Publications

This is a complete list of publications by members of STAR Lab, IIT Bombay. For a list of publications by Varun Bhalerao, see his page.

Refereed papers

Sorted reverse chronologically
  1. Perley, Daniel A., Ho, Anna Y. Q., Yao, Yuhan, et al. Real-time discovery of AT2020xnd: a fast, luminous ultraviolet transient with minimal radioactive ejecta, MNRAS, 508, 5138, 2021. Group members: Harsh Kumar, Varun Bhalerao

  2. Singhal, Akshat, Bhalerao, Varun, Mahabal, Ashish A., et al. Deep co-added sky from Catalina Sky Survey images, MNRAS, 507, 4983, 2021. Group members: Akshat Singhal, Varun Bhalerao

  3. Mate, Sujay, Chattopadhyay, Tanmoy, Bhalerao, Varun, et al. The AstroSat mass model: Imaging and flux studies of off-axis sources with CZTI, JApA, 42, 93, 2021. Group members: Sujay Mate, Varun Bhalerao, Arvind Balasubramanian, Sourav Palit, Divita Saraogi

  4. Chattopadhyay, Tanmoy, Gupta, Soumya, Sharma, Vidushi, et al. Sub-MeV spectroscopy with AstroSat-CZT imager for gamma ray bursts, JApA, 42, 82, 2021. Group members: Sourav Palit, Varun Bhalerao

  5. Vibhute, Ajay, Bhattacharya, Dipankar, Mithun, N. P. S., et al. Imaging calibration of AstroSat Cadmium Zinc Telluride Imager (CZTI), JApA, 42, 76, 2021. Group members: Varun Bhalerao

  6. Sharma, Y., Marathe, A., Bhalerao, V., et al. The search for fast transients with CZTI, JApA, 42, 73, 2021. Group members: Yashvi Sharma, Aditi Marathe, Varun Bhalerao, Vedant Shenoy, Gaurav Waratkar, Drishika Nadella, Pranav Page, Pawan Hebbar

  7. Palit, Sourav, Anumarlapudi, Akash, & Bhalerao, Varun Revisiting the Earth's atmospheric scattering of X-ray/γ-rays and its effect on space observation: Implication for GRB spectral analysis, JApA, 42, 69, 2021. Group members: Sourav Palit, Akash Anumarlapudi, Varun Bhalerao

  8. Kumar, Abhay, Chattopadhyay, Tanmoy, Vadawale, Santosh V., et al. Exploring sub-MeV sensitivity of AstroSat-CZTI for ON-axis bright sources, JApA, 42, 67, 2021. Group members: Varun Bhlaerao

  9. Singhal, Akshat, Srinivasan, Rahul, Bhalerao, Varun, et al. Using collimated CZTI as all-sky X-ray detector based on Earth occultation technique, JApA, 42, 64, 2021. Group members: Akshat Singhal, Rahul Srinivasan, Varun Bhalerao

  10. Anusree, K. G., Bhattacharya, D., Rao, A. R., et al. AstroSat-CZTI as a hard X-ray pulsar monitor, JApA, 42, 63, 2021. Group members: Varun Bhalerao

  11. Ratheesh, A., Rao, A. R., Mithun, N. P. S., et al. A generalized event selection algorithm for AstroSat CZT imager data, JApA, 42, 37, 2021. Group members: Varun Bhalerao

  12. Andreoni, Igor, Coughlin, Michael W., Kool, Erik C., et al. Fast-transient Searches in Real Time with ZTFReST: Identification of Three Optically Discovered Gamma-Ray Burst Afterglows and New Constraints on the Kilonova Rate, ApJ, 918, 63, 2021. Group members: Harsh Kumar, Varun Bhalerao, Divita Saraogi, Kritti Sharma, Vedant Shenoy

  13. Gupta, Rahul, Oates, S. R., Pandey, S. B., et al. GRB 140102A: insight into prompt spectral evolution and early optical afterglow emission, MNRAS, 505, 4086, 2021. Group members: Varun Bhalerao

