Prof. Dr. Stefan Funk

2025

• Glombitza, J., Schneider, M., Leitl, F., Funk, S., & van Eldik, C. (2025). Application of graph networks to a wide-field water-Cherenkov-based Gamma-ray Observatory. Journal of Cosmology and Astroparticle Physics, 2025(2). https://doi.org/10.1088/1475-7516/2025/02/066
• Unbehaun, T., Guedes Lang, R., Deka Baruah, A., Bedur Ramesh, P., Celic, J., Mohrmann, L.,... Funk, S. (2025). Improvements to monoscopic analysis for imaging atmospheric Cherenkov telescopes: Application to H.E.S.S. Astronomy & Astrophysics, 694. https://doi.org/10.1051/0004-6361/202452927

2024

• Bruers, B., Cruces, M., Demleitner, M., Duckeck, G., Düren, M., Eich, N.,... Zhou, K. (2024). Resource-aware research on Universe and Matter: call-to-action in digital transformation. European Physical Journal - Special Topics. https://doi.org/10.1140/epjs/s11734-024-01436-4
• Elflein, C., Funk, S., & Glombitza, J. (2024). Ultra-fast generation of air shower images for Imaging Air Cherenkov Telescopes using Generative Adversarial Networks. Journal of Instrumentation, 19(4). https://doi.org/10.1088/1748-0221/19/04/P04010
• Glombitza, J., Joshi, V., Bruno, B., & Funk, S. (2024). Application of graph networks to γ/hadron separation in IACT image analyses. In Proceedings of Science. Nagoya, JPN: Sissa Medialab Srl.
• Leuschner, F., Schäfer, J., Steinmassl, S., Holch, T.L., Bernlöhr, K., Funk, S.,... Pühlhofer, G. (2024). Validating Monte Carlo simulations for an analysis chain in H.E.S.S. In Proceedings of Science. Barcelona, ESP: Sissa Medialab Srl.
• Mohrmann, L., Joshi, V., Hinton, J., & Funk, S. (2024). Revisiting HESS J1809−193 — a very-high-energy gamma-ray source in a fascinating environment. In Proceedings of Science. Barcelona, ES: Sissa Medialab Srl.
• Schreiner, S., Rauch, C., Akstaller, B., Bleuel, P., Fröjdh, E., Ludwig, V.,... Funk, S. (2024). Design of a Talbot phase-contrast microscopy imaging system with a digital detector for laser-driven X-ray backlighter sources. Journal of Instrumentation, 19(5). https://doi.org/10.1088/1748-0221/19/05/P05004
• Schwab, B., Zink, A., Varner, G., Depaoli, D., Hinton, J., Liu, G.,... Funk, S. (2024). CTC and CT5TEA: An advanced multi-channel digitizer and trigger ASIC for imaging atmospheric Cherenkov telescopes. Nuclear Instruments and Methods in Physics Research Section A: Accelerators, Spectrometers, Detectors and Associated Equipment, 1069. https://doi.org/10.1016/j.nima.2024.169841
• Wegert, L., Schreiner, S., Rauch, C., Albertazzi, B., Bleuel, P., Fröjdh, E.,... Funk, S. (2024). Demonstrating grating-based phase-contrast imaging of laser-driven shock waves. Matter and Radiation at Extremes, 9(4). https://doi.org/10.1063/5.0200440
• White, T.G., Poole, H., McBride, E.E., Oliver, M., Descamps, A., Fletcher, L.B.,... Gregori, G. (2024). Speed of sound in methane under conditions of planetary interiors. Physical Review Research, 6(2). https://doi.org/10.1103/PhysRevResearch.6.L022029
• Zmija, A., Vogel, N., Wohlleben, F., Anton, G., Zink, A., & Funk, S. (2024). First intensity interferometry measurements with the H.E.S.S. telescopes. Monthly Notices of the Royal Astronomical Society, 527(4), 12243-12252. https://doi.org/10.1093/mnras/stad3676

