Research Grants on Astrophysics/Cosmology Projects


1. Suchetana Chatterjee,“The Cosmic Evolution of Supermassive Black Holes: A Multi-Wavelength Approach”, Duration: 12.6. 2023-11.6. 2026 , INR 30,00,000/- DST-SERB POWER Fellowship

2. Ritaban Chatterjee, “Theoretical Modeling of Jet Emission Variability for In-Depth Interpretation of Long-Term Multi-Wavelength Blazar Data.", Oct 2023-Sept 2026, INR 26,22,210/- DST-SERB

3. Saumyadip Samui, “Exploring The Nature Of Galaxies At Z=10 And Beyond And The Associated Feedback As Probed By JWST", INR 20,27,696/- DST-SERB


1. Ritaban Chatterjee, “Probing the Accretion Disk-Corona Relation in Seyfert Galaxies.", INR 20,27,696/- ISRO


1. Suchetana Chatterjee,“Studying the Sunyaev Zeldovich Effect from Quasar Feedback”, Duration: 12.1. 2021-11.1. 2024 , INR 19,46,296/- DST-SERB


1. Kanan Kumar Datta (PI: 2020-2021, Co-I), Ritaban Chatterjee (Co-I), Suchetana Chatterjee (Co-I), Saumyadip Samui (Co-I: 2020-2021, PI) “Optical Monitoring of variable stars and transients with a 14 inch telescope” , April 2020-March 2023, INR 31, 17, 100 /- DAE-BRNS


1. Ritaban Chatterjee , “Physics of Jets from the Comprehensive Timing Analyses of the X-Ray Variability of Blazars” 2019-22, INR 19,50,000/- ISRO


1.Suchetana Chatterjee,“The Co-Evolution of Supermassive Black Holes with Dark Matter in the Universe”, Duration: April 2017-March 2020 (extended to June 2020), INR 13,76,100/- DST-SERB


1.Kanan Kumar Datta, Complimentary Grant for UGC-FRP Program, Duration: 2016-2018, 6,00,000/- UGC


1.Ritaban Chatterjee, “Investigating the Effect of Turbulence on the Emission-

Variability of BlazarJets” (2015-17), INR 6,00,000/- UGC

2. Saumyadip Samui, “Study of galactic outflows and their effects on the intergalactic medium, (2015-17), INR 6,00,000 /- UGC

3. Suchetana Chatterjee, “Investigating the Halo Occupation Distribution Properties of Active Galactic Nuclei” (2015-2017), INR 6,00,000/- UGC


1. Kanan Kumar Datta, “Unveiling cosmic reionization through radio interferometric observations of neutral hydrogen” Duration: 2013-2016, INR 24,00,000 /- (INR 15, 00, 000 transferred to PU) DST-SERB

Observing Proposals

2023 June: Probing the Accretion Disk-Corona Relation in the Broad Line Seyfert 1 Galaxy Mrk 509, Awarded 120 ks time on AstroSat, PI Arijit Sar , (PhD Student), Co-I: Ritaban Chatterjee

2023 June: Intensive UV-X-ray spectral reverberation mapping of the bare Seyfert 1 galaxy Fairall 9 Awarded 90 ks time on AstroSat, PI: Arijit Sar , (PhD Student), Co-I: Ritaban Chatterjee

2023 June: Longlook Observations of Two TeV Blazars H 1426+428 and PG 1553+113 Awarded 100 ks time on AstroSat PI: Susmita Das, (PhD Student), Co-I: Ritaban Chatterjee

2021 Nov The Connection between Accretion-Disk and Jet in Broad Emission Line Quasars,Effelsberg Germany,PI Avinanda Chakraborty (PhD Student at PU), Co-I: Suchetana Chatterjee

2021 Jul Awarded 100 ks time on AstroSat to observe a TeV blazar, PI: Ritaban Chatterjee

2021 Jul Awarded 60 ks time on AstroSat to observe AGN host galaxies in the

UV band, PI Avinanda Chakraborty (PhD Student at PU), Co-I Ritaban Chatterjee, Suchetana Chatterjee