  14. Ahumada, Tomás, Singer, Leo P., Anand, Shreya, et al. Discovery and confirmation of the shortest gamma-ray burst from a collapsar, NatAs, 5, 917, 2021. Group members: Harsh Kumar, Varun Bhalerao

  15. Misra, K., Resmi, L., Kann, D. A., et al. Low frequency view of GRB 190114C reveals time varying shock micro-physics, MNRAS, 504, 5685, 2021. Group members: Harsh Kumar, Varun Bhalerao

  16. Abraham, Sheelu, Mukund, Nikhil, Vibhute, Ajay, et al. A machine learning approach for GRB detection in AstroSat CZTI data, MNRAS, 504, 3084, 2021. Group members: Varun Bhalerao

  17. Purdum, Josiah N., Lin, Zhong-Yi, Bolin, Bryce T., et al. Time-series and Phase-curve Photometry of the Episodically Active Asteroid (6478) Gault in a Quiescent State Using APO, GROWTH, P200, and ZTF, ApJL, 911, L35, 2021. Group members: Kritti Sharma, Harsh Kumar, Varun Bhalerao

  18. Bolin, Bryce T., Fernandez, Yanga R., Lisse, Carey M., et al. Initial Characterization of Active Transitioning Centaur, P/2019 LD2 (ATLAS), Using Hubble, Spitzer, ZTF, Keck, Apache Point Observatory, and GROWTH Visible and Infrared Imaging and Spectroscopy, AJ, 161, 116, 2021. Group members: Kunal Deshmukh, Varun Bhalerao

  19. Anumarlapudi, A., Bhalerao, V., Tendulkar, S. P., et al. Prompt X-Ray Emission from Fast Radio Bursts—Upper Limits with AstroSat. ApJ, 888(1), 40, 2020. Group members: Akash Anumarlapudi, Varun Bhalerao, Arvind Balasubramanian

  20. Andreoni, I., Goldstein, D. A., Kasliwal, M. M., et al., GROWTH on S190814bv: Deep Synoptic Limits on the Optical/Near-infrared Counterpart to a Neutron Star─Black Hole Merger. ApJ, 890(2), 131, 2020. Group members:

  21. Bolin, B. T., Lisse, C. M., Kasliwal, M. M., et al., Characterization of the Nucleus, Morphology, and Activity of Interstellar Comet 2I/Borisov by Optical and Near-infrared GROWTH, Apache Point, IRTF, ZTF, and Keck Observations. AJ, 160(1), 26, 2020. Group members: Kunal Deshmukh, Varun Bhalerao

  22. Sharma, V., Iyyani, S., Bhattacharya, D., et al. Spectropolarimetric analysis of prompt emission of GRB 160325A: jet with evolving environment of internal shocks. MNRAS, 493(4),5218, 2020. Group members: Varun Bhalerao

  23. Belloni, T. M., Bhattacharya, D., Caccese, P., et al. A variable-frequency HFQPO in GRS 1915+105 as observed with AstroSat. MNRAS, 489(1), 1037, 2019. Group members: Varun Bhalerao

  24. Bhargava, Y., Bhalerao, Varun, Ballhausen, R., et al. Explaining the asymmetric line profile in Cepheus X-4 with spectral variation across pulse phase. MNRAS, 482, 2902, 2019. Group members: Varun Bhalerao

  25. Chand, V., Chattopadhyay, T., Oganesyan, G., et al. AstroSat-CZTI Detection of Variable Prompt Emission Polarization in GRB 171010A. ApJ, 874, 70, 2019. Group members: Varun Bhalerao

  26. Chattopadhyay, T., Vadawale, S. V., Aarthy, E., et al. Prompt Emission Polarimetry of Gamma- Ray Bursts with the AstroSat CZT Imager. ApJ, 884(2), 123, 2019. Group members: Sujay Mate, Arvind Blasubramanian, Varun Bhalerao

  27. Coughlin, M. W., Ahumada, T., Anand, S., et al. GROWTH on S190425z: Searching Thousands of Square Degrees to Identify an Optical or Infrared Counterpart to a Binary Neutron Star Merger with the Zwicky Transient Facility and Palomar Gattini-IR. ApJ Letters, 885(1), L19, 2019. Group members: Harsh Kumar, Gaurav, Waratkar, Viraj Karambelkar, Yashvi Sharma, Varun Bhalerao

