No Access

NEW CONSTRAINTS ON THE VARIABLE EQUATION OF STATE PARAMETER FROM X-RAY GAS MASS FRACTIONS AND SNe Ia

J. V. CUNHA

Departamento de Física, Universidade Federal do Rio Grande do Norte, CEP 59072-970, Natal, Rio Grande do Norte, Brazil

Search for more papers by this author

L. MARASSI

Departamento de Física, Universidade Federal do Rio Grande do Norte, CEP 59072-970, Natal, Rio Grande do Norte, Brazil

Search for more papers by this author

, and

R. C. SANTOS

Departamento de Física, Universidade Federal do Rio Grande do Norte, CEP 59072-970, Natal, Rio Grande do Norte, Brazil

Search for more papers by this author

https://doi.org/10.1142/S0218271807010183Cited by:21 (Source: Crossref)

Abstract

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 ω(z), we constrain their free parameters from a joint analysis involving measurements from X-ray luminosity of galaxy clusters and SNe type Ia data.

Keywords:

You currently do not have access to the full text article.
Recommend the journal to your library today!

References

T. Padmanabhan, Phys. Rep. 380, 235 (2003), DOI: 10.1016/S0370-1573(03)00120-0. Web of Science, ADS, Google Scholar
P. J. E. Peebles and B. Ratra, Rev. Mod. Phys. 75, 559 (2003), DOI: 10.1103/RevModPhys.75.559. Web of Science, ADS, Google Scholar
J. A. S. Lima, Braz. J. Phys. 34, 194 (2004). Web of Science, ADS, Google Scholar
A. G. Riesset al., Astrophys. J. 607, 665 (2004), DOI: 10.1086/383612. Web of Science, ADS, Google Scholar
P. de Bernardiset al., Nature 404, 955 (2000), DOI: 10.1038/35010035. Web of Science, ADS, Google Scholar
L. Knox and L. Page, Phys. Rev. Lett. 85, 1366 (2000), DOI: 10.1103/PhysRevLett.85.1366. Web of Science, ADS, Google Scholar
A. H. Jaffeet al., Phys. Rev. Lett. 86, 3475 (2001), DOI: 10.1103/PhysRevLett.86.3475. Web of Science, ADS, Google Scholar
C. L. Bennettet al., Astrophys. J. Suppl. 148, 1 (2003), DOI: 10.1086/377253. Web of Science, ADS, Google Scholar
R. G. Carlberget al., Astrophys. J. 462, 32 (1996), DOI: 10.1086/177125. Web of Science, ADS, Google Scholar
A. Dekel , D. Burstein and S. D. M. White , Critical Dialogues in Cosmology , ed. N. Turok ( World Scientific , Singapore , 1997 ) . Google Scholar
P. J. E. Peebles , Formation of Structure in the Universe , eds. A. Dekel and J. P. Ostriker ( Cambridge University Press , 1999 ) . Google Scholar
J. A. S. Lima and J. S. Alcaniz, Mon. Not. R. Astron. Soc. 317, 893 (2000), DOI: 10.1046/j.1365-8711.2000.03695.x. Web of Science, ADS, Google Scholar
J. S. Alcaniz, J. A. S. Lima and J. V. Cunha, Mon. Not. R. Astron. Soc. 340, L39 (2003), DOI: 10.1046/j.1365-8711.2003.06553.x. Web of Science, Google Scholar
G. Sethi, A. Dev and D. Jain, Phys. Lett. B 624, 135 (2005). Web of Science, ADS, Google Scholar
S. W. Allen, R. W. Schmidt and A. C. Fabian, Mon. Not. R. Astron. Soc. 334, L11 (2002), DOI: 10.1046/j.1365-8711.2002.05601.x. Web of Science, Google Scholar
S. Ettori, P. Tozzi and P. Rosati, Astron. Astrophys. 398, 879 (2003), DOI: 10.1051/0004-6361:20021706. Web of Science, ADS, Google Scholar
