WMAP 5-year constraints on time variation of α and m in a detailed recombination scenario

Bibcode
2008PhLB..669..212S
DOI
10.1016/j.physletb.2008.09.051
Scóccola, Claudia G.; Landau, Susana J.; Vucetich, Hector
Referencia bibliográfica

Physics Letters B, Volume 669, Issue 3-4, p. 212-216.

Fecha de publicación:
11
2008
Número de autores
3
Número de autores del IAC
0
Número de citas
23
Número de citas referidas
19
Descripción
We study the role of fundamental constants in an updated recombination scenario. We focus on the time variation of the fine structure constant α, and the electron mass m in the early Universe, and put bounds on these quantities by using data from CMB including WMAP 5-yr release and the 2dFGRS power spectrum. We analyze how the constraints are modified when changing the recombination scenario.
Tipo
Con árbitro

Te puede interesar

  • Con árbitro
    Overmassive Black Holes at Cosmic Noon: Linking the Local and the High-redshift Universe
    We report for the first time a sample of 12 supermassive black holes (SMBHs) hosted by low-mass galaxies at cosmic noon, i.e., in a redshift range consistent with the peak of star formation history: z ∼ 1–3. These black holes are 2 orders of magnitude too massive for the stellar content of their hosts when compared with the local relation for
    Mezcua, Mar et al.

    Fecha de publicación:

    5
    2024
    Bibcode
    2024ApJ...966L..30M
    Número de citas
    0
  • Con árbitro
    The tidal deformation and atmosphere of WASP-12 b from its phase curve★
    Context. Ultra-hot Jupiters present a unique opportunity to understand the physics and chemistry of planets, their atmospheres, and interiors at extreme conditions. WASP-12 b stands out as an archetype of this class of exoplanets, with a close-in orbit around its star that results in intense stellar irradiation and tidal effects. Aims: The goals
    Akinsanmi, B. et al.

    Fecha de publicación:

    5
    2024
    Bibcode
    2024A&A...685A..63A
    Número de citas
    0
  • Con árbitro
    The Gaia-ESO Survey: The DR5 analysis of the medium-resolution GIRAFFE and high-resolution UVES spectra of FGK-type stars
    The Gaia-ESO Survey is an European Southern Observatory (ESO) public spectroscopic survey that targeted 10 5 stars in the Milky Way covering the major populations of the disk, bulge and halo. The observations were made using FLAMES on the VLT obtaining both UVES high (R ~ 47 000) and GIRAFFE medium (R ~ 20 000) resolution spectra. The analysis of
    Worley, C. C. et al.

    Fecha de publicación:

    4
    2024
    Bibcode
    2024A&A...684A.148W
    Número de citas
    1