GJ
Guðlaugur Johannesson
astro-ph.HEastro-ph.GAastro-ph.COastro-phcosmic rayshep-phdiffusionastro-ph.IMastroparticle physicsInterstellar medium (847)
On Valency
published · living versionsW_eqg7rkbp·v1 · currentpublished
The First Deep Learning all-sky List of Fermi-LAT Gamma-ray Sources
with Saptashwa Bhattacharyya, Giacomo Principe, Dmitry Malyshev, Roberto Ruiz de Austri +3
1 version
W_3qzq3v6g·v1published
Preprints & journals
132 papers in the corpus · 2004–2026Geometry, Not Calorimetry, Drives the Radio/Infrared/Gamma-Ray Correlation2604.21224v2 · Troy A. Porter, Igor V. Moskalenko, Gudlaugur Johannesson2026 · 0 citationsarXiv
Voyager 1 Data Reveals Signatures of the Local Gas and Cosmic-Ray Source Distributions2512.03385v2 · Troy A. Porter, Igor V. Moskalenko, Alan C. Cummings et al.2025 · 2 citationsarXiv
Simulating the Diffuse Neutrino Emission from the Milky Way with GALPROP2511.09777v1 · P. D. Marinos, T. A. Porter, G. P. Rowell et al.2025 · 1 citationarXiv
Spectra of He isotopes and the He/He ratio2502.01887v1 · M. J. Boschini, S. Della Torre, M. Gervasi et al.2025 · 0 citationsApJ 981 (2025) 85
On the Temporal Variability of the Galactic Multi-TeV Interstellar Emissions2411.03553v2 · P. D. Marinos, T. A. Porter, G. P. Rowell et al.2024 · 5 citationsarXiv
The Fermi-LAT Light Curve Repository2301.01607v2 · S. Abdollahi, M. Ajello, L. Baldini et al.2023 · 100 citationsarXiv
Mind the gap: The discrepancy between simulation and reality drives interpretations of the Galactic Center Excess2211.09796v2 · Sascha Caron, Christopher Eckner, Luc Hendriks et al.2022 · 11 citationsarXiv
The Steady-State Multi-TeV Diffuse Gamma-Ray Emission Predicted with GALPROP and Prospects for the Cherenkov Telescope Array2211.01619v2 · P. D. Marinos, G. P. Rowell, T. A. Porter et al.2022 · 12 citationsarXiv
Search for new cosmic-ray acceleration sites within the 4FGL catalog Galactic plane sources2205.03111v1 · S. Abdollahi, F. Acero, M. Ackermann et al.2022 · 11 citationsarXiv
A Gamma-ray Pulsar Timing Array Constrains the Nanohertz Gravitational Wave Background2204.05226v1 · M. Ajello, W. B. Atwood, L. Baldini et al.2022 · 49 citationsarXiv
Spectra of Cosmic Ray Sodium and Aluminum and Unexpected Aluminum Excess2202.09928v2 · M. J. Boschini, S. Della Torre, M. Gervasi et al.2022 · 15 citationsApJ 933 (2022) 147
AutoSourceID-Light. Fast Optical Source Localization via U-Net and Laplacian of Gaussian2202.00489v2 · Fiorenzo Stoppa, Paul Vreeswijk, Steven Bloemen et al.2022 · 11 citationsA&A 662, A109 (2022)
Incremental Fermi Large Area Telescope Fourth Source Catalog2201.11184v3 · Soheila Abdollahi, Fabio Acero, Luca Baldini et al.2022 · 571 citationsApJS 260, 53 (2022)
The GALPROP Cosmic-ray Propagation and Non-thermal Emissions Framework: Release v572112.12745v2 · Troy A. Porter, Gudlaugur Johannesson, Igor V. Moskalenko2021 · 84 citationsThe Astrophysical Journal Supplement 262, 30 (2022)
Erratum: "Inference of the Local Interstellar Spectra of Cosmic-Ray Nuclei Z ⩽ 28 with the GALPROP-HELMOD Framework" (2020, ApJS, 250, 27).34776553 · Boschini, M J, Torre, S Della, Gervasi, M et al.2021 · 3 citationsThe Astrophysical journal. Supplement series. 2021;256(2)
Signatures of Recent Cosmic-Ray Acceleration in the High-latitude Gamma-Ray Sky.34776518 · Jóhannesson, Guđlaugur, Porter, Troy A2026 · 6 citationsThe Astrophysical journal. 2021;917(1)
