Advanced 21-cm Cosmology

school and workshop

The 21-cm line from the neutral hydrogen (HI) atom is an important observational probe of the evolution of the universe from about 0.4 million years after the Big Bang until today. Future observations will shed light upon important cosmological epochs such as the cosmic dark ages, the epoch of cosmic dawn and the Epoch of Reionization (EoR) of the universe. Keeping in view the ongoing global efforts for detecting the cosmological 21-cm signal, there is an active participation of the Indian community working on several aspects of theory, simulation, and observations of these epochs. This school plus workshop is a biannual event organised by the Indian SKA Science Working Group in cosmology to facilitate the exchange of updates on ongoing research, foster new collaborations and encourage Ph.D. students and early post-docs to share their work and gain exposure in the field.

The school will consist of a series of theory lectures, hands-on demonstrations and discussions on different methods of analytical modelling, simulations, observations, data reduction and statistical inference for multi-wavelength observations of this early phase of our Universe.

SOC Members

LOC Members

Girish Kulkarni (TIFR)
Mayuri S. Rao (RRI)
Pravabati Chingangbam (IIA)
Samir Choudhuri (Chair, IIT Madras)
Somnath Bharadwaj (IIT Kharagpur)
Tirthankar Roy Choudhury (NCRA)
Tuhin Ghosh (NISER)
Tuhin Ghosh
Luke Robert Chamandy
Nishikanta Khandai
Srijita Sinha
Tanya Tripty


Workshop Group Photo

School Group Photo

Important Dates

School: 11 ~ 16 December 2023 [Mon-Sat]
Workshop: 18 ~ 21 December 2023 [Mon-Thu]

Registration (both School & Workshop)
  • Registration starts: 10 September 2023
  • Registration ends: 10 November 2023
  • Announcement of participants: 17 November 2023

Registration

Separate Google-Forms are available to register for the Advanced 21-cm School and the Workshop.

Register for School

Register for Workshop

Topics

Advanced 21-cm Cosmology School

  • A. Global 21-cm signal: Theory
  • B. Global 21-cm signal: Experiments
  • C. Interferometric Detection Techniques
  • D. Simulations and Inference
  • E. Synergies with other Observational Probes

Speakers

Girish Kulkarni

TIFR, Mumbai

Kanan Datta

Jadavpur University, Kolkata

Prasun Dutta

IIT BHU, Varanasi

Pravabati Chingangbam

IIA, Bangalore

Rishi Khatri

TIFR, Mumbai

Saurabh Singh

RRI, Bangalore

Tomáš Šoltinský

TIFR, Mumbai

Tuhin Ghosh

NISER, Bhubaneswar

Participants


List of participants for the School.


List of participants for the Workshop.

Schedule of School Lectures


Schedule in one page.

