I am a Kavli Senior Fellow at the Kavli Institute for Cosmology at the University of Cambridge and at the Institute of Astronomy, University of Cambridge. Previously, I was a Nordita/OKC postdoctoral fellow at the Nordita Institute and the Oskar Klein Center at Stockholm University. My journey started at Monash University, where I completed my PhD in astrophysics in 2021.

I am a theoretical astrophysicist using a combination of analytical and numerical modelling combined with powerful statistical techniques such as Bayesian inference, hierarchical modelling, and machine learning to interpret observations. I am particularly interested in the multi-messenger astrophysics of neutron star mergers, the lightcurves of electromagnetic transients like GRBs, supernovae, TDEs, and kilonovae, and neutron stars in general.

I am a member of numerous collaborations working on electromagnetic transients and gravitational waves, including the LIGO Scientific Collaboration (LSC) and the Transients and Variables group in the Vera C. Rubin Observatory.

Recent News

• 17th December 2025: Sarin et al. 2025 - GRBs and Relativistic Transients in the 2040s submitted for the ESO Expanding Horizons call. Check it out on arXiv.
• 16th December 2025: Chrimes, Sarin, et al. 2025 - Luminous Fast Blue Optical Transients in the 2040s submitted for the ESO Expanding Horizons call. Check it out on arXiv.
• 16th December 2025: Nissanke, Sarin, et al. 2025 - Multi-messenger and time-domain astronomy in the 2040s submitted for the ESO Expanding Horizons call. Check it out on arXiv.
• 12th December 2025: Hoof et al. 2025 - JWST and HST observations of the host galaxy and supernova, SN 2024aihh in EP240801a at z=1.67 submitted. Beautiful JWST data of an Einstein Probe transient. Check it out on arXiv.
• 11th December 2025: Srinivasaragavan et al. 2025 - EP250827b/SN 2025wkm: An X-ray Flash-Supernova Powered by a Central Engine and Circumstellar Interaction submitted. Another exciting Einstein Probe discovery! Check it out on arXiv.
• 17th November 2025: Quirola-Vásquez et al. 2025 - Unveiling the nature of the Einstein Probe transient EP 241021a submitted. Check it out on arXiv.
• 13th October 2025: Gkini et al. 2025 - Eruptive mass loss less than a year before the explosion of superluminous supernovae. II. A systematic search for pre-explosion eruptions with VLT/X-shooter submitted to A&A. Check it out on arXiv.
• 10th October 2025: Poidevin et al. 2025 - SN 2021lwz: Another Exotic Luminous and Fast Evolving Optical Type Ic Broad-Lined Supernova ? submitted. Check it out on arXiv.
• 26th September 2025: Eyles-Ferris et al. 2025 - Can GRB 250702B be explained as the tidal disruption of a white dwarf by an intermediate mass black hole? Yes submitted. Check it out on arXiv.
• 26th September 2025: Gompertz et al. 2025 - JWST Spectroscopy of GRB 250702B: An Extremely Rare and Exceptionally Energetic Burst in a Dusty, Massive Galaxy at $z=1.036$ submitted. Check it out on arXiv.
• 8th-12th September 2025: This week I am in Hamburg, attending the rattle and shine workshop conference. I am giving a talk on BNS mergers.
• 2nd September 2025: Swain et al. 2025 - GRB 250704B: An Off-axis Short GRB with a Long-Lived Afterglow Plateau submitted. Check it out on arXiv.
• 1st-3rd September 2025: This week I am attending the Wetton workshop at Oxford. Lots of discussion here about the future of multi-messenger astronomy.
• 20th August 2025: Schulze et al. 2025 - Extremely stripped supernova reveals a silicon and sulfur formation site published in Nature! The paper even made it to the cover page.
• 19th August 2025: Moved to Cambridge, UK to start Kavli Senior Fellowship.
• 10th July 2025: Wise et al. 2025 - AT2019cmw: A highly luminous, cooling featureless TDE candidate from the disruption of a high mass star in an early-type galaxy submitted. Check it out on arXiv.
• 25th June 2025: Das et al. 2025 - Low-Luminosity Type IIP Supernovae from the Zwicky Transient Facility Census of the Local Universe. II: Lightcurve Analysis submitted to ApJ. Check it out on arXiv.
• 12th June 2025: Gangopadhyay et al. 2025 - SN 2023xgo: Helium-rich Type Icn or Carbon-Flash Type Ibn supernova? submitted to MNRAS. Check it out on arXiv.
• 4th June 2025: Sarin et al. 2025 - Surrogate models for lightcurves and photosphere properties of Type II supernovae submitted to MNRAS. Check it out on arXiv.
• 23th-27th June 2025: This week I am in Cork, attending the EAS meeting. I am giving an invited talk Fast X-ray transients, and another talk on kilonovae.
• 17th-24th May 2025: This week I am in Rio de Janeiro, attending the Shaping the future of time-domain astronomy in Rubin era conference. I am giving a talk on interpreting transient data with modelling.
• 29th April 2025: Schulze et al. 2025 - A cosmic formation site of silicon and sulphur revealed by a new type of supernova explosion accepted in Nature. Check it out on arXiv.
• 24th April 2025: Srinivasaragavan et al. 2025 - EP250108a/SN 2025kg: A Jet-Driven Stellar Explosion Interacting With Circumstellar Material submitted to ApJL. Check it out on arXiv.
• 11th April 2025: Eyles-Ferris et al. 2025 - The kangaroo’s first hop: the early fast cooling phase of EP250108a/SN 2025kg submitted to ApJL. Check it out on arXiv.
• 9th April 2025: Wallace and Sarin 2025 - A detailed dive into fitting strategies for GRB afterglows with contamination: A case study with kilonovae accepted in MNRAS. Check it out on arXiv.
• 19th March 2025: Lamb et al. 2025 - Prompt Periodicity in the GRB 211211A Precursor: Black-hole or magnetar engine? submitted to MNRAS. Check it out on arXiv.
• 18th March 2025: Miller et al. 2025 - The La Silla Schmidt Southern Survey submitted to PASP. Check it out on arXiv.
• 6th March 2025: Jiang et al. 2025 - EP240801a/XRF 240801B: An X-ray Flash Detected by the Einstein Probe and Implications of its Multiband Afterglow submitted to ApJ. Check it out on arXiv.
• 1st March 2025: Rosswog, Sarin et al. 2025 - Fast dynamic ejecta in neutron star mergers accepted in MNRAS. Check it out on arXiv.
• 6th January 2025: Srinivasaragavan et al. 2025 - Multiwavelength analysis of AT 2023sva: a luminous orphan afterglow with evidence for a structured jet published in MNRAS. Check it out on arXiv.

View full news archive (2020-2024)