Physics and Astronomy

photo of Rajesh Mondal

Mr Rajesh Mondal

Post:Postdoctoral Research Fellow (Astronomy Centre)
Location:PEVENSEY 3 4C16
Email:Rajesh.Mondal@sussex.ac.uk
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Role

Postdoctoral Research Fellow in Computational cosmology

 

Research Interests:

Epoch of Reionization (EoR), Simulations of EoR 21-cm signal, Cosmological N -body Simulations, Large Scale Structure, Statistics of non-Gaussian cosmological signal, Dark Matter, Cosmic Microwave Background (CMB), Low Frequency Radio Interferometry

Education:

PhD, Indian Institute of Technology Kharagpur, WB, India
Thesis title: Statistics of Epoch of Reionization 21-cm signal: The non-Gaussian effects on the power spectrum error predictions
November 2017

Master of Science, Physics, Indian Institute of Technology Kharagpur, WB, India
June 2012

Bachelor of Science, Physics, Scottish Church College, University of Calcutta, Kolkata, WB, India
June 2010

Collaborators:

Ilian Iliev (University of Sussex, UK), Somnath Bharadwaj (IIT Kharagpur, India), Suman Majumdar (Imperial College, London), Kanan K. Datta (Presidency University, India), Tirthankar Roy Choudhury (NCRA-TIFR, India), Shiv. K. Sethi (Raman Research Institute, India), Subinoy Das (Indian Institute of Science, India)

Fellowships, Awards and Memberships:

Fellow of the Royal Astonomical Society (FRAS), March 2018 to present

Member of the 'SKA Cosmology Science Working Group (SWG)', June 2017 to present

Member of the 'SKA Cosmic Dawn and Epoch of Reionization (CD/EoR) Science Working Group (SWG)', December 2016 to present

Member of the 'SKA India EoR' science working group, September 2015 to present

Senior Research Fellowship (SRF), IIT Kharagpur, June 2014 to June 2017

GitHub Repositories:

https://github.com/rajeshmondal18

1. Particle-Mesh (PM) Parallelized N-Body code

2. Friends-of-Friends halo finder code

3. ReionYuga: Semi-numerical Reionization code

First or Second Author Publications:

10. Rajesh Mondal, Somnath Bharadwaj, Ilian T. Iliev, Kanan K. Datta, Suman Majumdar, Abinash K. Shaw, Anjan K. Sarkar, 2018, A method to determine the evolution history of the mean neutral Hydrogen fraction, MNRAS Letters, 483, L109, arXiv:1810.06273

9. Satadru Bag, Rajesh Mondal, Prakash Sarkar, Somnath Bharadwaj, Tirthankar Roy Choudhury, Varun Sahni, 2018, Studying the morphology of HI isodensity surfaces during reionization using Shapefinders and percolation analysis, arXiv:1809.05520

8. Satadru Bag, Rajesh Mondal, Prakash Sarkar, Somnath Bharadwaj, Varun Sahni, 2018, The shape and size distribution of HII regions near the percolation transition, MNRAS, 477, 1984, arXiv:1801.01116

7. Kanan K.Datta, Rajesh Mondal, Raghunath Ghara, Somnath Bharadwaj, T. Roy Choudury, 2018, Understanding the impact of Light cone effect on the EoR/CD 21-cm power spectrum, Proceedings of the International Astronomical Union, 12(S333), 12-17

6. Subinoy Das, Rajesh Mondal, Vikram Rentala, Srikanth Suresh, 2018, On dark matter - dark radiation interaction and cosmic reionization, JCAP, 08, 045, arXiv:1712.03976

5. Rajesh Mondal, Somnath Bharadwaj, Kanan K. Datta, 2018, Towards simulating and quantifying the light-cone EoR 21-cm signal, MNRAS, 474, 1390, arXiv:1706.09449

4. Rajesh Mondal, Somnath Bharadwaj, Suman Majumdar, 2017, Statistics of the epoch of reionization (EoR) 21-cm signal – II. The evolution of the power spectrum error-covariance, MNRAS, 464, 2992, arXiv:1606.03874

3. Abir Sarkar, Rajesh Mondal, Subinoy Das, Shiv.K.Sethi, Somnath Bharadwaj, David J. E. Marsh, 2016, The effects of the small-scale DM power on the cosmological neutral hydrogen (HI) distribution at high redshifts, JCAP, 04, 012, arXiv:1512.03325

