Escape of Lyman radiation from galactic labyrinths



Monday, 7 April 2025
18:00                                        Welcome reception


Tuesday, 8 April 2025


09:00-09:30 Welcome by the Director of OAC and by the SOC
09:30-10:00
Anne Verhamme & Laura Pentericci: Introductory remarks

10:00-10:35 Pratika Dayal: tbd
10:35-11:00 Andrea Ferrara: The Beautiful Confusion. Super-early Galaxies seen by JWST



10:30-11:00 coffee break



Session I
Production of Lyman radiation

11:30-12:05 Ylva Götberg: tbd
12:05-12:25 Shyam Menon:  Efficient LyC leakage due to radiation-driven outflows in compact bursts
12:25-12:40 Göran Östlin: The massive star population of IZw18

12:40-13:00 Yumi Choi: Investigating LyC Production and Escape in Local Metal-Poor Dwarf Galaxies



Poster session


13:00-13:05 Seonwoo Kim: The Evolution of Lyman Alpha Width at the End of Reionization

13:05-13:10
Luca Costantin: Spatially resolved study of ionized gas kinematics of reionization-era analogs




15:00-15:20
Ricardo Amorín: Production and potential escape of Lyman radiation in Extreme Emission-Line Galaxies from DESI

15:20-15:30
Igor Zinchenko: Identifying candidates for low-metallicity Lyman radiation leakage in the DESI survey

15:30-15:40
Adam Enders:  ISM properties in and around candidate LCEs with nebular He II emission

15:40-15:50
Elena Marci-Boehncke: Wolf-Rayet Galaxies as LyC Leakers: Identifying Candidates among Star-Forming Dwarf Galaxies

15:50-16:00
Alejandro Lumbreras-Calle: Local Extreme Emission Line Galaxies in wide narrow band surveys: gateways to the early Universe

16:00-16:10
Antonio Giménez Alcázar:  Search and characterization of low-z analogs to reionization galaxies in J-PAS

16:10-16:30
José M. Vílchez: Ionization and Galaxy Properties of Distant HeII Emitters from Multiwavelength Spectrophotometry
16:30-17:00
coffee break
17:00-17:25
Alison Strom: Cosmic Change Agents: Studying Massive Stars at Cosmic Noon
17:25-17:45
Charlotte Simmonds: Unveiling the ionising properties of galaxies at the Epoch of Reionisation with JWST NIRCam

17:45-18:05
Michelle Jecmen: UV Slopes of the Faintest High-Redshift Galaxies with Glimpse

18:05-18:25
Ravi Jaiswar: On the model dependence of the ionizing photon production efficiency. What are we really measuring?

18:25-18:45 Mario Llerena: The ionizing photon production efficiency of star-forming galaxies at z~4-10
18:45-19:05 Karla Ziboney Arellano-Cordova: Chemical Abundances Inform LyC Escape Conditions at z>5




Wednesday, 9 April 2025

Session II Transport of Lyman radiation on subgalactic scales

09:00-09:35
Naveen Reddy: UV/Lya Attenuation and the Effect of Gas Covering Fraction on the Emergent Lya Emission of High-Redshift Galaxies

09:35-09:55
Valentin Mauerhofer: Probing Ionizing Photon Escape: ISM Absorption Lines and Dust Attenuation in SPHINX20

09:55-10:15
Silvia Almada Monter: The Windows and Walls of the Labyrinth: Decoding Lyman-alpha Radiation

10:15-10:35
Margaritis Chatzis: Illuminating the Escape from the Galactic Labyrinth Through X-rays

10:35-11:00
coffee break
11:00-11:20
Alexandra Le Reste: Reshaping the labyrinth: the impact of galaxy mergers on Lyman radiation escape
11:20-11:40
Fang-Ting Yuan: Merging Signatures in an Offset Lyman Continuum Emitter at Redshift 3.8
11:40-11:50
Archishman Khasnovis: Cold neutral gas in Green Pea galaxies
11:50-12:10
Omkar Suresh Bait: Probing the nature of Lyman continuum emitting and low-metallicity galaxies using radio observations

12:10-12:20
Antonio Arroyo Polonio: Tracing ionizing escape potential in IZw18

12:20-12:40
Cody A. Carr: Does Radiation or Supernovae Feedback Drive LyC Escape?

