27 citations · 56 across the 6 of their papers we have counts for
6 papers
Origin of X-rays in the low state of the FSRQ 3C 273: Evidence of inverse Compton emission
Nibedita Kalita, Alok C. Gupta, Paul J. Wiita +2
We analyze the 2.5--10 keV X-ray spectra of the luminous quasar 3C 273 and simultaneous observations in UV wavelengths from XMM--Newton between 2000 and 2015. The lowest flux level…
Peak of spectral energy distribution play an important role in intra-day variability of Blazars?
Alok C. Gupta, Nibedita Kalita, Haritma Gaur +1
Blazars can be divided into two sub-classes namely high energy and low energy peaked blazars. In spectral energy distribution, the first synchrotron hump of the former class peaks…
Multi-band variability in the blazar 3C 273 with XMM-Newton
Nibedita Kalita, Alok C. Gupta, Paul J. Wiita +2
We have undertaken a nearly simultaneous optical/UV and X-ray variability study of the flat spectrum radio quasar, 3C 273 using data available from the XMMNewton satellite missi…
Studies of Quasi Periodic Oscillations in the Black Hole Transient XTE J 1817-330
Jayashree Roy, P. C. Agrawal, B. Paul +1
We have used archival RXTE PCA data to investigate timing and spectral characteristics of the transient XTE J1817-330. The data pertains to 160 PCA pointed observations made during…
Automated star-galaxy segregation using spectral and integrated band data for TAUVEX/ASTROSAT satellite data pipeline
Archana Bora, Ranjan Gupta, Harinder P. Singh +1
We employ an Artificial Neural Network (ANN) based technique to develop a pipeline for automated segregation of stars from the galaxies to be observed by Tel-Aviv University Ultra-…
A 3D Automated Classification Scheme for the TAUVEX data pipeline
Archana Bora, Ranjan Gupta, Harinder P. Singh +3
In order to develop a pipeline for automated classification of stars to be observed by the TAUVEX ultraviolet space Telescope, we employ an artificial neural network (ANN) techniqu…