09:30 - 12:15

09:30 - 10:00 | Registration

10:00 - 11:00 | Prof. Kanan Datta [1/3] Global 21 cm Signal Theory

11:00 - 11:15 | Tea/Coffee Break

11:15 - 12:15 | Dr. Saurabh Singh [1/4] Global 21 cm Signal Experiment

12:15 - 14:00 | Lunch Break

14:00 - 17:50

14:00 - 15:00 | Dr. Prasun Dutta [1/5] Interferometric Detection Technique

15:00 - 16:00 | Dr. Girish Kulkarni [1/3] 21 cm Modelling

16:00 - 16:20 | Tea/Coffee Break

16:20 - 17:50 | Prof. Kanan Datta [Tutorial] Global 21 cm Signal Theory

10:00 - 12:15

10:00 - 11:00 | Prof. Kanan Datta [2/3] Global 21 cm Signal Theory

11:00 - 11:15 | Tea/Coffee Break

11:15 - 12:15 | Dr. Tomáš Šoltinský [1/2] 21 cm Forest

12:15 - 14:00 | Lunch Break

14:00 - 17:50

14:00 - 15:00 | Dr. Prasun Dutta [2/5] Interferometric Detection Technique

15:00 - 16:00 | Dr. Girish Kulkarni [2/3] 21 cm Modelling

16:00 - 16:20 | Tea/Coffee Break

16:20 - 17:50 | Dr. Saurabh Singh [Tutorial] Global 21 cm Signal Experiment

10:00 - 12:15

10:00 - 11:00 | Prof. Kanan Datta [3/3] Global 21 cm Signal Theory

11:00 - 11:15 | Tea/Coffee Break

11:15 - 12:15 | Dr. Tomáš Šoltinský [2/2] 21 cm Forest

12:15 - 14:00 | Lunch Break

14:00 - 17:50

14:00 - 15:00 | Dr. Prasun Dutta [3/5] Interferometric Detection Technique

15:00 - 16:00 | Dr. Girish Kulkarni [3/3] 21 cm Modelling

16:00 - 16:20 | Tea/Coffee Break

16:20 - 17:50 | Dr. Girish Kulkarni [Tutorial] 21 cm Modelling

10:00 - 12:15

10:00 - 11:00 | Dr. Prasun Dutta [4/5] Interferometric Detection Technique

11:00 - 11:15 | Tea/Coffee Break

11:15 - 12:15 | Dr. Saurabh Singh [2/4] Global 21 cm Signal Experiment

12:15 - 14:00 | Lunch Break

14:00 - 17:50

14:00 - 15:00 | Dr. Prasun Dutta [5/5] Interferometric Detection Technique

15:00 - 16:00 | Prof. Pravabati Chingangbam [1/4] Statistics Beyond the Power Spectrum

16:00 - 16:20 | Tea/Coffee Break

16:20 - 17:50 | Dr. Prasun Dutta [Tutorial] Interferometric Detection Technique

10:00 - 12:15

10:00 - 11:00 | Prof. Pravabati Chingangbam [2/4] Statistics Beyond the Power Spectrum

11:00 - 11:15 | Tea/Coffee Break

11:15 - 12:15 | Prof. Rishi Khatri [1/2] 21 cm to Probe Non-Standard Physics - No Video -

12:15 - 14:00 | Lunch Break

14:00 - 17:50

14:00 - 15:00 | Dr. Saurabh Singh [3/4] Global 21 cm Signal Experiment

15:00 - 16:00 | Prof. Pravabati Chingangbam [3/4] Statistics Beyond the Power Spectrum

16:00 - 16:20 | Tea/Coffee Break

16:20 - 17:50 | Prof. Pravabati Chingangbam [Tutorial] Statistics Beyond the Power Spectrum

10:00 - 12:15

10:00 - 11:00 | Prof. Pravabati Chingangbam [4/4] Statistics Beyond the Power Spectrum

11:00 - 11:15 | Tea/Coffee Break

11:15 - 12:15 | Prof. Rishi Khatri [2/2] 21 cm to Probe Non-Standard Physics

12:15 - 14:00 | Lunch Break

14:00 - 16:00

14:00 - 15:00| Dr. Saurabh Singh [4/4] Global 21 cm Signal Experiment

15:00 - 16:00 | Dr. Tuhin Ghosh Synergy of 21 cm Cosmology with CMB Polarisation

16:00 - 16:20 | Tea/Coffee Break

~ End of School ~

Schedule of Workshop Lectures


Schedule in one page.

09:30 - 12:30

09:30 - 10:10 | Inauguration

10:10 - 10:50 | Abhirup Datta (Invitee) 21 cm Cosmology: Challenges in Observations from Ground and Space

10:50 - 11:10 | Tea/Coffee Break

11:10 - 11:30 | Samit Kumar Pal Constraining the ionospheric effect on EoR observation with the SKA1-Low Telescope

11:30 - 11:50 | Rashmi Sagar Exploring the ELAIS-N1 Field with uGMRT Band-2 Observations: Calibration, Catalogue, and Source Count

11:50 - 12:10 | Jais Kumar Bias and variance of the redshifted 21- cm power spectrum in presence of time and frequency-correlated gain errors

12:10 - 12:30 | Saikat Gayen Analysis of Calibration Error and Calculation of Bias and Variance of HI Power Spectrum due to Calibration Error in Presence of Strong Foreground

12:30 - 13:45 | Lunch Break

13:45 - 16:35

13:45 - 14:25 | Nirupam Roy (Invitee) Indian participation in the SKA

14:25 - 14:45 | Arnab Mishra Prospects of detecting individual ionized bubbles in HI 21-cm maps using uGMRT

14:45 - 15:15 | Sandeep Kumar Acharya The role of soft photon injection and heating in 21 cm cosmology

15:15 - 15:35 | Tea/Coffee Break

15:35 - 16:35 | Discussion - I

09:30 - 12:30

09:30 - 10:10 | Somnath Bharadwaj (Invitee) The Tapered Gridded Estimator

10:10 - 10:50 | Srijita Pal (Invitee) Current status of high-redshift 21-cm Intensity Mapping experiments

