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Browsing by Author "Gupta, S"

Browsing by Author "Gupta, S"

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  • Enhanced spectral absorption in a-silicon photovoltaic cell by inserting c-silicon quantum wells 
    Sircar, R; Tripathi, B; Saxena, A. K; Dibya, P; Srivastava, J. T; Gupta, S (Department of Applied Optics and photonics, University of Calcutta, 2009)
    Quantum well photovoltaic cells (QWPVCs) arc heterostructure devices intended to achieve higher efficiencies than conventional cells. Generally this concept is used in well defined III-V material systems. This paper ...
  • First evidence for anomalous thick crust beneath mid-Archean western Dharwar craton 
    Gupta, S; Rai, S. S; Prakasam, K. S; Srinagesh, D; Chadha, R. K; Priestley, K; Gaur, V. K (Indian Academy of Sciences, 2003-05-10)
    We report an anomalous present day crustal thickness of 43–52 km beneath the 3.4–3.0 Ga mid-Archean segment of the western Dharwar craton (WDC) undisturbed by Proterozoic events. In contrast, adjoining late-Archean ...
  • GONG site evaluation program at Udaipur Solar Observatory 
    Ambastha, A; Bhatnagar, A; Jain, R; Srivastava, N; Gupta, S; Sharma, R; Agrawal, G (Astronomical Society of India, 1991)
    The Global Oscillations Network Group (GONG) project to study the internal structure and dynamic of the sun is discussed. The GONG project will measure waves that penetrate throughout the sun's core. Power spectra of the ...
  • The nature of the crust in southern India: Implications for Precambrian crustal evolution 
    Gupta, S; Rai, S. S; Prakasam, K. S; Srinagesh, D; Bansal, B. K; Chandha, R. K; Priestley, K; Gaur, V. K (American Geophysical Union, 2003-04-16)
    We present crustal thickness and Poisson's ratio determinations from receiver function analyzes at 32 sites on the Archaean and Proterozoic terrains of South India. The crustal thickness in the late Archaean (2.5 Ga) Eastern ...
  • On the efficacy of recent crustal images of the Indian shield from 
    Rai, S. S; Gupta, S; Priestley, K; Gaur, V. K (Indian Academy of Sciences, 2004-09)
  • Probing into emission mechanisms of GRB 190530A using time-resolved spectra and polarization studies: synchrotron origin? 
    Gupta, Rahul; Gupta, S; Chattopadhyay, T; Lipunov, V; Castro-Tirado, A. J; Bhattacharya, D; Pandey, S. B; Oates, S. R; Kumar, Amit; Hu, Y-D; Valeev, A. F; Minaev, P. Yu; Kumar, H; Vinko, J; Dimple; Sharma, V; Aryan, A; Castellon, A; Gabovich, A; Moskvitin, A; Ordasi, A; Pal, A; Pozanenko, A; Zhang, B-B; Kumar, B; Svinkin, D; Saraogi, D; Vlasenko, D; Fernandez-Garcia, E; Gorbovskoy, E; Anupama, G. C; Misra, K; Sarneczky, K; Kriskovics, L; Castro-Tirado, M. A; Caballero-Garcia, M. D; Tiurina, N; Balanutsa, P; Lopez, R. R; Sanchez-Ramirez, R; Szakats, R; Belkin, S; Guziy, S; Iyyani, S; Tiwari, S. N; Vadawale, Santosh V; Sun, T; Bhalerao, V; Kornilov, V; Sokolov, V. V (Oxford University Press on behalf of Royal Astronomical Society, 2022-04)
    Multipulsed GRB 190530A, detected by the Gamma-ray Burst Monitor (GBM) and Large Area Telescope onboard Fermi, is the sixth most fluent GBM burst detected so far. This paper presents the timing, spectral, and polarimetric ...
  • Seismic imaging of crust beneath the Dharwar Craton, India, from ambient noise and teleseismic receiver function modelling 
    Borah, K; Rai, S. S; Prakasam, K. S; Gupta, S; Priestley, K; Gaur, V. K (Oxford University Press on behalf of the Royal Astronomical Society, 2014-05)
    We use cross-correlation of continuous 18 months (2009 February to 2010 August) ambient noise data recorded over 35 broad-band seismographs in the Archean Dharwar Craton and the adjoining granulite terrain to generate ...

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