2023

• Aharonian, F., Ait Benkhali, F., Aschersleben, J., Ashkar, H., Backes, M., Barbosa Martins, V.,... Zywucka, N. (2023). Detection of extended γ -ray emission around the Geminga pulsar with H.E.S.S. Astronomy & Astrophysics, 673. https://doi.org/10.1051/0004-6361/202245776
• Aharonian, F., Ait Benkhali, F., Aschersleben, J., Ashkar, H., Backes, M., Barbosa Martins, V.,... Żywucka, N. (2023). HESS J1809-193: A halo of escaped electrons around a pulsar wind nebula? Astronomy & Astrophysics, 672. https://doi.org/10.1051/0004-6361/202245459
• Aharonian, F., Aschersleben, J., Backes, M., Martins, V.B., Batzofin, R., Becherini, Y.,... Zywucka, N. (2023). Constraints on the Intergalactic Magnetic Field Using Fermi-LAT and H.E.S.S. Blazar Observations. Astrophysical Journal Letters, 950(2), L16. https://doi.org/10.3847/2041-8213/acd777
• Donath, A., Terrier, R., Remy, Q., Sinha, A., Nigro, C., Pintore, F.,... Zanin, R. (2023). Gammapy: A Python package for gamma-ray astronomy. Astronomy & Astrophysics, 678. https://doi.org/10.1051/0004-6361/202346488
• Glombitza, J., Joshi, V., Bruno, B., & Funk, S. (2023). Application of graph networks to background rejection in Imaging Air Cherenkov Telescopes. Journal of Cosmology and Astroparticle Physics, 2023(11). https://doi.org/10.1088/1475-7516/2023/11/008
• Schreiner, S., Rauch, C., Akstaller, B., Bleuel, P., Frojdh, E., Martynenko, A.S.,... Funk, S. (2023). Erratum: Publisher's Note: "Electromagnetic pulse protective shielding for digital x-ray detectors" [Rev. Sci. Instrum. 94, 075106 (2023) (The Review of scientific instruments (2023) 94 7 PII: 089902). Review of Scientific Instruments, 94(8). https://doi.org/10.1063/5.0170081
• Schreiner, S., Rauch, C., Akstaller, B., Bleuel, P., Fröjdh, E., Martynenko, A.S.,... Funk, S. (2023). Electromagnetic pulse protective shielding for digital x-ray detectors. Review of Scientific Instruments, 94(7). https://doi.org/10.1063/5.0160120

