Arnab Chakraborty

Communication and mentoring

Talks & Teaching

Invited seminars, conference presentations, summer-school lectures, and student supervision in radio astronomy and cosmology.

Invited talks and seminars

  • Detection of the Cosmological 21 cm Auto Power Spectrum with CHIME at z > 1State of the Universe Seminar, Tata Institute of Fundamental Research, Mumbai
  • Detection of the Cosmological 21 cm Auto Power Spectrum with CHIME at z > 1Astrophysics Seminar, Raman Research Institute, Bengaluru
  • Detection of the Cosmological 21 cm Auto Power Spectrum with CHIME at z > 1Seminar, Indian Institute of Technology Kharagpur
  • Mapping the large-scale structure of the Universe with CHIME and CHORDSeminar, Raman Research Institute, Bengaluru
  • Progress towards measuring the HI auto-power spectrum using CHIME data“Radio Cosmology and Continuum Observations in the SKA Era: A Synergic View”, ICTS-TIFR, Bengaluru

Contributed talks

  • Detection of the Cosmological 21 cm Auto Power Spectrum with CHIME at z > 1Line Intensity Mapping conference, Caltech
  • Detection of the Cosmological 21 cm Auto Power Spectrum with CHIME at z > 1Science at Low Frequency (SALF), Orléans, France
  • Progress towards measuring the HI auto-power spectrum using CHIME dataLine Intensity Mapping 2025, Annecy, France
  • Progress towards measuring the HI auto-power spectrum using CHIME dataCosmology in the Alps, Switzerland
  • Progress towards measuring the HI auto-power spectrum using CHIME dataTomFest: Frontiers in Radio Science and Engineering with Tom Landecker, DRAO
  • Characterizing low-frequency foregrounds for cosmological HI studies with the uGMRTAAS 236 (virtual meeting)
  • First multi-redshift limits on the HI 21 cm signal from z = 1.96–3.58 using the uGMRTSAZERAC SIP, 21 cm signal from Cosmic Dawn and the Epoch of Reionization
  • Detailed study of foregrounds in the ELAIS-N1 field“First Billion Years”, IIT Indore
  • Detailed study of the ELAIS-N1 field with uGMRT observations at 300–500 MHz“Frontiers in 21 cm Cosmology”, Kodaikanal Solar Observatory
  • Characterizing foregrounds in 21 cm cosmology observations with the uGMRT at 300–500 MHz“Universe after the first 200 million years”, Presidency University, Kolkata

Lecture series and schools

Three graduate-level lectures on Radio Data Analysis and Observational Challenges in Radio Cosmology, delivered at the ICTS-TIFR school “Radio Cosmology and Continuum Observations in the SKA Era: A Synergic View”, Bengaluru, April 2025. The recordings are freely available:

Lecture 1 Lecture 2 Lecture 3

  • Radio astronomy data analysis tutorial“First Billion Years” school, IIT Indore
  • Calibration, imaging, and power-spectrum estimation“Frontiers in 21 cm Cosmology” school, Kodaikanal Solar Observatory

Teaching Assistant during Ph.D

  • Radio Data Analysis and Astrostatistics (computer laboratory)IIT Indore · designed and taught a hands-on course on calibration, RFI flagging and imaging in CASA, with student projects on uGMRT and VLA data that fed into theses
  • Radio Astronomy and Radiative Transfer (teaching assistant)IIT Indore · tutorials and assessments for M.Sc. and first-year PhD students

I also train graduate, undergraduate and summer students in CHIME data analysis, pipeline development, and statistical methodology.