Results 21 to 30 of about 220,311 (341)
Point Sources of GeV Gamma Rays [PDF]
The Astrophysical Journal, 1997 A catalog of c-ray sources based on photons with energies greater than 1 GeV has been developed from observations taken by the EGRET instrument of the Compton Gamma Ray Observatory. The data are taken from the 4.5 yr of observation available in the public data archives. We emphasize sources that are detected using the entire database, without regard
R. C. Lamb, D. J. Macomb, D. J. Macomb
openaire +4 more sources
A Variational Beam Model for Failure of Cellular and Truss‐Based Architected Materials
Advanced Engineering Materials, EarlyView., 2023 Herein, a versatile and efficient beam modeling framework is developed to predict the nonlinear response and failure of cellular, truss‐based, and woven architected materials. It enables the exploration of their design space and the optimization of their mechanical behavior in the nonlinear regime. A variational formulation of a beam model is presented
Konstantinos Karapiperis +3 more
wiley +1 more source
Quantum sources and a quantum coding theorem [PDF]
J.Math.Phys. 39 (1998) 88-101, 1995 We define a large class of quantum sources and prove a quantum analog of the asymptotic equipartition property. Our proof relies on using local measurements on the quantum source to obtain an associated classical source. The classical source provides an upper bound for the dimension of the relevant subspace of the quantum source, via the Shannon ...
arxiv +1 more source
Where Are the Binary Source Gravitational Microlensing Events? II [PDF]
CNU-A&SS-05/08, 1998 Currently, 6 candidate binary lens events have been reported, while only a single candidate binary source event has been reported. To account for the rarity of binary source events, Dominik pointed out that for a typical binary source event the separation between the component source stars is very large, resulting in large difference in impact ...
arxiv +1 more source
Radio Counterparts of Gamma-Ray Sources in the Cygnus Region [PDF]
The Astrophysical Journal Supplement Series, 2021 Abstract The view of the gamma-ray universe is being continuously expanded by space high-energy (HE) and ground-based very-high-energy (VHE) observatories. Yet, the angular resolution limitation still precludes a straightforward identification of these gamma-ray emitting sources.
N. L. Isequilla +6 more
openaire +7 more sources
XID II: Statistical Cross-Association of ROSAT Bright Source Catalog X-ray Sources with 2MASS Point Source Catalog Near-Infrared Sources [PDF]
Astrophys.J.Suppl.184:138-151, 2009, 2009 The 18806 ROSAT All Sky Survey Bright Source Catalog (RASS/BSC) X-ray sources are quantitatively cross-associated with near-infrared (NIR) sources from the Two Micron All Sky Survey Point Source Catalog (2MASS/PSC). An association catalog is presented, listing the most likely counterpart for each RASS/BSC source, the probability Pid that the NIR source
arxiv +1 more source
CATACLYSMIC VARIABLES AND GAMMA-RAY SOURCES [PDF]
EAS Publications Series, 2013 The cataclysmic variables are associated with high energy events and probably many of them could be potential gamma-ray sources. Up to now Fermi-LAT detected 3 gamma-ray transients, which belong to CVs and related objects: V407 Cyg, N Sco 2012 and N Mon 2012 = V959 Mon. We present the first multicolour observations of the slow classical nova V959 Mon.
Sergey Yu. Shugarov +4 more
openaire +2 more sources
The Astrophysical Journal, 2023 We present a comprehensive study of 29 short gamma-ray bursts (SGRBs) observed ≈0.8−60 days postburst using Chandra and XMM-Newton. We provide the inferred distributions of the SGRB jet opening angles and true event rates to compare against neutron star ...
A. Rouco Escorial +16 more
doaj +1 more source
The Upcoming GAMMA-400 Experiment
Universe, 2023 The upcoming GAMMA-400 experiment will be implemented aboard the Russian astrophysical space observatory, which will be operating in a highly elliptical orbit over a period of 7 years to provide new data on gamma-ray emissions and cosmic-ray electron ...
Sergey I. Suchkov +18 more
doaj +1 more source
Improving Source Separation by Explicitly Modeling Dependencies Between Sources [PDF]
arXiv, 2022 We propose a new method for training a supervised source separation system that aims to learn the interdependent relationships between all combinations of sources in a mixture. Rather than independently estimating each source from a mix, we reframe the source separation problem as an Orderless Neural Autoregressive Density Estimator (NADE), and ...
arxiv