Bharat Ratra

18.0k total citations · 5 hit papers
127 papers, 12.4k citations indexed

About

Bharat Ratra is a scholar working on Astronomy and Astrophysics, Nuclear and High Energy Physics and Oceanography. According to data from OpenAlex, Bharat Ratra has authored 127 papers receiving a total of 12.4k indexed citations (citations by other indexed papers that have themselves been cited), including 122 papers in Astronomy and Astrophysics, 66 papers in Nuclear and High Energy Physics and 17 papers in Oceanography. Recurrent topics in Bharat Ratra's work include Cosmology and Gravitation Theories (116 papers), Galaxies: Formation, Evolution, Phenomena (63 papers) and Black Holes and Theoretical Physics (33 papers). Bharat Ratra is often cited by papers focused on Cosmology and Gravitation Theories (116 papers), Galaxies: Formation, Evolution, Phenomena (63 papers) and Black Holes and Theoretical Physics (33 papers). Bharat Ratra collaborates with scholars based in United States, Georgia and Japan. Bharat Ratra's co-authors include P. J. E. Peebles, Omer Farooq, Tina Kahniashvili, Chan‐Gyung Park, Narayan Khadka, Shulei Cao, Joseph Ryan, Yun Chen, Naoshi Sugiyama and Gang Chen and has published in prestigious journals such as Physical Review Letters, Reviews of Modern Physics and The Astrophysical Journal.

In The Last Decade

Bharat Ratra

126 papers receiving 12.0k citations

Hit Papers

The cosmological constant and dark energy 1988 2026 2000 2013 2003 1988 1988 1992 2024 1000 2.0k 3.0k
What are hit papers?

Hit papers significantly outperform the citation benchmark for their cohort. A paper qualifies if it has ≥500 total citations, achieves ≥1.5× the top-1% citation threshold for papers in the same subfield and year (this is the minimum needed to enter the top 1%, not the average within it), or reaches the top citation threshold in at least one of its specific research topics.

  1. The cosmological constant and dark energy
    2003 3.2k citations P. J. E. Peebles, Bharat Ratra Reviews of Modern Physics profile →
  2. Cosmological consequences of a rolling homogeneous scalar field
    1988 2.8k citations Bharat Ratra, P. J. E. Peebles profile →
  3. Cosmology with a time-variable cosmological 'constant'
    1988 1.1k citations P. J. E. Peebles, Bharat Ratra The Astrophysical Journal profile →
  4. Cosmological 'seed' magnetic field from inflation
    1992 489 citations Bharat Ratra The Astrophysical Journal profile →
  5. Using non-DESI data to confirm and strengthen the DESI 2024 spatially flat w0waCDM cosmological parametrization result
    2024 76 citations Chan‐Gyung Park, Bharat Ratra et al. profile →

Peers

Bharat Ratra
Pedro G. Ferreira United Kingdom
Gregory S. Tucker United States
Hiranya V. Peiris United Kingdom
S. Matarrese Italy
A. Clocchiatti United States
Antonio Riotto Switzerland
P. Challis United States
R. Chris Smith United States
Ron Gilliland United States
M. Limon United States
Pedro G. Ferreira United Kingdom
Bharat Ratra
Citations per year, relative to Bharat Ratra Bharat Ratra (= 1×) peers Pedro G. Ferreira

Countries citing papers authored by Bharat Ratra

Since Specialization
Citations

This map shows the geographic impact of Bharat Ratra's research. It shows the number of citations coming from papers published by authors working in each country. You can also color the map by specialization and compare the number of citations received by Bharat Ratra with the expected number of citations based on a country's size and research output (numbers larger than one mean the country cites Bharat Ratra more than expected).

Fields of papers citing papers by Bharat Ratra

Since Specialization
Physical SciencesHealth SciencesLife SciencesSocial Sciences

This network shows the impact of papers produced by Bharat Ratra. Nodes represent research fields, and links connect fields that are likely to share authors. Colored nodes show fields that tend to cite the papers produced by Bharat Ratra. The network helps show where Bharat Ratra may publish in the future.

Co-authorship network of co-authors of Bharat Ratra

This figure shows the co-authorship network connecting the top 25 collaborators of Bharat Ratra. A scholar is included among the top collaborators of Bharat Ratra based on the total number of citations received by their joint publications. Widths of edges represent the number of papers authors have co-authored together. Node borders signify the number of papers an author published with Bharat Ratra. Bharat Ratra is excluded from the visualization to improve readability, since they are connected to all nodes in the network.

