UC Spark

Dr Chris Gordon

Physics and Astronomy

Fields of Research

  • dark matter
  • galaxy clusters
  • non-gaussianity
  • primordial power spectrum
  • cosmic microwave background
  • inflation

Researcher Summary

My main areas of research are cosmology and astrophysics. Recently, I have become interested in the  problem of identifying the nature of dark matter. Although dark matter appears to be about four times as numerous as ordinary matter, it has not yet been detected non-gravitationally. Currently, I am investigating  the use of gamma-ray observations to constrain models of dark matter self-annhilation.

Subject Area: Disciplines

Key Methodologies

  • data analysis
  • mathematical modeling
  • numerical methods

Affiliations

Research Service

  • Member of XXL survey group. (2011-present)

Publications


  • Gordon, C. (2012) Evaluating the Gamma-ray Evidence for Self-Annihilating Dark Matter from the Virgo Cluster. Monterey, CA, USA: Fourth International Fermi Symposium, 28 Oct-2 Nov 2012. (Conference Contribution - Oral presentation)
  • Macías-Ramírez, O., Gordon, C., Brown, A.M. and Adams, J. (2012) Evaluating the Gamma-Ray Evidence for Self-Annihilating Dark Matter from the Virgo Cluster. Physical Review D: Particles, Fields, Gravitation, and Cosmology 86(7): 076004. http://dx.doi.org/10.1103/PhysRevD.86.076004. (Journal Article)
  • Gordon, C. (2012) The extreme tail of the non-Gaussian mass function. Queenstown, New Zealand: The Sixth Australasian Conference on General Relativity and Gravitation, 8-11 Feb 2012. (Conference Contribution - Oral presentation)
  • Paranjape, A., Gordon, C. and Hotchkiss, S. (2011) Extreme tail of the non-Gaussian mass function. Physical Review D: Particles, Fields, Gravitation, and Cosmology 84(2): 023517. http://dx.doi.org/10.1103/PhysRevD.84.023517. (Journal Article)
  • Chantavat, T., Gordon, C. and Silk, J. (2011) Large scale structure forecast constraints on particle production during inflation. Physical Review D 83(10): 103501. http://dx.doi.org/10.1103/PhysRevD.83.103501. (Journal Article)
  • Cayón, L., Gordon, C. and Silk, J. (2011) Probability of the most massive cluster under non-Gaussian initial conditions. Monthly Notices of the Royal Astronomical Society 415(1): 849-853. http://dx.doi.org/10.1111/j.1365-2966.2011.18770.x. (Journal Article)
  • Kuroyanagi, S., Gordon, C., Silk, J. and Sugiyama, N. (2010) Erratum: Forecast constraints on inflation from combined CMB and gravitational wave direct detection experiments [Phys. Rev. D 81, 083524 (2010)]. Physical Review D 82(6): 069901. http://dx.doi.org/10.1103/PhysRevD.82.069901. (Journal Article)
  • Kuroyanagi, S., Gordon, C., Silk, J. and Sugiyama, N. (2010) Forecast constraints on inflation from combined CMB and gravitational wave direct detection experiments. Physical Review D 81(8): 083524. http://dx.doi.org/10.1103/PhysRevD.81.083524. (Journal Article)
  • Gordon, C., Land, K. and Slosar, A. (2008) Determining the motion of the Solar system relative to the cosmic microwave background using Type Ia supernovae. Monthly Notices of the Royal Astronomical Society 387(1): 371-376. http://dx.doi.org/10.1111/j.1365-2966.2008.13239.x. (Journal Article)
  • Gordon, C. and Trotta, R. (2007) Bayesian calibrated significance levels applied to the spectral tilt and hemispherical asymmetry. Monthly Notices of the Royal Astronomical Society 382(4): 1859-1863. http://dx.doi.org/10.1111/j.1365-2966.2007.12707.x. (Journal Article)
  • Gordon, C. (2007) Broken Isotropy from a Linear Modulation of the Primordial Perturbations. The Astrophysical Journal 656(2): 636-640. http://dx.doi.org/10.1086/510511. (Journal Article)
  • Gordon, C. (2005) A Separate Universe Approach to Quintessence Perturbations. Nuclear Physics B Proceedings Supplements 148: 51-55. (Journal Article)
  • Gordon, C. and Wands, D. (2005) Amplitude of dark energy perturbations. Physical Review D 71(12): 123505. (Journal Article)
  • Gordon, C., Hu, W., Huterer, D. and Crawford, T. (2005) Spontaneous isotropy breaking: A mechanism for CMB multipole alignments. Physical Review D 72(10): 103002. (Journal Article)
  • Gordon, C. and Hu, W. (2004) Low CMB quadrupole from dark energy isocurvature perturbations. Physical Review D 70(8): 083003. (Journal Article)
  • Gordon, C. and Malik, K. A. (2004) WMAP, neutrino degeneracy, and non-Gaussianity constraints on isocurvature perturbations in the curvaton model of inflation. Physical Review D 69(6): 063508. (Journal Article)
  • Gordon, C. and Turok, N. (2003) Cosmological perturbations through a general relativistic bounce. Physical Review D 67(12): 123508. (Journal Article)
  • Gumjudpai, B., Maartens, R. and Gordon, C. (2003) Density perturbations in a braneworld universe with dark radiation. Classical and Quantum Gravity 20: 3295-3306. (Journal Article)
  • Gordon, C. and Lewis, A. (2003) Observational constraints on the curvaton model of inflation. Physical Review D 67(12): 123513. (Journal Article)
  • Amendola, L., Gordon, C., Wands, D. and Sasaki, M. (2002) Correlated Perturbations from Inflation and the Cosmic Microwave Background. Physical Review Letters 88(21): 211302. (Journal Article)
  • Gordon, C., Wands, D., Bassett, B. A. and Maartens, R. (2001) Adiabatic and entropy perturbations from inflation. Physical Review D 63(2): 023506. (Journal Article)
  • Gordon, C. (2001) Adiabatic and entropy perturbations in cosmology. PhD, University of Portsmouth, Great Britain. (Thesis - Doctor of Philosophy)
  • Gordon, C. and Maartens, R. (2001) Density perturbations in the brane-world. Physical Review D 63(4): 044022. (Journal Article)
  • Gordon, C. (2001) Entropy and adiabatic components in scalar field perturbations. USA: 20th Texas Symposium on relativistic astrophysics, 2001. In 20th Texas Symposium on relativistic astrophysics 586 68-70. (Conference Contribution - Paper in published proceedings)
  • Berera, A. and Gordon, C. (2001) Inflationary initial conditions consistent with causality. Physical Review D 63(6): 063505. (Journal Article)
  • Gordon, C. (2000) A generalization of the maximum noise fraction transform. IEEE Transactions on Geoscience and Remote Sensing 38: 608-610. (Journal Article)
  • Bassett, B.A., Gordon, C., Maartens, R. and Kaiser, D.I. (2000) Restoring the sting to metric preheating. Physical Review D 61(6): 061302. (Journal Article)
  • Gordon, C. (1999) Artificial Neural Network Modeling of Forest Tree Growth. MSc, University of the Witwatersrand, South Africa. (Thesis - Master of Science)