G. Jóhannesson

47.6k total citations · 1 hit paper
62 papers, 2.1k citations indexed

About

G. Jóhannesson is a scholar working on Nuclear and High Energy Physics, Astronomy and Astrophysics and Geophysics. According to data from OpenAlex, G. Jóhannesson has authored 62 papers receiving a total of 2.1k indexed citations (citations by other indexed papers that have themselves been cited), including 35 papers in Nuclear and High Energy Physics, 26 papers in Astronomy and Astrophysics and 8 papers in Geophysics. Recurrent topics in G. Jóhannesson's work include Astrophysics and Cosmic Phenomena (30 papers), Dark Matter and Cosmic Phenomena (27 papers) and Gamma-ray bursts and supernovae (12 papers). G. Jóhannesson is often cited by papers focused on Astrophysics and Cosmic Phenomena (30 papers), Dark Matter and Cosmic Phenomena (27 papers) and Gamma-ray bursts and supernovae (12 papers). G. Jóhannesson collaborates with scholars based in Iceland, United States and Sweden. G. Jóhannesson's co-authors include T. A. Porter, I. V. Moskalenko, Stephen C. Myers, N. A. Simmons, E. Orlando, E. Matzel, Thomas Weber, A. W. Strong, Alexey Vladimirov and E. C. Stone and has published in prestigious journals such as Journal of Geophysical Research Atmospheres, The Astrophysical Journal and Geophysical Research Letters.

In The Last Decade

G. Jóhannesson

59 papers receiving 2.0k citations

Hit Papers

align trajectories

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.

GALACTIC COSMIC RAYS IN THE LOCAL INTERSTELLAR MEDIUM: VOYAGER 1 OBSERVATIONS AND MODEL RESULTS

2016 303 citations A. C. Cummings, E. C. Stone et al. The Astrophysical Journal profile →

Peers — A (Enhanced Table)

Peers by citation overlap · career bar shows stage (early→late) cites · hero ref

Name	h						Papers	Cites
G. Jóhannesson Iceland	21	1.0k	942	452	172	98	62	2.1k
P. R. Brady United States	27	1.1k 1.1×	2.5k 2.6×	392 0.9×	38 0.2×	30 0.3×	57	2.8k
S. M. White United States	32	323 0.3×	3.3k 3.5×	97 0.2×	32 0.2×	44 0.4×	240	3.9k
Daniele Viganò Spain	24	344 0.3×	1.3k 1.4×	975 2.2×	24 0.1×	72 0.7×	79	2.4k
A. K. H. Kong Taiwan	25	645 0.6×	1.7k 1.8×	149 0.3×	27 0.2×	49 0.5×	160	1.8k
O. Ishihara Japan	20	260 0.3×	957 1.0×	539 1.2×	60 0.3×	151 1.5×	101	1.6k
C. Boucher France	19	471 0.5×	477 0.5×	564 1.2×	11 0.1×	21 0.2×	116	1.9k
Shui Wang China	27	607 0.6×	2.3k 2.4×	531 1.2×	29 0.2×	6 0.1×	116	2.5k
H. Lamy Belgium	14	170 0.2×	596 0.6×	87 0.2×	23 0.1×	12 0.1×	53	707
C. Peralta Germany	13	48 0.0×	242 0.3×	99 0.2×	43 0.3×	367 3.7×	27	777
P. N. Bhat United States	17	405 0.4×	1.6k 1.7×	306 0.7×	6 0.0×	8 0.1×	99	1.8k

Countries citing papers authored by G. Jóhannesson

Since Specialization

Citations

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

Fields of papers citing papers by G. Jóhannesson

Since Specialization

Physical SciencesHealth SciencesLife SciencesSocial Sciences

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

Co-authorship network of co-authors of G. Jóhannesson

This figure shows the co-authorship network connecting the top 25 collaborators of G. Jóhannesson. A scholar is included among the top collaborators of G. Jóhannesson 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 G. Jóhannesson. G. Jóhannesson is excluded from the visualization to improve readability, since they are connected to all nodes in the network.

All Works

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20 of 20 papers shown

Porter, T. A., et al.. (2025). On the Temporal Variability of the Galactic Multi-TeV Interstellar Emissions. The Astrophysical Journal. 981(1). 93–93. 2 indexed citations

Cummings, A. C., I. V. Moskalenko, B. C. Heikkila, G. Jóhannesson, & T. A. Porter. (2025). Voyager 1 Observations of Galactic Cosmic-Ray Isotopes in the Very Local Interstellar Medium: Evidence for Primary ² H and B. The Astrophysical Journal. 993(1). 81–81.

