Concepedia

Deceleration Parameter

The deceleration parameter is a dimensionless cosmological parameter that quantifies the rate of change of the cosmic expansion acceleration, defined as the negative ratio of the second derivative of the scale factor to the square of the first derivative, distinguishing it from other kinematic parameters by characterizing the transition between decelerating and accelerating expansion phases in Friedmannian cosmology.

623

Publications

53.8K

Citations

1.1K

Authors

558

Institutions

Publications per year

2017–2026

225

Variants

Q0

Parents

Publications

623

Observational Evidence from Supernovae for an Accelerating Universe and a Cosmological Constant

Adam G. Riess, A. V. Filippenko, P. Challis et al. · The Astronomical Journal · 1998 · 19.5K citations · Full text

, , +14

On the Infall of Matter Into Clusters of Galaxies and Some Effects on Their Evolution

James E. Gunn, III Gott J. Richard · The Astrophysical Journal · 1972 · 3.9K citations

, , +16

On the Synthesis of Elements at Very High Temperatures

Robert V. Wagoner, William A. Fowler, F. Hoyle · The Astrophysical Journal · 1967 · 806 citations

, , +16

Two new diagnostics of dark energy

Varun Sahni, Arman Shafieloo, Alexei A. Starobinsky · Physical review. D. Particles, fields, gravitation, and cosmology/Physical review. D, Particles, fields, gravitation, and cosmology · 2008 · 691 citations · Full text

, , +17

Deceleration capacity of heart rate as a predictor of mortality after myocardial infarction: cohort study

Axel Bauer, Jan W. Kantelhardt, Petra Barthel et al. · The Lancet · 2006 · 640 citations

, , +14

1–5 of 623

Authors

1.1K

  1. AP
    Anirudh Pradhan

    GLA University, India

    29 publications · 988 citations

    19

    h-index

  2. UK
    Umesh Kumar Sharma

    GLA University, India

    16 publications · 414 citations

    12

    h-index

  3. PK
    P. K. Sahoo

    Birla Institute of Technology and Science - Hyderabad Campus, India

    12 publications · 589 citations

    12

    h-index

  4. MK
    M. Koussour

    University of Hassan II Casablanca, Morocco

    11 publications · 382 citations

    11

    h-index

  5. CP
    C. P. Singh

    Delhi Technological University, India

    12 publications · 479 citations

    11

    h-index

1–5 of 1.1K

Institutions

558

  1. GLA University

    Mathura, India

    20 h-index

    74 publications

    1.9K citations

  2. Birla Institute of Technology and Science, Pilani

    Pilāni, India

    18 h-index

    44 publications

    2.2K citations

  3. Birla Institute of Technology and Science - Hyderabad Campus

    Hyderabad, India

    17 h-index

    43 publications

    2.1K citations

  4. Delhi Technological University

    New Delhi, India

    16 h-index

    30 publications

    1.3K citations

  5. Hindu College of Pharmacy

    Sonīpat, India

    15 h-index

    23 publications

    1K citations

  6. Andhra University

    Visakhapatnam, India

    13 h-index

    29 publications

    912 citations

  7. COMSATS University Islamabad

    Islamabad, Pakistan

    12 h-index

    33 publications

    780 citations

  8. University of Hassan II Casablanca

    Casablanca, Morocco

    11 h-index

    15 publications

    560 citations

1–8 of 558

Venues

  1. The Astrophysical Journal

    ApJ · 43 publications · 7.7K citations

    27

    h-index

  2. 27

    h-index

  3. Journal of Cosmology and Astroparticle Physics

    JCAP · 41 publications · 2.1K citations

    26

    h-index

  4. The European Physical Journal C

    34 publications · 1.6K citations

    22

    h-index

  5. International Journal of Modern Physics D

    36 publications · 1.2K citations

    22

    h-index

1–5