Concepedia

Radiation Density Parameter

The Radiation Density Parameter is a dimensionless cosmological parameter that quantifies the contribution of relativistic radiation to the total energy density of the universe relative to the critical density required for spatial flatness.

68

Publications

4K

Citations

139

Authors

97

Institutions

Publications per year

2017–2026

13

Variants

Omega_r

Parents

Publications

68

On the formation of massive stars

I. A. Bonnell, Matthew R. Bate, H. Zinnecker · Monthly Notices of the Royal Astronomical Society · 1998 · 585 citations · Full text

, , +17

On the Formation of Massive Stars

H. W. Yorke, C. Sonnhalter · The Astrophysical Journal · 2002 · 453 citations · Full text

, , +17

Anisotropic line emission and the geometry of the broad-line region in active galactic nuclei

G. J. Ferland, B. M. Peterson, K. Horne et al. · The Astrophysical Journal · 1992 · 245 citations

, , +13

First Intrinsic Anisotropy Observations with the Cosmic Background Imager

S. Padin, J. K. Cartwright, Brian Mason et al. · The Astrophysical Journal · 2001 · 165 citations · Full text

, , +17

The Energy Spectrum of Radiation in the Expanding Universe

R. J. Weymann · The Astrophysical Journal · 1966 · 107 citations

, , +14

1–5 of 68

Authors

139

  1. SA
    S. A. Mardan

    University of Management and Technology, Pakistan

    2 publications · 35 citations

    2

    h-index

  2. SH
    Steen Hannestad

    Aarhus University, Denmark

    2 publications · 131 citations

    2

    h-index

  3. GG
    Georg G. Raffelt

    Max Planck Institute for Physics, Germany

    2 publications · 131 citations

    2

    h-index

  4. PK
    P. K. Sahu

    Motilal Nehru National Institute of Technology, India

    2 publications · 42 citations

    2

    h-index

  5. IN
    Ifra Noureen

    University of Management and Technology, Pakistan

    2 publications · 35 citations

    2

    h-index

1–5 of 139

Institutions

97

  1. University of California, Santa Barbara

    Santa Barbara, United States

    3 h-index

    3 publications

    117 citations

  2. Max Planck Institute for Physics

    Munich, Germany

    3 h-index

    6 publications

    454 citations

  3. California Institute of Technology

    Pasadena, United States

    2 h-index

    9 publications

    1.3K citations

  4. Universitat de València

    Valencia, Spain

    2 h-index

    3 publications

    101 citations

  5. Jet Propulsion Laboratory

    Pasadena, United States

    2 h-index

    2 publications

    465 citations

  6. Trieste Astronomical Observatory

    Trieste, Italy

    2 h-index

    2 publications

    35 citations

  7. Istituto Nazionale di Fisica Nucleare, Sezione di Trieste

    Trieste, Italy

    2 h-index

    2 publications

    35 citations

  8. Cornell University

    Ithaca, United States

    2 h-index

    4 publications

    232 citations

1–8 of 97

Venues

  1. The Astrophysical Journal

    ApJ · 13 publications · 1.3K citations

    12

    h-index

  2. Journal of Cosmology and Astroparticle Physics

    JCAP · 9 publications · 529 citations

    9

    h-index

  3. 5

    h-index

  4. Physical Review

    4 publications · 106 citations

    4

    h-index

  5. The European Physical Journal Plus

    3 publications · 125 citations

    3

    h-index

1–5