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JF

J. P. U. Fynbo

0000-0002-8149-8298
astro-ph.GAastro-ph.HEastro-ph.COastro-phastro-ph.IMastro-ph.SRastro-ph.EPgr-qcDustDwarfism

On Valency

published · living versions
W_9ak4b92f·v1 · currentpublished
The Afterglows of Swift-era Gamma-Ray Bursts. I. Comparing pre-Swift and Swift era Long/Soft (Type II) GRB Optical Afterglows
with D. A. Kann, S. Klose, B. Zhang, D. Malesani +71
1 version
W_k9dqfvdz·v1published
The brightest GRB ever detected: GRB 221009A as a highly luminous event at z = 0.151
W_autxus3w·v1published
The first JWST spectrum of a GRB afterglow: No bright supernova in observations of the brightest GRB of all time, GRB 221009A
W_fur4sf74·v1published
A Kilonova Following a Long-Duration Gamma-Ray Burst at 350 Mpc
W_4n5dfj43·v1published
The COSMOS2015 Catalog: Exploring the 1<z<6 Universe with half a million galaxies
W_s5mxzxu6·v1published
A Population of Massive, Luminous Galaxies Hosting Heavily Dust-Obscured Gamma-Ray Bursts: Implications for the Use of GRBs as Tracers of Cosmic Star Formation

