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Hrishikesh Chakrabarty on Muck Rack

Hrishikesh Chakrabarty

As seen in: Physical Review B, EPJ
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Articles

Running gravitational constant induced dark energy as a solution to

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By Astana IT, Hrishikesh Chakrabarty, Tilek Zhumabek, Azamat Mukhamediya
| EPJ
Eur. Phys. J.
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Observational properties of coherent quantum black holes

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By Hrishikesh Chakrabarty, Daniele Malafarina, Abdybek Urmanov
| Physical Review B
We consider null and timelike geodesics around a spherically symmetric, nonrotating coherent quantum black hole (CQBH). The classical limit of the geometry of a CQBH departs from that of the Schwarzschild spacetime at short scales and depends on one parameter Rs which can be interpreted as the physical radius of the “quantum” core. We study circular orbits, photon rings, and lensing effects and compare them with the Schwarzschild metric.
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Constraining deviations from spherical symmetry using $\ensuremath{\gamma}$-metric

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By Yong Tang, Hrishikesh Chakrabarty
| Physical Review B
Abstract The γ-spacetime metric is a static and axially symmetric vacuum solution of the Einstein equation. This spacetime represents a naked singularity and it has an extra parameter γ which signifies deviations from spherical symmetry. In this work, we study the possibility of constraining the deformation parameter with astrophysical observations.
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