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Related papers: The braking indices in pulsar emission models

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An isolated pulsar is a rotating neutron star possessing a high magnetic dipole moment that generally makes a finite angle with its rotation axis. As a consequence, the emission of magnetic dipole radiation (MDR) continuously takes away its…

High Energy Astrophysical Phenomena · Physics 2023-02-28 E. C. A. Araujo , V. A. De Lorenci , P. Peter , L. S. Ruiz

A new method for determining the accelerating potential above the polar caps of radio pulsars with an arbitrary inclination angle of the magnetic axis to the rotation axis has been proposed. The approach has been based on the concept of a…

High Energy Astrophysical Phenomena · Physics 2025-05-19 A. Yu. Istomin , F. A. Kniazev , V. S. Beskin

Nonlinear Compton scattering is calculated for the collision of an electron with a plane wave pulse. A mid infra-red (IR) peak arises in the photon spectrum due to long-range interference associated with the pulse envelope. The case of a…

High Energy Physics - Phenomenology · Physics 2021-03-03 B. King

We investigate particle accelerators in rotating neutron-star magnetospheres, by simultaneously solving the Poisson equation for the electrostatic potential together with the Boltzmann equations for electrons, positrons and photons on the…

Astrophysics · Physics 2007-05-23 Kouichi Hirotani

The popular outer gap model of magnetospheric emission from pulsars has been widely applied to explain the properties observed in $\gamma$-rays. However, its quantitative predictions rely on a number of approximations and assumptions that…

High Energy Astrophysical Phenomena · Physics 2014-12-05 Daniele Viganò , Diego F. Torres , Kouichi Hirotani , Martín E. Pessah

Despite some success in explaining the observed polarisation angle swing of radio pulsars within the geometric rotating vector model, many deviations from the expected S-like swing are observed. In this paper we provide a simple and…

Solar and Stellar Astrophysics · Physics 2009-11-13 A. Karastergiou

Pulsed emission from gamma-ray pulsars originates inside the magnetosphere, from radiation by charged particles accelerated near the magnetic poles or in the outer gaps. In polar cap models, the high energy spectrum is cut off by magnetic…

Astrophysics · Physics 2009-10-31 Alice K. Harding

The purpose of this paper is to suggest how detailed single-pulse observations of ``slow'' radio pulsars may be utilized to construct an empirical model for their emission. It links the observational synthesis developed in a series of…

Astrophysics · Physics 2009-11-07 Joanna M. Rankin , Geoffrey A. E. Wright

The magnetic dipole radiation (MDR) model is currently the best approach we have to explain pulsar radiation. However a most characteristic parameter of the observed radiation, the braking index n$_{\rm obs}$ shows deviations for all the…

High Energy Astrophysical Phenomena · Physics 2016-10-05 Oliver Q. Hamil , Nick J. Stone , Jirina R. Stone

The magnetized induced Compton scattering off the particles of the ultrarelativistic electron-positron plasma of pulsar is considered. The main attention is paid to the transverse regime of the scattering, which holds in a moderately strong…

Astrophysics · Physics 2009-11-13 S. A. Petrova

The multi-wavelength pulsed emission from young pulsars and millisecond pulsars can be well modeled with the single-pole 3-dimension annular gap and core gap model. To distinguish our single magnetic pole model from two-pole models (e.g.…

High Energy Astrophysical Phenomena · Physics 2015-06-11 YuanJie Du , GuoJun Qiao

We explore particle accelerator electrodynamics in the magnetosphere of a rapidly rotating neutron star (NS). We address the importance of a self-consistent treatment of pair production, solving the Poisson equation describing the…

Astrophysics · Physics 2008-09-09 Kouichi Hirotani

The energy range of IBIS is a promising ground for testing mutual relations of distinct components expected in the spectra of high-energy radiation from rotation powered pulsars. According to some polar-cap models two such components - due…

Astrophysics · Physics 2007-05-23 J. Dyks , B. Rudak , T. Bulik

We reinvestigate the radio pulsar ``death lines'' within the framework of two different types of polar cap acceleration models, i.e., the vacuum gap model and the space-charge-limited flow model, with either curvature radiation or inverse…

Astrophysics · Physics 2009-10-31 Bing Zhang , Alice K. Harding , Alexander G. Muslimov

The pulsar wind model is updated by considering the effect of particle density and pulsar death. It can describe both the short term and long term rotational evolution of pulsars consistently. It is applied to model the rotational evolution…

High Energy Astrophysical Phenomena · Physics 2015-06-23 F. F. Kou , H. Tong

Sub-pulse drifting has been regarded as one of the most insightful aspects of the pulsar radio emission. The phenomenon is generally explained with a system of emission sub-beams rotating around the magnetic axis, originating from a…

High Energy Astrophysical Phenomena · Physics 2018-08-22 Yogesh Maan

For sufficiently strong magnetic fields and/or low temperatures, the neutron star surface may be in a condensed state with little gas or plasma above it. Such surface condensation can significantly affect the thermal emission from isolated…

Astrophysics · Physics 2012-07-31 Zach Medin , Dong Lai

The observed braking index n_{obs} which had been determined for a few young pulsars, had been found to differ from the expected value for a rotating magnetic dipole model. Also, the observational jerk parameter, determined for two of these…

Astrophysics · Physics 2007-05-23 M. P. Allen , J. E. Horvath

Pulsars are good clocks in the universe. One fundamental question is that why they are good clocks? This is related to the braking mechanism of pulsars. Nowadays pulsar timing is done with unprecedented accuracy. More pulsars have braking…

High Energy Astrophysical Phenomena · Physics 2016-01-14 H. Tong

We present a novel method that enables us to estimate the acceleration of individual millisecond pulsars (MSPs) using only their spin period and its time derivative. For our binary MSP sample, we show that one can obtain an empirical…

High Energy Astrophysical Phenomena · Physics 2025-05-23 Thomas Donlon , Sukanya Chakrabarti , Sophia Vanderwaal , Lawrence M. Widrow , Scott Ransom , Enrico Ramirez-Ruiz