512 citations · 3.2k across the 61 of their papers we have counts for
62 papers
Causal Analysis of Influence of the Solar Cycle and Latitudinal Solar-Wind Structure on Corotation Forecasts
Nachiketa Chakraborty, Harriet Turner, Mathew Owens +1
Studying solar wind conditions is central to forecasting impact of space weather on Earth. Under the assumption that the structure of this wind is constant in time and corotates wi…
Using Mutual Information to measure Time-lags from non-linear processes in Astronomy
Nachiketa Chakraborty, Peter Jan van Leeuwen
Measuring time lags between time-series or lighcurves at different wavelengths from a variable or transient source in astronomy is an essential probe of physical mechanisms causing…
Estimating longterm power spectral densities in AGN from simulations
Nachiketa Chakraborty, Frank M. Rieger
The power spectral density (PSD) represents a key property quantifying the stochastic or random noise type fluctuations in variable sources like Active Galactic Nuclei (AGN). In re…
A Framework for Causal Discovery in non-intervenable systems
Peter Jan van Leeuwen, Michael DeCaria, Nachiketa Chakaborty +1
Many frameworks exist to infer cause and effect relations in complex nonlinear systems but a complete theory is lacking. A new framework is presented that is fully nonlinear, provi…
Investigating Multiwavelength Lognormality with Simulations : Case of Mrk 421
Nachiketa Chakraborty
Blazars are highly variable and display complex characteristics. A key characteristic is the flux probability distribution function or flux PDF whose shape depends upon the form of…
Deviations from normal distributions in artificial and real time series: a false positive prescription
Paul J. Morris, Nachiketa Chakraborty, Garret Cotter
Time series analysis allows for the determination of the Power Spectral Density (PSD) and Probability Density Function (PDF) for astrophysical sources. The former of these illustra…