CONFORMAL COSMOLOGICAL MODEL PARAMETERS WITH DISTANT SNe Ia DATA: "GOLD" AND "SILVER"

被引:15
作者
Zakharov, Alexander F. [1 ,2 ,3 ]
Pervushin, Victor N. [3 ]
机构
[1] Chinese Acad Sci, Natl Astron Observ, Beijing 100012, Peoples R China
[2] Inst Theoret & Expt Phys, Moscow 117259, Russia
[3] Joint Inst Nucl Res, Bogoliubov Lab Theoret Phys, Dubna 141980, Russia
来源
INTERNATIONAL JOURNAL OF MODERN PHYSICS D | 2010年 / 19卷 / 12期
基金
中国国家自然科学基金;
关键词
General relativity; gravitation; cosmology; observational cosmology; cosmological tests; supernovae; HUBBLE-SPACE-TELESCOPE; DARK ENERGY; ACCELERATING UNIVERSE; GENERAL-RELATIVITY; SUPERNOVA DATA; CONSTRAINTS; DISCOVERIES; FORMALISM; GRAVITY;
D O I
10.1142/S0218271810018013
中图分类号
P1 [天文学];
学科分类号
0704 ;
摘要
We assume that Type Ia supernovae (SNe Ia) are standard candles which one could use to test cosmological theories. The Hubble Space Telescope team analyzed 186 SNe Ia1 to test the standard cosmological model (SC) associated with expanded lengths in the universe and evaluate its parameters. We use the same sample to determine parameters of the conformal cosmological model (CC) with relative reference units of intervals, so that conformal quantities of general relativity are interpreted as observables. We concluded, that the test is extremely useful and allows the evaluation of the parameters of the model. From a formal statistical point of view the best-fit of the CC model is almost the same quality approximation as the best-fit of the SC model with Omega(A) = 0.72, Omega(m) = 0.28. As it was noted earlier, for CC models, a rigid matter component could substitute the.-term (or quintessence) existing in the SC model. We note that a free massless scalar field can generate such a rigid matter. We describe the results of our analysis for more recent "gold" data (for 192 SNe Ia).
引用
收藏
页码:1875 / 1887
页数:13
相关论文
共 55 条
  • [1] Conformal Hamiltonian dynamics of general relativity
    Arbuzov, A. B.
    Barbashov, B. M.
    Nazmitdinov, R. G.
    Pervushin, V. N.
    Borowiec, A.
    Pichugin, K. N.
    Zakharov, A. F.
    [J]. PHYSICS LETTERS B, 2010, 691 (05) : 230 - 233
  • [2] A supernova brane scan
    Avelino, PP
    Martins, CJAP
    [J]. ASTROPHYSICAL JOURNAL, 2002, 565 (02) : 661 - 667
  • [3] A lightweight universe?
    Bahcall, NA
    Fan, XH
    [J]. PROCEEDINGS OF THE NATIONAL ACADEMY OF SCIENCES OF THE UNITED STATES OF AMERICA, 1998, 95 (11) : 5956 - 5959
  • [4] The most massive distant clusters:: Determining Ω and σ8
    Bahcall, NA
    Fan, XH
    [J]. ASTROPHYSICAL JOURNAL, 1998, 504 (01) : 1 - 6
  • [5] Hamiltonian general relativity in finite space and cosmological potential perturbations
    Barbashov, B. M.
    Pervushin, V. N.
    Zakharov, A. F.
    Zinchuk, V. A.
    [J]. INTERNATIONAL JOURNAL OF MODERN PHYSICS A, 2006, 21 (28-29): : 5957 - 5990
  • [6] The hamiltonian approach to general relativity and CMB primordial spectrum
    Barbashov, B. M.
    Pervushin, V. N.
    Zakharov, A. F.
    Zinchuk, V. A.
    [J]. INTERNATIONAL JOURNAL OF GEOMETRIC METHODS IN MODERN PHYSICS, 2007, 4 (01) : 171 - 181
  • [7] CMBR anisotropy: Theoretical approaches
    Barbashov, B. M.
    Pervushin, V. N.
    Zakharov, A. F.
    Zinchuk, V. A.
    [J]. PHYSICS OF ATOMIC NUCLEI, 2007, 70 (01) : 191 - 197
  • [8] Hamiltonian approach to cosmological perturbations in general relativity
    Barbashov, B. M.
    Pervushin, V. N.
    Zakharov, A. F.
    Zinchuk, Va.
    [J]. NUCLEAR SCIENCE AND SAFETY IN EUROPE, 2006, : 125 - +
  • [9] Barbashov BM, 2006, AIP CONF PROC, V841, P362, DOI 10.1063/1.2218193
  • [10] Barbashov B. M., 2006, P 8 INT WORKSH REL N, P11