2022

• Abdalla, H., Aharonian, F., Benkhali, F.A., Angüner, E.O., Armand, C., Ashkar, H.,... Zywucka, N. (2022). Search for Dark Matter Annihilation Signals in the H.E.S.S. Inner Galaxy Survey. Physical Review Letters, 129(11). https://doi.org/10.1103/PhysRevLett.129.111101
• Abdollahi, S., Acero, F., Baldini, L., Ballet, J., Bastieri, D., Bellazzini, R.,... Zaharijas, G. (2022). Incremental Fermi Large Area Telescope Fourth Source Catalog. Astrophysical Journal Supplement Series, 260(2). https://doi.org/10.3847/1538-4365/ac6751
• Abe, H., Abe, S., Acciari, V.A., Aniello, T., Ansoldi, S., Antonelli, L.A.,... Sala, G. (2022). Gamma-ray observations of MAXI J1820+070 during the 2018 outburst. Monthly Notices of the Royal Astronomical Society, 517(4), 4736-4751. https://doi.org/10.1093/mnras/stac2686
• Addazi, A., Alvarez-Muniz, J., Alves Batista, R., Amelino-Camelia, G., Antonelli, V., Arzano, M.,... Zornoza, J.D. (2022). Quantum gravity phenomenology at the dawn of the multi-messenger era—A review. Progress in Particle and Nuclear Physics. https://doi.org/10.1016/j.ppnp.2022.103948
• Aharonian, F., Ashkar, H., Backes, M., Martins, V.B., Becherini, Y., Berge, D.,... Wong, G. (2022). A deep spectromorphological study of the γ -ray emission surrounding the young massive stellar cluster Westerlund 1. Astronomy & Astrophysics, 666. https://doi.org/10.1051/0004-6361/202244323
• Aharonian, F., Benkhali, F.A., Anguener, E.O., Ashkar, H., Backes, M., Baghmanyan, V.,... Żywucka, N. (2022). Time-resolved hadronic particle acceleration in the recurrent nova RS Ophiuchi. Science, 376(6588), 77-+. https://doi.org/10.1126/science.abn0567
• Aharonian, F., Benkhali, F.A., Angüner, E.O., Ashkar, H., Backes, M., Martins, V.B.,... Zywucka, N. (2022). Evidence for γ-ray emission from the remnant of Kepleras supernova based on deep H.E.S.S. observations. Astronomy & Astrophysics, 662. https://doi.org/10.1051/0004-6361/202243096
• Ajello, M., Atwood, W.B., Baldini, L., Ballet, J., Barbiellini, G., Bastieri, D.,... Zaharijas, G. (2022). A gamma-ray pulsar timing array constrains the nanohertz gravitational wave background. Science, 376(6592), 521-+. https://doi.org/10.1126/science.abm3231
• Ajello, M., Baldini, L., Ballet, J., Bastieri, D., Gonzalez, J.B., Bellazzini, R.,... Zaharijas, G. (2022). The Fourth Catalog of Active Galactic Nuclei Detected by the Fermi Large Area Telescope: Data Release 3. Astrophysical Journal Supplement Series, 263(2). https://doi.org/10.3847/1538-4365
• Akstaller, B., Schreiner, S., Dietrich, L., Rauch, C., Schuster, M., Ludwig, V.,... Funk, S. (2022). X-ray Dark-Field Imaging for Improved Contrast in Historical Handwritten Literature. Journal of Imaging, 8(9). https://doi.org/10.3390/jimaging8090226
• Albert, A., Alfaro, R., Arteaga-Velazquez, J.C., Ayala Solares, H.A., Babu, R., Belmont-Moreno, E.,... Funk, S. (2022). Validation of standardized data formats and tools for ground-level particle-based gamma-ray observatories. Astronomy & Astrophysics, 667. https://doi.org/10.1051/0004-6361/202243527
