Tootfinder

On the transition stage of pulsar pulsed radio emission and its potential association with radio pulsar nulling
Shuang Du
https://arxiv.org/abs/2404.03669 …

On the transition stage of pulsar pulsed radio emission and its potential association with radio pulsar nulling
While the precise mechanism of generating pulsed coherent radio emission from pulsars remains elusive, certain gap-invoking models (especially, the inner gap model) offer a comprehensive and plausible explanation for the genesis and termination of such emissions. However, the transition stage between the period of persistent radio emission and the period of radio quiet remains poorly understood, despite observations indicating that a radio pulsar in the pulse nulling state is undergoing the tra…

#LB E, mais uma vez, a minha tootline estš fazendo eu me sentir um idoso kkkk.
E, sim, é a melhor música dela, o coral é ótimo e a letra tem uma certa intensidade.
Algum tempo depois, a Madonna mudou de estilo e a partir daí só fez músicas horríveis rs.

Dynamics of McMillan mappings II. Axially symmetric map
Tim Zolkin, Brandon Cathey, Sergei Nagaitsev
https://arxiv.org/abs/2405.05657 https://

Dynamics of McMillan mappings II. Axially symmetric map
In this article, we investigate the transverse dynamics of a single particle in a model integrable accelerator lattice, based on a McMillan axially-symmetric electron lens. Although the McMillan e-lens has been considered as a device potentially capable of mitigating collective space charge forces, some of its fundamental properties have not been described yet. The main goal of our work is to close this gap and understand the limitations and potentials of this device. It is worth mentioning tha…

Simulation of Gacs' Automaton
Atsushi Masumori, Lana Sinapayen, Takashi Ikegami
https://arxiv.org/abs/2405.04060 https://arxiv.or…

Simulation of Gacs' Automaton
Peter Gacs proposed a one-dimensional cellular automaton capable of a robust self-reproduction. Because the automaton is exceptionally large and complicated, very few people have ever succeeded in simulating it on a computer or analyzing its behavior. Here we demonstrate a partial simulation of Gacs' automaton (of Gray's version), discussing its robustness. We also discuss the potential applications of Gacs' framework.

Proposed high order harmonic interferometer for aperture synthesis radio telescope: Theory and computer simulation
Nailong Wu
https://arxiv.org/abs/2403.02511

Proposed high order harmonic interferometer for aperture synthesis radio telescope: Theory and computer simulation
A new type of interferometer, called High Order Harmonic Interferometer (HOHI), was proposed by Wu (1996) for imaging by aperture synthesis radio telescope. Its feasibility was proven by theoretical analysis. Before putting HOHI in practical use, computer simulation is a necessary intermediate stage. In this paper the theoretical analysis is reviewed. Then, computer simulation, including its algorithm, calculation and generated maps, is presented. The theoretical analysis is validated by studyi…

Optical and transport properties of NbN thin films revisited
Samuel Kern, Pavol Neilinger, Magdal\'ena Pol\'a\v{c}kov\'a, Martin Bar\'anek, Tom\'a\v{s} Plecenik, Tom\'a\v{s} Roch, Miroslav Grajcar
https://arxiv.org/abs/2405.03704

Optical and transport properties of NbN thin films revisited
Highly disordered NbN thin films exhibit promising superconducting and optical properties. Despite extensive study, discrepancies in its basic electronic properties persist. Analysis of the optical conductivity of disordered ultra-thin NbN films, obtained from spectroscopic ellipsometry by standard Drude-Lorentz model, provides inconsistent parameters. We argue that this discrepancy arise from neglecting the presence of quantum corrections to conductivity in the IR range. To resolve this matter…

Simulation of Gacs' Automaton
Atsushi Masumori, Lana Sinapayen, Takashi Ikegami
https://arxiv.org/abs/2405.04060 https://arxiv.or…

Simulation of Gacs' Automaton
Peter Gacs proposed a one-dimensional cellular automaton capable of a robust self-reproduction. Because the automaton is exceptionally large and complicated, very few people have ever succeeded in simulating it on a computer or analyzing its behavior. Here we demonstrate a partial simulation of Gacs' automaton (of Gray's version), discussing its robustness. We also discuss the potential applications of Gacs' framework.

This https://arxiv.org/abs/2404.09418 has been replaced.
initial toot: https://mastoxiv.page/@arXiv_…

Polarized radio emission of RRAT J1854+0306
Polarized radio emission of RRAT J1854+0306 is investigated with single pulses using FAST. Its emission is characterized by nulls, narrow and weak pulses and occasional wide and intense bursts with a nulling fraction of 53.2%. Its burst emission is typically of one rotation, and occasionally of two or three or even 5 rotations at the most, but without significant periodicity. The integrated pulse profile has a `S' shaped position angle curve that is superposed with orthogonal modes, from which …

On Modeling Adequacy and Stability Analysis of IBR-related Subsynchronous Oscillations in Multimachine Systems
Lilan Karunaratne, Nilanjan Ray Chaudhuri, Amirthagunaraj Yogarathnam, Meng Yue
https://arxiv.org/abs/2403.07835

On Modeling Adequacy and Stability Analysis of IBR-related Subsynchronous Oscillations in Multimachine Systems
Time-varying phasor-based analysis of subsynchronous oscillations (SSOs) involving grid-following converters (GFLCs) and its benchmarking with electromagnetic transient (EMT) models have so far been restricted to highly simplified grid models with constant voltage sources behind series R-L circuits. In this paper, modeling adequacy of bulk power systems with synchronous generators (SGs), transmission systems, loads, and GFLCs are considered. To this end, we revisit the notions of time-varying p…

On the c-k constrained KP and BKP hierarchies: the Fermionic pictures, solutions and additional symmetries
Kelei Tian, Song Li, Ge Yi, Ying Xu, Jipeng Cheng
https://arxiv.org/abs/2402.17503

On the c-k constrained KP and BKP hierarchies: the Fermionic pictures, solutions and additional symmetries
In this paper, we study two generalized constrained integrable hierarchies, which are called the $c$-$k$ constrained KP and BKP hierarchies. The Fermionic picture of the $c$-$k$ constrained KP hierarchy is given. We give some solutions for the $c$-$k$ constrained KP hierarchy by using the free Fermion operators and define its additional symmetries. Its additional flows form a subalgebra of the Virasoro algebra. Furthermore, the additional flows acting on eigenfunctions $q_{i}(t)$ and adjoint ei…