2020 Sep Awarded 100 ks time on AstroSat to observe a TeV blazar, PI: Ritaban Chatterjee

2020 Mar Awarded 50 ks time on AstroSat to observe a blazar, PI: Ritaban Chatterjee

2019 Jul Tempest in a Teacup: AGN Feedback Due to Quasar Winds,Chandra Cycle 21 Observing Proposal Co-I: Suchetana Chatterjee,PI: Craig Sarazin (University of Virginia)

2018 June Awarded 150 ks time on AstroSat to observe four blazars, PI: Ritaban Chatterjee

2017 Oct Spitzer observations of the field of the hyperluminous quasar HE0515-4414, Spitzer Proposal and Follow Up Gemini Proposal, Co-I: Suchetana Chatterjee, PI: Mark Lacy (NRAO)

2017 Sep Awarded two nights on the Devasthal Optical Telescope at Nainital

to observe the radio galaxy 3C 111 simultaneously with Astrosat, PI: Ritaban Chatterjee

2017 August Awarded 50 ks time on AstroSat to observe the radio galaxy 3C 111,

PI: Ritaban Chatterjee

2016 Sep Awarded 100 ks time on AstroSat to observe the blazar Mrk 421, PI: Ritaban Chatterjee

2016 Aug Direct detection of a quasar hyperwind through the Sunyaev-Zeldovich Effect, ALMA Proposal, Co-I: Suchetana Chatterjee, PI: Mark Lacy (NRAO)

2016 Jul The Chandra Deep Wide-Field Survey: Completing The New Generation Of Chandra Extragalactic Surveys, Co-I: Suchetana Chatterjee , 1025 ks of Chandra time awarded. PI: Ryan Hickox (Dartmouth College)

Five Years Publications in Astrophysics and Cosmology: Refereed (BF: Faculty, italics: Students)


  1. Ankita Bera, Raghunath Ghara, Atrideb Chatterjee, Kanan Datta, Saumyadip Samui, “Studying cosmic dawn using redshifted HI 21-cm signal: A brief review”, Journal of Astrophysics and Astronomy , 44, 1, (2023), IF: 1.61
  1. Ankita Bera, Saumyadip Samui, Kanan Datta, “Impact of cosmic rays on the global 21-cm signal during cosmic dawn”, MNRAS, 519, 4, (2023), IF: 5.235
  1. Susmita Das and Chatterjee, Ritaban , “Correlated short time-scale hard-soft X-ray variability of the blazars Mrk 421 and 1ES 1959+650 using AstroSat”, MNRAS , 524, 3, (2023). IF: 5.235
  1. Avinanda Chakraborty, Suchetana Chatterjee , Mark Lacy, Soumya Roy, Samrat Roy, and Rudrani Kar Chowdhury, “Cosmological Simulation of Galaxy Groups and Clusters-III: Constraining Quasar Feedback Models with the Atacama Large Millimeter Array”, Astrophysical Journal,954, 1, (2023), IF: 4.9
  1. Prince Raj, Anuvab Banerjee, Ajay Sharma, Avik Kumar Das, Alok Gupta, Debanjan Bose (VF), “Quasi-periodic oscillation detected in γ-rays in blazar PKS 0346−27”, A&A , 678, 6, IF: 6.24
  1. Rishank Diwan, Raj Prince, Aditi Agarwal, Debanjan Bose (VF) , Pratik Majumdar, Aykut Özdönmez, Sunil Chandra, Rukaiya Khatoon, Ergün Ege, “Multiwavelength study of TeV blazar 1ES 1218+304 using gamma-ray, X-ray and optical observations”, MNRAS, 524, 3, IF: 5.235
  1. Banerjee, Anuvab, Sharma, Ajay, Mandal, Avijit, Das, Avik Kumar, Bhatta, Gopal, Bose, Debanjan (VF), “Detection of periodicity in the gamma-ray light curve of the BL Lac 4FGL J2202.7+4216”, MNRAS Letters, 523, 1F: 4.8
  1. Mondal, Tanima, Pramanick, Suman, Resmi, Lekshmi, Bose, Debanjan (VF) , “Probing gamma-ray burst afterglows with the Cherenkov Telescope Array”,MNRAS, 522, 4, IF: 5.235


  1. Rudrani Kar Chowdhury, Suchetana Chatterjee , Ankit Paul, Craig L. Sarazin, and Jane Lixin Dai, “Cosmological Simulation of Galaxy Groups and Clusters-II: Studying Different Modes of Feedback through X-ray Observations”, Astrophysical Journal,940, 1, (2022), IF: 5.874

