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  • 3:40 AM, Tuesday, 16 Sep 2025

Department of Earth and Space Sciences
     
Resmi Lekshmi
Associate Professor
 
Office
Tel:+91-471-2568540
Fax:+91-471-2568462
Email:l.resmi@iist.ac.in













Education

PhD in Astrophysics. Joint Astronomy Program, Indian Institute of Science, Bangalore.


Experience
  • Post-doctoral fellow, Institut d’Astrophysique de Paris, France (2007-2009).
  • Post-doctoral fellow, Tata Institute of Fundamental Research (TIFR), Bombay, India (2010-2011)
  • Visiting researcher, Univ. of Nevada, Las Vegas, USA (2009, 2011).
  • Visitor, Anton Pannekoek Institute (API), Univ. of Amsterdam, The Netherlands (Sep 2019 - Jan 2020, on extraordinary leave from IIST)

Research Work / Area

My research focuses on energetic transients. I work mainly on the bright and short-lived explosions called Gamma-Ray Bursts (GRBs) and electromagnetic counterparts to Gravitational Wave events. I’ve recently dived into Fast Radio Bursts (FRBs), an exotic kind of cosmic signal, with a focus on their persistent radio emission. And more recently, I’ve hopped on the astronomy+ML bandwagon—because why not? I'm curious to see what machine learning can uncover in GRBs.



If you are bored, browse xkcd instaed


Transients are cool. If you haven't wandered off to xkcd yet, you can read more about my research in the next tabs.




 

 

 
 

I publish under my first name, following South Indian naming conventions. However, there are a few papers where I go by R. Lekshmi.

 

  1. Chakyar, S. P and Resmi, L. Inferring jet structure and viewing angles of GRB jets from early rising optical afterglows. AJ in review.
  2. Chakyar, S. P; Sarath Prabhavu, J; Resmi, L. Effect of viewing angle in gamma-ray burst properties. ApJ in review.
  3. Mondal, T; Chakraborty, S; Resmi, L; Bose, D. Follow-up of neutron star mergers with CTA and prospects for joint detection with gravitational-wave detectors. MNRAS in review. 

  4. Kapadia, S. J.; Dimple; Jain, D; Misra, K; Arun, K. G.; Lekshmi, R. Rates and beaming angles of gamma-ray bursts associated with compact binary coalescence, ApJ Letters, 2024, 976, 10.

