6 papers
Broadband Spectral Analysis of 1ES2344+514: A Multi-epoch study
Kishor Chaudhury, Abhradeep Roy, Varsha R. Chitnis +2
We present the results of the multi-epoch broadband spectral study of 1ES 2344+514 and study the evolution of physical parameters. We used nearly simultaneous data obtained from 20…
Forecasting properties of detectable massive binary black hole mergers in the era of space based gravitational-wave detectors
Sourabh Magare, Abhinav Roy, Shasvath J. Kapadia +2
Gravitational waves (GWs) from massive black hole (MBH) mergers will provide a novel way to probe the high-redshift universe and are key to understanding galactic dynamics and evol…
Stellar Spectroscopy Using Diffraction Grating, CMOS Monochrome Sensor and Reflecting Telescopes
Abhinav Roy, Niti Singh
We present the design and testing of a compact stellar spectrometer developed for undergraduate and outreach applications. The spectrometer module, comprising an inexpensive 600 li…
Ross 458c: Gas Giant or Brown Dwarf?
William W. Meynardie, Michael R. Meyer, Ryan J. MacDonald +10
Ross 458c is a widely separated planetary mass companion at a distance of 1100 AU from its host binary, Ross 458AB. It is a member of a class of very low-mass companions at distanc…
Spectroscopic Characterization of LOFAR Radio-emitting M dwarfs
E. Koo, G. Stefansson, R. D. Kavanagh +20
Recent observations with the LOw Frequency ARray (LOFAR) have revealed 19 nearby M dwarfs showing bright circularly polarised radio emission. One of the possible sources of such em…
Data-driven discovery of the equations of turbulent convection
Christopher J. Wareing, Alasdair T. Roy, Matthew Golden +2
We compare the efficiency and ease-of-use of the Sparse Identification of Nonlinear Dynamics (SINDy) algorithm and Sparse Physics-Informed Discovery of Empirical Relations (SPIDER)…