Abstract

Recent observations have shown that some compact stellar binaries radiate the highest energy light in the universe. The challenge has been to determine the nature of the compact object and whether the very high energy gamma-rays are ultimately powered by pulsar winds or relativistic jets. Multiwavelength observations have shown that one of the three gamma-ray binaries known so far, PSR B1259−63, is a neutron star binary and that the very energetic gamma-rays from this source and from another gamma-ray binary, LS I +61 303, may be produced by the interaction of pulsar winds with the wind from the companion star. At this time it is an open question whether the third gamma-ray binary, LS 5039, is also powered by a pulsar wind or a microquasar jet, where relativistic particles in collimated jets would boost the energy of the wind from the stellar companion to TeV energies.

Keywords

X-ray binaries Microquasars X-rays Gamma-rays 

Preview

Unable to display preview. Download preview PDF.

Unable to display preview. Download preview PDF.

References

  1. [Aharonian et al., 2005a]
    Aharonian, F., Akhperjanian, A.G., Aye, K.M., et al.: Discovery of very high energy gamma rays associated with an X-ray binary. Science 309, 746–749 (2005a) ADSCrossRefGoogle Scholar
  2. [Aharonian et al., 2005b]
    Aharonian, F., Akhperjanian, A.G., Aye, K.M., et al.: Discovery of the binary pulsar PSR B1259-63 in very-high-energy gamma rays around periastron with HESS. Astron. Astrophys. 442, 1–10 (2005b) ADSCrossRefGoogle Scholar
  3. [Albert et al., 2006]
    Albert, J., Aliu, E., Anderhub, H., et al.: Variable very-high-energy gamma-ray emission from the microquasar LS I +61 303. Science 312, 1771–1773 (2006) ADSCrossRefGoogle Scholar
  4. [Atoyan and Aharonian, 1999]
    Atoyan, A.M., Aharonian, F.: Modelling of the non-thermal flares in the Galactic microquasar GRS 1915+105. Mon. Not. Roy. Astron. Soc. 302, 253–276 (1999) ADSCrossRefGoogle Scholar
  5. [Bosch-Ramon et al., 2006]
    Bosch-Ramon, V., Romero, G.E., Paredes, J.M.: A broadband leptonic model for gamma-ray emitting microquasars. Astron. Astrophys. 447, 263–276 (2006) ADSCrossRefGoogle Scholar
  6. [Corbel et al., 2002]
    Corbel, S., Fender, R.P., Tzioumis, A.K., et al.: Large-scale, decelerating, relativistic X-ray jets from the microquasar XTE J1550-564. Science 298, 196–199 (2002) ADSCrossRefGoogle Scholar
  7. [Dhawan et al., 2006]
    Dhawan, V., Mioduszewski, A., Rupen, M.: LS I +61 303 is a gamma-ray pulsar, not a microquasar. In: Belloni, T. (ed.) VI Microquasar Workshop—Microquasars and Beyond: from Binaries to Galaxies, Como, Italy, 18–22 September 2006, in press. Proceedings of Science (2006) Google Scholar
  8. [Dubus, 2006]
    Dubus, G.: Gamma-ray binaries: pulsars in disguise? Astron. Astrophys. 456, 801–817 (2006) ADSCrossRefGoogle Scholar
  9. [Gallo et al., 2005]
    Gallo, E., Fender, R.P., Kaiser, C., Russell, D., Morganti, R., Oosterloo, R., Heinz, S.: A dark jet dominates the power output of the stellar black hole Cygnus X-1. Nature 436, 819–821 (2005) ADSCrossRefGoogle Scholar
  10. [Kniffen et al., 1997]
    Kniffen, D.A., Alberts, W.C.K., Bertsch, D.L., et al.: EGRET observations of the gamma-ray source 2CG 135+01. Astrophys. J. 486, 126–131 (1997) ADSCrossRefGoogle Scholar
  11. [Maraschi and Treves, 1981]
    Maraschi, L., Treves, A.: A model for LS I +61 303. Mon. Not. Roy. Astron. Soc. 194, 1P–5P (1981) ADSGoogle Scholar
  12. [Mirabel, 2006]
    Mirabel, I.F.: Very energetic γ-rays from microquasars and binary pulsars. Science 312, 1759–1760 (2006) ADSCrossRefGoogle Scholar
  13. [Mirabel and Rodríguez, 1998]
    Mirabel, I.F., Rodríguez, L.F.: Microquasars in our Galaxy. Nature 392, 673–676 (1998) ADSCrossRefGoogle Scholar
  14. [Mirabel and Rodríguez, 1999]
    Mirabel, I.F., Rodríguez, L.F.: Sources of relativistic jets in the Galaxy. Annu. Rev. Astron. Astrophys. 37, 409–443 (1999) ADSCrossRefGoogle Scholar
  15. [Paredes et al., 2000]
    Paredes, J.M., Martí, J., Ribó, M., Massi, M.: Discovery of a high-energy gamma-ray-emitting persistent microquasar. Science 288, 2340–2342 (2000) ADSCrossRefGoogle Scholar
  16. [Ribó et al., 2002]
    Ribó, M., Paredes, J.M., Romero, G.E., et al.: LS 5039: A runaway microquasar ejected from the galactic plane. Astron. Astrophys. 384, 954–964 (2002) ADSCrossRefGoogle Scholar
  17. [Romero et al., 2005]
    Romero, G.E., Christiansen, H.R., Orellana, M.: Hadronic high-energy gamma-ray emission from the microquasar LS I +61 303. Astrophys. J. 632, 1093–1098 (2005) ADSCrossRefGoogle Scholar

Copyright information

© Springer 2007

Authors and Affiliations

  1. 1.European Southern ObservatorySantiagoChile

Personalised recommendations