Ray Bertram

2.7k citations
29 papers · 1.6k · h-index 20

Impact in

  • Astronomy and Astrophysics top 5%
    • Galaxies: Formation, Evolution, Phenomena
    • Astrophysical Phenomena and Observations
    • Gamma-ray bursts and supernovae
    • Stellar, planetary, and galactic studies
    • Astrophysics and Star Formation Studies
  • Instrumentation top 5%
    • Astronomy and Astrophysical Research

Papers in

  • Astronomy and Astrophysics 23
    • Stellar, planetary, and galactic studies 14
    • Galaxies: Formation, Evolution, Phenomena 11
    • Astrophysical Phenomena and Observations 5
    • Astrophysics and Star Formation Studies 4
  • Instrumentation 9
    • Astronomy and Astrophysical Research 9
Co-authors
R. Mark Wagner (6 shared papers)Bradley M. Peterson (7 shared papers)Richard W. Pogge (5 shared papers)Ignaz Wanders (2 shared papers)B. J. Wilkes (2 shared papers)J. P. Huchra (2 shared papers)James Peters (1 shared paper)Patrizia Romano (1 shared paper)
Journals
The Astrophysical Journal (20 papers)Astronomy and Astrophysics (1 paper)The Astrophysical Journal Supplement Series (1 paper)The Astronomical Journal (1 paper)Lecture notes in physics (1 paper)
Partner nations
United StatesGermanyUkraine

In The Last Decade

Ray Bertram

27 papers receiving 1.5k citations

Peers

Ray Bertram
Comparison fields: 5 of 39
  • Astronomy and Astrophysics 1.5k
  • Instrumentation 234
  • Nuclear and High Energy Physics 394
  • Statistical and Nonlinear Physics 70
  • Atomic and Molecular Physics, and Optics 148
Replace Giovanna Maria Stirpe with:
Giovanna Maria Stirpe Italy
Alla I. Shapovalova Russia
N. G. Bochkarev Russia
Gordon M. MacAlpine United States
D. Wills United States
G. A. Reichert United States
Massimo Calvani Italy
D. Dultzin‐Hacyan Mexico
B. Aracil France
Yair Krongold Mexico
Ray Bertram relative to Giovanna Maria Stirpe Italy Giovanna Maria Stirpe's profile →
Citations per field
00.5×1.5×
Giovanna Maria Stirpe · 1×
Citations per year

Countries citing papers authored by Ray Bertram

Since Specialization
Citations

This map shows the geographic impact of Ray Bertram'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 Ray Bertram with the expected number of citations based on a country's size and research output (numbers larger than one mean the country cites Ray Bertram more than expected).

Fields of papers citing papers by Ray Bertram

Since Specialization
Physical SciencesHealth SciencesLife SciencesSocial Sciences

This network shows the impact of papers produced by Ray Bertram. 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 Ray Bertram. The network helps show where Ray Bertram may publish in the future.

Co-authors

The 25 scholars most cited alongside Ray Bertram, linked wherever they have co-authored with each other. Click a name or a connecting line to browse the papers they share.

Border = papers with Ray Bertram Line = papers co-authored together Ray Bertram links everyone, so they are left out of the graph.

All Works

20 of 20 papers shown

Showing the 20 most-cited of 29 papers — load more, or switch the sort, to bring in the rest.