Preprints & journals

421 papers in the corpus · 1997–2026
Extreme outflow velocities and weak UV emission lines indicate quasars shedding their dust cocoons2607.01330v1 · Guozhen Ma, Stefan J. Geier, Johan P. U. Fynbo et al.2026 · 0 citationsarXiv
JWST spectroscopy of galaxies at z>10z>10: Damped Lyα\alpha absorbers reveal efficient star formation and hidden redshift biases2606.30787v1 · Kasper E. Heintz, Clara L. Pollock, Joris Witstok et al.2026 · 0 citationsarXiv
X-rays breaking out of pre-explosion ejecta mark a supernova's first light2606.10014v2 · Weimin Yuan, Qiu-Ju Huang, Jin-Ping Zhu et al.2026 · 0 citationsarXiv
GRB 260310A / SN 2026fgk: A Multi-Wavelength Study of a Nearby Underluminous Long GRB and SN with a Complex Afterglow2605.26091v2 · Ramandeep Gill, Rosa L. Becerra, Antonio de Ugarte Postigo et al.2026 · 0 citationsMon Not R Astron Soc (2026)
GRB 210704A: A Luminous Fast Blue Transient in a GRB Afterglow at z=2.34z = 2.342604.14343v1 · Danielle L. A. Pieterse, Andrew J. Levan, Maria E. Ravasio et al.2026 · 1 citationarXiv
Long-term monitoring of WASP-19 b: Signs of apsidal precession and molecular signatures2603.12395v1 · A. R. Rajkumar, A. Bayo, P. Peng et al.2026 · 0 citationsarXiv
Characterising Lyα\alpha damping wings at the onset of reionisation: Evidence for highly efficient star formation driven by dense, neutral gas in UV-bright galaxies at z>9z>92602.11783v1 · Clara L. Pollock, Kasper E. Heintz, Joris Witstok et al.2026 · 0 citationsarXiv
Direct pathway to the Early Supermassive Black Holes: A Red Super-Eddington Quasar in a Massive Starburst Host at z=7.2z=7.22602.12325v2 · Qinyue Fei, Seiji Fujimoto, Gabriel Brammer et al.2026 · 0 citationsarXiv
EP250827b/SN 2025wkm: An X-ray Flash-Supernova Powered by a Central Engine and Circumstellar Interaction2512.10239v3 · Gokul P. Srinivasaragavan, Dongyue Li, Xander J. Hall et al.2025 · 2 citationsarXiv
Spectroscopic characterization of a remarkable temporally varying, triple-lensed quasar at z=2.672512.10811v3 · Charlie Lind-Thomsen, Kasper E. Heintz, Albert Sneppen et al.2025 · 0 citationsarXiv
KDP as a thermal blocking filter -- Deep near IR observations with a warm narrow band filter2511.11806v3 · J. K. M. Viuho, A. A. Djupvik, A. N. S\orensen et al.2025 · 0 citationsarXiv
The Type Ia Supernova 2021hem: A 2003fg-like Event in an Apparently Hostless Environment2511.07529v2 · Subhash Bose, M.D. Stritzinger, A. Malmgaard et al.2025 · 2 citationsarXiv
On the Dusty Proximate Damped Lyman-{\alpha} System toward Q2310-3358 at z = 2.402510.24340v2 · S. Han (1, J.-K. Krogager (3, C. Ledoux et al.2025 · 1 citationA&A 705, A123 (2026)
Phase-resolved optical spectroscopy of the rapidly varying white dwarf ZTF 1851+17142510.06331v1 · C. C. Pedersen, M. R. M. Knudsen, K. Valeckas et al.2025 · 0 citationsarXiv
Neutral hydrogen in and around galaxies during the Epoch of Reionization2510.01315v1 · V. Gelli, C. Mason, A. Pallottini et al.2025 · 0 citationsarXiv
Discovery and Analysis of Afterglows from Poorly Localised GRBs with the Gravitational-wave Optical Transient Observer (GOTO) All-sky Survey2509.09827v2 · Amit Kumar, B. P. Gompertz, B. Schneider et al.2025 · 2 citationsMNRAS, Volume 544, Issue 2, December 2025, Pages 1541-1587
A 50 s quasi-periodic oscillation in the early X-ray afterglow of GRB 220711B2508.00278v1 · H. Gao, W.-H. Lei, S. Xiao et al.2025 · 4 citationsarXiv
SVOM GRB 250314A at z ≃\simeq 7.3: an exploding star in the era of reionization2507.18783v1 · B. Cordier, J. Y. Wei, N. R. Tanvir et al.2025 · 0 citationsarXiv
GRB 241105A: A test case for GRB classification and rapid r-process nucleosynthesis channels2507.15940v2 · Dimple, B. P. Gompertz, A. J. Levan et al.2025 · 5 citationsMon Not R Astron Soc (2025) 548-571
Einstein Probe Discovery of EP J182730.0-095633: A New Black Hole X-ray Binary Candidate in Faint Outburst?2507.12876v1 · Huaqing Cheng, Qingchang Zhao, L. Tao et al.2025 · 5 citationsarXiv
A large, chemically enriched, neutral gas reservoir in a galaxy at z = 6.7822506.04340v1 · A. Saccardi, S. D. Vergani, L. Izzo et al.2025 · 1 citationarXiv
The near infrared airglow continuum conundrum. Constraints for ground-based faint object spectroscopy2506.02102v1 · J. K. M. Viuho J. P. U. Fynbo, M. I. Andersen, Jagtvej 155A et al.2025 · 1 citationA&A 699, A241 (2025)
First IFU observations of two GRB host galaxies at cosmic noon with JWST/NIRSpec2505.21643v1 · B. Topcu, P. Schady, S. Wuyts et al.2025 · 1 citationarXiv
EP241021a: a months-duration X-ray transient with luminous optical and radio emission2505.07665v2 · Shu Xinwen, Yang Lei, Yang Haonan et al.2025 · 19 citations2025, ApJ Letters, 990, L29
An extremely soft and weak fast X-ray transient associated with a luminous supernova2504.17034v1 · W.-X. Li, Z.-P. Zhu, X.-Z. Zou et al.2025 · 3 citationsarXiv
PyLongslit: a simple manual Python pipeline for processing of astronomical long-slit spectra recorded with CCD detectors2504.00973v1 · Kostas Valeckas, Johan Peter Uldall Fynbo, Jens-Kristian Krogager et al.2025 · 0 citationsarXiv