M. Ozer and M. O. Taha, Phys. Lett. B 171, 363 (1986). Web of Science, ADS, Google Scholar
M. Ozer and M. O. Taha, Nucl. Phys. B 287, 776 (1987), DOI: 10.1016/0550-3213(87)90128-3. Web of Science, ADS, Google Scholar
J. C. Carvalhoet al., Phys. Rev. D 46, 2404 (1992), DOI: 10.1103/PhysRevD.46.2404. Web of Science, ADS, Google Scholar
J. A. S. Lima and J. M. F. Maia, Phys. Rev. D 49, 5597 (1994), DOI: 10.1103/PhysRevD.49.5597. Web of Science, ADS, Google Scholar
J. A. S. Lima and M. Trodden, Phys. Rev. D 53, 4280 (1996), DOI: 10.1103/PhysRevD.53.4280. Web of Science, ADS, Google Scholar
J. A. S. Lima, Phys. Rev. D 54, 2571 (1996), DOI: 10.1103/PhysRevD.54.2571. Web of Science, ADS, Google Scholar
J. V. Cunha, J. A. S. Lima and N. Pires, Astron. Astrophys. 390, 809 (2002), DOI: 10.1051/0004-6361:20020746. Web of Science, ADS, Google Scholar
J. V. Cunha, J. A. S. Lima and J. S. Alcaniz, Phys. Rev. D 66, 023520 (2002), DOI: 10.1103/PhysRevD.66.023520. Web of Science, Google Scholar
J. V. Cunha and R. C. Santos, Int. J. Mod. Phys. D 13, 1321 (2004), DOI: 10.1142/S0218271804005481. Link, Web of Science, ADS, Google Scholar
C. S. Camaraet al., Phys. Rev. D 69, 123504 (2004), DOI: 10.1103/PhysRevD.69.123504. Web of Science, ADS, Google Scholar
J. S. Alcaniz and J. A. S. Lima, Phys. Rev. D 72, 063516 (2005), DOI: 10.1103/PhysRevD.72.063516. Web of Science, Google Scholar
A. R. Cooray and D. Huterer, Astrophys. J. 513, L95 (1999), DOI: 10.1086/311927. Web of Science, Google Scholar
E. V. Linder, Phys. Rev. Lett. 90, 091301 (2003), DOI: 10.1103/PhysRevLett.90.091301. Web of Science, Google Scholar
T. Padmanabhan and T. R. Choudhury, Mon. Not. R. Astron. Soc. 344, 823 (2003), DOI: 10.1046/j.1365-8711.2003.06873.x. Web of Science, ADS, Google Scholar
I. Maor, R. Brustein and P. J. Steinhardt, Phys. Rev. Lett. 86, 6 (2001), DOI: 10.1103/PhysRevLett.86.6. Web of Science, ADS, Google Scholar
J. Weller and A. Albrecht, Phys. Rev. D 65, 103512 (2002), DOI: 10.1103/PhysRevD.65.103512. Web of Science, Google Scholar
J. K. Ericksonet al., Phys. Rev. Lett. 88, 121301 (2002), DOI: 10.1103/PhysRevLett.88.121301. Web of Science, ADS, Google Scholar
U. Pen, New Astronomy 2, 309 (1997), DOI: 10.1016/S1384-1076(97)00021-3. Web of Science, ADS, Google Scholar
S. Sasaki, Publ. Astron. Soc. Japan 48, L19 (2002). Web of Science, Google Scholar
J. A. S. Lima, J. V. Cunha and J. S. Alcaniz, Phys. Rev. D 68, 023510 (2003), DOI: 10.1103/PhysRevD.68.023510. Web of Science, Google Scholar
J. V. Cunha, J. S. Alcaniz and J. A. S. Lima, Phys. Rev. D 69, 083501 (2004), DOI: 10.1103/PhysRevD.69.083501. Web of Science, Google Scholar
W. Freedmanet al., Astrophys. J. 553, 47 (2001), DOI: 10.1086/320638. Web of Science, ADS, Google Scholar
S. W. Allenet al., Mon. Not. R. Astron. Soc. 353, 457 (2004), DOI: 10.1111/j.1365-2966.2004.08080.x. Web of Science, ADS, Google Scholar
D. Kirkmanet al., Astrophys. J. Suppl. 149, 1 (2003), DOI: 10.1086/378152. Web of Science, ADS, Google Scholar
D. Jain and A. Dev, (2005) , astro-ph/0509212 . Google Scholar