12:40-13:00 Thøger Emil Rivera-Thorsen:  The roles of radiative and mechanical feedback and interaction from NIRSpec IFU observations
13:00-13:20 Cristina Cabello: Mapping the ISM conditions of local analogs of primeval galaxies




14:50-15:15
Sophia Flury:  Clearing the Path to Cosmic Reionization: New Insights from HST and JWST

15:15-15:25
Kaelee S. Parker: Tracing the Escape of Ionizing Radiation with Neutral and Low-Ionization Metals

15:25-15:50
Eros Vanzella: Star Clusters as Key Agents of Cosmic Hydrogen Reionization
15:50-16:10
Soumil Maulick: Breaking the Mold: Dusty Giants as Lyman Continuum Leaking Sources in the Cosmic Noon

16:10-16:30
coffee break
16:30-16:50
Seok-Jun Chang: Lyα Radiative Transfer in Turbulent Medium
16:50-17:00
Tomokazu Kiyota: Comprehensive JWST+ALMA Study on the Extended Lya Emitters Himiko and CR7 at z~7
17:00-17:10
Ivan Nikolić: Inferring the position and size of individual HII regions using Lyman-alpha observations with JWST
17:10-17:20
Andrea Bolamperti:  Constraining the geometry of the gas surrounding a typical galaxy at z=3.4 with Lya polarization

17:20-17:40
Tamal Mukherjee: Probing galaxy kinematics and the epoch of reionization using Lyman-alpha emission





Thursday, 10 April 2025

Session II Transport of Lyman radiation on subgalactic scales (continued)

09:00-09:20
Ilias Goovaerts:  The escape of Lyman-α photons and the contribution of Lyman-alpha emitters to reionisation

09:20-09:30
Nicole Firestone: ODIN: Investigating the Star Formation Histories and Radiative Transfer of LAEs at Cosmic Noon

09:30-09:50
Aaron Smith: Tracing LyC and Lyα Radiation in High-Redshift Galaxies from the THESAN-ZOOM Simulations

09:50-10:10
Ana Paulino-Afonso: Exploring LAES morphology and pixel-by-pixel physical properties with JWST

10:10-10:20
Daniil Smirnov: Are Lyman-Alpha Halos different beyond z=6?

10:20-10:40
John Pharo: What Shapes the Distribution of Lyman Alpha Halos?

10:40-11:00
coffee break



Session III
Lyman photon escape in star-forming galaxies
11:00-11:35
Sara Mascia: A (not so) Complete Unknown: multiple predictors of Lyman Continuum escape in the early Universe

11:35-12:00
Rui Marques-Chaves: Lyman Continuum escape at cosmic noon: from typical galaxies to the most extreme starbursts

12:00-12:20
Lena Komarova:  Haro 11: The Spatially Resolved Lyman Continuum Sources

12:20-12:40 Amanda Stoffers: Probing Lyman Continuum Escape: Bayesian SED Modeling of Low-Redshift Analogues for High-Redshift Galaxies

12:40-13:00 Intae Jung: Probing Lyman-Continuum Escape in Low-Redshift Dwarf Galaxies with HST UV Observations

13:00-13:20 Gerhard Hensler: Lyman continuum escape from intergalactic star clusters




15:00-15:25
Floriane Leclerq: Tracing HI distribution and ionizing photon escape in star-forming galaxies across cosmic time

15:25-15:45
Michelle Berg: LyC Escape and IGM Tomography Using the 600-900Å Continuum of the Sunburst Arc

15:45-16:05
Yuchen Liu: The properties of Lyman Continuum candidates through combined spectroscopic and imaging observations
16:05-16:25
Suraj Dhiwar: Extreme UV emitting Lyman Continuum leakers at the Cosmic Noon

16:25-17:00
coffee break
17:00-17:20
Brian Siana: Verification of Claimed Lyman Continuum Detections at z~1

17:20-17:40
Tony Pahl: LyC detections at high redshift: precise escape fractions for individual leakers?