Fermi Large Area Telescope Performance After 10 Years Of Operation2106.12203v3 · M. Ajello, W. B. Atwood, M. Axelsson et al.2021 · 67 citationsApJS 256 (2021) 12
A Hint of a Low-Energy Excess in Cosmic-Ray Fluorine2106.01626v2 · M. J. Boschini, S. Della Torre, M. Gervasi et al.2021 · 20 citationsApJ 925 (2022) 108
Catalog of Long-Term Transient Sources in the First 10 Years of Fermi-LAT Data2106.00100v1 · L. Baldini, J. Ballet, D. Bastieri et al.2021 · 1 citationarXiv
The Discovery of a Low-energy Excess in Cosmic-Ray Iron: Evidence of the Past Supernova Activity in the Local Bubble.34646050 · Boschini, M J, Della Torre, S, Gervasi, M et al.2024 · 50 citationsThe Astrophysical journal. 2021;913(1)
Identification of point sources in gamma rays using U-shaped convolutional neural networks and a data challenge2103.11068v2 · Boris Panes, Christopher Eckner, Luc Hendriks et al.2021 · 20 citationsA&A 656, A62 (2021)
The First Fermi-LAT Solar Flare Catalog2101.10010v1 · M. Ajello, L. Baldini, D. Bastieri et al.2021 · 62 citationsApJS 252 13 (2021)
A comparison of optimisation algorithms for high-dimensional particle and astrophysics applications2101.04525v2 · The DarkMachines High Dimensional Sampling Group: Csaba Bal'azs, Melissa van Beekveld, Sascha Caron et al.2021 · 29 citationsarXiv
Inference of the Local Interstellar Spectra of Cosmic-Ray Nuclei Z ⩽ 28 with the GalProp-HelMod Framework.34711999 · Boschini, M J, Torre, S Della, Gervasi, M et al.2023 · 123 citationsThe Astrophysical journal. Supplement series. 2020;250(2)
On the measurement of handedness in Fermi Large Area Telescope data2005.13065v1 · Julia Asplund, Gu\dhlaugur J'ohannesson, Axel Brandenburg2020 · 6 citationsAstrophys. J. 898, 124 (2020)
Deciphering the Local Interstellar Spectra of Secondary Nuclei with the Galprop/Helmod Framework and a Hint for Primary Lithium in Cosmic Rays.34646048 · Boschini, M J, Della Torre, S, Gervasi, M et al.2024 · 78 citationsThe Astrophysical journal. 2020;889(2)
Deciphering Residual Emissions: Time-dependent Models for the Nonthermal Interstellar Radiation from the Milky Way.34646047 · Porter, T A, Jóhannesson, G, Moskalenko, I V2023 · 27 citationsThe Astrophysical journal. 2019;887(2)
Fermi and Swift Observations of GRB 190114C: Tracing the Evolution of High-Energy Emission from Prompt to Afterglow1909.10605v2 · M. Ajello, M. Arimoto, M. Axelsson et al.2019 · 77 citationsarXivon Valency
Cosmic-Ray Propagation in Light of the Recent Observation of Geminga.34646046 · Jóhannesson, Guđlaugur, Porter, Troy A, Moskalenko, Igor V2024 · 65 citationsThe Astrophysical journal. 2019;879(2)
MAGIC and Fermi-LAT gamma-ray results on unassociated HAWC sources1901.03982v1 · M. L. Ahnen, S. Ansoldi, L. A. Antonelli et al.2019 · 10 citationsMonthly Notices of the Royal Astronomical Society, Volume 485, Issue 1, May 2019, Pages 356-366
Unresolved Gamma-Ray Sky through its Angular Power Spectrum.30608723 · Ackermann, M, Ajello, M, Baldini, L et al.2019 · 37 citationsPhysical review letters. 2018;121(24):241101
Fermi-LAT improved Pass~8 event selection1810.11394v1 · P. Bruel, T. H. Burnett, S. W. Digel et al.2018 · 91 citationsarXiv
Possible detection of gamma rays from Epsilon Eridani1810.04194v2 · Alexander H. Riley, Louis E. Strigari, Troy A. Porter et al.2018 · 7 citationsarXiv
VERITAS and Fermi-LAT observations of new HAWC sources1808.10423v1 · A. U. Abeysekara, A. Archer, W. Benbow et al.2018 · 39 citationsApJ 866 (2018) no.1, 24