EP240801a/XRF 240801B: An X-ray Flash Detected by the Einstein Probe and Implications of its Multiband Afterglow2503.04306v1 · Shuai-Qing Jiang, Dong Xu, Agnes P. C. van Hoof et al.2025 · 18 citationsarXiv
No [CII] or dust detection in two Little Red Dots at zspec_{\rm spec} > 72503.01945v2 · Mengyuan Xiao, Pascal A. Oesch, Longji Bing et al.2025 · 36 citationsA&A 700, A231 (2025)
The bright long-lived Type II SN 2021irp powered by aspherical circumstellar material interaction (I): Revealing the energy source with photometry and spectroscopy2501.13619v1 · T. M. Reynolds, T. Nagao, R. Gottumukkala et al.2025 · 6 citationsA&A 702, A212 (2025)
GRB 241030A: a prompt thermal X-ray emission component and diverse origin of the very early UVOT WHITE and U band emission2501.04906v1 · Qiu-Li Wang, Hao Zhou, Yun Wang et al.2025 · 0 citationsarXiv
Revisiting the Intergalactic Medium Around GRB 130606A and Constraints on the Epoch of Reionization2412.09732v2 · H.M. Fausey, A.J. van der Horst, N.R. Tanvir et al.2024 · 3 citationsarXiv
Modelling of long gamma-ray burst host galaxies at cosmic noon from damped Lyman-{\alpha} absorption statistics2411.03818v1 · J.-K. Krogager, A. De Cia, K. E. Heintz et al.2024 · 4 citationsMNRAS 535, 561 (2024)
Einstein Probe discovery of EP240408a: a peculiar X-ray transient with an intermediate timescale2410.21617v1 · Wenda Zhang, Weimin Yuan, Zhixing Ling et al.2024 · 22 citationspublished in SCIENCE CHINA Physics, Mechanics & Astronomy(SCPMA) (2024)
GRB 211024B: an ultra-long GRB powered by magnetar2410.15162v2 · Shao-Yu Fu, Dong Xu, Wei-Hua Lei et al.2024 · 3 citationsarXiv
Coma composition and profiles of comet 12P/Pons-Brooks using long-slit spectroscopy2409.08133v1 · Lea Ferellec, Cyrielle Opitom, Abbie Donaldson et al.2024 · 12 citationsMNRAS 534 3 (2024) p1816-1826
ANDES, the high resolution spectrograph for the ELT: science goals, project overview and future developments2407.14601v1 · A. Marconi, M. Abreu, V. Adibekyan et al.2024 · 19 citationsarXiv
Triggering the Untriggered: The First Einstein Probe-Detected Gamma-Ray Burst 240219A and Its Implications2407.10156v2 · Yi-Han Iris Yin, Bin-Bin Zhang, Jun Yang et al.2024 · 37 citations2024, ApJL, 975, L27
Rapid Response Mode observations of GRB 160203A: Looking for fine-structure line variability at z=3.522406.18754v1 · G. Pugliese, A. Saccardi, V. D Elia et al.2024 · 1 citationA&A 690, A35 (2024)
Soft X-ray prompt emission from a high-redshift gamma-ray burst EP240315a2404.16425v1 · Y. Liu, H. Sun, D. Xu et al.2024 · 2 citationsarXiv
The JWST-PRIMAL Legacy Survey. A JWST/NIRSpec reference sample for the physical properties and Lyman-α\alpha absorption and emission of ∼500\sim 500 galaxies at z=5.5−13.4z=5.5-13.42404.02211v1 · K. E. Heintz, G. B. Brammer, D. Watson et al.2024 · 115 citationsA&A 693, A60 (2025)
Neutral Fraction of Hydrogen in the Intergalactic Medium Surrounding High-Redshift Gamma-Ray Burst 210905A2403.13126v2 · H.M. Fausey, S. Vejlgaard, A.J. van der Horst et al.2024 · 7 citationsarXiv
Absence of radio-bright dominance in a near-infrared selected sample of red quasars2401.02783v1 · S. Vejlgaard, J. P. U. Fynbo, K. E. Heintz et al.2024 · 3 citationsarXiv
A 12.4-day periodicity in a close binary system after a supernova.38200292 · Chen, Ping, Gal-Yam, Avishay, Sollerman, Jesper et al.2024 · 37 citationsNature. 2024;625(7994):253-258
A Hubble Space Telescope Search for r-Process Nucleosynthesis in Gamma-ray Burst Supernovae2312.04630v2 · J. C. Rastinejad (CIERA/Northwestern), W. Fong, A. J. Levan et al.2023 · 16 citationsarXiv
Deciphering the JWST spectrum of a 'little red dot' at z∼4.53z \sim 4.53: An obscured AGN and its star-forming host2312.03065v1 · Meghana Killi, Darach Watson, Gabriel Brammer et al.2023 · 92 citationsA&A 691, A52 (2024)
Galaxy Formation and Symbiotic Evolution with the Inter-Galactic Medium in the Age of ELT-ANDES2311.16803v2 · Valentina D'Odorico, James S. Bolton, Lise Christensen et al.2023 · 8 citationsarXiv
Optical monitoring of the Didymos-Dimorphos asteroid system with the Danish telescope around the DART mission impact2311.01982v1 · Agata Rożek, Colin Snodgrass, Uffe G. J\orgensen et al.2023 · 15 citationsarXiv
Heavy-element production in a compact object merger observed by JWST.37879361 · Levan, Andrew J, Gompertz, Benjamin P, Salafia, Om Sharan et al.2024 · 255 citationsNature. 2024;626(8000):737-741
Comparing emission- and absorption-based gas-phase metallicities in GRB host galaxies at z=2−4z=2-4 using JWST2310.15967v3 · P. Schady, R. M. Yates, L. Christensen et al.2023 · 8 citationsarXiv
Dust depletion of of metals from local to distant galaxies II: Cosmic dust-to-metal ratio and dust composition2310.07709v2 · Christina Konstantopoulou, Annalisa De Cia, C'edric Ledoux et al.2023 · 29 citationsA&A 681, A64 (2024)
Career total: at least 1211 works. 421 are in this corpus.Showing the 50 most recent.

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