Felix Ryde
PROFESSOR
Details
Researcher
About me
- Citation ranking at Research.com
- Recipient of the 2016 Göran Gustafsson Prize in Physics (KVA)
- Vice-chair of RÅG-B at the Swedish Research Council (VR)
- Vice-chair of the Faculty College at the school of Engineering Science at KTH (SCI)
- Member of the National Committee for Astronomy (KVA)
- Member of the Svenska rymdforskares samarbetsgrupp (SRS) panel
- Member of SCI strategiska rådet
- Member of SCI ledningsråd
- Member of the steering group of the OKC
- Portrait film (KTH)
Recent Papers:
- Samuelsson & Ryde 2023, "Observational characteristics of radiation-mediated shocks in photospheric gamma-ray burst emission", ApJ, submitted
- Li, Wang, Ryde et al. 2023, "A Cosmological Fireball with Sixteen-Percent Gamma-Ray Radiative Efficiency", ApJ, 944, 57
- Dereli-Bégué, Pe'er, Ryde et al. 2022,"A wind environment and Lorentz factors of tens explain gamma-ray bursts X-ray plateau", Nature communication, 13, 5611:Blogg post
- Ryde, Iyyani, Ahlgren et al. 2022, "Onset of particle acceleration during the prompt phase in gamma-ray bursts as revealed by synchrotron emission in GRB160821A", ApJL, 932, L15
- Samuelsson, Lundman, & Ryde 2022, "An efficient method for fitting radiation-mediated shocks to gamma-ray burst data: The Kompaneets RMS approximation", ApJ, 925, 65
- Li, Ryde, Pe'er, Yu & Acuner 2021, "Bayesian Time-Resolved Spectroscopy of Multi-Pulsed GRBs: Variations of Emission Properties amongst Pulses", ApJS, 254, 35
- Abarr et al. 2021,"XL-Calibur – a second-generation balloon-borne hard X-ray polarimetry mission", Astropart. Phys., 126, 102529
- Samuelsson, Bégué, Ryde, Pe'er & Murase 2020, "Constraining Low-luminosity Gamma-Ray Bursts as Ultra-high-energy Cosmic Ray Sources Using GRB 060218 as a Proxy", ApJ, 902, 148: AAS Youtube video
- Acuner, Ryde, Pe'er, Mortlock & Ahlgren 2020, "The Fraction of Gamma-ray Bursts with an Observed Photospheric Emission Episode", ApJ, 893,128
- Dereli, Pe'er & Ryde 2020, "Classification of Photospheric Emission in Short GRBs", ApJ, 897, 154
- Ajello et al. 2020 "Fermi and Swift Observations of GRB 190114C: Tracing the Evolution of High-Energy Emission from Prompt to Afterglow", ApJ,890, 9
- Yu, Dereli & Ryde 2019, "Bayesian Time-Resolved Spectroscopy of GRB Pulses", ApJS, 886, 20
- Sharma et al. 2019, "Time varying polarized gamma-rays from GRB 160821A: evidence for ordered magnetic fields", ApJL, 882, L10
- Acuner, Ryde & Yu, 2019, "Non-dissipative photospheres in GRBs: spectral appearance in the Fermi/GBM catalogue", MNRAS, 487, 5508
- Ahlgren et al., 2019b, "Investigating Subphotospheric Dissipation in Gamma-Ray Bursts Using Joint Fermi─Swift Observations", ApJ, 880, 76
- Ajello et al. 2019, "A Decade of Gamma-Ray Bursts Observed by Fermi-LAT: The Second GRB Catalog", ApJS, 878, 52
- Ryde et al. 2019, "On the α-intensity correlation in gamma-ray bursts: subphotospheric heating with varying entropy",MNRAS, 484, 1912R
- Ahlgren et al. 2019a, "Testing a model for subphotospheric dissipation in GRBs: fits to Fermi data constrain the dissipation scenario", MNRAS, 485, 474
- Samuelsson, Begue, Ryde & Pe'er 2019, "The Limited Contribution of Low- and High-luminosity Gamma-Ray Bursts to Ultra-high-energy Cosmic Rays", ApJ, 876, 93
- Pearce et al. 2019, "Science prospects for SPHiNX - A small satellite GRB polarimetry mission", Astropart. phys., 104, 54
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Press:
- 2018Fermi 10 years!
- 2016KVA Gustafsson prize in Physics
- 2016 Rektorsblog
- 2016KTH Gustafsson prize in Physics
- 2013 Fermi5 years!
- 2012 NatureNews and comments thermal emission in GRBs
- 2011 Einsteinsitter säkert
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Research group:
- Graduate students:
- Filip Samuelsson
- Post docs
- Vidushi Sharma
- Christoffer Lundman
- Former group members:
- David Yu, post doc → Lecturer at Hong Kong University
- Husne Dereli, post doc → post doc in Tel Aviv
- Rupal Basak, post doc → post doc in Bologna
- Zeynep Acuner, PhD → IT job in Turkey
- Liang Li, PhD → post doc in Rome
- J. Michael Burgess, post doc → post doc at MPE, Munchen
- Damien Bégué, post doc → post doc at MPE, Munchen
- Shabnam Iyyani, PhD → post doc in Pune, India
- Christoffer Lundman, PhD → post doc at Columbia, NY
- Elena Moretti, post doc → post doc at MPE, Munchen
- Tanja Nymark, post doc → Vetenskapens Hus
- Sinead McGlynn, post doc
- Magnus Axelsson, post doc → post doc Tokyo Tech
- Stefan Larsson (Falun University)
- Alberto Benedetti, PhD (Erasmus Mundus; La Sapienza)
- Damien Begue, PhD (Erasmus Mundus; La Sapienza)
Career History
Recipient of the 2016 Göran Gustafsson Prize in Physics
Professor, 2015, KTH Royal Institute of Technology
Director of the graduate studies in Physics, 2014 - 2017
Docent in Astronomy, 2005, University of Stockholm
Visiting Scholar, Penn State University, University Park, PA, 2005
Visiting Scholar, Rice University, Houston, TX, 2002
Post Doctoral Scholar, Stanford University, Stanford, CA, 2000-2002
Ph.D. in Astronomy, 2000, University of Stockholm
Civ. ing. in Engineering Physics, 1994, Lund Institute of Technology
Research Interests
Gamma-Ray Bursts: Radiative Processes; synchrotron, inverse Compton, thermal emission, Particle Acceleration; diffusion, radiative cooling, Spectral Evolution; empirical correlations, Pulse Profiles, Variability, Gamma-Ray Polarization
Observations: Swift, INTEGRAL, Fermi and PoGOLite
Active Galactic Nuclei: simultaneous observations radio and gamma-rays, X-rays, Seyfert 2 Galaxies, Spectroscopical Analysis, NGC 7172.
Galactic Black Hole Candidates: X/gamma-rays, Accretion, Non-Thermal Radiation, Cyg X-1.
Courses
Applied Modern Physics (SH1015), teacher | Course web
Astrophysics (SH2402), examiner, course responsible, teacher | Course web
Astrophysics, Advanced Course (SH2403), examiner, course responsible, teacher | Course web
Degree Project in Physics, Second Cycle (SH204X), examiner | Course web
Engineering Skills (SA1007), teacher | Course web
Introductory Astronomy for Engineers (SH1003), teacher | Course web
Physics, Project Course I (SI2801), examiner | Course web
Project Work in Physics (SI2800), examiner | Course web