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200 papers

This communication is devoted to a brief historical framework and to a comprehensive critical discussion concerning foundational issues of Electrodynamics. Attention is especially focused on the events which, about the end of XIX century,…

General Physics · Physics 2021-11-11 Giovanni Romano

It is known that the concept of limiting polarization introduced seventy years ago by K G Budden has the capacity to explain the magnitude of circular polarization seen in normal pulsars with rotation periods of the order of one second…

High Energy Astrophysical Phenomena · Physics 2020-10-07 P B Jones

I survey recent successes in the application of relativistic MHD and force-free electrodynamics to the modeling of the pulsars' rotational energy loss mechanism as well as to the structure and emission characteristics of Pulsar Wind…

Astrophysics · Physics 2007-08-09 Jonathan Arons

It has recently been demonstrated that self-consistent particle-in-cell simulations of low-obliquity pulsar magnetospheres in flat spacetime show weak particle acceleration and no pair production near the poles. We investigate the validity…

High Energy Astrophysical Phenomena · Physics 2015-12-16 Alexander A. Philippov , Benoît Cerutti , Alexander Tchekhovskoy , Anatoly Spitkovsky

Classical Electrodynamics is not a consistent theory because of its field inadequate behaviour in the vicinity of their sources. Its problems with the electron equation of motion and with non-integrable singularity of the electron self…

High Energy Physics - Theory · Physics 2008-02-03 Manoelito M. de Souza

Pulsars provide a wealth of information about General Relativity, the equation of state of superdense matter, relativistic particle acceleration in high magnetic fields, the Galaxy's interstellar medium and magnetic field, stellar and…

Astrophysics of Galaxies · Physics 2015-05-19 D. R. Lorimer , M. A. McLaughlin

Landau and Peierls wrote down the Hamiltonian of a simplified version of quantum electrodynamics in the particle-position representation. We present a multi-time version of their Schr\"odinger equation, which bears several advantages over…

Quantum Physics · Physics 2025-05-15 Matthias Lienert , Roderich Tumulka

About two years ago, Wolszczan and Frail announced the detection of a possible planetary system consisting of two Earth-mass planets around a millisecond pulsar. It was pointed out shortly thereafter that the mutual gravitational…

Astrophysics · Physics 2007-05-23 Renu Malhotra

The problems considered refer to the material equations of electric- and magnetoelectric induction. Some contradictions found in fundamental studies on classical electrodynamics have been explained. The notion magnetoelectric induction has…

General Physics · Physics 2007-05-23 F. F. Mende

This thesis focuses on the study of binary radio pulsars, their evolution and some specific use of their properties to investigate fundamental physics such as general relativity and other gravitational theories. The work that we present…

Solar and Stellar Astrophysics · Physics 2009-07-16 Rene P. Breton

Forty years after the discovery of rotation-powered pulsars, we still do not understand many aspects of their pulsed emission. In the last few years there have been some fundamental developments in acceleration and emission models. I will…

Astrophysics · Physics 2007-10-19 Alice K. Harding

We reconstruct a 3+1 formalism of general relativistic electromagnetism, and derive the equations of motion of charged particles in the pulsar magnetosphere, taking account of the inclination between the rotation axis and the magnetic axis.…

Astrophysics · Physics 2009-11-07 Nobuyuki Sakai , Shinpei Shibata

Following the basic principles of a charge separated pulsar magnetosphere \citep{goldreich1969}, we consider the magnetosphere be stationary in space, instead of corotating, and the electric field be uploaded from the potential distribution…

High Energy Astrophysical Phenomena · Physics 2015-07-01 K. H. Tsui

Ever since the first pulsar was discovered by Bell and Hewish over 40 years ago, we've known that not only are pulsars fascinating and truly exotic objects, but that we can use them as powerful tools for basic physics and astrophysics as…

High Energy Astrophysical Phenomena · Physics 2015-06-12 Scott M. Ransom

We reconsider pulsar electrodynamics for an obliquely rotating pulsar, and propose a way of synthesizing the vacuum dipole model (VDM) and the rotating magnetosphere model (RMM). We first modify the VDM by assuming that the parallel…

Solar and Stellar Astrophysics · Physics 2013-10-07 Donald B. Melrose , Rai Yuen

We investigate the self-consistent electrodynamic structure of a particle accelerator in the Crab pulsar magnetosphere on the two-dimensional poloidal plane, solving the Poisson equation for the electrostatic potential together with the…

Astrophysics · Physics 2008-11-26 Kouichi Hirotani

We present results of more than three decades of timing measurements of the first known binary pulsar, PSR B1913+16. Like most other pulsars, its rotational behavior over such long time scales is significantly affected by small-scale…

Astrophysics of Galaxies · Physics 2011-06-08 Joel M. Weisberg , David J. Nice , Joseph H. Taylor

The two-fluid effects on the radial outflow of relativistic electron-positron plasma are considered. It is shown that for large enough Michel magnetization parameter (1969) and multiplication parameter, the one-fluid MHD approximation…

Astrophysics · Physics 2016-08-30 V. S. Beskin , R. R. Rafikov

We generalize a formula for the Goldreich-Julian charge density (\rho), originally derived for rotating neutron star, for arbitrary oscillations of a neutron star with arbitrary magnetic field configuration under assumption of low current…

Astrophysics · Physics 2009-10-31 A. N. Timokhin , G. S. Bisnovatyi-Kogan , H. C. Spruit

Pulsars are precision celestial clocks. When being put in a binary, the ticking conveys the secret of underlying spacetime geometrodynamics. We use pulsars to test if the gravitational interaction possesses a tiny deviation from Einstein's…

General Relativity and Quantum Cosmology · Physics 2020-05-01 Lijing Shao