Research Area:

• Neutron Stars

• Black Holes

• X-ray Binaries

• Ultraluminous X-ray sources (ULXs)

• Ultraluminous X-ray Pulsars (ULPs)

• Spectral properties of BH/NS XRBs: Spectral evolution, Accretion Physics, Thermonuclear X-ray bursts

• Timing properties of BH/NS XRBs: Quasi-Periodic Oscillations, Fast X-ray variability

• Multiwavelength data analysis

Publications: 

1.  Broad-band spectro-temporal investigation of neutron star low-mass X-ray binary GX 349+2

Monthly Notices of the Royal Astronomical Society, Volume 523, Issue 2, August 2023, Pages 2788–2806

 https://doi.org/10.1093/mnras/stad1606

2. Probing spectral and temporal evolution of the neutron star low-mass X-ray binary 4U 1724–30 with AstroSat.

Monthly Notices of the Royal Astronomical Society, Volume 509, Issue 3, January 2022, Pages 3989–4007

     https://doi.org/10.1093/mnras/stac908

3. Broad-band time-resolved spectroscopy of thermonuclear X-ray bursts from 4U 1636−536 using AstroSat.

Monthly Notices of the Royal Astronomical Society, Volume 509, Issue 3, January 2022, Pages 3989–4007

  https://doi.org/10.1093/mnras/stab2838

4. Thermonuclear X-ray Bursts with late secondary peaks observed from 4U 1608-52.

  ApJ, 910, 37 (2021) 

       10.3847/1538-4357/abe1ae

5. Simultaneous X-ray/UV observations of ultraluminous X-ray source Holmberg II X-1 with Indian space mission AstroSat.

        Astrophysical Bulletin volume 77, pages 231–245 (2022)  September 30, 2022

       https://doi.org/10.1134/S1990341322030129

6. Burst - Disk Interaction in 4U 1636–536 as observed by NICER. 

The Astrophysical Journal, Volume 935, Number 2

doi.org/10.3847/1538-4357/ac8106 

7. An elog-KdVB dynamics in non-thermal solar plasmas, Pralay Kumar Karmakar and  Unnati Kashyap.

     EPL, 124(2018)39001, 2018.

Observing Proposals:

• “AstroSat ToO observations of the newly detected outburst of NS LMXB XTE J1701–462.” 

-PI, AstroSat ToO proposal, 2022

• “Spectro-timing studies of continuum and burst emission from LMXB 4U 1608-52 using AstroSat.” 

-PI, AstroSat ToO proposal, 2020.

• “Soft X-ray observations of X-ray bursts from selected Low Mass X-ray Binaries with NICER.”

- Co-I, NICER Anticipated ToO proposal, 2020.

Projects Co-mentored:

• Investigation of the emission variability behavior of blackhole X-ray binary 4U 1630-47 using NICER telescope.

-Mr. Antariksha  Mitra, IAS (Indian  Academy  of  Sciences)  summer  project  student  at  IIT  Indore, May-July, 2021.

• Investigations of thermonuclear bursts from NS Low Mass X-ray Binary using NICER.

  -Mr. Vikrant Londhe, M.Sc in Astronomy, 2020-2021.

•  Study of Swift J0243.6+6124 towards understanding the emission behaviour of Ultra-luminous X-ray sources (ULXs). 

 -Mr. Biki Ram, M.Sc in Astronomy, 2019-2020.