• Alnussirat, S., Altomare, C., Bose, R.G., Braun, D., Buckley, J.H., Buhler, J.D.,... Zober, W.V. (2022). The Advanced Particle-astrophysics Telescope: Simulation of the Instrument Performance for Gamma-Ray Detection. In Proceedings of Science. Berlin, DE: Sissa Medialab Srl.
• Bi, B., Barcelo, M., Bauer, C., Benkhali, F.A., Catalano, J., Diebold, S.,... Werner, F. (2022). Performance of the New FlashCam-based Camera in the 28 m Telescope of H.E.S.S. In Proceedings of 37th International Cosmic Ray Conference — PoS(ICRC2021) (pp. 743). Virtual, Berlin, DE: Sissa Medialab Srl.
• Buckley, J.H., Alnussirat, S., Altomare, C., Bose, R.G., Braun, D., Buhler, J.D.,... Zober, W.V. (2022). The Advanced Particle-astrophysics Telescope (APT) Project Status. In Proceedings of Science. Virtual, Berlin, DEU: Sissa Medialab Srl.
• Chibueze, J.O., Caleb, M., Spitler, L., Ashkar, H., Schüssler, F., Stappers, B.W.,... Żywucka, N. (2022). A MeerKAT, e-MERLIN, HESS, and Swift search for persistent and transient emission associated with three localized FRBs. Monthly Notices of the Royal Astronomical Society, 515(1), 1365-1379. https://doi.org/10.1093/mnras/stac1601
• Grinberg, V., Jahnke, K., Lindenstruth, V., Markou, C., Funk, S., Katz, U., & Roth, M. (2022). Sustainability in astroparticle physics. In Proceedings of 37th International Cosmic Ray Conference — PoS(ICRC2021) (pp. 1401). Virtual, Berlin, DE: Sissa Medialab Srl.
• Hughes, Z., Alnussirat, S., Altomare, C., Bose, R.G., Braun, D., Buckley, J.H.,... Zober, W.V. (2022). Characterization of a prototype imaging calorimeter for the Advanced Particle-astrophysics Telescope from an Antarctic balloon flight and CERN beam test. In Proceedings of Science. Virtual, Berlin, DEU: Sissa Medialab Srl.
• Karl, S., Zmija, A., Richter, S., Vogel, N., Malyshev, D., Zink, A.,... Funk, S. (2022). Comparing different approaches for stellar intensity interferometry. Monthly Notices of the Royal Astronomical Society, 512(2), 1722-1729. https://doi.org/10.1093/mnras/stac489
• Ramey, E., Larm, R., Chungata, C.B., Alnussirat, S., Altomare, C., Bose, R.G.,... Zober, W.V. (2022). A Fast GRB Source Localization Pipeline for the Advanced Particle-astrophysics Telescope. In Proceedings of Science. Virtual: Sissa Medialab Srl.
• Wolf, A., Akstaller, B., Cipiccia, S., Flenner, S., Hagemann, J., Ludwig, V.,... Funk, S. (2022). Single-exposure X-ray phase imaging microscopy with a grating interferometer. Journal of Synchrotron Radiation, 29, 794-806. https://doi.org/10.1107/S160057752200193X
• Zmija, A., Vogel, N., Anton, G., Malyshev, D., Michel, T., Zink, A., & Funk, S. (2022). Optical intensity interferometry lab tests in preparation of stellar diameter measurements at IACTs at GHz photon rates. Monthly Notices of the Royal Astronomical Society, 509(3), 3113-3118. https://doi.org/10.1093/mnras/stab3058