  5. Ghosh, A; Vaishnava, C. S; Resmi, L et al., Search for merger ejecta emission from late-time radio observations of short GRBs using GMRT, MNRAS, 2024, 527, 8068.
  6. Mondal, T.; Pramanick, S.; Resmi, L.; & Bose, D. Probing Gamma-Ray Burst afterglows with the Cherenkov Telescope Array, MNRAS, 2023, 522, 5690.
  7. Dimple et al., including Resmi, L., Multiwavelength analysis of short GRB 201221D and its comparison with other high & low redshift short GRBs, MNRAS, 2022, 516, 1. 
  8. Mohan, S; Saleem, M; Resmi, L. Detectability of electromagnetic counterparts from neutron star mergers: prompt emission versus afterglow, MNRAS, 2022, 511, 2356.  
  9. Resmi, L; Vink, J; Ishwar-Chandra, C. H. Implications of the lowest frequency detection of the persistent counterpart of FRB121102, A&A, 2021, 655, 102.  
  10. Misra, K; Resmi, L; Kann, D. A., et al., Low-frequency view of GRB 1909114c reveals time varying shock microphysics, MNRAS, 2021, 504, 5685. 
  11. Saleem, M.; Resmi, L.; Arun, K. G.; Mohan, S.; On the Energetics of a Possible Relativistic Jet Associated with the Binary Neutron Star Merger Candidate S190425z, ApJ, 2020, 891, 130.
  12. MAGIC Collaboration; Acciari, V. A.; Ansoldi, S.; (including Resmi L.), Observation of inverse Compton emission from a long γ-ray burst, Nature, 2019, 575, 459.
  13. Michałowski, Michał J.; Kamphuis, P.; Hjorth, J.; (including Resmi L.), Nature of the unusual transient AT 2018cow from HI observations of its host galaxy, A&A, 2019, 627, 106.
  14. Anand, Nikhil; Shahid, Mustafa; Resmi, Lekshmi, Merger delay time distribution of extended emission short GRBs, MNRAS, 2018, 481, 4332.
  15. Lamb, Gavin P.; Mandel, Ilya; Resmi, Lekshmi, Late-time evolution of afterglows from off-axis neutron star mergers, MNRAS, 2028, 481, 2581.
  16. Resmi, L.; Schulze, S.; Ishwara-Chandra, C. H.; Misra, K.; Buchner, J.; De Pasquale, M.; Sánchez-Ramírez, R.; Klose, S.; Kim, S.; Tanvir, N. R.; O'Brien, P. T., Low-frequency View of GW170817/GRB 170817A with the Giant Metrewave Radio Telescope, ApJ, 2018, 867, 57.
  17. Saleem, M.; Pai, Archana; Misra, Kuntal; Resmi, L.; Arun, K. G., Rates of short-GRB afterglows in association with binary neutron star mergers, MNRAS, 2018, 475, 699.
  18. Saleem, M.; Resmi, L.; Misra, Kuntal; Pai, Archana; Arun, K. G., Exploring short-GRB afterglow parameter space for observations in coincidence with gravitational waves, MNRAS, 2018, 474, 5340.
  19. Kim, S.; Schulze, S.; Resmi, L., ALMA and GMRT Constraints on the Off-axis Gamma-Ray Burst 170817A from the Binary Neutron Star Merger GW170817, ApJ, 2017, 850, 21.
  20. Abbott, B. P.; Abbott, R.; Abbott, T. D.; (including Resmi L.), Multi-messenger Observations of a Binary Neutron Star Merger, ApJ, 2017, 848, 12.
  21. Lekshmi Resmi and Bing Zhang, Gamma Ray Burst reverse shock emission in early radio afterglows, ApJ, 2016, 825, 48.
  22. Lekshmi Resmi and Bing Zhang, Gamma Ray Burst prompt emission variability in synchrotron and synchrotron self Compton lightcurves, MNRAS, 2012, 426, 1385.
  23. Resmi, L.; Ishwara-Chandra, C. H.; Castro-Tirado, A. J.; Bhattacharya, D.; Rao, A. P.; Bremer, M.; Pandey, S. B.; Sahu, D. K.; Bhatt, B. C.; Sagar, R.; Anupama, G. C.; Subramaniam, A.; Lundgren, A.; Gorosabel, J.; Guziy, S.; de Ugarte Postigo, A.; Castro Cerón, J. M.; Wiklind, T.Radio, millimeter and optical monitoring of GRB 030329 afterglow: constraining the double jet model. A&A, 2005, 440, 477.
  • SERB EMR grant on the "Physics of radio bright Gamma-Ray Burst afterglows" (EMR/2016/007127).
  • SERB MATRICS grant on the "Structure of relativistic outflows" (2022).
  • SERB SIRE grant on "Kilonova remnants in the Milky way" (2022).
  • SERB core grant (2022), funding started in 2024.

 

♦Current members

  • PhD

1. Sreelakshmi P Chakyar 

2. Arushi Kumar

 

♦Past members

  • MS theses
  1. Surabhi Chandra (2024)
  2. Yashowardhani  (2023)
  3. Soumya Kohli (2022)
  4. Asif Muhammad (2021)
  5. Bharath Saiguhan (2021)
  6. Bhagyasree (2019)
  7. Sree Vaishnav Cherukuri (2019)
    Publications - (1) 2019Natur.575..459M  (2) 2024MNRAS.527.8068G
  8. Sreelakshmi Mohan (2018)
    Publications - (1) 2020ApJ...891..130S (2) 2022MNRAS.511.2356M
  9. Koustubh Bhattacharjee (2017)
  10. Suma N Murthy (2016)
 
  • BTech theses
  1. Ashish Mundara
  2. Rahul Dhanak 
  3. Prateek Sharma 
  4. Siddharth Mallik

  • Others
  1. Nikhil Anand & Mustafa Shahid (informal project)
    Publication - 2018MNRAS.481.4332A
  2. Tanishka Manjrekar, St. Xaviers Mumbai (MSc thesis)
  3. Meera J, Calicut Univ. (MSc thesis)