We are pleased to announce that the conference "SKA Cosmic Dawn and Epoch of Reionization (CD/EoR) Science Team Meeting 2024" will take place on 17-19 July 2024 in Beijing, China, as hosted by the Tsinghua University.

This meeting will bring together community members in CD/EoR. Other than research talks, there will be discussions for the SKA Science Data Challenge (SDC) 3a that finished and the upcoming SKA SDC 3b, as well as a discussion on the EoR contribution to the upcoming SKA commissioning.

There is no registration fee. The deadline for registration, April 15, 2024, has passed. For late registration of attendance (but not for oral presentation) or for other inquires of details, please contact Ms. Liu, at jiaqiliu _at_ tsinghua _dot_ edu _dot_ cn.

All in-person participants need to show the passport (for international visitors) or Chinese ID card (for Chinese visitors) to enter any gates of Tsinghua campus during the dates that the LOC will register with the University. For this purpose, please provide your information through this link by June 20, 2024.

Wednesday, July 17, 2024: conference day 1 (full day)

Thursday, July 18, 2024: conference day 2 (afternoon)

Friday, July 19, 2024: conference day 3 (full day)

A detailed program can be found in this link (updated 20240716).

If you need to adjust the schedule, please contact Prof. Yidong Xu at xuyd_at_nao_dot_cas_dot_cn.

Poster size: 60 cm x 90 cm.

Updated 20240727: the talk slides and recorded videos are as follows.

====== Day 1 (Wed July 17, 2024) ======

9:00 - 9:30 Welcome and updates

Welcome & brief logistics (10 min) - Yi Mao (Tsinghua U.)

SKA status update (20 min) - Cathryn Trott (Curtin/SKAO-online): slides video

Session 1: Theory of CD/EoR. Chair: Yi Mao

9:30 - 9:45 Andrei Mesinger (In person), "Status and future of 21-cm cosmology during the first billion years": slides video

9:45 - 10:00 Kyungjin Ahn (In person), "A Science Case for the Full-sky Probe of the 21-cm Background: Dipole and Integrated Sachs-Wolfe Effect as a Global 21-cm Measurement": slides video

10:00 - 10:15 Bohdan Novosyadlyj (Recorded), "The redshifted 21-cm hydrogen line from Dark Ages and Cosmic Dawn: dependences on dark matter nature and first light": video

10:15 - 10:30 Yao Zhang (In person), "Unveiling the dark matter nature with reionization relics": slides video

Group Photo & Coffee Break

Session 2: Theory of CD/EoR (cont.). Chair: Andrei Mesinger

11:00 - 11:15 Bin Yue (In person), "The velocity acoustic oscillations on the 21 cm signal from the Cosmic Dawn": slides video

11:15 - 11:30 Qingbo Ma (In person), "Stellar population synthesis models and cosmic reionization": slides video

11:30 - 11:45 Di Wu (In person), "Gravitational lensing effects on ionized structures in the Epoch of Reionization": slides video

11:45 - 12:00 Leon Noble (Online), "Impact of the sources of Epoch of Reionization on the 21-cm bispectrum": video

Lunch break (buffet provided)

Session 3: Foreground models, Probes beyond 21 cm. Chair: Yidong Xu

14:00 - 14:15 Yanping Cong (In person), "An updated Ultra-long wavelength sky model with absorption effect" (No recording)

14:15 - 14:30 Shijiao Yin (In person), "Refining the Ideal Sky Model for CD/EoR Detection": slides video

14:30 - 14:45 Samuel Gagnon Hartman (Online), "Understanding the epoch of reionization with galaxy - SKA 21cm cross correlation": slides video

14:45 - 15:00 Ivelin Georgiev (Recorded), "Constraining cosmic reionisation by combining the kinetic Sunyaev-Zel'dovich effect and the 21 cm signal": video

15:00 - 15:15 James Davies (Online), "Multi-Wavelength Forward Modelling of the Epoch of Reionisation and Cosmic Dawn with Stochastic Halo Populations": video

Coffee Break

Session 4: Observational updates & Instrumental effects. Chair: Raul A. Monsalve

15:45 - 16:00 Florent Mertens (Online), "Recent Advances in the LOFAR-EoR and NenuFAR Cosmic Dawn Projects": slides video

16:00 - 16:15 Rashmi Sagar (Online), "Eavesdropping on the Epoch of Reionization: uGMRT Band-2 insights with ELAIS-N1 deep field": video

