Author

Bitan Ghosal

results may include different authors with the same name

4 papers

Particle acceleration to PeV energies in Pulsar Wind Nebula: a two zone model

\textit{PeVatrons} are the extreme galactic accelerators capable of producing PeV particles. Recent observation of Large High Altitude Air Shower Observatory have detected UHE photons ($\geq$ 100 TeV) from 43 galactic sources. Detection of…

High Energy Astrophysical Phenomena · Physics 2026-03-03 Gunindra Krishna Mahanta , Nilay Bhatt , Bitan Ghosal , Subir Bhattacharyya

A White Paper on The Multi-Messenger Science Landscape in India

The multi-messenger science using different observational windows to the Universe such as Gravitational Waves (GWs), Electromagnetic Waves (EMs), Cosmic Rays (CRs), and Neutrinos offer an opportunity to study from the scale of a neutron…

High Energy Astrophysical Phenomena · Physics 2025-06-02 Samsuzzaman Afroz , Sanjib Kumar Agarwalla , Dipankar Bhattacharya , Soumya Bhattacharya , Subir Bhattacharyya , Varun Bhalerao , Debanjan Bose , Chinmay Borwanker , Ishwara Chandra C. H. , Aniruddha Chakraborty , Indranil Chakraborty , Sovan Chakraborty , Debarati Chatterjee , Varsha Chitnis , Moon Moon Devi , Sanjeev Dhurandhar , Amol Dighe , Bitan Ghosal , Sourendu Gupta , Arpan Hait , Md Emanuel Hoque , Pratik Majumdar , Nilmani Mathur , Harsh Mehta , Subhendra Mohanty , Reetanjali Moharana , Arunava Mukherjee , Suvodip Mukherjee , Dhruv Pathak , Tirthankar Roy Choudhury , Mohit Raj Sah , Prantik Sarmah , Krishna Kumar Singh , Rishi Sharma , Swarnim Shirke , Shriharsh P. Tendulkar , Gaurav Waratkar , Kuldeep Yadav

uGMRT observation of the unidentified PeVatron candidate LHAASO J2108+5157

Recent observations by the Large High Altitude Air Shower Observatory (LHAASO) detected Ultra High Energy (UHE) photons in the range 100 TeV to 1.4 PeV from twelve sources including Crab nebula. The detection of these photons demands the…

High Energy Astrophysical Phenomena · Physics 2024-12-20 Gunindra Krishna Mahanta , Subhashis Roy , Sagar Godambe , Bitan Ghosal , Nilay Bhatt , Subir Bhattacharyya

Unitary quantum phase operators for bosons and fermions: A model study on quantum phases of interacting particles in a symmetric double-well potential

We introduce unitary quantum phase operators for material particles. We carry out a model study on quantum phases of interacting bosons in a symmetric double-well potential in terms of unitary and commonly-used non-unitary phase operators…

Quantum Physics · Physics 2013-01-15 Biswajit Das , Bitan Ghosal , Subhasish Dutta Gupta , Bimalendu Deb