  1. Garima Rajguruand Ritaban Chatterjee, “Moderate Correlation between the Accretion Disk and Jet Power in a Large Sample of Fermi Blazars” Physical Review D,106, 6, (2022), IF: 5.296
  1. Jorstad, S. G.; Marscher, A. P.; Raiteri, C. M.; ..., and Chatterjee, Ritaban, “Rapid Quasi-Periodic Oscillations in the Relativistic Jet of the Blazar BL Lacertae”, Nature , 609, 7926,, (2022), IF: 69.5
  1. Ritesh Ghosh, Sibasish Laha, Kunal Deshmukh, Varun Bhalerao, Gulab C. Dewangan, and Ritaban Chatterjee, “The origin of the vanishing soft X-ray excess in the changing-look Active Galactic Nucleus Mrk 590”, Astrophysical Journal, 937,1, (2022), IF: 5.874
  1. Avinanda Chakraborty, Anirban Bhattacharjee, Michael Brotherton, Ritaban Chatterjee, Suchetana Chatterjee and Miranda Gilbert, “Radio Dichotomy in Quasars with HβFWHM greater than 15,000 km\,s−1”, MNRAS, 516, 2, (2022), IF: 5.287
  1. Barat, Saugata; Chatterjee, Ritaban, and Mitra, Kaustav , “RMS-Flux Relation and Disc-Jet Connection in Blazars in the Context of the Internal Shocks Model”, MNRAS , 515, 2, (2022). IF: 5.287

  1. Souradip Bhattacharyya, Susmita Adhikari, Arka Banerjee, Surhud More, Amit Kumar, Ethan O. Nadler, and Suchetana Chatterjee, “ The Signatures of Self-Interacting Dark Matter and Subhalo Disruption on Cluster Substructure”, Astrophysical Journal , 932, 1, (2022), IF: 5.874
  1. Kundu, Aritra; Chatterjee, Ritaban; Mitra, Kaustav & Mondal, Sripan, “RMS-Flux Relation and Disc-Jet Connection in Blazars in the Context of the Internal Shocks Model”, MNRAS, 510, 3688 (2022). IF: 5.287
  1. Agniva Roychowdhury, Saumyadip Samui, “Exploring the voids: Luminosity functions and magnetic field”, New Astronomy, 92, 101718 (2022), IF:1.325
  1. Kanan K. Datta, Raghunath Ghara, Ariful Hoque, Suman Majumdar, "Large H I optical depth and redshifted 21-cm signal from cosmic dawn", MNRAS, 509, 1, 945-953 (2022), IF: 5.287


1. R. Kar Chowdhury, S. Roy, S. Chatterjee , N. Khandai, C. Sarazin, and T. DiMatteo, “Simulated X-ray Emission in Galaxy Clusters with Feedback from Active Galactic Nuclei”, Astronomische Nachrichten , 342, 164, (2021), IF:0.676

2. A. Chakraborty, A. Bhattacharjee, and S. Chatterjee , “Properties of Very Broad Line MgII Radio-loud and Radio-quiet Quasars”, Galaxies, Special Issue, 9(4), 74, (2021), IF: 3.17

3. Arghyadeep Basu, Nirupam Roy, Samir Choudhuri, Kanan K. Datta , Debajyoti Sarkar, “Stringent constraint on the radio signal from dark matter annihilation in dwarf spheroidal galaxies using the TGSS”, MNRAS, 502, 2, 1605-1611 (2021). IF: 5.287

4. Upala Mukhopadhyay, Debasish Majumdar, Kanan K. Datta , “Probing interacting dark energy and scattering of baryons with dark matter in light of the EDGES 21-cm signal”, Physical Review D , 103, 6, 063510 (2021), IF: 5.296

5. Arnab Chakraborty, Abhirup Datta, Nirupam Roy, Somnath Bharadwaj, Tirthankar Roy Choudhury, Kanan K. Datta, Srijita Pal, Madhurima Choudhury, Samir Choudhuri, Prasun Dutta, Debanjan Sarkar, “First Multi-redshift Limits on Post-Epoch of Reionization 21 cm Signal from z = 1.96-3.58 Using uGMRT”, The Astrophysical Journal Letters, 907, 1, L7, 6 (2021), IF: 7.413

