Astrophysics and Space Science

, Volume 28, Issue 1, pp L11–L15 | Cite as

Cosmic gamma-ray emission and comet collisions with compact stars

  • O. Kh. Guseinov
  • V. Vanýsek
Letter to the Editor


The probability that γ-ray bursts may be generated by the infall of comet-like objects on the neutron stars, as recently proposed by Harwit and Salpeter (1973), is reexamined. Although hypothetical cometary clouds around the parent star may survive the supernova outburst virtually untouched, the frequency of γ-outbursts due to the comet impact on the neutron star or white dwarf is only about 10−3 of the observed occurrence. A considerably higher rate of comets passing per year at critical periastron distance must be assumed if the γ-ray outbursts are to be due to the collision of coments with compact stars.


Neutron Star White Dwarf Compact Star Parent Star Comet Impact 
These keywords were added by machine and not by the authors. This process is experimental and the keywords may be updated as the learning algorithm improves.


  1. Akhundova, N. A. and Guseinov, O. Kh.: 1973,Tsirk. Shemakh. Obs. AN AzerbSSR, No. 5.Google Scholar
  2. Cline, T. L., Desai, U. D., Klebesadel, R. W., and Strong, J. B.: 1973,Astrophys. J. Letters 185, L1.Google Scholar
  3. Colgate, S.: 1974,Astrophys. J. 187, 333.Google Scholar
  4. Guseinov, O.Kh.: 1972,Peremen. Zvyozdy 18, 443.Google Scholar
  5. Guseinov, O.Kh. and Kasumov, F. K.: 1973,Astron. Zh. 50, 1166.Google Scholar
  6. Guseinov, O.Kh. and Navruzova, Kh.I.: 1974,Astrofizika, in print.Google Scholar
  7. Guseinov, O.Kh., Kasumov, F. K., Lazarev, V. I. and Osipchuk, A. V.: 1973,Astron. Zh. 50, 39.Google Scholar
  8. Harwit, M. and Salpeter, E. E.: 1973,Astrophys. J. Letters 186, L37.Google Scholar
  9. Klebesadel, R. W., Strong, J. B., and Olson, R. A.: 1973,Astrophys. J. Letters 182, L89.Google Scholar
  10. Kresák, L.: 1974,Bull. Astron. Inst. Czech. 25, in press.Google Scholar
  11. Kříž, S.: 1973,Nature Phys. Sci. 245, 46.Google Scholar
  12. Lamb, D. Q., Lamb, F. K., and Pines, D.: 1973,Nature Phys. Sci. 246, 52.Google Scholar
  13. Ostriker, P. J., Rees, M. J., and Silk, J.: 1970,Astrophys. J. Letters 6, L179.Google Scholar
  14. Stecker, F. W. and Frost, K. J.: 1973,Nature Phys. Sci. 245, 70.Google Scholar
  15. Trimble, V.: 1971, in R. D. Davies and F. G. Smith (eds.), ‘The Crab Nebula’,IAU Symp. 46, 12.Google Scholar

Copyright information

© D. Reidel Publishing Company 1974

Authors and Affiliations

  • O. Kh. Guseinov
    • 1
  • V. Vanýsek
    • 2
  1. 1.Shemakha Astrophysical ObservatoryShemakhaU.S.S.R.
  2. 2.Dept. of Astronomy and AstrophysicsCharles UniversityPragueCzechoslovakia

Personalised recommendations