D. Morrison, Karen S. Bjorkman +5
The spectroscopic and spectropolarimetric variability of the peculiar variable V838 Monocerotis during the brighter phases of its multiple outbursts in 2002 is presented. Significa…