Advertisement

Astrophysics and Space Science

, Volume 109, Issue 2, pp 293–307 | Cite as

One-photon and two-photon annihilation lines in gamma-bursts, I

  • V. V. Zheleznyakov
  • A. A. Litvinchuk
Article

Abstract

This paper and subsequent Paper II are an investigation of the annihilation line formation in gamma-ray bursts based on the assumption of positron production in a strong magnetic field (because of one-photon absorption of hard gamma-quanta radiated in the neutron star hot polar spot). We discuss a two-photon annihilation line in this paper. It is shown that if the star magnetic field is greater than 3×1012 G, the relative flux in the line depends solely on the hardness of the continuum and is, as a rule, less than or about 10–20% of the total flux. This is consistent with the spectral data recorded by ‘Venera-11’ and ‘Venera-12’ space probes. The annihilation region formation above the hot polar spot is discussed, and positron density and annihilation region dimensions are estimated.

Keywords

Magnetic Field Spectral Data Neutron Star Space Probe Strong Magnetic Field 
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.

Preview

Unable to display preview. Download preview PDF.

Unable to display preview. Download preview PDF.

References

  1. Baier, V. N. and Katkov, V. M.: 1967,Zh. Eksper. Teor. Fiz. 53, 1478 (Soviet Phys. JETP 26, 854).Google Scholar
  2. Barat, C.: 1983, in M. L. Burns, A. K. Harding, and R. Ramaty (eds.),Positron-Electron Pairs in Astrophysics, Goddard Space Flight Center, p. 54.Google Scholar
  3. Beskin, V. S.: 1982,Astrofizika 18, 439.Google Scholar
  4. Beskin, V. S.: 1983,Kratkie Soobshcheniya po Fizike (Soviet Phys. Lebedev Institute Reports) 4, 35.Google Scholar
  5. Bisnovatyi-Kogan, G. S. and Chechetkin, V. M.: 1983,Astrophys. Space Sci. 89, 447.Google Scholar
  6. Bisnovatyi-Kogan, G. S., Blinnikov, S. I., and Zakharov, A. F.: 1984,Astron. Zh. 61, 104.Google Scholar
  7. Daugherty, J. C. and Bussard, R. W.: 1980,Astrophys. J. 238, 296.Google Scholar
  8. Daugherty, J. C. and Harding, A. K.: 1983,Astrophys. J. 273, 761.Google Scholar
  9. Ellison, D. C. and Kazanas, D.: 1983,Astron. Astrophys. 128, 102.Google Scholar
  10. Elsner, R. F. and Lamb, F. K.: 1977,Astrophys. J. 215, 897.Google Scholar
  11. Erber, T.: 1966,Rev. Mod. Phys. 38, 626.Google Scholar
  12. Fabian, A. C., Icke, V., and Pringle, J. E.: 1976,Astrophys. Space Sci. 42, 77.Google Scholar
  13. Hameury, J. C., Heyvaerts, J., and Bonazzolla, S.: 1983,Astron. Astrophys. 121, 259.Google Scholar
  14. Hansen, C. J. and Van Horn, V. M.: 1975,Astrophys. J. 195, 735.Google Scholar
  15. Harwit, M. and Salpeter, E.: 1973,Astrophys. J. 186, L37.Google Scholar
  16. Katz, J. I.: 1982,Astrophys. J. 260, 371.Google Scholar
  17. Klepikov, N. P.: 1954,Zh. Eksper. Teor. Fiz. 26, 19.Google Scholar
  18. Mazets, E. P., Golenetskii, S. V., Aptekar, R. L., Guryan, Yu. A., and Ilyinskii, V. N.: 1981,Nature 290, 378.Google Scholar
  19. Mazets, E. P., Golenetskii, S. V., Ilyinskii, V. N., Guryan, Yu. A., Aptekar, R. L., Panov, V. N., Sokolov, I. A., Sokolova, A. Ya., and Kharitonova, T. V.: 1982,Astrophys. Space Sci. 82, 261.Google Scholar
  20. Newman, M. J. and Cox, A. N.: 1980,Astrophys. J. 242, 319.Google Scholar
  21. Rieger, E., Reppin, C., Kanbach, G., Forrest, D. J., Chupp, E. L., and Share, G. H.: 1982,Accreting Neutron Stars, MPE Report 177, Garching, p. 229.Google Scholar
  22. Shabad, A. E.: 1975,Ann. Phys. N.Y. 90, 166.Google Scholar
  23. Sokolov, A. A. and Ternov, I. M.: 1974,Relativistic Electron, Izd. Nauka, Moscow.Google Scholar
  24. Toll, J. S.: 1952, Ph.D. Thesis, Princeton Univ., (unpublished).Google Scholar
  25. Tsai, W.-Y. and Erber, T.: 1974,Phys. Rev. D10, 492.Google Scholar
  26. Woosley, S. E. and Wallace, R. K.: 1982,Astrophys. J. 258, 716.Google Scholar
  27. Wunner, G.: 1979,Phys. Rev. Letters 42, 79.Google Scholar
  28. Wunner, G., Herold, H., and Ruder, H.: 1983, in M. L. Burns, A. K. Harding, and R. Ramaty (eds.),Positron-Electron Pairs in Astrophysics, Goddard Space Flight Center, p. 411.Google Scholar
  29. Zheleznyakov, V. V.: 1982a,Astrophys. Space Sci. 83, 81.Google Scholar
  30. Zheleznyakov, V. V.: 1982b,Astrophys. Space Sci. 83, 117.Google Scholar

Copyright information

© D. Reidel Publishing Company 1985

Authors and Affiliations

  • V. V. Zheleznyakov
    • 1
  • A. A. Litvinchuk
    • 1
  1. 1.Institute of Applied PhysicsAcademy of Sciences of the USSRGorkyU.S.S.R.

Personalised recommendations