Counting papers with at most 25 authors, so collaboration author lists do not stand in for the people here.
- University of California, BerkeleyUS1.3k papers
- Goddard Space Flight CenterUS1.3k papers
- California Institute of TechnologyUS1.3k papers
- The Ohio State UniversityUS1.2k papers
- Centre National de la Recherche ScientifiqueFR1.1k papers
- Massachusetts Institute of TechnologyUS1.1k papers
- University of Maryland, College ParkUS1k papers
- Center for Astrophysics Harvard & SmithsonianUS975 papers
- Lawrence Berkeley National LaboratoryUS898 papers
- University of ChicagoUS889 papers
- University of WashingtonUS868 papers
- Yale UniversityUS848 papers
179 papers · 1 filter
Origin of Gamma Ray Bursters
P. Meszaros
The successful discovery of X-ray, optical and radio afterglows of GRB has made possible the identification of host galaxies at cosmological distances. The energy release inferred…
Photospheres, Comptonization and X-ray Lines in Gamma Ray Bursts
P. Meszaros
Steep X-ray spectral slopes, X-ray excesses and preferred spectral energy breaks in the 01-0.3 MeV range are discussed as the possible consequences of the photospheric component of…
The Fireball Shock Model of Gamma Ray Bursts
P. Meszaros
Gamma-ray bursts are thought to be the outcome of a cataclysmic event leading to a relativistically expanding fireball, in which particles are accelerated at shocks and produce non…
The ZEUS Forward Plug Calorimeter with Lead-Scintillator Plates and WLS Fiber Readout
A. Bamberger, S. Böttcher, I. Bohnet +31
A Forward Plug Calorimeter (FPC) for the ZEUS detector at HERA has been built as a shashlik lead-scintillator calorimeter with wave length shifter fiber readout. Before installatio…
An insider's guide to quantum causal histories
Fotini Markopoulou
A review is given of recent work aimed at constructing a quantum theory of cosmology in which all observables refer to information measurable by observers inside the universe. At t…
Histories quantisation of parameterised systems: I. Development of a general algorithm
Ntina Savvidou, Charis Anastopoulos
We develop a new algorithm for the quantisation of systems with first-class constraints. Our approach lies within the (History Projection Operator) continuous-time histories quanti…
Reverberation Measurements for 17 Quasars and the Size-Mass-Luminosity Relations in Active Galactic Nuclei
Shai Kaspi, Paul S. Smith, Hagai Netzer +3
(abridged) We have spectrophotometrically monitored a well-defined sample of 28 Palomar-Green quasars in order to obtain measurements of their BLRs and to investigate the relations…
Testing the Blazar Paradigm: ASCA Observations of FSRQs with Steep Soft X-ray Spectra
Rita M. Sambruna, Lester L. Chou, C. Megan Urry
We present the first observations at medium-hard X-rays with ASCA in 1998 August--November of four Flat Spectrum Radio Quasars (FSRQs), characterized by unusually steep soft X-ray…
Computer simulation studies of wetting on heterogeneous surfaces
S. Curtarolo, M. J. Bojan, G. Stan +2
The wetting of solid surfaces by fluids is a problem of great practical importance that has been extensively studied over the years. Most often, the experimental work has involved…
Large-x Parton Distributions
S. Kuhlmann, J. Huston, J. Morfin +5
Reliable knowledge of parton distributions at large x is crucial for many searches for new physics signals in the next generation of collider experiments. Although these are genera…
Understanding Blazar Jets Through Their Multifrequency Emission
Rita M. Sambruna
Being dominated by non-thermal (synchrotron and inverse Compton) emission from a relativistic jet, blazars offer important clues to the structure and radiative processes in extraga…
The Gauging of Five-dimensional, N=2 Maxwell-Einstein Supergravity Theories coupled to Tensor Multiplets
Murat Gunaydin, Marco Zagermann
We study the general gaugings of N=2 Maxwell-Einstein supergravity theories (MESGT) in five dimensions, extending and generalizing previous work. The global symmetries of these the…
Coordinated RXTE and multiwavelength observations of blazars
Rita M. Sambruna
Results from recent multiwavelength observations of blazars are reviewed, with particular emphasis on those involving the Rossi X-ray Timing Explorer (RXTE). I discuss blazars' spe…
Unitarity and the QCD-improved dipole picture
M. McDermott, L. Frankfurt, V. Guzey +1
As a consequence of QCD factorization theorems, a wide variety of inclusive and exclusive cross sections may be formulated in terms of a universal colour dipole cross section at sm…
Origin of the high piezoelectric response in PbZr(1-x)TixO3
R. Guo, L. E. Cross, S-E. Park +3
High resolution x-ray powder diffraction measurements on poled PbZr(1-x)TixO3 (PZT) ceramic samples close to the rhombohedral-tetragonal phase boundary (the so-called morphotropic…
Fractional-flux Little-Parks resistance oscillations in disordered superconducting AuIn cylinders
Yu. Zadorozhny, Y. Liu
Resistance of disordered superconducting AuIn cylindrical films was measured as a function of applied magnetic field. In the high-temperature part of the supercondu…
The Compact Central Object in Cas A: A Neutron Star with Hot Polar Caps or a Black Hole?
G. G. Pavlov, V. E. Zavlin, B. Aschenbach +2
The central pointlike X-ray source of the Cas A supernova remnant was discovered in the Chandra First Light Observation and found later in the archival ROSAT and Einstein images. T…
Asymptotically Anti-de Sitter Space-times: Conserved Quantities
Abhay Ashtekar, Saurya Das
Asymptotically anti-de Sitter space-times are considered in a general dimension . As one might expect, the boundary conditions at infinity ensure that the asymptotic symmet…
Dimensionally Reduced Gravity, Hermitian Symmetric Spaces and the Ashtekar Variables
Othmar Brodbeck, Marco Zagermann
Dimensional reductions of various higher dimensional (super)gravity theories lead to effectively two-dimensional field theories described by gravity coupled G/H nonlinear sigma-mod…
Topology of cyclic configuration spaces and periodic trajectories of multi-dimensional billiards
Michael Farber, Serge Tabachnikov
We give lowed bounds on the number of periodic trajectories in strictly convex smooth billiards in for . For plane billiards (when m=1) such bounds were obtained…
The ROSAT Deep Survey: III. Optical spectral properties of X-ray sources in the Lockman Hole
I. Lehmann, G. Hasinger, M. Schmidt +6
The ROSAT Deep Survey in the Lockman Hole contains a complete sample of 50 X-ray sources with fluxes in the 0.5-2.0 keV band larger than 5.5E-15 erg/cm2/s. Previous work has provid…
Removing Instrumental Artifacts: Suspension Violin Modes
Soma Mukherjee, Lee Samuel Finn
We describe the design of a Kalman filter that identifies suspension violin modes in an interferometric gravitational wave detectors data channel. We demonstrate the filter's effec…
Masses of composite fermions carrying two and four flux quanta: Differences and similarities
Xiaomin Zu, Kwon Park, Jainendra K. Jain
This study provides a theoretical rationalization for the intriguing experimental observation regarding the equality of the normalized masses of composite fermions carrying two and…
Quasi-periodic X-ray Flares from the Protostar YLW15
Yohko Tsuboi, Kensuke Imanishi, Katsuji Koyama +2
With ASCA, we have detected three X-ray flares from the Class I protostar YLW15. The flares occurred every ~20 hours and showed an exponential decay with time constant 30-60 ks. Th…