10:50 - 11:10 | Tea/Coffee Break

11:10 - 11:30 | Md Asif Elahi Towards 21-cm intensity mapping at z=2.28 with uGMRT using the tapered gridded estimator III: Foreground removal

11:30 - 11:50 | Suman Pramanick A new method to simultaneously determine the reionization history and power spectrum

11:50 - 12:10 | Anshuman Tripathi Extracting the HI 21 cm signal from the ground-based observation using ANN

12:10 - 12:30 | Rajib Saha A foreground model-independent method to remove foregrounds from observed H21 cm Signal

12:30 - 13:45 | Lunch Break

13:45 - 16:35

13:45 - 14:25 | Hamsa Padmanabhan (Invitee | ONLINE) The HI intensity mapping power spectrum: insights from recent measurements

14:25 - 14:45 | Chandra Shekhar Murmu Impact of astrophysical scatter on the Epoch of Reionization HI 21cm bispectrum

14:45 - 15:15 | Sukhdeep Singh Multipole moments of EoR 21-cm redshift space bispectrum

15:15 - 15:35 | Tea/Coffee Break

15:35 - 16:35 | Discussion - II

09:30 - 12:30

09:30 - 10:10 | Shikhar Mittal (Invitee) Radiative transfer of Lyα photons with realistic gas physics

10:10 - 10:50 | Divesh Jain (Invitee) Probing the Epoch of Reionization with CMB Anisotropies

10:50 - 11:10 | Tea/Coffee Break

11:10 - 11:30 | Raghunath Ghara Probing the states of the IGM during the Epoch of Reionization

11:30 - 11:50 | Janakee Raste Lyman-α Heating and Cooling during the Cosmic Dawn

11:50 - 12:10 | Anirban Chakraborty Modelling the properties of star-forming galaxies at high redshifts

12:10 - 12:30 | Atrideb Chatterjee Predictions of the 21 cm global signal in the JWST and ALMA era

12:30 - 13:45 | Lunch Break

13:45 - 16:35

13:45 - 14:25 | Saurabh Paul (Invitee | ONLINE) Neutral Hydrogen Intensity Mapping in the post-reionization Universe

14:25 - 15:15 | Poster Session

15:15 - 15:35 | Tea/Coffee Break

15:35 - 16:35 | Discussion - III

09:30 - 12:30

09:30 - 10:10 | Anjan Sarkar (Invitee) Weighing Neutrinos with Lyman-α observations

10:10 - 10:50 | Samir Choudhuri (Invitee) SKA data challenge 3a (CD/EoR)

10:50 - 11:10 | Tea/Coffee Break

11:10 - 11:30 | Akanksha Kapahtia Semi-numerical simulations of the epoch of helium reionization

11:30 - 11:50 | Antara Dey Constraints on Dark Matter-Neutrino Interaction from 21-cm Cosmology

11:50 - 12:10 | Debarun Paul Effects of Z3 symmetric dark matter models on global 21-cm signal

12:10 - 12:30 | Minal Chhabra Quantifying the flow of matter through the Cosmic Web

12:30 - 13:45 | Lunch

~ End of Workshop ~

Accommodation

Accommodation will be provided to all the participants in the NISER guest house during the workshop period. The name of the guest house provided to the participants will be updated here.

How to Reach

NISER Bhubaneswar is located at Jatni, which is around 30 km from Bhubaneswar City/Railway station (BBS).
Via train: The nearest railway station is Khurda Road Junction (KUR), which is around 4 km from NISER. One can avail auto-rickshaw service or state-run road transportation buses from both the train stations (towards Khurda) to reach NISER. The tentative fare is ₹150~200.
Via air: The nearest airport is Biju Patnaik International Airport (BBI), which is around 28 km from NISER. One can avail Ola/Uber or a pre-paid taxi service from the airport to reach NISER. The tentative fare is ₹800~1,200.

Sponsors

[Parent] : Department of Atomic Energy, Govt. of India
[Host] : National Institute of Science Education and Research

Contacts

Postal contact address:

Organisers, Advanced 21-cm Cosmology School and Workshop
School of Physical Sciences
National Institute of Science Education and Research, Bhubaneswar
PO: NISER, Via: Jatni, District: Khurda, Odisha - 752050

 

  •   +91-674-2494292
  •   21cmcosmology@niser.ac.in
  • School of Physical Sciences, NISER
  • +91-674-2494-292
  • 21cmcosmology@niser.ac.in