6. Ritaban Chatterjee, Susmita Das, Archishman Khasnovis , Ritesh Ghosh, Neeraj Kumari, Sachindra Naik, V. M. Larionov, T. S. Grishina, E. N. Kopatskaya, E. G. Larionova, A. A. Nikiforova, D. A. Morozov, S. S. Savchenko, Yu. V. Troitskaya, I. S. Troitsky, A. A. Vasilyev, “Short-timescale variability of the blazar Mrk 421 from AstroSat and simultaneous multi-wavelength observations”, Journal of Astrophysics and Astronomy , 42, 2, 80 (2021), IF: 1.27


1. S. Bhattacharyya, R.Ghosh, R. Chatterjee, N.Das "Blazar Variability: A Study of Non-stationarity and the Flux-RMS Relation" , Astrophysical Journal, 897, 1, 10 (2020), IF: 5.874

2. R. Kar Chowdhury, S. Chatterjee, Anto. I. Lonappan , N. Khandai, and T. DiMatteo, ``Cosmological Simulations of Galaxy Groups and Clusters-I: Global Effect of Feedback from Active Galactic Nuclei'', Astrophysical Journal, 889, 1 (2020), IF: 5.874

3. S. Samui Pal, Saumyadip Samui, S. Kar, “A new technique for time series forecasting by using symbiotic organisms search”, Neural Computing and Applications, 32, 2365–2381 (2020).

4. E. Zackrisson, (including Kanan K. Datta), “Bubble mapping with the Square Kilometer Array – I. Detecting galaxies with Euclid, JWST, WFIRST and ELT within ionized bubbles in the intergalactic medium at z>6”, MNRAS, 493, Issue 1, p.855-870 (2020), IF: 5.287

5. R. Mondal, A. K. Shaw,T. I. Iliev, S. Bharadwaj, Kanan K . Datta, S.Majumdar, A. K. Sarkar, K. L. Dixon, “Predictions for measuring the 21-cm multi-frequency angular power spectrum using SKA-Low”, MNRAS, 494, 3, 4043 (2020), IF: 5.287

6. A. Masini, R. C. Hickox, C. M. Carroll, J. Aird, D. M. Alexander, R. J. Assef, R. Bower, M. Brodwin, M. J.~I. Brown, S. Chatterjee , Chien-Ting J. Chen, A. Dey, M. A. DiPompeo, K. J. Duncan, P. R.~M. Eisenhardt, W. R. Forman, A. H. Gonzalez, A. D. Goulding, K. N. Hainline, B. T. Jannuzi, C. Jones, C. S. Kochanek, R. Kraft, Kyoung-Soo Lee, E. D. Miller, J. Mullaney, A. D. Myers, A. Ptak, A. Stanford, D. Stern, A. Vikhlinin, D. A. Wake, Stephen S. Murray, “The Chandra Deep Wide-Field Survey: A New ChandraLegacy Survey in the bootes Field I. X-ray Point Source Catalog, Number Counts and Multi-Wavelength Counterparts”,251, 1, Astrophysical Journal supplement series , (2020), IF:8.136

7. Kanan K. Datta, Aritra Kundu, Ankit Paul , and Ankita Bera, “Cosmic recombination history in light of EDGES measurements of the cosmic dawn 21-cm signal”, Phys. Rev. D 102, 083502 (2020), IF: 5.296

8. Ankita Bera, Kanan K Datta, Saumyadip Samui , “Primordial magnetic fields during the cosmic dawn in light of EDGES 21-cm signal”, MNRAS, 498, 1, 918–925 (2020), IF: 5.287


1. A. Majumder, K. Mitra, Ritaban Chatterjee , C. M. Urry, C. D. Bailyn, and P. Nandi, “ Physical Inference from the Gamma-ray, X-ray, and Optical Time Variability of a Large Sample of Fermi Blazars”, MNRAS 490, 124-134 (2019), IF: 5.357

2. S. Mukherjee, K. Mitra, and Ritaban Chatterjee , “The Accretion Disk-Jet Connection in Blazars”, MNRAS 486, 1672-1680 (2019), IF: 5.357

