Skip to main content
SpringerLink
Log in

The physical parameters of several extragalactic radio sources displaying rapid variability

  • Published:
Astronomy Reports Aims and scope Submit manuscript

Abstract

We present the results of a study of the sources PKS 0405-385, B0917+624, PKS 1257-326, and J1819+3845, which display variability on time scales from 1–7 h (at 5 GHz). Estimates of the physical parameters (magnetic-field intensity, density of relativistic particles, energies of the magnetic field and relativistic particles) are given for B0917+624 and J1819+3845. It is shown that these sources are not in a state of energy equipartition. A number of indirect arguments indicate that the shortest flares in sources with long-time-scale variability have the same parameters as flares in the studied sources.

This is a preview of subscription content, log in via an institution to check access.

Access this article

Log in via an institution

Price excludes VAT (USA)
Tax calculation will be finalised during checkout.

Instant access to the full article PDF.

Institutional subscriptions

Similar content being viewed by others

References

  1. S. J. Wagner and A. Witzel, Annu. Rev. Astron. Astrophys. 33, 163 (1995).

    ADS  Google Scholar 

  2. D. L. Jauncey and J.-P. Maquart, Astron. Astrophys. 370, L9 (2001).

    Article  ADS  Google Scholar 

  3. V. I. Shishov, T. V. Smirnova, and S. A. Tyul’bashev, Astron. Zh. 82, 281 (2005) [Astron. Rep. 49, 250 (2005)].

    Google Scholar 

  4. V. S. Artyukh, S. A. Tyul’bashev, and P. A. Chernikov, Astron. Zh. 76, 3 (1999) [Astron. Rep. 43, 1 (1999)].

    Google Scholar 

  5. S. A. Tyul’bashev and P. A. Chernikov, Astron. Zh. 77, 331 (2000) [Astron. Rep. 44, 286 (2000)].

    Google Scholar 

  6. S. A. Tyul’bashev and P. A. Chernikov, Astron. Astrophys. 373, 381 (2001).

    ADS  Google Scholar 

  7. S. A. Tyul’bashev, Astron. Zh. 78, 498 (2001) [Astron. Rep. 45, 428 (2001)].

    Google Scholar 

  8. V. S. Artyukh, M. A. Ogannisyan, and S. A. Tyul’bashev, Pis’ma Astron. Zh. 20, 258 (1994) [Astron. Lett. 20, 211 (1994)].

    ADS  Google Scholar 

  9. V. S. Artyukh, Proc. Lebedev Phys. Inst. 189, 289 (1988); http://lnfm1.sai.msu.ru/∼patch/css/.

    Google Scholar 

  10. V. I. Slish, Nature 199, 682 (1963).

    ADS  Google Scholar 

  11. A. P. Marscher, Astrophys. J. 264, 296 (1983).

    Article  ADS  Google Scholar 

  12. R. D. Blandford and A. Königl, Astrophys. J. 232, 34 (1979).

    Article  ADS  Google Scholar 

  13. D. R. Altschuler, Fundam. Cosm. Phys. 14, 37 (1989).

    ADS  Google Scholar 

  14. B. A. Peterson and J. G. Bolton, Astrophys. Lett. 10, 105 (1972).

    ADS  Google Scholar 

  15. L. Kedziora-Chudczer, D. L. Jauncey, M. H. Wieringa, et al., Astrophys. J. 490, L9 (1997).

    Article  ADS  Google Scholar 

  16. M. Stickel and H. Kühr, Astron. Astrophys., Suppl. Ser. 101, 521 (1993).

    ADS  Google Scholar 

  17. A. Quirrenbach, A. Kraus, A. Witzel, et al., Astron. Astrophys., Suppl. Ser. 141, 221 (2000).

    Article  ADS  Google Scholar 

  18. K. R. Lang, Astrophysical Formulae: A Compendium for the Physicist and Astrophysicist (Springer-Verlag, Berlin, 1974; Mir, Moscow, 1978).

    Google Scholar 

  19. E. Perlman, P. Padovani, P. Giommi, et al., Astron. J. 115, 1253 (1998).

    Article  ADS  Google Scholar 

  20. J. Dennett-Thorpe and A. G. de Bruyn, Astrophys. J. 529, L65 (2000).

    Article  ADS  Google Scholar 

  21. V. S. Artyukh, M. A. Ogannisyan, and S. A. Tyul’bashev, Pis’ma Astron. Zh. 14, 706 (1988) [Sov. Astron. Lett. 14, 301 (1988)].

    ADS  Google Scholar 

  22. V. S. Artyukh, S. A. Tyul’bashev, and P. A. Chernikov, Astron. Zh. (2005) (in press).

  23. E. Valtaoja and H. Teräsranta, Astron. Astrophys. 289, 35 (1994).

    ADS  Google Scholar 

  24. P. A. Hughes, H. D. Aller, and M. F. Aller, Astrophys. J. 396, 469 (1992).

    Article  ADS  Google Scholar 

  25. M. Bondi, L. Padrielli, R. Fanti, et al., Astron. Astrophys. 308, 415 (1996).

    ADS  Google Scholar 

  26. H. Teräsranta and E. Valtaoja, Astron. Astrophys. 283, 51 (1994).

    ADS  Google Scholar 

Download references

Author information

Authors and Affiliations

  1. Pushchino Radio Astronomy Observatory, Astro Space Center, Lebedev Institute of Physics, Russian Academy of Sciences, Pushchino, Moscow oblast, 142290, Russia

    S. A. Tyul’bashev

Authors
  1. S. A. Tyul’bashev
    View author publications

    You can also search for this author in PubMed Google Scholar

Additional information

__________

Translated from Astronomicheski\(\overset{\lower0.5em\hbox{$\smash{\scriptscriptstyle\smile}$}}{l}\) Zhurnal, Vol. 82, No. 12, 2005, pp. 1081–1086.

Original Russian Text Copyright © 2005 by Tyul’bashev.

Rights and permissions

Reprints and permissions

About this article

Cite this article

Tyul’bashev, S.A. The physical parameters of several extragalactic radio sources displaying rapid variability. Astron. Rep. 49, 967–972 (2005). https://doi.org/10.1134/1.2139812

Download citation

  • Received:

  • Accepted:

  • Issue Date:

  • DOI: https://doi.org/10.1134/1.2139812

Keywords

Search

Navigation