Cosmology and VHE gamma ray astrophysics: connections and perspectives

Conference paper

Abstract

The observation of the universe in the VHE gamma ray domain with the new generation of Cherenkov Telescopes is producing new measurements with a direct implication for cosmology. The present results and the future prospects will be discussed.

Keywords

VHE gamma ray astrophysics Cherenkov telescopes Observational cosmology 

PACS

98.70.Rz 95.35.+d 98.80.Es 98.80.Qc 
This is a preview of subscription content, log in to check access.

Preview

Unable to display preview. Download preview PDF.

Unable to display preview. Download preview PDF.

References

  1. [Aharonian et al., 2004]
    Aharonian, F., et al., HESS Collab.: Very high energy gamma rays from the direction of Sagittarius A*. Astron. Astrophys. 425, L13–L17 (2004) ADSCrossRefGoogle Scholar
  2. [Aharonian et al., 2006a]
    Aharonian, F., et al., HESS Collab.: A low level of extragalactic background light as revealed by γ-rays from blazars. Nature 440, 1018–1021 (2006a), and references therein ADSCrossRefGoogle Scholar
  3. [Aharonian et al., 2006b]
    Aharonian, F., et al., HESS. Collab.: Discovery of very-high-energy gamma-rays from the Galactic Center Ridge. Nature 439, 695–698 (2006b), and references therein ADSCrossRefGoogle Scholar
  4. [Aharonian et al., 2006c]
    Aharonian, F., et al., HESS Collab.: H.E.S.S. observations of the Galactic Center region and their possible dark matter interpretation. Phys. Rev. Let. 97, 221102 (2006c) ADSCrossRefGoogle Scholar
  5. [Amelino-Camelia et al., 2005]
    Amelino-Camelia, G., Lammerzahl, C., Macias, A., Muller, M.: The search for quantum gravity signals. AIP Conf. Proc. 758, 30–80 (2005), and references therein ADSCrossRefGoogle Scholar
  6. [Bertone, 2007]
    Bertone G.: Dark matter: the connection with gamma-ray astrophysics. Astrophys. Space Sci. doi:  10.1007/s10509-007-9399-6 (2007)
  7. [Bertone et al., 2005]
    Bertone, G., Hooper, D., Silk, J.: Particle dark matter: Evidence, candidates and constraints. Phys. Rept. 405, 279 (2005) ADSCrossRefGoogle Scholar
  8. [Biller et al., 1999]
    Biller, S.D., et al.: Limits to quantum gravity effects from observations of TeV flares in active galaxies. Phys. Rev. Lett. 83, 2108–2111 (1999) ADSCrossRefGoogle Scholar
  9. [Blanch and Martinez, 2005a]
    Blanch, O., Martinez, M.: Exploring the Gamma Ray Horizon with the next generation of Gamma Ray Telescopes. Part 1: Theoretical predictions. Astropart. Phys. 23, 588–597 (2005a), and references therein ADSCrossRefGoogle Scholar
  10. [Blanch and Martinez, 2005b]
    Blanch, O., Martinez, M.: Exploring the Gamma Ray Horizon with the next generation of Gamma Ray Telescopes. Part 2: Extracting cosmological parameters from the observation of gamma-ray sources. Astropart. Phys. 23, 598–607 (2005b) ADSCrossRefGoogle Scholar
  11. [Blanch and Martinez, 2005c]
    Blanch, O., Martinez, M.: Exploring the Gamma Ray Horizon with the next generation of Gamma Ray Telescopes. Part 3: Optimizing the observation schedule of gamma rays sources for the extraction of cosmological parameters. Astropart. Phys. 23, 608–615 (2005c) ADSCrossRefGoogle Scholar
  12. [Blanch et al., 2003]
    Blanch O., Lopez, J., Martinez, M.: Testing the effective scale of quantum gravity with the next generation of gamma ray telescopes. Astropart. Phys. 19, 245–252 (2003) ADSCrossRefGoogle Scholar
  13. [Costamante, 2007]
    Costamante, L.: A low density of the Extragalactic Background Light revealed by the H.E.S.S. spectra of the BL Lac objects 1ES 1101-232 and H 2356-309. Astrophys. Space Sci. doi:  10.1007/s10509-007-9418-7 (2007)
  14. [Horns, 2005]
    Horns, D.: TeV gamma-radiation from dark matter annihilation in the galactic center. Phys. Lett. B607, 225 (2005) ADSCrossRefGoogle Scholar
  15. [Martinez, 2006]
    Martinez, M.: VHE gamma ray astronomy: observations. Proceedings of the TAUP 2005, Ninth Int. Conf. on Topics in Astroparticle and Underground Physics. J. Phys. Conf. Ser. 39, 400–407 (2006) ADSCrossRefGoogle Scholar
  16. [Mazin, 2007]
    Mazin, D., Observations of extragalactic sources with the magic telescope. Astrophys. Space Sci. doi:  10.1007/s10509-007-9440-9 (2007)
  17. [Ong, 2005]
    Ong, R.: Proceedings of the 29th International Cosmic Ray Conference, Pune (India), 3–11 Aug 2005—ICRC 2005. Quest Publications, Mumbai. Hoffman, W. for the HESS collaboration, the same Proceedings. Mirzoyan, R. for the MAGIC collaboration, the same Proceedings. Nishijima, K. for the CANGAROO-III collaboration, the same Proceedings. Holder, J. for the VERITAS collaboration 2005, the same Proceedings Google Scholar
  18. [Plaga, 1995]
    Plaga, R.: Detecting intergalactic magnetic fields using time delays in pulses of gamma-rays. Nature 374, 430–432 (1995) ADSCrossRefGoogle Scholar
  19. [Prada et al., 2004]
    Prada, F., et al.: Dark Matter annihilation in the Milky Way Galaxy: Effects of baryonic compression. Phys. Rev. Lett. 93, 241–301 (2004) CrossRefGoogle Scholar
  20. [The CACTUS Collaboration oral presentation, 2005]
    The CACTUS Collaboration: Oral presentation at the TAUP 2005, Zaragoza (Spain), September 2005 Google Scholar
  21. [The MAGIC Collaboration, 2006]
    The MAGIC Collaboration: Private communication (2006) Google Scholar

Copyright information

© Springer 2007

Authors and Affiliations

  1. 1.IFAE, Edifici CnUniversitat Autònoma de BarcelonaBellaterra (Barcelona)Spain

Personalised recommendations