Results 51 to 60 of about 16,509,412 (103)

A Late-time Radio Survey of Type Ia-CSM Supernovae with the Very Large Array

open access: yesThe Astrophysical Journal
Type Ia-CSM supernovae (SNe) are a rare and peculiar subclass of thermonuclear SNe characterized by emission lines of hydrogen or helium, indicative of high-density circumstellar medium (CSM). Their implied mass-loss rates of ∼10 ^−4 –10 ^−1 M _⊙ yr ^−1 (
Olivia Griffith   +10 more
doaj   +1 more source

Flow-Heat Conjugate Numerical Simulation Based on the Time-Domain Method

open access: yesXibei Gongye Daxue Xuebao, 2020
For the popups of the applicability of the time-domain based unsteady flow-heat coupling numerical simulation method in physical problems with time-period characteristic, the cases of the plate convection heat transfer and the hollow blunt-nosed blade ...

doaj   +1 more source

Evidence for Multiple Shocks from the γ-Ray Emission of RS Ophiuchi

open access: yesThe Astrophysical Journal, 2023
In 2021 August, the Fermi Large Area Telescope, H.E.S.S., and MAGIC detected GeV and TeV γ -ray emission from an outburst of recurrent nova RS Ophiuchi. This detection represents the first very high-energy γ -rays observed from a nova, and it opens a new
Rebecca Diesing   +6 more
doaj   +1 more source

A causal model for linear RF systems developed from frequency-domain measured data [PDF]

open access: yes, 2005
With the ever-growing complexity of interconnect networks, models developed from measured data or data from 3-D electromagnetic simulators are increasingly becoming essential. It is to this end that the current contribution is directed. In particular, it
Condon, Marissa   +2 more
core   +2 more sources

A 2.9 hr Periodic Radio Transient with an Optical Counterpart

open access: yesThe Astrophysical Journal Letters
We present a long-period radio transient (GLEAM-X J0704−37) discovered to have an optical counterpart, consistent with a cool main-sequence star of spectral type M3. The radio periodicity occurs at the longest period yet found, 2.9 hr, and was discovered
N. Hurley-Walker   +14 more
doaj   +1 more source

Evaluation of spectral domain and time domain optical coherence tomography findings in toxoplasmic retinochoroiditis

open access: yesClinical Ophthalmology, 2011
Bruno Diniz, Caio Regatieri, Rafael Andrade, Andre MaiaDepartment of Ophthalmology, Federal University of São Paulo, São Paulo, BrazilPurpose: To investigate spectral domain optical coherence tomography (SD-OCT) findings and compare
Diniz B, Regatieri C, Andrade R, Maia A
doaj  

Finite-volume time-domain (FVTD) modelling of a broadband double-ridged horn antenna

open access: yes, 2003
Copyright © 2004 John Wiley & Sons, Ltd.AbstractThis paper demonstrates the suitability of the finite‐volume time‐domain (FVTD) method to analyse electromagnetic ‘real‐world’ problems.
Vahldieck, R.   +3 more
core   +1 more source

Time domain reflectometry applied to MMIC passive component modeling [PDF]

open access: yes, 1989
The time domain facilities of a network analyzer, combined with the tools of network synthesis, were recently used for experimental modeling of discontinuities in an S-parameter measurement set, so as to allow the instrument calibration directly to the ...
C. Beccari   +5 more
core   +1 more source

An Investigation of the Accuracy of Finite-Volume Radial Domain Truncation Technique [PDF]

open access: yes, 2007
© Copyright 2007 IEEE. Personal use of this material is permitted. However, permission to reprint/republish this material for advertising or promotional purposes or for creating new collective works for resale or redistribution to servers or lists, or to
Vahldieck, R.   +5 more
core   +1 more source

Faster 3D finite element time domain : Floquet absorbing boundary condition modelling using recursive convolution and vector fitting [PDF]

open access: yes, 2009
A recursive convolution (RC) based on the vector fitting (VF) method and triangular temporal basis functions is employed to compute the Floquet absorbing boundary condition (FABC) formulation in the vector 3D finite element time-domain (FETD) modelling ...
Cai, Yong, Mias, Christos
core   +1 more source

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