16 papers
A Search for GeV Emission from Magnetar Giant Flare Candidates with Fermi-LAT
Vikas Chand, Michela Negro, Nicola Omodei +5
The discovery of delayed GeV emission from the extragalactic magnetar giant flare (MGF) GRB 200415A, located in the nearby Sculptor galaxy, revealed for the first time that these r…
Reappraisal of the Constraints on Heavy Axion-like Particles from Gamma-Ray Bursts
Christopher V. Cappiello, Saurav Das, P. S. Bhupal Dev +2
We reassess existing limits and derive new constraints on heavy axion-like particle (ALP) coupling to photons using gamma-ray bursts (GRBs). ALPs can be produced in the hot dense f…
Quantum Information as a New Lens for Precision Neutrino Physics
Khushboo Dixit, Ritam Kundu, Papia Panda +2
We present a quantum-information-theoretic study of three-flavor neutrino oscillations in long-baseline experiments by mapping flavor states to qubit-like representations and quant…
Investigating peculiar prompt emission properties of the multi-Peaked GRB 250129A
Ankur Ghosh, Tamador K. M. Aldowma, Soebur Razzaque
We present a high-energy spectral analysis of GRB 250129A, which was triggered by the Swift-BAT. The burst exhibits a complex, multi-peaked temporal structure characterized by two…
Photometric and late-time spectropolarimetric observations of GRB 250129A afterglow
A. Ghosh, S. Razzaque, J. Barnard +15
Gamma-Ray Burst (GRB) afterglows arise from the interaction of relativistic ejecta with the circumburst medium and are observed across the electromagnetic spectrum. Afterglow polar…
Catching TeV emission from GRB 221009A and alike with LHAASO, LACT and SWGO
Yunlei Huang, Sujie Lin, Soebur Razzaque +2
Gamma-Ray Bursts (GRBs) are the most energetic electromagnetic explosions in the universe. Recently, the Large High Altitude Air Shower Observatory (LHAASO) reported the breakthrou…