17:40-18:00
Emma Giovinazzo: Ionizing Photon Escape in the Epoch of Reionization: Insights from JWST NIRSpec observations

18:00-18:20
Shuairu Zhu: The Spectral Energy Distributions and Morphology of Lyman Continuum Leakers at High-z in the GOODS-S

18:20-18:40 Namrata Roy:  Lyman Continuum leakage from massive leaky starbursts: A different class of emitters?

18:40-19:00 Nimisha Kumari:  Properties of Lya and non-Lya emitters at the epoch of reionization





Friday, 11 April 2025

Session IV Lyman photon escape in AGN
09:00-09:35
Andrea Grazian: The escape fraction from galactic labyrinths of ionizing photons produced by high-z AGNs

09:35-09:55
Juan Antonio Fernández Ontiveros:  Little Red Dot Analogues at Low-redshift: A Window into AGN Ionisation at Cosmic Dawn

09:55-10:05
Rahna Payyasseri Thanduparackal: Extended Lyman-α emission in quasar environments at z > 2 detected with J-PAS narrow-band imaging

10:05-10:15
Silvia Carolina Rueda Vargas: The Ly-α nebulas around quasars as evidence of the effect of AGN outflows on the CGM

10:15-10:25
Jay González: Characterizing the extended Lyman-alpha emission around high-redshift massive galaxies

10:25-10:50 coffee break
10:50-11:10 Enrique Pérez-Montero: Tracing Ionizing Continuum Slopes and Excitation Bimodality in AGN through Mid-IR Diagnostics
11:10-11:20 Evgenia Koutsoumpou: Effects of cosmic rays on ionized gas in AGN and starburst galaxies



Session V
LAEs as probes of the IGM
11:20-11:40
Samuel Gagnon-Hartman: Probing the Physics of Lyman Alpha Escape using High-Redshift Lyman Alpha Emitters

11:40-11:50
Davide Tornotti:  Unveiling the cosmic web through Lyα emission: an ultra-deep observation with MUSE

11:50-12:10
Yuta Kageura:  Lyα Emission at z=5-14: Evolution of the Lyα Luminosity Function and a Late Sharp Reionization

12:10-12:20 Cristóbal Moya: A resolved Lyman-Alpha profile with doubly peaked emission at z~7

12:20-12:30 Siddhartha Gurung Lopez: Disentangling the galactic and intergalactic components in observed Lyman-alpha line profiles

12:30-12:40 Ana Sofia Uzsoy: Bayesian Component Separation for DESI LAE Automated Spectroscopic Redshifts & Photometric Targeting
12:40-13:00 Alessandra Venditti: Photons under the rug: hiding the ionizing photon surplus in the Cosmic Infrared Background



14:20-14:40 Hiroya Umeda: Probing Cosmic Reionization with JWST & Subaru: Lyα Damping Wing and Insights on LyC Leakers
14:40-15:00 Alexander Beckett: Searching for the galaxies that reionized the Universe: Lyman Continuum emitters at z > 3


Session VI
Current and future  observing facilities essential to the understanding  of Lyman photon escape

15:00-15:25
Rogier Windhorst: LyC studies from space in the next decades

15:25-15:50
Kanak Saha: Key results from the AstroSat UV Deep Field
15:50-16:15
Peter Weilbacher: Observing Lyman radiation in the blue optical with BlueMUSE

16:15-16:40 Roland Bacon: How WST, the Wide-Field Spectroscopic Telescope, could revolutionize the study of Lyman-alpha galaxies



16:40-17:00
coffee break



17:00-17:20
Göran Östlin: Closing remarks