  28. Ho, A. Y. Q., Phinney, E. S., Ravi, V., et al. AT2018cow: A Luminous Millimeter Transient. ApJ, 871, 73, 2019. Group members: Varun Bhalerao

  29. Perley, D. A., Mazzali, P. A., Yan, L., et al. The fast, luminous ultraviolet transient AT2018cow: extreme supernova, or disruption of a star by an intermediate-mass black hole? MNRAS, 484, 1031, 2019. Group members: Tanazza Khanam, Harsh Kumar, Shubham Srivastava, Varun Bhalerao

  30. Sharma, V., Iyyani, S., Bhattacharya, D., et al. Time-varying Polarized Gamma-Rays from GRB 160821A: Evidence for Ordered Magnetic Fields. ApJ Letters, 882(1), L10, 2019. Group members: Varun Bhalerao

  31. Singh, A., Sahu, D. K., Anupama, G. C., et al. SN 2018hna: 1987A-like Supernova with a Signature of Shock Breakout. ApJ Letters, 882(2), L15, 2019. Group members: Harsh Kumar, Varun Bhalerao

  32. Chand, V., Chattopadhyay, T., Iyyani, S., et al. Violation of Synchrotron Line of Death by the Highly Polarized GRB 160802A. ApJ, 862, 154, 2018. Group members: Varun Bhalerao

  33. Mooley, K. P., Nakar, E., Hotokezaka, K., et al. A mildly relativistic wide-angle outflow in the neutron-star merger event GW170817. Nature, 554, 207, 2018. Group members: Varun Bhalerao

  34. Vadawale, S. V., Chattopadhyay, T., Mithun, N. P. S., et al. Phase-resolved X-ray polarimetry of the Crab pulsar with the AstroSat CZT Imager. Nature Astronomy, 2, 50, 2018. Group members: Varun Bhalerao

  35. Abbott, B. P., Abbott, R., Abbott, T. D., et al. Multi-messenger Observations of a Binary Neutron Star Merger. ApJ, 848, L12, 2017. Group members: Arvind Balasubramanian, Sujay Mate, Varun Bhalerao

  36. Hallinan,G., Corsi,A., Mooley,K.P.,et al. A radio counterpart to a neutron star merger. Science, 358, 1579, 2017. Group members: Varun Bhalerao

  37. Bhalerao, V., Bhattacharya, D., Vibhute, A., et al. The Cadmium Zinc Telluride Imager on AstroSat. Journal of Astrophysics and Astronomy, 38, 31, 2017. Group members: Varun Bhalerao

  38. Bhalerao, V., Kasliwal, M. M., Bhattacharya, D., et al. A Tale of Two Transients: GW 170104 and GRB 170105A. ApJ, 845, 152, 2017. Group members: Sujay Mate, Varun Bhalerao

  39. Kasliwal, M. M., Nakar, E., Singer, L. P., et al. Illuminating gravitational waves: A concordant picture of photons from a neutron star merger. Science, 358, 1559, 2017. Group members: Varun Bhalerao

  40. Rana, J., Singhal, A., Gadre, B., et al. An Enhanced Method for Scheduling Observations of Large Sky Error Regions for Finding Optical Counterparts to Transients. ApJ, 838,108, 2017. Group members: Javed Rana, Akshat Singhal, Varun Bhalerao

  41. Rao, A. R., Patil, M. H., Bhargava, Y., et al. Charged Particle Monitor on the Astrosat Mission. Journal of Astrophysics and Astronomy, 38, 33, 2017. Group members: Varun Bhalerao

  42. Srivastava, V., Bhalerao, V., Ravi, A. P., et al. Geographic and Annual Influences on Optical Follow-up of Gravitational Wave Events. ApJ, 838,46, 2017. Group members: Varun Bhalerao

Circulars

ATELs, GCNs, and other non-refereed publications

Sorted reverse chronologically.