36 citations · 109 across the 4 of their papers we have counts for
4 papers
Monthly sunspot number time series analysis and its modeling through autoregressive artificial neural network
Goutami Chattopadhyay, Surajit Chattopadhyay
This study reports a statistical analysis of monthly sunspot number time series and observes non homogeneity and asymmetry within it. Using Mann-Kendall test a linear trend is reve…
Multivariate forecast of winter monsoon rainfall in India using SST anomaly as a predictor: Neurocomputing and statistical approaches
Goutami Chattopadhyay, Surajit Chattopadhyay, Rajni Jain
In this paper, the complexities in the relationship between rainfall and sea surface temperature (SST) anomalies during the winter monsoon (November-January) over India were evalua…
Acceleration of the Universe in Presence of Tachyonic field
Surajit Chattopadhyay, Ujjal Debnath, Goutami Chattopadhyay
In this letter, we have assumed that the Universe is filled in tachyonic field with potential, which gives the acceleration of the Universe. For certain choice of potential, we hav…
A probe into the chaotic nature of total ozone time series by Correlation Dimension method
Goutami Bandyopadhyay, Surajit Chattopadhyay
Present paper deals with mean monthly total ozone concentration over Arosa, Switzerland. The basic rationale is to investigate the existence of chaos within the relevant time serie…