New constraints on the variable equation of state parameter from x-ray gas mass fractions and Sne Ia

被引：24
|
作者：
Cunha, J. V. [1 ]
Marassi, L. [1 ]
Santos, R. C. [1 ]
机构：
[1] Univ Fed Rio Grande do Norte, Dept Fis, BR-59072970 Natal, RN, Brazil
来源：
INTERNATIONAL JOURNAL OF MODERN PHYSICS D | 2007年 / 16卷 / 2-3期
关键词：
cosmology; dark energy; equation of state; X-ray; supernovae;
D O I：
10.1142/S0218271807010183
中图分类号：
P1 [天文学];
学科分类号：
0704 ;
摘要：
Recent measurements are suggesting that we live in a flat Universe and that its present accelerating stage is driven by a dark energy component whose equation of state may evolve in time. Assuming two different parametrizations for the function omega(z), we constrain their free parameters from a joint analysis involving measurements from X-ray luminosity of galaxy clusters and SNe type Ia data.
引用
收藏
页码：403 / 409
页数：7
相关论文
共 50 条
  • [1] Variable Chaplygin gas: Constraints from CMBR and SNe Ia
    Sethi, Geetanjali
    Singh, Sushil K.
    Kumar, Pranav
    Jain, Deepak
    Dev, Abha
    INTERNATIONAL JOURNAL OF MODERN PHYSICS D, 2006, 15 (07): : 1089 - 1098
  • [2] New Constraints on the Nuclear Equation of State from the Thermal Emission of Neutron Stars in Quiescent Low-mass X-Ray Binaries
    d'Etivaux, Nicolas Baillot
    Guillot, Sebastien
    Margueron, Jerome
    Webb, Natalie
    Catelan, Marcio
    Reisenegger, Andreas
    ASTROPHYSICAL JOURNAL, 2019, 887 (01):
  • [3] The X-ray/radio and UV luminosity expected from symbiotic systems as the progenitor of SNe Ia
    Meng, Xiangcun
    Han, Zhanwen
    ASTRONOMY & ASTROPHYSICS, 2016, 588
  • [4] Constraints on holographic dark energy from X-ray gas mass fraction of galaxy clusters
    Chang, Z
    Wu, FQ
    Zhang, X
    PHYSICS LETTERS B, 2006, 633 (01) : 14 - 18
  • [5] Reconstructing the equation of state and density parameter for dark energy from combined analysis of recent SNe Ia, OHD and BAO data
    Majumdar, Debasish
    Bandyopadhyay, Abhijit
    Adak, Debabrata
    12TH INTERNATIONAL CONFERENCE ON TOPICS IN ASTROPARTICLE AND UNDERGROUND PHYSICS (TAUP 2011), PTS 1-6, 2012, 375
  • [6] The intracluster gas fraction in X-ray clusters: constraints on the clustered mass density
    Evrard, AE
    MONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETY, 1997, 292 (02) : 289 - 297
  • [7] Cosmological constraints from X-ray AGN clustering and type Ia supernova data
    Basilakos, S
    Plionis, M
    MONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETY, 2005, 360 (01) : L35 - L38
  • [8] Constraints on type Ia supernova models from X-ray spectra of galaxy clusters
    Dupke, RA
    White, RE
    ASTROPHYSICAL JOURNAL, 2000, 528 (01): : 139 - 144
  • [9] Complementary constraints from Fanaroff-Riley type IIb radio galaxies and X-ray gas mass fractions in clusters on nonstandard cosmological models
    Puetzfeld, D
    Pohl, M
    Zhu, ZH
    ASTROPHYSICAL JOURNAL, 2005, 619 (02): : 657 - 666
  • [10] Cosmological constraints from the X-ray gas mass fraction in relaxed lensing clusters observed with Chandra
    Allen, SW
    Schmidt, RW
    Fabian, AC
    MONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETY, 2002, 334 (02) : L11 - L15
12345