2021

• Abdalla, H., Aharonian, F., Benkhali, F.A., Anguner, E.O., Arcaro, C., Armand, C.,... Acero, F. (2021). Evidence of 100 TeV gamma-ray emission from HESS J1702-420: A new PeVatron candidate. Astronomy & Astrophysics, 653, A152. https://doi.org/10.1051/0004-6361/202140962
• Abdalla, H., Aharonian, F., Benkhali, F.A., Anguner, E.O., Ashkar, H., Backes, M.,... Zouari, S. (2021). HESS Follow-up Observations of Binary Black Hole Coalescence Events during the Second and Third Gravitational-wave Observing Runs of Advanced LIGO and Advanced Virgo. Astrophysical Journal, 923(1). https://doi.org/10.3847/1538-4357/ac2e04
• Abdalla, H., Aharonian, F., Mitchell, A., Benkhali, F.A., Anguner, E.O., Arcaro, C.,... Żywucka, N. (2021). LMC N132D: A mature supernova remnant with a power-law gamma-ray spectrum extending beyond 8 TeV. Astronomy & Astrophysics, 655. https://doi.org/10.1051/0004-6361/202141486
• Abdalla, H., Aharonian, F., Mitchell, A., Spencer, S., Benkhali, F.A., Anguner, E.O.,... Żywucka, N. (2021). Searching for TeV Gamma-Ray Emission from SGR 1935+2154 during Its 2020 X-Ray and Radio Bursting Phase. Astrophysical Journal, 919(2). https://doi.org/10.3847/1538-4357/ac0fe1
• Abdalla, H., Mitchell, A., Aharonian, F., Spencer, S., Benkhali, F.A., Anguner, E.O.,... Zhou, H. (2021). TeV Emission of Galactic Plane Sources with HAWC and HESS. Astrophysical Journal, 917(1). https://doi.org/10.3847/1538-4357/abf64b
• Abdalla, H., Spencer, S., Aharonian, F., Ait Benkhali, F., Anguner, E.O., Arcaro, C.,... Żywucka, N. (2021). Search for Dark Matter Annihilation Signals from Unidentified Fermi-LAT Objects with HESS. Astrophysical Journal, 918(1). https://doi.org/10.3847/1538-4357/abff59
• Adams, C.B., Alfaro, R., Ambrosi, G., Ambrosio, M., Aramo, C., Arlen, T.,... Zink, A. (2021). Detection of the Crab Nebula with the 9.7 m prototype Schwarzschild-Couder telescope. Astroparticle Physics, 128. https://doi.org/10.1016/j.astropartphys.2021.102562
• Adams, C.B., Benbow, W., Brill, A., Buckley, J.H., Capasso, M., Chromey, A.J.,... Torres, D.F. (2021). Observation of the Gamma-Ray Binary HESS J0632+057 with the HESS, MAGIC, and VERITAS Telescopes. Astrophysical Journal, 923(2). https://doi.org/10.3847/1538-4357/ac29b7
• Ajello, M., Atwood, W.B., Axelsson, M., Baldini, L., Barbiellini, G., Baring, M.G.,... Zaharijas, G. (2021). High-energy emission from a magnetar giant flare in the Sculptor galaxy. Nature Astronomy. https://doi.org/10.1038/s41550-020-01287-8
• Ajello, M., Baldini, L., Ballet, J., Barbiellini, G., Bastieri, D., Bellazzini, R.,... Zrake, J. (2021). Gamma Rays from Fast Black-hole Winds. Astrophysical Journal, 921(2). https://doi.org/10.3847/1538-4357/ac1bb2
• Ajello, M., Baldini, L., Bastieri, D., Bellazzini, R., Berretta, A., Bissaldi, E.,... Zaharijas, G. (2021). First Fermi-LAT Solar Flare Catalog. Astrophysical Journal Supplement Series, 252(2). https://doi.org/10.3847/1538-4365/abd32e
• Ajello, M., Baldini, L., Bastieri, D., Bellazzini, R., Berretta, A., Bissaldi, E.,... Zaharijas, G. (2021). Erratum: First fermi-LAT solar flare catalog (Astrophysical Journal, Supplement Series (2021) 252 (13) DOI: 10.3847/1538-4365/abd32e). Astrophysical Journal Supplement Series, 256(1). https://doi.org/10.3847/1538-4365/ac2155
• Akstaller, B., Schreiner, S., Hofmann, F., Meyer, P., Neumayer, P., Schuster, M.,... Funk, S. (2021). Single-shot grating-based phase-contrast imaging of a micrometer sample at a laser-driven x-ray backlighter source. Journal of Instrumentation, 16(6). https://doi.org/10.1088/1748-0221/16/06/P06021
• Amans, J.-P., Berge, D., Bonanno, G., Bose, R., Brown, A.M., Buckley, J.H.,... Zech, A. (2021). The Small-Sized Telescopes for the Southern Site of the Cherenkov Telescope Array. In Proceedings of 37th International Cosmic Ray Conference - PoS(ICRC2021) (pp. 728). Berlin, online, DE: Trieste: SISSA.
• Baldini, L., Ballet, J., Bastieri, D., Becerra Gonzalez, J., Bellazzini, R., Berretta, A.,... Zaharijas, G. (2021). Catalog of Long-term Transient Sources in the First 10 yr of Fermi-LAT Data. Astrophysical Journal Supplement Series, 256(1). https://doi.org/10.3847/1538-4365/ac072a
• Koddenberg, T., Greving, I., Hagemann, J., Flenner, S., Krause, A., Laipple, D.,... Nopens, M. (2021). Three-dimensional imaging of xylem at cell wall level through near field nano holotomography. Scientific Reports, 11(1). https://doi.org/10.1038/s41598-021-83885-8
• Schreiner, S., Akstaller, B., Dietrich, L., Meyer, P., Neumayer, P., Schuster, M.,... Funk, S. (2021). Noise reduction for single-shot grating-based phase-contrast imaging at an x-ray backlighter. Journal of Imaging, 7(9). https://doi.org/10.3390/jimaging7090178
• Taylor, A.M., Aharonian, F., Romoli, C., Khangulyan, D., Ruiz-Velasco, E., Schüssler, F.,... Page, K. (2021). Revealing x-ray and gamma ray temporal and spectral similarities in the GRB 190829A afterglow. Science, 372(6546), 1081-1085. https://doi.org/10.1126/science.abe8560

