About me and recent news

I am a NORDITA Fellow at the Nordita Institute and Stockholm University working on several aspects of gravitational-wave multi-messenger astrophysics, neutron stars, and transients more broadly. I did my PhD at Monash working under the supervision of Paul Lasky and Greg Ashton which was conferred in October 2021. I am a member of the LIGO Scientific Collaboration (LSC) and the Australian Research Council Centre of Excellence for gravitational-wave discovery, OzGrav.

Recent News

  • June 12th-June 26th: I am now in Aspen, attending a workshop on next generation gravitational-wave instruments!
  • June 4th: My paper with Paul Lasky on Multimessenger astronomy with a kHz-band gravitational-wave observatory was announced as an Editor’s Pick from the Journal’s Featured Article Collection.
  • June 3rd-June 12th: This week I am in California, visiting UC Berkeley.
  • May 31st: On the diversity of magnetar-driven kilonovae submitted to MNRAS. Check it out on the arXiv.
  • 28th May 2022: I was awarded the 2021 Vice-Chancellor’s Commendation for Doctoral Thesis Excellence! One prize is awarded across the Science Faculty at Monash. Incredibly grateful to my supervisors, mentors and colleagues.
  • 10-20th May 2022: I visited the GSSI Institute in L’Aquila and later attended the PHAROS conference in Rome. Really enjoyed the first in person conference since the Pandemic. Nice to see lots of familiar faces!
  • 6th May 2022: I was awarded the Robert Street Doctoral Prize for best PhD thesis at Monash!
  • 28th March 2022: Linking the rates of neutron star binaries and short gamma-ray bursts accepted in Phys Review D. Check it out on the arXiv.
  • 17th March 2022: Today, we released the alpha version of redback, a bayesian inference software package for electromagnetic transients. If you are interested in fitting and interpreting the observations of electromagnetic transients, check it out on github and consider contributing!
  • 3rd March 2022: Low-efficiency long gamma-ray bursts: A case study with AT2020blt published in to MNRAS. Check it out on arXiv.
  • January 24th 2022: Linking the rates of neutron star binaries and short gamma-ray bursts submitted to Phys Review D. Check it out on the arXiv.
  • January 22-28th 2022: This week I am in Switzerland attending the Saas-fee winter school on gravitational waves and multi-messenger astronomy. And Skiing!
  • December 2021: Multimessenger astronomy with a kHz-band gravitational-wave observatory accepted in PASA. Check it out on arXiv.
  • October 21st 2021: Multimessenger astronomy with a kHz-band gravitational-wave observatory submitted to PASA. Check it out on arXiv.
  • October 8th 2021: I did an interview on the highs and lows of my PhD with LIGO-India. Check it out on Youtube or the press release here
  • October 8th 2021: I am now officially Dr Nikhil Sarin!
  • July 18-23rd 2021: This week I am attending the AMALDI meeting. I will be giving a talk on the multimessenger signatures of binary neutron star mergers.
  • July 15th 2021: Today I submitted my PhD thesis titled The observational signatures of nascent neutron stars!! Hoping for a smooth review!
  • July 12-16th 2021: I am attending the Annual ASA meeting this week (in hybrid format). Looking forward to listening to all the exciting science happening across Australia.
  • 4th June 2021: Low-efficiency long gamma-ray bursts: A case study with AT2020blt submitted to MNRAS. Check it out on arXiv.
  • 1st June 2021: The evolution of binary neutron star post-merger remnants: a review accepted in General Relativity and Gravitation. Check it out on arXiv.
  • 24th May 2021: CDF XT1: The off-axis afterglow of a neutron star merger at z = 2.23 submitted to ApJL. Check it out on arXiv.
  • 23-26 March 2021: I gave a virtual talk at the THESEUS conference. See slides here
  • February 2021: Pleased to finally announce that I have accepted a postdoctoral fellowship at NORDITA. Looking forward to moving to Sweden in November.
  • January 2021: I passed my pre-submission milestone for my PhD! This is the last milestone before I submit my thesis in mid July.
  • November 27th 2020: The evolution of binary neutron star post-merger remnants: a review submitted to General Relativity and Gravitation. Check it out on arXiv.
  • November 23rd-27th 2020: This week I am attending the annual OzGrav retreat.
  • 16th November 2020: Today I am giving an invited talk at Caltech.
  • September 2020: Interpreting the X-ray afterglows of gamma-ray bursts with radiative losses and millisecond magnetars accepted in MNRAS.
  • August 2020: I gave a couple more remote talks this month. One at the Flatiron Institute, and another at the University of California, Berkeley.
  • August 2020: Submitted Interpreting the X-ray afterglows of gamma-ray bursts with radiative losses and millisecond magnetars to MNRAS. Check it out on arXiv.
  • July 2020: Over the last month I have given several talks remotely, this remote adventure concludes this week with talks at the University of Bath, Leicester, Gran Sasso and Swinburne. Pleased to be able to present my work at so many different places, unfortunate downside that it had to be remotely.
  • 3rd June 2020: Submitted Bayesian inference for compact binary coalescences with BILBY: Validation and application to the first LIGO–Virgo gravitational-wave transient catalogue to MNRAS. Check it out on arXiv
  • 8th March 2020: Gravitational waves or deconfined quarks: what causes the premature collapse of neutron stars born in short gamma-ray bursts? accepted in PRD.
  • 4th March 2020: My recent paper is in the news! see article here on the Monash website and here on OzGrav!
  • January 16th 2020: Submitted Gravitational waves or deconfined quarks: what causes the premature collapse of neutron stars born in short gamma-ray bursts? to PRD. Check it out on arXiv. This paper took a long time but it was well worth it.
  • November 17th-22nd November: This week I am in Lorne, Victoria for the Annual OzGrav retreat and ECR workshop.
  • November 8th: After a long productive trip in Japan my visit comes a conclusion. Met heaps of amazing people, started several collaborations, lots of exciting science to come.
  • October 27th-3rd November: This week, I am the Yamada meeting on gamma-ray-bursts in the beautiful city of Yokohama. I am presenting a couple of posters on my work on the population properties of long-lived neutron star merger remnants and extension of millisecond-magnetar models to include radiative losses.
  • September 24 - October 25th: This month, I am in Kyoto attending the Yukawa institute long-term workshop on Multi-messenger astrophysics in the gravitational-wave era
  • July 7-12th: Attended the ASA conference at the University of Queensland, Brisbane.
  • May 3: Conference proceedings of the Xiamen-Custipen workshop submitted (Lasky et al. 2019) Neutron Star Merger Remnants: Braking Indices, Gravitational Waves, and the Equation Of State
  • April: LIGO-Virgo Collaboration paper, Search for Gravitational Waves from a Long-lived Remnant of the Binary Neutron Star Merger GW170817 published in ApJ.
  • April: Bilby paper published in ApJS
  • February 18-22: Attended the LIGO Parameter Estimation group face-to-face meeting at Monash. Getting infrastructure ready for O3.
  • February 4-8: Attended the annual ANITA workshop and school at Swinburne. Presented work on X-ray afterglows.
  • December 18: X-ray afterglows of short gamma-ray bursts: Magnetar or fireball? accepted in ApJ.
  • December 4: At the Annual OzGrav retreat and ECR Workshop.
  • November 7: Bilby paper (Ashton et al. 2018) submitted to ApJS.
  • September 25: Submitted paper to ApJ, X-ray afterglows of short gamma-ray bursts: Magnetar or fireball?