16:15 - 16:30 Samit Kumar Pal (Online), "Analysing the effect of calibration errors and instrumental noise on HI 21-cm maps from the EoR using the LCS": video

16:30 - 16:45 Aman Chokshi (Online), "The Necessity of Individually Validated Beam Models for an Interferometric Epoch of Reionization Detection": video

16:45 - 17:00 Chenxi Shan (In person), "An evaluation of source-blending impact on the calibration of SKA EoR experiments": slides video

Lightening talks. Chair: Raul A. Monsalve

17:05 - 17:10 Siyi Zhao (In person), "Constrain Primordial non-Gaussianity with the 21 cm Bispectrum from the Epoch of Reionization": slides video (0:00 - 3:45)

17:10 - 17:15 Chandra Shekhar Murmu (Online), "Impact of astrophysical scatter on the [H I] 21cm bispectrum": slides video (3:50 - 9:50)

17:15 - 17:20 Hemanth Potluri (Online), "Assessing the impact of lightcone effect on EoR 21-cm signal using percolation analysis": slides video (10:00 - 16:00)

17:20 - 17:25 Teppei Minoda (In person), "Effects on the reionization history from the primordial perturbations": slides video (16:30 - 23:00)

19:00 Conference Dinner at HUA'S RESTAURANT (Qing Hua Xi Road)

====== Day 2 (Thu July 18, 2024) ======

Morning: Outdoor free discussion

Session 5: Interpretation & Inference techniques. Chair: Kyungjin Ahn

15:00 - 15:15 Junsong Cang (In person), "Bayesian evidence analysis for EDGES sky data with Pop III radio galaxies": slides video

15:15 - 15:30 Sambit Giri (Online), "Improvements in the exploration of the cosmic dawn in the era of artificial intelligence": slides video

15:30 - 15:45 Ian Hothi (Online), "Applications of Wavelet Statistics to EoR Studies": video

15:45 - 16:00 Anshuman Acharya (Online), "New tools and simulations for detecting the Reionization Era Neutral Hydrogen 21-cm Signal": slides video

Coffee Break

Session 6: Inference techniques (cont.). Chair: Bin Yue

16:30 - 16:45 Caroline Heneka (Online), "Fast, robust and optimal inference for 21cm cosmology with the SKA": video

16:45 - 17:00 Thomas Binnie (In person), "Statistical summaries for Bayesian analysis in EoR Science": slides video

17:00 - 17:15 Sabrina Berger (Online), "Map based density field and parameter inference during reionization with the SKA": video

17:15 - 17:30 Daniela Breitman (Online), "A complete machine-learning-based pipeline for Bayesian inference with 21-cm Power Spectra": slides video

Lightening talks. Chair: Bin Yue

17:35 - 17:40 Sanjay Kumar Yadav (Online), "Constraining the EoR using the 21-cm signal power spectrum through BNNs and Bayesian inference": slides video

17:40 - 17:45 Anirban Chakraborty (Online), "Modelling the properties of star-forming galaxies at high redshifts": slides video (1:10 - 9:30)

17:45 - 17:50 Tong Su (In person), "AGN SED Modeling: Exploring the Influence of Active Galactic Nuclei on the Reionization in the Early Universe": slides video(10:00 - 14:50)

18:30 Light Dinner (buffet provided)

====== Day 3 (Fri July 19, 2024) ======

Session 7: Foreground effects & removal. Chair: Qingbo Ma

9:30 - 9:45 Le Zhang (In person), "21 cm signal recovery in SKA Data Challenge 3": slides video

9:45 - 10:00 Jiajun Zhang (In person), "ForkEoR: a new machine learning based cleaning and foreground removal method for CD/EoR imaging": slides video

10:00 - 10:15 Zhenghao Zhu (In person), "A point source catalogue update for SKA1-low simulation and Signal Separation Approach for the EoR signal": slides video

Coffee Break

Session 8: Observational strategies & Signal extraction. Chair: Hayato Shimabukuro

10:45 - 11:00 Yuan Shi (In person), "Influence of angular resolution on 21 cm forest observations": slides video

11:00 - 11:15 Anshuman Tripathi (In person), "Extracting the HI 21 cm signal from the ground-based observation using Artificial Neural Networks": slides video

11:15 - 11:30 Tianyang Liu (In person), "Detecting Cosmic 21 cm global signal using an improved polynomial fitting algorithm": slides video

11:30 - 11:45 Mengfan He (In person), "Influence of sources with a spectral peak in the detection of Cosmic Dawn and Epoch of Reionization": slides video

Lunch break (buffet provided)

Session 9: EoR-SDC discussions

14:00 - 15:00 SDC3a discussion led by Le Zhang: slides video

15:00 - 16:00 SDC3b discussion led by Andrei Mesinger: slides video

Coffee Break

Session 10: EoR-commissioning discussion & Summary

16:30 - 17:30 Commissioning discussion led by Abhirup Datta (Online): video

17:30 - 17:40 Summary by Yi Mao: slides video

The list of participants can be found in this link.

