Khandakar Md Asif Elahi

About

My research focuses on detecting the neutral hydrogen 21-cm signal from the early Universe, which promises to reveal the history of the very first stars and galaxies, distribution of large-scale structures, and nature of dark energy and dark matter. I use radio arrays, such as uGMRT, MWA, and SKA for this purpose.

Employment

• Raman Research Institute Post-Doctoral Fellow
  2026 - Present
• National Institute of Science Education and Research Post Doctoral Fellow
  2026 - 2026
• Indian Institute of Technology Madras Post Doctoral Researcher
  2024 - 2026

Education

• Indian Institute of Technology Kharagpur PhD
  2018 - 2024

Projects & Funding

Projects & funding information is unavailable.

Publications (17)

• The Epoch of Reionization 21 cm Bispectrum at z = 8.2 from MWA Data. II. Smooth Component Filtering
  The Astrophysical Journal 2026 DOI: 10.3847/1538-4357/ae66f4
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• The Tracking Tapered Gridded Estimator for the 21-cm power spectrum from the Murchison Widefield Array (MWA) drift scan observations – III. Improved upper limits at z = 8.2 from multiple pointings
  Monthly Notices of the Royal Astronomical Society 2026 DOI: 10.1093/mnras/stag801
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• Bayes-SCF: a Bayesian filter to mitigate foreground leakage in the 21-cm power spectrum
  Monthly Notices of the Royal Astronomical Society 2026 DOI: 10.1093/mnras/stag1225
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• The Evolving Power Spectrum for the Light Cone Epoch of Reionization 21 cm Signal
  The Astrophysical Journal 2025 DOI: 10.3847/1538-4357/adc678
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• Square Kilometre Array Science Data Challenge 3a: foreground removal for an EoR experiment
  Monthly Notices of the Royal Astronomical Society 2025 DOI: 10.1093/mnras/staf1466
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• A measurement of Galactic synchrotron emission using MWA drift scan observations
  Publications of the Astronomical Society of Australia 2025 DOI: 10.1017/pasa.2025.10065
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• A Visibility-based Angular Bispectrum Estimator for Radio-interferometric Data
  The Astrophysical Journal 2025 DOI: 10.3847/1538-4357/ad9b20
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• The Tracking Tapered Gridded Estimator for the 21-cm power spectrum from MWA drift scan observations – II. The missing frequency channels
  Monthly Notices of the Royal Astronomical Society 2025 DOI: 10.1093/mnras/staf896
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• Calibration requirements for epoch of reionization 21-cm signal observations. Part IV. Bias and variance with time and frequency correlated residual gains
  Journal of Cosmology and Astroparticle Physics 2025 DOI: 10.1088/1475-7516/2025/07/024
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• The Epoch of Reionization 21 cm Bispectrum at z = 8.2 from MWA Data. I. Foregrounds and Preliminary Upper Limits
  The Astrophysical Journal 2025 DOI: 10.3847/1538-4357/ae0463
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