Hostname: page-component-586b7cd67f-dlnhk Total loading time: 0 Render date: 2024-11-26T07:00:34.283Z Has data issue: false hasContentIssue false
  • English
  • Français

Evolution of the Magnetic Field of a Neutron Star During Polar-Cap Accretion

Published online by Cambridge University Press:  12 April 2016

A. Melatos  and
E. S. Phinney
A. Melatos
Affiliation:
Department of Astronomy, 601 Campbell Hall, University of California at Berkeley, Berkeley CA 94720USA
E. S. Phinney
Affiliation:
Theoretical Astrophysics, Mail Code 130–33, California Institute of Technology, Pasadena CA 91125USA

Extract

Core share and HTML view are not available for this content. However, as you have access to this content, a full PDF is available via the ‘Save PDF’ action button.

Neutron stars that have experienced episodes of mass transfer exhibit lower magnetic dipole moments μ than other neutron stars, e.g. binary radio pulsars with high-mass (μ ∼ 1028G cm3) and low-mass (μ ∼ 1027G cm3) companions, isolated millisecond pulsars (μ ∼ 1026G cm3), and accreting objects in low-mass X-ray binaries (μ < 1027G cm3). Indeed, the μ-versus-orbital-period and μ-versus-age relations for low-mass and high-mass binaries imply that μ decreases monotonically with accreted mass Ma (Taam & van den Heuvel 1986; van den Heuvel & Bitzaraki 1995). Simple Ohmic field decay cannot be responsible given the existence of cold and therefore old white-dwarf companions (Kulkarni 1986). Alternative mechanisms include accretion-induced heating of the crust (Konar & Bhattacharya 1997) and fluxoid-vortex interactions in the stellar interior (Srinivasan et al. 1990).

Type
Part 9. Population and Neutron Star Properties
Information
International Astronomical Union Colloquium , Volume 177: Pulsar Astronomy - 2000 and Beyond , 2000 , pp. 651 - 652
Copyright
Copyright © Astronomical Society of the Pacific 2000

References

Brown, E.F., Bildsten, L., 1998, ApJ, 496, 915 CrossRefGoogle Scholar
Konar, S., Bhattacharya, D., 1997, MNRAS, 284, 311 CrossRefGoogle Scholar
Kulkarni, S.R., 1986, ApJ, 306, L85 CrossRefGoogle Scholar
Melatos, A., Phinney, E.S., 1999, ApJ, submittedGoogle Scholar
Romani, R.W., 1990, Nature, 347, 741 CrossRefGoogle Scholar
Srinivasan, G., Bhattacharya, D., Muslimov, A., Tsygan, A. 1990, Curr. Sci., 59, 31 Google Scholar
Taam, R.E., van den Heuvel, E.P.J., 1986, ApJ, 305, 235 CrossRefGoogle Scholar
Uchida, Y., Low, B.C., 1981, J.Astrophys. Ast., 2, 405 CrossRefGoogle Scholar
van den Heuvel, E.P.J., Bitzaraki, O., 1995, A&A, 297, L41 Google Scholar