#Work
1
Optical Continuum and Emission‐Line Variability of Seyfert 1 Galaxies
The Astrophysical Journal ·Bradley M. Peterson, Ignaz Wanders, Ray Bertram, James F. Hunley, Richard W. Pogge, R. Mark Wagner
1998193
2
Steps toward Determination of the Size and Structure of the Broad‐Line Region in Active Galactic Nuclei. XIV. Intensive Optical Spectrophotometric Observations of NGC 7469
The Astrophysical Journal ·S. J. Collier, Keith Horne, Shai Kaspi, Hagai netzer, Bradley M. Peterson, Ignaz Wanders, Tal Alexander, Ray Bertram
1998147
3
X‐Ray and Optical Variability in NGC 4051 and the Nature of Narrow‐Line Seyfert 1 Galaxies
The Astrophysical Journal ·Bradley M. Peterson, Ian M. McHardy, B. J. Wilkes, Ray Bertram, M. Calkins, S. J. Collier, J. P. Huchra, Savita Mathur
2000146
4
Steps toward determination of the size and structure of the broad-line region in active galactic nuclei. II - an intensive study of NGC 5548 at optical wavelengths
The Astrophysical Journal ·Bradley M. Peterson, T. J. Balonek, Edwin S. Barker, Jill Bechtold, Ray Bertram, N. G. Bochkarev, M. Bolte, D. Bond
1991135
5
Steps toward Determination of the Size and Structure of the Broad‐Line Region in Active Galactic Nuclei. XVI. A 13 Year Study of Spectral Variability in NGC 5548
The Astrophysical Journal ·Bradley M. Peterson, Ray Bertram, K. Bischoff, N. G. Bochkarev, N. V. Borisov, A. N. Burenkov, M. Calkins, L. Carrasco
2002132
6
Multiwavelength Observations of Short-Timescale Variability in NGC 4151. IV. Analysis of Multiwavelength Continuum Variability
The Astrophysical Journal ·R. A. Edelson, Tal Alexander, D. Michael Crenshaw, Shai Kaspi, M. A. Malkan, Bradley M. Peterson, R. S. Warwick, Jean Clavel
1996120
7
Steps toward Determination of the Size and Structure of the Broad‐Line Region in Active Galactic Nuclei. XII. Ground‐based Monitoring of 3C 390.3
The Astrophysical Journal Supplement Series ·Matthias Dietrich, Bradley M. Peterson, P. Albrecht, Martin Altmann, Aaron J. Barth, Paul J. Bennie, Ray Bertram, N. G. Bochkarev
199879
8
Multiwavelength Observations of Short-Timescale Variability in NGC 4151. II. Optical Observations
The Astrophysical Journal ·Shai Kaspi, Dan Maoz, Hagai netzer, Bradley M. Peterson, Tal Alexander, Aaron J. Barth, Ray Bertram, F.-Z. Cheng
199666
9
Steps toward Determination of the Size and Structure of the Broad‐Line Region in Active Galactic Nuclei. XV. Long‐Term Optical Monitoring of NGC 5548
The Astrophysical Journal ·Bradley M. Peterson, Aaron J. Barth, Ray Bertram, K. Bischoff, N. G. Bochkarev, A. N. Burenkov, F. Z. Cheng, Matthias Dietrich
199958
10
Steps toward determination of the size and structure of the broad-line region in active galactic nuclei. 6: Variability of NGC 3783 from ground-based data
The Astrophysical Journal ·Giovanna Maria Stirpe, C. Winge, Bruno Altieri, D. Alloin, E. L. Agüero, Gadiyara Chakrapani Anupama, Richard Ashley, Ray Bertram
199458
11
Variations of the ultraviolet Fe II and Balmer continuum emission in the Seyfert galaxy NGC 5548
The Astrophysical Journal ·Dan Maoz, Hagai netzer, Bradley M. Peterson, Jill Bechtold, Ray Bertram, N. G. Bochkarev, T. E. Carone, Matthias Dietrich
199358
12
Steps toward determination of the size and structure of the broad-line region in active nuclei. 7: Variability of the optical spectrum of NGC 5548 over years
The Astrophysical Journal ·Bradley M. Peterson, Ray Bertram, N. G. Bochkarev, D. Bond, M. S. Brotherton, Jennifer Busler, K. K. Chuvaev, Ross D. Cohen
199455
13
Multiwavelength Monitoring of the Narrow‐Line Seyfert 1 Galaxy Arakelian 564. III. Optical Observations and the Optical–UV–X‐Ray Connection
The Astrophysical Journal ·Ohad Shemmer, Patrizia Romano, Ray Bertram, W. Brinkmann, S. J. Collier, K. A. Crowley, Emmanouil Detsis, Alexei Filippenko
200148
14
Steps toward determination of the size and structure of the broad-line region in active galactic nuclei. IV - Intensity variations of the optical emission lines of NGC 5548
The Astrophysical Journal ·Matthias Dietrich, Wolfram Kollatschny, Bradley M. Peterson, Jill Bechtold, Ray Bertram, N. G. Bochkarev, Todd A. Boroson, T. E. Carone
199348
15
Steps toward determination of the size and structure of the broad-line region in active galactic nuclei. III - Further observations of NGC 5548 at optical wavelengths
The Astrophysical Journal ·Bradley M. Peterson, D. Alloin, D. J. Axon, T. J. Balonek, Ray Bertram, Todd A. Boroson, J. A. Christensen, Sandra D. Clements
199238
16
Monitoring of the optical and 2.5-11.7μm spectrum and mid-IR imaging of the Seyfert 1 galaxy Mrk 279 with ISO
Astronomy and Astrophysics ·M. Santos‐Lleó, Jean Clavel, B. Schulz, Bruno Altieri, Paul C. Barr, D. Alloin, Ray Bertram, D. Michael Crenshaw
200130
17
The diameter of Juno from its occultation of AG + 0 deg 1022
The Astronomical Journal ·Robert L. Millis, Lawrence H. Wasserman, E. Bowell, O. G. Franz, Nathaniel M. White, G. W. Lockwood, Ralph A. Nye, Ray Bertram
198129
18
Optical Continuum and Emission‐Line Variability of the Seyfert 1 Galaxy Markarian 509
The Astrophysical Journal ·T. E. Carone, Bradley M. Peterson, Jill Bechtold, Ray Bertram, K. Bischoff, Matthias Dietrich, A. V. Filppenko, Luis Ho
199625
19
Broad Emission‐Line Variability in Markarian 335
The Astrophysical Journal ·Tina Marie Kassebaum, Bradley M. Peterson, Ignaz Wanders, Richard W. Pogge, Ray Bertram, R. Mark Wagner
199723
20
Optical identification of the X-ray source GS 2023 + 338 as V404 Cygni
The Astrophysical Journal ·R. M. Wagner, Ray Bertram, Sumner G. Starrfield, Steve B. Howell, Tobias J. Kreidl, Schelte Bus, A. Cassatella, Robert Fried
199121

