Explaining temporal variations in the jet position angle of the blazar OJ 287 using its binary black hole central engine model

no code implementations • 9 Mar 2021 • Lankeswar Dey, Mauri J. Valtonen, A. Gopakumar, Rocco Lico, Jose L. Gomez, Abhimanyu Susobhanan, S. Komossa, Pauli Pihajoki

Our Bayesian analysis shows that the BBH central engine model, primarily developed from optical observations, can also broadly explain the observed temporal variations in the radio jet of OJ 287 at frequencies of 86, 43, and 15 GHz.

High Energy Astrophysical Phenomena General Relativity and Quantum Cosmology

pinta: The uGMRT Data Processing Pipeline for the Indian Pulsar Timing Array

no code implementations • 6 Jul 2020 • Abhimanyu Susobhanan, Yogesh Maan, Bhal Chandra Joshi, T. Prabu, Shantanu Desai, Yashwant Gupta, A. Gopakumar, Neelam Dhanda Batra, Arpita Choudhary, Mayuresh P. Surnis, Lankeswar Dey, Jaikhomba Singha, K. Nobleson, Manjari Bagchi, Avishek Basu, Suryarao Bethapudi, Kishalay De, Raghav Girgaonkar, M. A. Krishnakumar, P. K. Manoharan, Arun Kumar Naidu, Dhruv Pathak, Sai Chaitanya Susarla

We introduce pinta, a pipeline for reducing the upgraded Giant Metre-wave Radio Telescope (uGMRT) raw pulsar timing data, developed for the Indian Pulsar Timing Array experiment.

Instrumentation and Methods for Astrophysics High Energy Astrophysical Phenomena