J. Venkata Aditya
Current Organizations / Institutes
The organizations/institutes from the scholar's latest article
Research Subjects
J. Venkata Aditya has a total of 28 co-authors. Here are the top co-authors by number of shared publications:
- Dipankar Bhattacharya
Department of Physics Ashoka University 131029 Sonepat Haryana India
2 shared publications - Divita Saraogi
Department of Physics, IIT Bombay, Mumbai, India
2 shared publications - Santosh V. Vadawale
Physical Research Laboratory
2 shared publications - Soumya Gupta
Homi Bhabha National Institute
2 shared publications - Suman Bala
Department of Physics, Indian Institute of Technology Bombay, Mumbai, India
2 shared publications - Tanmoy Chattopadhyay
Kavli Institute of Particle Astrophysics and Cosmology, Stanford University, 452 Lomita Mall, Stanford, CA 94305, USA
2 shared publications
Latest Publications
- 27 June 2025
- Published by Springer Nature in Journal of Astrophysics and Astronomy
- Vol. 46 (2) , 1-9
Investigating polarization characteristics of GRB 200503A and GRB 201009A
- 27 June 2025
- Published by Springer Nature in Journal of Astrophysics and Astronomy
- Vol. 46 (2) , 1-9
Investigating polarization characteristics of GRB 200503A and GRB 201009A
- Open Access
- 14 February 2024
- Published by Oxford University Press (OUP) in Monthly Notices of the Royal Astronomical Society
- Vol. 530 (2) , 1386-1393
Localization of gamma-ray bursts using AstroSat Mass Model
The Cadmium Zinc Telluride Imager (CZTI) aboard AstroSat has good sensitivity to Gamma Ray Bursts (GRBs), with close to 600 detections including about 50 discoveries undetected by other missions. However, CZTI was not designed to be a GRB monitor and lacks localisation capabilities. We introduce a new method of localising GRBs using ‘shadows’ cast on the CZTI detector plane due to absorption and scattering by satellite components and instruments. Comparing the observed distribution of counts on the detector plane with simulated distributions with the AstroSat Mass Model, we can localise GRBs in the sky. Our localisation uncertainty is defined by a two-component model, with a narrow Gaussian component that has close to 50% probability of containing the source, and the remaining spread over a broader Gaussian component with an 11.3 times higher σ. The width (σ) of the Gaussian components scales inversely with source counts. We test this model by applying the method to GRBs with known positions and find good agreement between the model and observations. This new ability expands the utility of CZTI in the study of GRBs and other rapid high-energy transients.
- 14 February 2024
- Published by Oxford University Press (OUP) in Monthly Notices of the Royal Astronomical Society
- Vol. 530 (2) , 1386-1393
Open AccessLocalization of gamma-ray bursts using AstroSat Mass Model
The Cadmium Zinc Telluride Imager (CZTI) aboard AstroSat has good sensitivity to Gamma Ray Bursts (GRBs), with close to 600 detections including about 50 discoveries undetected by other missions. However, CZTI was not designed to be a GRB monitor and lacks localisation capabilities. We introduce a new method of localising GRBs using ‘shadows’ cast on the CZTI detector plane due to absorption and scattering by satellite components and instruments. Comparing the observed distribution of counts on the detector plane with simulated distributions with the AstroSat Mass Model, we can localise GRBs in the sky. Our localisation uncertainty is defined by a two-component model, with a narrow Gaussian component that has close to 50% probability of containing the source, and the remaining spread over a broader Gaussian component with an 11.3 times higher σ. The width (σ) of the Gaussian components scales inversely with source counts. We test this model by applying the method to GRBs with known positions and find good agreement between the model and observations. This new ability expands the utility of CZTI in the study of GRBs and other rapid high-energy transients.