World's Best Scientists 2026 revealed!

D-Index & Metrics

Physics

D-Index
97
Citations
36830
World Ranking
1808
National Ranking
941

Research.com Recognitions

  • 1982 - Fellow of American Physical Society (APS)

Overview

E. O'Brien is affiliated with Brookhaven National Laboratory in the United States and has contributed research primarily in the field of Medicine. Their work encompasses multiple subfields, including Complementary and Alternative Medicine, Cardiology and Cardiovascular Medicine, and Biomedical Engineering.

The researcher's output focuses on topics such as Cardiovascular and Exercise Physiology, Heart Rate Variability and Autonomic Control, and Non-Invasive Vital Sign Monitoring. These topics reflect an interdisciplinary approach to understanding physiological responses and monitoring methods relevant to health and clinical practice.

O'Brien has published papers in notable venues, including:

  • American Journal of Respiratory and Critical Care Medicine
  • Journal of the American Medical Directors Association

Two recent papers demonstrate the scope of their work:

  • A Comparison of Three Analytic Methods to Detect Cardiopulmonary Exercise Testing Metabolic Thresholds Using Heart Rate Data, published in 2025 in American Journal of Respiratory and Critical Care Medicine
  • Recommendations for COVID-19 Vaccine in Post-Acute and Long-Term Care Residents and Staff, published in 2025 in Journal of the American Medical Directors Association

The researcher collaborates with a range of co-authors spanning similar research interests. The frequent co-authors include:

  • Anming Hu
  • Seong In Cheong
  • Craig G. Simpson
  • Alan K. Pierce
  • David Burke

O'Brien was recognized as a Fellow of the American Physical Society (APS) in 1982, indicating recognized standing within the scientific community.

Best Publications

  • Formation of dense partonic matter in relativistic nucleus–nucleus collisions at RHIC: Experimental evaluation by the PHENIX Collaboration

    K. Adcox;S. S. Adler;S. Afanasiev;C. Aidala;C. Aidala

  • Suppression of hadrons with large transverse momentum in central Au + Au collisions at √sNN = 130 GeV

    K. Adcox;S. S. Adler;N. N. Ajitanand;Y. Akiba

  • PHENIX detector overview

    K. Adcox;S.S. Adler;M. Aizama;N.N. Ajitanand

  • Identified charged particle spectra and yields in Au + Au collisions at √sNN = 200 GeV

    S. S. Adler;S. Afanasiev;C. Aidala;N. N. Ajitanand

  • Elliptic flow of identified hadrons in [formula presented] collisions at [formula presented]

    S. S. Adler;S. Afanasiev;C. Aidala;N. N. Ajitanand

  • Suppressed π0 Production at Large Transverse Momentum in Central Au + Au Collisions at √sNN = 200 GeV

    S. S. Adler;S. Afanasiev;C. Aidala;N. N. Ajitanand

  • Energy loss and flow of heavy quarks in Au+Au collisions at sNN=200GeV

    A. Adare;S. Afanasiev;C. Aidala;N. N. Ajitanand

  • J/psi production versus centrality, transverse momentum, and rapidity in Au+Au collisions at root S-NN=200 GeV

    A. Adare;S. Afanasiev;C. Aidala;N.N. Ajitanand

  • Scaling properties of azimuthal anisotropy in Au+Au and Cu+Cu collisions at sNN=200GeV

    A. Adare;S. Afanasiev;C. Aidala;N. N. Ajitanand

  • Suppressedπ0Production at Large Transverse Momentum in CentralAu+AuCollisions atsNN=200GeV

    S. S. Adler;S. Afanasiev;C. Aidala;N. N. Ajitanand

  • J/ψProduction versus Centrality, Transverse Momentum, andRapidity inAu+AuCollisions atsNN=200GeV

    A. Adare;S. Afanasiev;C. Aidala;N. N. Ajitanand

  • Enhanced Production of Direct Photons in Au plus Au Collisions at root s(NN)=200 GeV and Implications for the Initial Temperature

    A. Adare;S. Afanasiev;C. Aidala;N. N. Ajitanand

  • Absence of suppression in particle production at large transverse momentum in √sNN = 200 GeV d + Au collisions

    S. S. Adler;S. Afanasiev;C. Aidala;N. N. Ajitanand

  • Detailed measurement of the e+e- pair continuum in p+p and Au+Au collisions at √sNN = 200 GeV and implications for direct photon production

    A. Adare;S. Afanasiev;C. Aidala;N. N. Ajitanand

  • Suppression Pattern of Neutral Pions at High Transverse Momentum in Au plus Au Collisions at root S-NN=200 GeV and Constraints on Medium Transport Coefficients

    A. Adare;S. Afanasiev;C. Aidala;N.N. Ajitanand

  • Nuclear modification of electron spectra and implications for heavy quark energy loss in Au+Au collisions at sNN=200GeV

    S. S. Adler;S. Afanasiev;C. Aidala;N. N. Ajitanand

  • Measurements of higher order flow harmonics in Au+Au collisions at √sNN=200GeV

    A. Adare;S. Afanasiev;C. Aidala;N. N. Ajitanand

  • Heavy-quark production in p + p and energy loss and flow of heavy quarks in Au + Au collisions at √sNN=200 GeV

    A. Adare;S. Afanasiev;C. Aidala;N. N. Ajitanand

  • Centrality dependence of π+/-, K+/-, p, and p̄ production from √sNN = 130 GeV Au + Au collisions at RHIC

    K. Adcox;S. S. Adler;N. N. Ajitanand;Y. Akiba

  • The PHENIX Collaboration

    A. Adare;S. Afanasiev;C. Aidala;C. Aidala;N. N. Ajitanand

Frequent Co-Authors

R. Seto
R. Seto University of California, Riverside
C. L. Woody
C. L. Woody Brookhaven National Laboratory
W. A. Zajc
W. A. Zajc Columbia University
D. P. Morrison
D. P. Morrison Brookhaven National Laboratory
M. J. Tannenbaum
M. J. Tannenbaum Brookhaven National Laboratory
P. L. McGaughey
P. L. McGaughey Los Alamos National Laboratory
C. A. Aidala
C. A. Aidala University of Michigan–Ann Arbor
T. C. Awes
T. C. Awes Oak Ridge National Laboratory
S. Nagamiya
S. Nagamiya Japan Atomic Energy Agency
Ryugo S. Hayano
Ryugo S. Hayano University of Tokyo

If you think any of the details on this page are incorrect, let us know.

Report an issue

We appreciate your kind effort to assist us to improve this page, it would be helpful providing us with as much detail as possible in the text box below:

Best Scientists Citing E. O'Brien

Trending Scientists

Recently Published Articles