Here is the group photo.

The Conference will take place at Room E225, Physics Building inside the campus of Tsinghua University.

For Google Maps users, please use the coordinates "40.008056, 116.322083" to locate our venue (Physics Building). Further explanation: please do not locate our venue as "Department of Physics of Tsinghua University" -- this is the old location of the Physics Department. Our venue is the "Physics Building" -- the new building of the Physics Department and Astronomy Department. If you use Google Maps, this new building is not marked, but you can use its coordinates to locate it.

For Chinese participants, you can search its location in Gaode maps (see this link).

You can download a high-quality campus map in this link (however in Chinese).

Direction from recommended hotels:

From hotels not near the campus, you may print out the direction page in this link and show it to taxi drivers.

The Conference will provide online access to the registered online participants. Note that the access will be made through the VooV Meeting (for international connection) and Tencent Meeting (for Chinese). Please download VooV from this link and register for a user in advance. Meeting codes will be sent by email to the registered online participants. (Note that the LOC cannot provide the connection by Zoom because Zoom does not provide the service - even paid service - to Chinese individuals or groups.)

Ziqing Building Hotel: This hotel is just near the Southeast Gate of Tsinghua campus. See the room type and rate in the figure below. Note that this hotel is internal to Tsinghua. If you want the LOC to reserve a room for you, please fill out the request in this link by June 20, 2024.

Wenjin Hotel: This hotel is just near the South Gate of Tsinghua campus. This hotel is a luxury hotel and its rate is somehow expensive. For reservation, please do it directly by the participants through this link on booking.com.

There are two airports and many train stations in Beijing.

Beijing Capital International Airport (IATA code: PEK)

Taxi to the Tsinghua Southeast gate is about 31 km and about 1 hour by car (or 1.5 hours in traffic hour) with the taxi fee of about RMB 150 yuan.

Metro to the Tsinghua Southeast gate is about 1.5 hours with the fee of RMB 30 yuan. Direction: From Beijing Capital International Airport, takes the Capital Airport Line to Sanyuanqiao, then takes Line 10 Out Loop to Zhichunlu, then takes Line 13 to Wudaokou, then walk to Tsinghua University Southeast Gate.

Beijing Daxing International Airport (IATA code: PKX)

Taxi to the Tsinghua Southeast gate is about 73 km and about 1.5 hour by car (or 2.5 hours in traffic hour) with the taxi fee of about RMB 250 yuan.

Metro to the Tsinghua Southeast gate is about 1.5 hours with the fee of RMB 40 yuan. Direction: From Beijing Daxing International Airport, takes Beijing Daxing International Airport Line to Caoqiao, then takes Line 10 Inner Loop to Zhichunlu, then takes Line 13 to Wudaokou, then walk to Tsinghua University Southeast Gate.

Train Stations: There are many train stations in Beijing --- Beijing Station, Beijing South, Beijing West, Beijing North, etc.

In particular, for participants who will get to Hangzhou for the 21 cm cosmology conference the week after, you are suggested to take the flight from Beijing Capital International Airport to Hangzhou Xiaoshan International Airport (IATA code:HGH), or the train from Beijing South Station to Hangzhou East Station.

If you need a visa to attend this conference, please email Ms. Liu at jiaqiliu _at_ tsinghua _dot_ edu _dot_ cn, with your full name, title, affiliation, date of birth, nationality and passport number.

Tsinghua campus is located in the northwest of Beijing. The Old Summer Palace is just outside the West Gate of Tsinghua campus. The Summer Palace is also very close (about 5km). Further away to the northern direction from Tsinghua, there is the Great Wall. In the downtown (city center) of Beijing, there are the Forbidden City, the Beihai Park and other cultural tourism sites.

If you have special requests, please email Ms. Liu at jiaqiliu _at_ tsinghua _dot_ edu _dot_ cn and/or Prof. Yi Mao at ymao _at_ tsinghua _dot_ edu _dot_ cn.