All Works

20 of 20 papers shown
1.
Cao, Shulei & Bharat Ratra. (2025). Testing the consistency of new Amati-correlated gamma-ray burst dataset cosmological constraints with those from better-established cosmological data. Journal of Cosmology and Astroparticle Physics. 2025(9). 81–81.
2.
Cao, Shulei, Michal Zajaček, B. Czerny, Swayamtrupta Panda, & Bharat Ratra. (2024). Effects of heterogeneous data sets and time-lag measurement techniques on cosmological parameter constraints from Mg ii and C iv reverberation-mapped quasar data. Monthly Notices of the Royal Astronomical Society. 528(4). 6444–6469. 8 indexed citations
3.
Cao, Shulei & Bharat Ratra. (2024). Testing the standardizability of, and deriving cosmological constraints from, a new Amati-correlated gamma-ray burst data compilation. Journal of Cosmology and Astroparticle Physics. 2024(10). 93–93. 8 indexed citations
4.
Czerny, B., Shulei Cao, V. Karas, et al.. (2023). Accretion disks, quasars and cosmology: meandering towards understanding. Astrophysics and Space Science. 368(2). 13 indexed citations
5.
Khadka, Narayan, Michal Zajaček, Raj Prince, et al.. (2023). Quasar UV/X-ray relation luminosity distances are shorter than reverberation-measured radius–luminosity relation luminosity distances. Monthly Notices of the Royal Astronomical Society. 522(1). 1247–1264. 23 indexed citations
6.
Cao, Shulei & Bharat Ratra. (2022). Using lower-redshift, non-CMB, data to constrain the Hubble constant and other cosmological parameters. arXiv (Cornell University). 56 indexed citations
7.
Khadka, Narayan, Orlando Luongo, Marco Muccino, & Bharat Ratra. (2021). Do gamma-ray burst measurements provide a useful test of cosmological models?. arXiv (Cornell University). 71 indexed citations
8.
Zhai, Zhongxu, Chan‐Gyung Park, Yun Wang, & Bharat Ratra. (2020). CMB distance priors revisited: effects of dark energy dynamics, spatial curvature, primordial power spectrum, and neutrino parameters. Journal of Cosmology and Astroparticle Physics. 2020(7). 9–9. 27 indexed citations
9.
Park, Chan‐Gyung & Bharat Ratra. (2018). Observational Constraints on the Tilted Spatially Flat and the Untilted Nonflat ϕCDM Dynamical Dark Energy Inflation Models. The Astrophysical Journal. 868(2). 83–83. 62 indexed citations
10.
Chen, Yun, et al.. (2016). CONSTRAINTS ON NON-FLAT COSMOLOGIES WITH MASSIVE NEUTRINOS AFTER PLANCK 2015. The Astrophysical Journal. 829(2). 61–61. 50 indexed citations
11.
Houston, Stephen, et al.. (2014). Non-Gaussian Error Distribution of 7Li Abundance Measurements. 9 indexed citations
12.
Chen, Yun & Bharat Ratra. (2012). Galaxy cluster angular-size data constraints on dark energy. Astronomy and Astrophysics. 543. A104–A104. 16 indexed citations
13.
Alcaniz, J. S., et al.. (2011). Time and distance constraints on accelerating cosmological models. Physics Letters B. 699(4). 239–245. 11 indexed citations
14.
Chen, Yun & Bharat Ratra. (2011). Hubble parameter data constraints on dark energy. Physics Letters B. 703(4). 406–411. 38 indexed citations
15.
Alcaniz, J. S., et al.. (2010). Distance and time constraints on accelerating cosmological models. arXiv (Cornell University). 2 indexed citations
16.
Ratra, Bharat & Michael S. Vogeley. (2007). Resource Letter: BE-1: The Beginning and Evolution of the Universe. arXiv (Cornell University). 2 indexed citations
17.
Kahniashvili, Tina, G. Gogoberidze, & Bharat Ratra. (2005). Polarized Cosmological Gravitational Waves from Primordial Helical Turbulence. Physical Review Letters. 95(15). 151301–151301. 46 indexed citations
18.
Peebles, P. J. E. & Bharat Ratra. (2003). The cosmological constant and dark energy. Reviews of Modern Physics. 75(2). 559–606. 3184 indexed citations breakdown →
19.
Gott, J. Richard, et al.. (2001). Median Statistics,H0, and the Accelerating Universe. The Astrophysical Journal. 549(1). 1–17. 142 indexed citations
20.
Peebles, P. J. E. & Bharat Ratra. (1988). Cosmology with a time-variable cosmological 'constant'. The Astrophysical Journal. 325. L17–L17. 1132 indexed citations breakdown →

Rankless uses publication and citation data sourced from OpenAlex, an open and comprehensive bibliographic database. While OpenAlex provides broad and valuable coverage of the global research landscape, it—like all bibliographic datasets—has inherent limitations. These include incomplete records, variations in author disambiguation, differences in journal indexing, and delays in data updates. As a result, some metrics and network relationships displayed in Rankless may not fully capture the entirety of a scholar's output or impact.

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