Statistical Properties of Magnetic Fields and Fluxes of Neutron Stars

A. Kholtygin, E.I. Makarenko

Research output

Abstract

Young neutron stars (NS) of our Galaxy in the evolutionary stage before the death line can be divided into two groups: normal pulsars and magnetars with magnetic fields log(B)̃11-13 and log(B)̃14-15 respectively. The average magnetic fluxes (G cm2) of these groups are overline{log(Φ)} = 23.9 for normal pulsars and overline{log(Φ)} = 26.8 for magnetars. Massive OB stars, precursors of neutron stars, also can be divided into two groups: magnetic stars with average magnetic fields from several hundreds gauss to tens of kilogauss and non-magnetic or weakly magnetic stars, whose magnetic fields can not yet be measured accurately. The average magnetic flux of weakly magnetic stars can be estimated using recent measurements of the magnetic fields of selected A and B stars: Vega, Sirius A, and others. For such stars mean magnetic flux overline{log(Φ)}= 23.8 is close to the corresponding value for normal pulsars, whereas the average magnetic flux of magnetic OB stars is similar to that for magnetars. For this reason we assume that normal pulsars are descendants of weakly magnetic stars, and magnetars are progenitors of magnetic OB stars. The fraction of magnetars among NSs is only 1%, in contrast to the 7% fraction of magnetic stars among OB stars. The relatively small fraction of magnetars among neutron stars can be explained by their short lifetime.
Translated title of the contributionСтатистические свойства магнитных полей и потоков нейтронных звезд
Original languageEnglish
Title of host publicationPhysics of Magnetic Stars
Subtitle of host publicationProceedings of a Conference Held at Special Astrophysical Observatory, Nizhny Arkhyz, Russia, 1-5 October 2018
EditorsI.I. Romanyuk, I.A. Yakunin, D.O. Kudryavtsev
Place of PublicationSan Francisco
PublisherAstronomical Society of the Pacific
Pages108-110
ISBN (Electronic)9781586819241
ISBN (Print)9781583819234
Publication statusPublished - 1 Jul 2019
EventInternational Conference "Physics of Magnetic Stars" - Nizhny Arkhyz
Duration: 1 Oct 20195 Oct 2019

Publication series

NameAstronomical Society of the Pacific conference series
PublisherAstronomical Society of the Pacific
Volume518
ISSN (Electronic)1050-3390

Conference

ConferenceInternational Conference "Physics of Magnetic Stars"
CountryRussian Federation
CityNizhny Arkhyz
Period1/10/195/10/19

Scopus subject areas

  • Physics and Astronomy(all)
  • Astronomy and Astrophysics

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    Kholtygin, A., & Makarenko, E. I. (2019). Statistical Properties of Magnetic Fields and Fluxes of Neutron Stars. In I. I. Romanyuk, I. A. Yakunin, & D. O. Kudryavtsev (Eds.), Physics of Magnetic Stars: Proceedings of a Conference Held at Special Astrophysical Observatory, Nizhny Arkhyz, Russia, 1-5 October 2018 (pp. 108-110). (Astronomical Society of the Pacific conference series; Vol. 518). Astronomical Society of the Pacific. http://aspbooks.org/custom/publications/paper/518-0108.html