Pulsar Magnetosphere and Wind

A special issue of Universe (ISSN 2218-1997). This special issue belongs to the section "Compact Objects".

Deadline for manuscript submissions: closed (28 February 2022) | Viewed by 2397

Special Issue Editor


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Guest Editor
Observatoire Astronomique de Strasbourg, Université de Strasbourg, 67000 Strasbourg, France
Interests: neutron stars; pulsar magnetosphere and wind; relativistic plasmas; electromagnetism; general relativity; radiative processes; numerical methods

Special Issue Information

Dear Colleagues,

Neutron stars are fascinating astrophysical objects immersed in strong gravitational and electromagnetic fields. They usually manifest as pulsars, emitting a very stable and broadband electromagnetic signal detected from the radio wavelength up to the hardest gamma rays in the GeV and TeV range. Although discovered more than fifty years ago, they still remain mysterious compact objects. Recent years have witnessed dramatic progress in our understanding of pulsar physics thanks to the development of numerical simulations, laying down the fundamental theoretical aspects of their magnetosphere and wind. Therefore, a global but still rather qualitative picture has slowly emerged on the largest scale. However, some considerations about pulsar magnetospheres remain speculative. For instance, the exact composition and particle dynamics within their magnetosphere, including radiative feedback, is not yet satisfactorily solved. Given the current exciting developments on both theoretical and observational sides, a Special Issue focusing on neutron star magnetosphere and wind is timely.

The purpose of this Special Issue is to account for the latest results in the theory of pulsar magnetospheres and winds, emphasizing the physical insight gained from observational signatures of multi-wavelength pulsed emission. This Special Issue will report recent progress in pulsar electrodynamics, providing the reader with an up-to-date overview of the recent advances in the field, reflecting the current state-of-the-art and progress expected in the near future.

We welcome the contribution of original and review papers related to this continuously evolving area of research.

Dr. Jérôme Pétri
Guest Editor

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Keywords

  • neutron stars
  • electrodynamics
  • general relativity
  • relativistic plasmas
  • radiation processes

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Published Papers (1 paper)

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Research

10 pages, 281 KiB  
Communication
A Novel Mechanism of Pair Creation in Pulsar Magnetospheres
by Zaza Osmanov, George Machabeli and Nino Chkheidze
Universe 2021, 7(9), 331; https://doi.org/10.3390/universe7090331 - 6 Sep 2021
Cited by 1 | Viewed by 1861
Abstract
In this paper we study the possibility of efficient pair production in a pulsar’s magnetosphere. It has been shown that by means of relativistic centrifugal force the electrostatic field exponentially amplifies. As a result the field approaches the Schwinger limit leading to a [...] Read more.
In this paper we study the possibility of efficient pair production in a pulsar’s magnetosphere. It has been shown that by means of relativistic centrifugal force the electrostatic field exponentially amplifies. As a result the field approaches the Schwinger limit leading to a pair creation process in the light cylinder area where the effects of rotation are very efficient. Analysing the parameters of the normal period (∼1 s) pulsars we found that the process is so efficient that the number density of electron–positron pairs exceeds the Goldreich–Julian density by five orders of magnitude. Full article
(This article belongs to the Special Issue Pulsar Magnetosphere and Wind)
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