2. Rajesh Mondal, Somnath Bharadwaj, Suman Majumdar, 2016, Statistics of the epoch of reionization 21-cm signal – I. Power spectrum error-covariance, MNRAS, 456, 1936, arXiv:1508.00896

1. Rajesh Mondal, Somnath Bharadwaj, Suman Majumdar, Apurba Bera, Ayan Acharyya, 2015, The effect of non-Gaussianity on error predictions for the Epoch of Reionization (EoR) 21-cm power spectrum, MNRAS Letters, 449, L41, arXiv:1409.4420

Publications as a Member of Core Science Team:

5. A. K. Shaw, S. Bharadwaj, R. Mondal, 2019, The impact of non-Gaussianity on the error covariance for observations of the Epoch of Reionization (EoR) 21-cm power spectrum, Submitted to MNRAS, arXiv:1902.08706

4. S. Majumdar, J. Pritchard, R. Mondal, C. Watkinson, S. Bharadwaj, G. Mellema, 2018, Quantifying the non-Gaussianity in the EoR 21-cm signal through bispectrum, MNRAS, 476, 4007, arXiv:1708.08458

3. C. Watkinson, S. Majumdar, J. Pritchard, R. Mondal, 2017, A fast estimator for the bispectrum and beyond - a practical method for measuring non-Gaussianity in 21-cm maps, MNRAS, 472, 2436, arXiv:1705.06284

2. S. Majumdar, K. Datta, R. Ghara, R. Mondal, T. Roy Choudhury, S. Bharadwaj, Sk. S. Ali, A. Datta, 2016, Line of sight anisotropies in the Cosmic Dawn and EoR 21-cm power spectrum, Journal of Astrophysics and Astronomy, 37, 32, arXiv:1610.08180

1. T. Roy Choudhury, K. Datta, S. Majumdar, R. Ghara, A. Paranjape, R. Mondal, S. Bharadwaj, S. Samui, 2016, Modelling the 21 cm Signal From the Epoch of Reionization and Cosmic Dawn, Journal of Astrophysics and Astronomy, 37, 29, arXiv:1610.08179

Academic Visits:

3. Visiting Fellow, National Centre for Radio Astrophysics (NCRA) - Tata Institute of Fundamental Research (TIFR), Pune, India, July 2017 to October 2017

2. Scuola Normale Superiore, Pisa, Italy, May 31- June 5, 2016

1. Raman Research Institute, Bangalore, India, June 15 - 22, 2015

Talks and Presentations:

11. Sussex Astronomy Colloquium, Department of Physics and Astronomy, University of Sussex, Brighton BN19QH, United Kingdom (5 October 2018): The Statistics of the Epoch of Reionization 21-cm signal

10. Rise and shine: galaxies in the epoch of reionization, Universite de Strasbourg, France (18-22 June 2018): Towards simulating and quantifying the light-cone EoR 21-cm signal

9. RAS Meeting on he Epoch of Reionisation: UK community update, Burlington House, Piccadilly, London, UK (9 February 2018): The effect of non-Gaussianity on error predictions for the EoR 21-cm power spectrum and parameter estimation

8. NCRA Colloquium, NCRA-TIFR, Pune, India, 13 October 2017: Statistics of the Epoch of Reionization 21-cm signal: The non-Gaussian effects on the power spectrum error predictions

7. Workshop on Cosmology with Next Generation Radio Surveys, ICTP, Italy (6 - 17 June 2016): Statistics of the epoch of reionization (EoR) 21-cm signal: The evolution of the power spectrum error-covariance

6. Scuola Normale Superiore, Pisa, Italy (1st June 2016): Statistics of the epoch of reionization 21-cm signal: Power spectrum error-covariance

5. A National Workshop: Cosmology with the HI 21-cm Line, RRI, Bangalore (23 - 26 June 2015): EoR 21-cm Power Spectrum Error Covariance

4. The Olympian Symposium 2015: Cosmology and the Epoch of Reionization, Mount Olympus, Greece (18 - 22 May 2015): The effect of non-Gaussianity on error predictions for the Epoch of Reionization (EoR) 21-cm power spectrum

3. Saha Theory Workshop: Cosmology at the Interface, SINP, Kolkata (18 - 22 May 2015): Non-Gaussian error predictions for the EoR 21-cm power spectrum

2. 5th Research Scholars' Day, IIT Kharagpur (21st March 2015): The 21-cm signal from the epoch of reionization

1. Topical Conference on Gravity and Cosmology, Presidency University (9th Aug 2014): Semi-numerical Simulation of the EoR signal