GENERALIZED MODEL FOR Λ DARK ENERGY

被引：8
作者：
Mukhopadhyay, Utpal [1 ]
Ray, P. C. [2 ]
Ray, Saibal [3 ]
Choudhury, S. B. Dutta [4 ]
机构：
[1] Satyabharati Vidyapith, Kolkata 700126, W Bengal, India
[2] Govt Coll Engn & Leather Technol, Dept Math, Kolkata 700098, W Bengal, India
[3] Barasat Govt Coll, Dept Phys, Kolkata 700124, W Bengal, India
[4] Jadavpur Univ, Dept Phys, Kolkata 700032, W Bengal, India
来源：
INTERNATIONAL JOURNAL OF MODERN PHYSICS D | 2009年 / 18卷 / 03期
关键词：
Dark energy; Lambda model; curvature constant; HIGH-REDSHIFT SUPERNOVAE; PROBE WMAP OBSERVATIONS; HUBBLE-SPACE-TELESCOPE; ACCELERATING UNIVERSE; COSMOLOGICAL CONSTANT; Z-GREATER-THAN-1; DECELERATION; CONSTRAINTS;
D O I：
10.1142/S021827180901456X
中图分类号：
P1 [天文学];
学科分类号：
0704 ;
摘要：
Einstein field equations under spherically symmetric space-times are considered here in connection with dark energy investigation. A set of solutions is obtained for a kinematic. model, viz. Lambda ((a) over dot/a)(2), without assuming any a priori value for the curvature constant and the equation-of-state parameter omega. Some interesting results, such as the nature of cosmic density Omega and deceleration parameter q, have been obtained with the consideration of two-fluid structure instead of the usual unifluid cosmological model.
引用
收藏
页码：389 / 396
页数：8
相关论文
共 22 条
  • [11] Measurements of Ω and Λ from 42 high-redshift supernovae
    Perlmutter, S
    Aldering, G
    Goldhaber, G
    Knop, RA
    Nugent, P
    Castro, PG
    Deustua, S
    Fabbro, S
    Goobar, A
    Groom, DE
    Hook, IM
    Kim, AG
    Kim, MY
    Lee, JC
    Nunes, NJ
    Pain, R
    Pennypacker, CR
    Quimby, R
    Lidman, C
    Ellis, RS
    Irwin, M
    McMahon, RG
    Ruiz-Lapuente, P
    Walton, N
    Schaefer, B
    Boyle, BJ
    Filippenko, AV
    Matheson, T
    Fruchter, AS
    Panagia, N
    Newberg, HJM
    Couch, WJ
    [J]. ASTROPHYSICAL JOURNAL, 1999, 517 (02) : 565 - 586
  • [12] Ray Saibal, 2007, Gravitation & Cosmology, V13, P142
  • [13] The farthest known supernova:: Support for an accelerating universe and a glimpse of the epoch of deceleration
    Riess, AG
    Nugent, PE
    Gilliland, RL
    Schmidt, BP
    Tonry, J
    Dickinson, M
    Thompson, RI
    Budavári, T
    Casertano, S
    Evans, AS
    Filippenko, AV
    Livio, M
    Sanders, DB
    Shapley, AE
    Spinrad, H
    Steidel, CC
    Stern, D
    Surace, J
    Veilleux, S
    [J]. ASTROPHYSICAL JOURNAL, 2001, 560 (01) : 49 - 71
  • [14] Type Ia supernova discoveries at z > 1 from the Hubble Space Telescope:: Evidence for past deceleration and constraints on dark energy evolution
    Riess, AG
    Strolger, LG
    Tonry, J
    Casertano, S
    Ferguson, HC
    Mobasher, B
    Challis, P
    Filippenko, AV
    Jha, S
    Li, WD
    Chornock, R
    Kirshner, RP
    Leibundgut, B
    Dickinson, M
    Livio, M
    Giavalisco, M
    Steidel, CC
    Benítez, T
    Tsvetanov, Z
    [J]. ASTROPHYSICAL JOURNAL, 2004, 607 (02) : 665 - 687
  • [15] Observational evidence from supernovae for an accelerating universe and a cosmological constant
    Riess, AG
    Filippenko, AV
    Challis, P
    Clocchiatti, A
    Diercks, A
    Garnavich, PM
    Gilliland, RL
    Hogan, CJ
    Jha, S
    Kirshner, RP
    Leibundgut, B
    Phillips, MM
    Reiss, D
    Schmidt, BP
    Schommer, RA
    Smith, RC
    Spyromilio, J
    Stubbs, C
    Suntzeff, NB
    Tonry, J
    [J]. ASTRONOMICAL JOURNAL, 1998, 116 (03) : 1009 - 1038
  • [16] The case for a positive cosmological Λ-term
    Sahni, V
    Starobinsky, A
    [J]. INTERNATIONAL JOURNAL OF MODERN PHYSICS D, 2000, 9 (04): : 373 - 443
  • [17] Running G and L at low energies from physics at MX:: possible cosmological and astrophysical implications -: art. no. 012
    Shapiro, IL
    Solà, J
    Stefancic, H
    [J]. JOURNAL OF COSMOLOGY AND ASTROPARTICLE PHYSICS, 2005, (01): : 181 - 212
  • [18] Three-year Wilkinson Microwave Anisotropy Probe (WMAP) observations:: Implications for cosmology
    Spergel, D. N.
    Bean, R.
    Dore, O.
    Nolta, M. R.
    Bennett, C. L.
    Dunkley, J.
    Hinshaw, G.
    Jarosik, N.
    Komatsu, E.
    Page, L.
    Peiris, H. V.
    Verde, L.
    Halpern, M.
    Hill, R. S.
    Kogut, A.
    Limon, M.
    Meyer, S. S.
    Odegard, N.
    Tucker, G. S.
    Weiland, J. L.
    Wollack, E.
    Wright, E. L.
    [J]. ASTROPHYSICAL JOURNAL SUPPLEMENT SERIES, 2007, 170 (02) : 377 - 408
  • [19] First-year Wilkinson Microwave Anisotropy Probe (WMAP) observations:: Determination of cosmological parameters
    Spergel, DN
    Verde, L
    Peiris, HV
    Komatsu, E
    Nolta, MR
    Bennett, CL
    Halpern, M
    Hinshaw, G
    Jarosik, N
    Kogut, A
    Limon, M
    Meyer, SS
    Page, L
    Tucker, GS
    Weiland, JL
    Wollack, E
    Wright, EL
    [J]. ASTROPHYSICAL JOURNAL SUPPLEMENT SERIES, 2003, 148 (01) : 175 - 194
  • [20] Phantom appearance of non-phantom matter
    Stefancic, H
    [J]. EUROPEAN PHYSICAL JOURNAL C, 2004, 36 (04): : 523 - 527
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