Resonance phenomena in discrete systems with bichromatic input signal (2007)
Harikrishnan, K. P., Ambika, G.
We undertake a detailed numerical study of the twin phenomena of stochastic and vibrational resonance in a discrete model system in the presence of bichromatic input signal. A two parameter cubic map...
Simultaneous and Sequential Synchronisation in Arrays (2006)
We discuss the possibility of simultaneous and sequential synchronisation in vertical and horizontal arrays of unidirectionally coupled discrete systems. This is realized for the specific case of two...
Intermittency and Synchronisation in Gumowski-Mira Maps (2006)
The Gumowski-Mira map is a 2-dimensional recurrence relation that provide a large variety of phase space plots resembling fractal patterns of nature. We investigate the nature of the dynamical states...
Stochastic resonance as a filter for signal detection from multisignal inputs (2006)
We undertake a detailed numerical study of the phenomenon of stochastic resonance with multisignal inputs. A bistable cubic map is used as the model and we show that it combines the features of a...
Synchronisation schemes for two dimensional discrete systems (2006)
In this work we consider two models of two dimensional discrete systems subjected to three different types of coupling and analyse systematically the performance of each in realising synchronised...
The non-linear behavior of the black hole system GRS 1915+105 (2006)
Misra, R., Harikrishnan, K. P., Ambika, G., Kembhavi, A. K.
Using non-linear time series analysis, along with surrogate data analysis, it is shown that the various types of long term variability exhibited by the black hole system GRS 1915+105, can be...
A non subjective approach to the GP algorithm for analysing noisy time series (2006)
Harikrishnan, K. P., Misra, R., Ambika, G., Kembhavi, A. K.
We present an adaptation of the standard Grassberger-Proccacia (GP) algorithm for estimating the Correlation Dimension of a time series in a non subjective manner. The validity and accuracy of this...
The chaotic behavior of the black hole system GRS 1915+105 (2004)
Misra, R., Harikrishnan, K. P., Mukhopadhyay, B., Ambika, G., Kembhavi, A. K.
A modified non-linear time series analysis technique, which computes the correlation dimension $D_2$, is used to analyze the X-ray light curves of the black hole system GRS 1915+105 in all twelve...
Bubbling and bistability in two parameter discrete systems (2000)
We present a graphical analysis of the mechanisms underlying the occurrences of bubbling sequences and bistability regions in the bifurcation scenario of a special class of one dimensional two...