Gravitational Waves & Transients

Interstellar Medium, Dynamical modeling of galaxies, Dark matter distribution in galaxies, Circumgalactic medium.

• Fast Radio Bursts (FRBs)

Fast Radio bursts are extremely enigmatic events exhibiting an intense burst of radio emission in a very short span of time (fraction of seconds). Their origin still remain a mystery even though recent observations argue for a magnetar origin scenario. The characteristic, radiative behaviour, and comparison with pulsar like emission poses numerous compelling scientific questions. The extragalactic origin of the FRBs also presents an excellent way of utilizing them as cosmological probes.  

• Gamma Ray bursts (GRBs)

Gamma-Ray bursts are one of the most luminous astronomical phenomena originating from either the collapse of very massive stars or the meger of two neutron stars. Investigation of GRBs can offer clues on their emission mechanism and provide a essential tool for investigating the electromagnetic counterpart of gravitational waves generated during the binary neutron star mergers. Investigating the progenitors, radiation mechanisms, and afterglows of GRBs helps to understand their role as powerful probes of the high-energy universe.

• Gravitational Waves, Kilonovae, and Binary Neutron Star (BNS) Mergers
  Exploring compact object mergers through gravitational-wave detections and their electromagnetic counterparts, with a focus on high-energy emission from kilonovae and r-process nucleosynthesis.  Employing pulsar timing arrays to search for low-frequency gravitational waves (Nano-Hertz Gravitational Waves (nHz GWs) arising from supermassive black hole binaries and galaxy evolution.

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