Moskalenko, I. V., T. A. Porter, & G. Jóhannesson. (2023). The GALPROP cosmic ray and non-thermal photon emissions framework: v57 release. 41–41. 1 indexed citations

Boschini, M., S. Della Torre, M. Gervasi, et al.. (2022). Spectra of Cosmic-Ray Sodium and Aluminum and Unexpected Aluminum Excess. The Astrophysical Journal. 933(2). 147–147. 9 indexed citations

Porter, T. A., et al.. (2022). The GALPROP Cosmic-ray Propagation and Nonthermal Emissions Framework: Release v57. The Astrophysical Journal Supplement Series. 262(1). 30–30.

Bloemen, S., G. Jóhannesson, Roberto Ruiz de Austri, et al.. (2022). AutoSourceID-Light. Astronomy and Astrophysics. 662. A109–A109. 9 indexed citations

Porter, T. A., G. Jóhannesson, & I. V. Moskalenko. (2021). The GALPROP Cosmic-ray Propagation and Non-thermal Emissions Framework: Release v57. arXiv (Cornell University). 45 indexed citations

Jóhannesson, G. & T. A. Porter. (2021). Signatures of Recent Cosmic-Ray Acceleration in the High-Latitude gamma-Ray Sky. Proceedings of 37th International Cosmic Ray Conference — PoS(ICRC2021). 615–615. 1 indexed citations

Jóhannesson, G., T. A. Porter, & I. V. Moskalenko. (2019). Cosmic-Ray Propagation in Light of the Recent Observation of Geminga. The Astrophysical Journal. 879(2). 91–91. 39 indexed citations

10.

Boschini, M., S. Della Torre, M. Gervasi, et al.. (2018). Deciphering the Local Interstellar Spectra of Primary Cosmic-Ray Species with HelMod. The Astrophysical Journal. 858(1). 61–61. 28 indexed citations

11.

Jóhannesson, G., T. A. Porter, & I. V. Moskalenko. (2018). The Three-dimensional Spatial Distribution of Interstellar Gas in the Milky Way: Implications for Cosmic Rays and High-energy Gamma-ray Emissions. The Astrophysical Journal. 856(1). 45–45. 41 indexed citations

12.

Boschini, M., S. Della Torre, M. Gervasi, et al.. (2017). Solution of Heliospheric Propagation: Unveiling the Local Interstellar Spectra of Cosmic-ray Species. The Astrophysical Journal. 840(2). 115–115. 93 indexed citations

13.

Cummings, A. C., E. C. Stone, B. C. Heikkila, et al.. (2016). GALACTIC COSMIC RAYS IN THE LOCAL INTERSTELLAR MEDIUM: VOYAGER 1 OBSERVATIONS AND MODEL RESULTS. The Astrophysical Journal. 831(1). 18–18. 303 indexed citations breakdown →

14.

Jóhannesson, G., Roberto Ruiz de Austri, Aaron C. Vincent, et al.. (2016). BAYESIAN ANALYSIS OF COSMIC RAY PROPAGATION: EVIDENCE AGAINST HOMOGENEOUS DIFFUSION. The Astrophysical Journal. 824(1). 16–16. 103 indexed citations

15.

Tibaldo, L., S. W. Digel, J. M. Casandjian, et al.. (2015). FERMI-LAT OBSERVATIONS OF HIGH- AND INTERMEDIATE-VELOCITY CLOUDS: TRACING COSMIC RAYS IN THE HALO OF THE MILKY WAY. The Astrophysical Journal. 807(2). 161–161. 25 indexed citations

16.

Jóhannesson, G., I. V. Moskalenko, & T. A. Porter. (2013). Toward 3D Mapping of the Interstellar Medium in the Milky Way: Impact on Cosmic Rays and Diffuse Emission. International Cosmic Ray Conference. 33. 1204. 4 indexed citations

17.

Strong, A. W., I. V. Moskalenko, T. A. Porter, et al.. (2010). GALPROP: Code for Cosmic-ray Transport and Diffuse Emission Production. ascl. 8 indexed citations

18.

Orlando, E., A. W. Strong, I. V. Moskalenko, et al.. (2010). Cosmic Rays And Magnetic Fields Constrained By Synchrotron And Gamma Rays. 11. 1 indexed citations

19.

Jóhannesson, G., G. Björnsson, & E. H. Gudmundsson. (2007). Luminosity functions of gamma-ray burst afterglows. Springer Link (Chiba Institute of Technology). 3 indexed citations

20.

Postigo, A. de Ugarte, A. J. Castro‐Tirado, J. Gorosabel, et al.. (2005). GRB 021004 modelled by multiple energy injections. LA Referencia (Red Federada de Repositorios Institucionales de Publicaciones Científicas). 24 indexed citations

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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