Results 21 to 30 of about 167,860 (299)

A beamline to control longitudinal phase space whilst transporting laser wakefield accelerated electrons to an undulator

open access: yesScientific Reports, 2023
Laser wakefield accelerators (LWFAs) can produce high-energy electron bunches in short distances. Successfully coupling these sources with undulators has the potential to form an LWFA-driven free-electron laser (FEL), providing high-intensity short ...
Kay A. Dewhurst   +7 more
doaj   +1 more source

Pulsar: Efficient Sphere-based Neural Rendering

open access: yesComputer Vision and Pattern Recognition, 2021
We propose Pulsar, an efficient sphere-based differentiable rendering module that is orders of magnitude faster than competing techniques, modular, and easy-to-use due to its tight integration with PyTorch.
Christoph Lassner, M. Zollhöfer
semanticscholar   +1 more source

The Parkes Pulsar Timing Array project: second data release [PDF]

open access: yesPublications Astronomical Society of Australia, 2020
We describe 14 yr of public data from the Parkes Pulsar Timing Array (PPTA), an ongoing project that is producing precise measurements of pulse times of arrival from 26 millisecond pulsars using the 64-m Parkes radio telescope with a cadence of ...
M. Kerr   +29 more
semanticscholar   +1 more source

Vacuum ultraviolet coherent undulator radiation from attosecond electron bunches

open access: yesScientific Reports, 2021
Attosecond duration relativistic electron bunches travelling through an undulator can generate brilliant coherent radiation in the visible to vacuum ultraviolet spectral range.
Enrico Brunetti   +9 more
doaj   +1 more source

Spun-Up Rotation-Powered Magnetized White Dwarfs in Close Binaries as Possible Gamma-ray Sources: Signatures of Pulsed Modulation from AE Aquarii and AR Scorpii in Fermi-LAT Data

open access: yesGalaxies, 2023
In this paper, the possibility of periodic pulsar-like gamma-ray emission from the white dwarfs in AE Aquarii and AR Scorpii is investigated. We show that the white dwarf magnetospheres in AE Aquarii and AR Scorpii can possibly induce potentials to ...
Pieter J. Meintjes   +3 more
doaj   +1 more source

GW190814's Secondary Component with Mass 2.50–2.67 M⊙ as a Superfast Pulsar [PDF]

open access: yesAstrophysical Journal, 2020
We use Stergioulas’s RNS code for investigating fast pulsars with equations of state (EOSs) on the causality surface (where the speed of sound is equal to that of light) of the high-density EOS parameter space satisfying all known constraints from both ...
Naibo Zhang, Bao-An Li
semanticscholar   +1 more source

A NICER View of PSR J0030+0451: Millisecond Pulsar Parameter Estimation [PDF]

open access: yesAstrophysical Journal, 2019
We report on Bayesian parameter estimation of the mass and equatorial radius of the millisecond pulsar PSR J0030+0451, conditional on pulse-profile modeling of Neutron Star Interior Composition Explorer X-ray spectral-timing event data.
T. E. Riley   +15 more
semanticscholar   +1 more source

The MeerKAT telescope as a pulsar facility: System verification and early science results from MeerTime [PDF]

open access: yesPublications Astronomical Society of Australia, 2020
We describe system verification tests and early science results from the pulsar processor (PTUSE) developed for the newly commissioned 64-dish SARAO MeerKAT radio telescope in South Africa.
M. Bailes   +74 more
semanticscholar   +1 more source

HISTORY OF LOW-FREQUENCY RESEARCH OF PULSARS [PDF]

open access: yesRadio Physics and Radio Astronomy, 2021
Purpose: The main most pronounced events, which occurred in the initial period of the pulsars’ study at the decameter wavelength range, are presented.
O. M. Ulyanov
doaj   +1 more source

The Pulsar Wind Nebula of the Geminga Pulsar [PDF]

open access: yesThe Astrophysical Journal, 2006
Revised version: data analysis described in more detail, Figure 2 replaced; 6 pages, 2 color figures; accepted for publication in ApJ (v.643, 2006 June 1)
George G. Pavlov   +2 more
openaire   +2 more sources

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