Astrophysics and Space Science

, Volume 45, Issue 1, pp 21–25 | Cite as

Possible accretion instabilities on magnetized rotating neutron stars

  • J. Švestka
Article

Abstract

The high energy particles emitted by a pulsar prevent the accretion of the interstellar matter onto the star. However, during the life of a pulsar the energy output decreases and after elapsing of critical timetcr the pulsar mechanism is obviously inhibited and matter may penetrate through the radius of capturer a . It is proposed that a possible accumulation of this matter in the regionrr c , wherer c is the corotational radius, is followed by a sudden fall onto the stellar surface. Short bursts of high energy photons may be expected as a result. A possible explanation of recently observed gamma-ray bursts by this mechanism is discussed.

Keywords

Energy Photon Neutron Star Energy Output Energy Particle High Energy Photon 

Preview

Unable to display preview. Download preview PDF.

Unable to display preview. Download preview PDF.

References

  1. Dyson, F.: 1971, ‘Neutron Stars and Pulsars’, Fermi Lectures 1970, Accademic Nazionale dei Lincei, Roma.Google Scholar
  2. Gunn, J. E. and Ostriker, J. P.: 1970,Astrophys. J. 160, 979.Google Scholar
  3. Chanmugan, G. and Gabriel, M.: 1971,Astron. Astrophys. 11, 268.Google Scholar
  4. Illarionov, A. F. and Sunyaev, J. P.: 1975,Astron. Astrophys. 39, 185.Google Scholar
  5. Lamb, F. K., Pethick, C. J., and Pines, D.: 1973,Astrophys. J. 184, 271.Google Scholar
  6. Ostriker, J. P., Rees, M. J., and Silk, J.: 1970,Astrophys. Letters 6, 179.Google Scholar
  7. Roberts, D. H. and Sturrock, P. A.: 1973,Astrophys. J. 181, 161.Google Scholar
  8. Strong, I. B. (ed.): 1973, Proc. Los Alamos Conf. on Transient Gamma and X-Ray Sources, Los Alamos Report 5505-C.Google Scholar
  9. ter Haar, D.: 1972, ‘Pulsars’, Physics Reports, Vol. 3C, No. 2, MarchGoogle Scholar
  10. Zeldovich, Ya. B. and Novikov, I. D.: 1971,Relativistic Astrophysics, Univ. Chicago Press, Chicago.Google Scholar

Copyright information

© D. Reidel Publishing Company 1976

Authors and Affiliations

  • J. Švestka
    • 1
  1. 1.Department of Astronomy and AstrophysicsCharles UniversityPragueCzechoslovakia

Personalised recommendations