Galactic PeVatrons and helping to find them: Effects of galactic absorption on the observed spectra of very high energy γ-ray sources.34589639 · Porter, T A, Rowell, G P, Jóhannesson, G et al.2023 · 24 citationsPhysical review. D. (2016). 2018;98(4)
Low-energy electrons in GRB afterglow models1805.05875v1 · Gu\dhlaugur J'ohannesson, Gunnlaugur Bjornsson2018 · 1 citationarXiv
Deciphering the Local Interstellar Spectra of Primary Cosmic-Ray Species with helmod.34646045 · Boschini, M J, Della Torre, S, Gervasi, M et al.2026 · 62 citationsThe Astrophysical journal. 2018;858(1)
GALPROP cosmic-ray propagation code: recent results and updates.34712850 · Orlando, Elena, Johannesson, Gudlaugur, Moskalenko, Igor V et al.2023 · 12 citationsNuclear and particle physics proceedings. 2018;297-299:129-134
The Three-dimensional Spatial Distribution of Interstellar Gas in the Milky Way: Implications for Cosmic Rays and High-energy Gamma-ray Emissions.34776517 · Jóhannesson, Guđlaugur, Porter, Troy A, Moskalenko, Igor V2023 · 79 citationsThe Astrophysical journal. 2018;856(1)
Einstein@Home discovers a radio-quiet gamma-ray millisecond pulsar.29503868 · Clark, Colin J, Pletsch, Holger J, Wu, Jason et al.2019 · 53 citationsScience advances. 2018;4(2):eaao7228
HelMod in the Works: From Direct Observations to the Local Interstellar Spectrum of Cosmic-Ray Electrons.34646044 · Boschini, M J, Torre, S Della, Gervasi, M et al.2024 · 69 citationsThe Astrophysical journal. 2018;854(2)
High-energy Gamma Rays from the Milky Way: Three-dimensional Spatial Models for the Cosmic-Ray and Radiation Field Densities in the Interstellar Medium.34646043 · Porter, T A, Jóhannesson, G, Moskalenko, I V2024 · 157 citationsThe Astrophysical journal. 2017;846(1)
Solution of Heliospheric Propagation: Unveiling the Local Interstellar Spectra of Cosmic-ray Species.34711991 · Boschini, M J, Della Torre, S, Gervasi, M et al.2023 · 152 citationsThe Astrophysical journal. 2017;840(2)
Cosmic-ray electron+positron spectrum from 7 GeV to 2 TeV with the Fermi Large Area Telescope1704.07195v1 · S. Abdollahi, M. Ackermann, M. Ajello et al.2017 · 209 citationsPhys. Rev. D 95, 082007 (2017)
Search for Cosmic-Ray Electron and Positron Anisotropies with Seven Years of Fermi Large Area Telescope Data.28306280 · Abdollahi, S, Ackermann, M, Ajello, M et al.2018 · 58 citationsPhysical review letters. 2017;118(9):091103
Fermi-LAT Observations of High-energy Behind-the-limb Solar Flares1702.00577v1 · M. Ackermann, A. Allafort, L. Baldini et al.2017 · 74 citationsApJ 835, 219, 1 February 2017
Search for extended sources in the Galactic Plane using 6 years of Fermi-Large Area Telescope Pass 8 data above 10 GeV1702.00476v2 · M. Ackermann, M. Ajello, L. Baldini et al.2017 · 114 citationsarXiv
From Observations near the Earth to the Local Interstellar Spectra1701.02363v1 · S. Della Torre, M. Gervasi, D. Grandi et al.2016 · 4 citationsarXiv
HelMod: A Comprehensive Treatment of the Cosmic Ray Transport Through the Heliosphere1612.08445v1 · S. Della Torre, M. Gervasi, D. Grandi et al.2016 · 1 citationarXiv
The second catalog of flaring gamma-ray sources from the Fermi All-sky Variability Analysis1612.03165v3 · S. Abdollahi, M. Ackermann, M. Ajello et al.2016 · 100 citationsarXiv
Career total: at least 596 works. 132 are in this corpus.Showing the 50 most recent.
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