3. N. Roy, Ritaban Chatterjee, M. Joshi, and A. Ghosh , “Probing the Jets of Blazars Using the Temporal Symmetry of Their Multi-Wavelength Outbursts”, MNRAS 482, 743-757 (2019), IF: 5.357

4. S. Mukherjee, A. Bhattacharjee, S. Chatterjee , J. A. Newman, and R. Yan, “X-ray Surface Brightness Profiles of Optically Selected Active Galactic Nuclei: Comparison with X-ray AGNs” , Astrophysical Journal 872, 1 (2019), IF: 5.746

5. M. Lacy, B. Mason, C. Sarazin, S. Chatterjee, K. Nyland, A. Kimball, G. Rocha, B. Rowe, J. Surace, “Direct detection of a quasar wind via the Sunyaev-Zeldovich Effect”, MNRAS Letters 483, 1 (2019), IF: 9.265

6. A. Sarkar and Saumyadip Samui, “On the Star Formation Efficiency in High-redshift Ly-alpha Emitters”, Publications of the Astronomical Society of the Pacific 131, 1001, 074101 (2019), IF:3.985

7. Rajesh Mondal, Somnath Bharadwaj, Ilian T. Iliev, Kanan K. Datta , Suman Majumdar, Abinash K. Shaw, Anjan K. Sarkar , “A method to determine the evolution history of the mean neutral Hydrogen fraction , MNRAS-Letters 483, Issue 1, L109-L113, arXiv:1810.06273, (2019), IF:9.265

8. Arnab Chakraborty , Nirupam Roy, Abhirup Datta, Samir Choudhuri, Kanan K. Datta , Prasun Dutta, Somnath Bharadwaj, Huib Intema, Madhurima Choudhury, Srijita Pal, Tirthankar Roy Choudhury , “Detailed study of ELAIS N1 field with the uGMRT -- II. Source Properties and Spectral Variation Of Foreground Power Spectrum from 300-500 MHz Observations”, MNRAS , 490, Issue 1, 243-259 (2019), IF: 5.357

9. Arnab Chakraborty, Abhirup Datta, Samir Choudhuri, Nirupam Roy, Huib Intema, Madhurima Choudhury, Kanan K. Datta, Srijita Pal, Somnath Bharadwaj, Prasun Dutta, Tirthankar Roy Choudhury , “Detailed study of the ELAIS N1 field with the uGMRT - I. Characterizing the 325 MHz foreground for redshifted 21 cm observations”, MNRAS 487, Issue 3, 4102-4113 (2019), IF: 5.357


  1. Ritaban Chatterjee, A. Roychowdhury, S. Chandra, and A. Sinha, “Possible Accretion Disk Origin of the Emission Variability of a Blazar Jet”, ApJL 859, L21-L26 (2018), IF: 8. 374
  1. P. Chakraborty, S. Chatterjee, A. Dutta , and A. D. Myers, ``Mean Occupation Function of High Redshift Quasars from the Planck Cluster Catalog'', Publications of the Astronomical Society of the Pacific 130, 988 (2018), IF:3.47
  1. K. Mitra, S. Chatterjee, M. DiPompeo, A. D. Myers, and Z. Zheng, ``Halo Occupation Distribution of Obscured Quasars: Revisiting the Unification Model'', MNRAS , 477, 1 (2018), IF: 5.231
  1. Saumyadip Samui, K. Subramanian, and R. Srianand, “Efficient cold outfows driven by cosmic rays in high-redshift galaxies and their global effects on the IGM”, MNRAS , 476, 1680 (2018)., IF: 5.231
  1. Sioree Ansar, Kanan K. Datta, Dhruba Dutta Chowdhury , Impact of inhomogeneous CMB heating of gas on the HI 21-cm signal during dark ages, Phys. Rev. D, 98, Issue 10, id.103505, (2018), IF: 4.368
  1. R. Mondal, S. Bharadwaj, Kanan K. Datta, “ Towards simulating and quantifying the light-cone EoR 21-cm signal” , MNRAS 474, 1390 (2018), IF: 5.231
  1. R. Ghara, G. Mellema, S. K. Giri, T. RoyChoudhury, Kanan K. Datta, andS.Majumdar, “Prediction of the 21-cm signal from reionization: comparison between 3D and 1D radiative transfer schemes”, MNRAS 476 , 1741 (2018), IF: 5. 231

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