About Ray Bertram

Ray Bertram is a scholar working on Astronomy and Astrophysics, Instrumentation, Computational Mechanics, Statistical and Nonlinear Physics and Radiation, having authored 29 papers that have together received 1.6k indexed citations. Recurring topics across this work include Stellar, planetary, and galactic studies (14 papers), Galaxies: Formation, Evolution, Phenomena (11 papers), Astronomical Observations and Instrumentation (9 papers), Astronomy and Astrophysical Research (9 papers), Astrophysical Phenomena and Observations (5 papers), Astrophysics and Star Formation Studies (4 papers), Scientific Research and Discoveries (3 papers) and Astrophysics and Cosmic Phenomena (2 papers). The work is most often cited by research in Astronomy and Astrophysics (1.5k citations), Instrumentation (234 citations), Nuclear and High Energy Physics (394 citations), Statistical and Nonlinear Physics (70 citations) and Atomic and Molecular Physics, and Optics (148 citations). Ray Bertram has collaborated with scholars based in United States, Germany and Ukraine. Frequent co-authors include R. Mark Wagner, Bradley M. Peterson, Richard W. Pogge, Ignaz Wanders, B. J. Wilkes, J. P. Huchra, James Peters, Patrizia Romano, Savita Mathur and Susan Tokarz. Their work appears in journals such as The Astrophysical Journal, Astronomy and Astrophysics, The Astrophysical Journal Supplement Series, The Astronomical Journal and Lecture notes in physics.

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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