2020

• Abdalla, H., Adam, R., Aharonian, F., Benkhali, F.A., Anguner, E.O., Arakawa, M.,... Rodrigues, X. (2020). Probing the Magnetic Field in the GW170817 Outflow Using HESS Observations. Astrophysical Journal Letters, 894(2). https://doi.org/10.3847/2041-8213/ab8b59
• Abdalla, H., Adam, R., Aharonian, F., Benkhali, F.A., Anguner, E.O., Arakawa, M.,... Cerruti, M. (2020). Very high energy gamma-ray emission from two blazars of unknown redshift and upper limits on their distance. Monthly Notices of the Royal Astronomical Society, 494(4), 5590-5602. https://doi.org/10.1093/mnras/staa999
• Abdalla, H., Adam, R., Aharonian, F., Benkhali, F.A., Anguner, E.O., Arakawa, M.,... Żywucka, N. (2020). Detection of very-high-energy γ -ray emission from the colliding wind binary η Car with H.E.S.S. Astronomy & Astrophysics, 635. https://doi.org/10.1051/0004-6361/201936761
• Abdalla, H., Adam, R., Aharonian, F., Benkhali, F.A., Anguner, E.O., Arakawa, M.,... Smith, P.S. (2020). HESS detection of very high-energy gamma-ray emission from the quasar PKS 0736+017. Astronomy & Astrophysics, 633. https://doi.org/10.1051/0004-6361/201935906
• Abdalla, H., Adam, R., Aharonian, F., Benkhali, F.A., Anguner, E.O., Arakawa, M.,... Bordas, P. (2020). HESS and Fermi-LAT observations of PSR B1259-63/LS 2883 during its 2014 and 2017 periastron passages. Astronomy & Astrophysics, 633. https://doi.org/10.1051/0004-6361/201936621
• Abdalla, H., Adam, R., Mitchell, A., Aharonian, F., Benkhali, F.A., Anguner, E.O.,... Tagliaferri, G. (2020). Simultaneous observations of the blazar PKS 2155-304 from ultra-violet to TeV energies. Astronomy & Astrophysics, 639. https://doi.org/10.1051/0004-6361/201936900
• Abdallah, H., Adam, R., Aharonian, F., Benkhali, F.A., Anguner, E.O., Arakawa, M.,... Żywucka, N. (2020). Search for dark matter signals towards a selection of recently detected DES dwarf galaxy satellites of the Milky Way with HESS. Physical Review D - Particles, Fields, Gravitation and Cosmology, 102(6). https://doi.org/10.1103/PhysRevD.102.062001
• Abdollahi, S., Acero, F., Ackermann, M., Ajello, M., Atwood, W.B., Axelsson, M.,... Zaharijas, G. (2020). Fermi Large Area Telescope Fourth Source Catalog. Astrophysical Journal Supplement Series, 247(1). https://doi.org/10.3847/1538-4365/ab6bcb
• Ajello, M., Angioni, R., Axelsson, M., Ballet, J., Barbiellini, G., Bastieri, D.,... Yassine, M. (2020). The Fourth Catalog of Active Galactic Nuclei Detected by the Fermi Large Area Telescope. Astrophysical Journal, 892(2). https://doi.org/10.3847/1538-4357/ab791e
• Ajello, M., Arimoto, M., Axelsson, M., Baldini, L., Barbiellini, G., Bastieri, D.,... De Pasquale, M. (2020). Fermi and Swift Observations of GRB 190114C: Tracing the Evolution of High-energy Emission from Prompt to Afterglow. Astrophysical Journal, 890(1). https://doi.org/10.3847/1538-4357/ab5b05
• Fiuza, F., Swadling, G.F., Grassi, A., Rinderknecht, H.G., Higginson, D.P., Ryutov, D.D.,... Park, H.-S. (2020). Electron acceleration in laboratory-produced turbulent collisionless shocks. Nature Physics. https://doi.org/10.1038/s41567-020-0919-4
• Principe, G., Mitchell, A.M.W., Caroff, S., Hinton, J.A., Parsons, R.D., & Funk, S. (2020). Energy dependent morphology of the pulsar wind nebula HESSJ1825-137 with Fermi-LAT. Astronomy & Astrophysics, 640. https://doi.org/10.1051/0004-6361/202038375
• Seifert, M., Weule, M., Cipiccia, S., Flenner, S., Hagemann, J., Ludwig, V.,... Akstaller, B. (2020). Evaluation of the Weighted Mean X-ray Energy for an Imaging System Via Propagation-Based Phase-Contrast Imaging. Journal of Imaging, 6(7). https://doi.org/10.3390/jimaging6070063
• Wolf, A., Schuster, M., Ludwig, V., Anton, G., & Funk, S. (2020). Maximum likelihood reconstruction for grating-based X-ray microscopy. Optics Express, 28(9), 13553-13568. https://doi.org/10.1364/OE.380940
• Zmija, A., Deiml, P., Malyshev, D., Zink, A., Anton, G., Michel, T., & Funk, S. (2020). LED as laboratory test source for astronomical intensity interferometry. Optics Express, 28(4), 5248-5256. https://doi.org/10.1364/OE.28.005248