Publications of Astronomical Society of India: Recent submissions

  • Spectroscopy of supernovae 
    Anupama, G. C (Astronomical Society of India, 2000)
  • High resolution spectroscopy with a 10-m class telescope 
    Giridhar, S (Astronomical Society of India, 2000)
  • Effects of the solar radiation pressure and tidal forces on the rotational motion of a satellite 
    Saha, L. M; Khan, A; Sarma, T. P (Astronomical Society of India, 2000)
    Rotational motion of a satellite influenced by solar radiation pressure and tidal forces have been investigated. Melnikov's integral has been evaluated to establish the non-integrability of the equation of motion. The time ...
  • Generalised photogravitational restricted three body problem 
    Ghosh, R. N; Mishra, B. N (Astronomical Society of India, 2000)
    The problem is generalised in the sense that the rigid spherical shell, filled with homogeneous,incompressible fluid is taken as an oblate spheroid and the second body is radiating outside the shell. The equations of motion ...
  • 1998 activity of Leonid meteor shower 
    Lokanadham, B; Yellaiah, G; Kalyan Kumar, J; Bheemeshwer Rao, S; Chandrasekhar Rao, V (Astronomical Society of India, 2000)
    A group of five observers have participated in visual, photographic and MST radar observations of Leonid meteor shower during 15-20 November 1998 at National MST Radar Facility (NMRF), Gadanki (13.47 deg N, 79.18 deg E) ...
  • Spectrophotometric observations of comet Hale Bopp (C/1995 O1) 
    Rautela, B. S; Joshi, G. C; Srivastava, J. B (Astronomical Society of India, 2000)
    Haser Model production rates of CN and C2 in the coma of the comet Hale-Bopp (C/1995 O1) have been obtained. Molecular production rate, size of the nucleus and continuum flux at 484.0 nm have further been analysed to get ...
  • Surge activities on November 26-28, 1990 
    Uddin, W; Verma, V. K (Astronomical Society of India, 2000)
    We report here a study of 8 solar surges observed in H? emission on the west solar limb (active region NOAA 6368) on 26, 27 and 28 November 1990. Three surges were observed on 26 November of durations 35, 86 and 40 min at ...
  • Morphology of Ca II K bright points and their link to G band bright points 
    Krishnakumar, V; Venkatakrishnan, P; Srikanth, R (Astronomical Society of India, 2000)
    We present the results of a preliminary analysis of a time series of a sequence of Ca II K bright points and G band bright points observed co-spatially and co-temporally. Inspection of these images shows that the larger ...
  • Instrumentation of "Solar X-Ray Spectrometer" Low Energy Detector (SLD) - Proposed payload onboard Indian satellite 
    Vadher, N. M; Shah, A. B; Rajmal, J; Vats, H. O; Deshpande, M. R; Seetha, S; Murthy; Sharma, R. K; Umapathy (Astronomical Society of India, 2000)
    It is proposed to fly a high spectral and temporal resolution - "Solar X-Ray Spectrometer (SOXS)" onboard Indian satellite. The SOXS will provide the disk integrated flux in the energy range 2 keV-10 MeV. It is composed ...
  • Science from "Solar X-ray Spectrometer (SOXS)" - Proposed payload onboard Indian satellite 
    Jain, R; Rao, A. R; Deshpande, M. R; Dwivedi, B. N; Manoharan, P. K; Seetha, S; Vahia, M. N; Vats, H. O; Venkatakrishnan, P (Astronomical Society of India, 2000)
    It is proposed to fly a high spectral and temporal resolution "Solar X-ray Spectrometer (SOXS)" onboard Indian satellite to understand the mechanisms of energy release and particle acceleration in solar flares. The SOXS ...
  • Helium abundance in the solar envelope 
    Basu, S (Astronomical Society of India, 2000)
  • Fossil magnetic fields of the sun and stars 
    Hiremath, K. M; Gokhale, M. H (Astronomical Society of India, 2000)
    Using helioseismologically inferred internal rotation given by Dziembowski et al., 1989, in the previous work, we (Hiremath and Gokhale 1995, Hiremath 1995) modelled the steady (fossil) part of the poloidal magnetic field ...
  • Helioseismic constraints on the proton-proton reaction cross-section 
    Antia, H. M; Chitre, S. M (Astronomical Society of India, 2000)
  • Effect of a magnetic field on solar oscillation frequencies 
    Antia, H. M; Chitre, S. M (Astronomical Society of India, 2000)
  • Effect of asymmetry in peak profile on f-mode frequencies 
    Antia, H. M; Basu, S (Astronomical Society of India, 2000)
  • 4-day periodic variation in the Sun's meridional flow 
    Javaraiah, J (Astronomical Society of India, 2000)
    In latitude interval 20 deg -30 deg, the dependencies (i) 'initial' meridional motion, vini(?), of sunspot groups with life spans ??= 2-12 days, on ? of the spot groups, and (ii) mean meridional motion, v(?), of sunspot ...
  • On the power and frequency of p-modes in sunspots 
    Kumar, B; Tripathy, S. C; Jain, R; Deshpande, M. R (Astronomical Society of India, 2000)
    A time series of GONG Dopplergrams has been used to measure the velocity fluctuations in the sunspot and quiet photosphere simultaneously. The power spectrum analysis shows that the power of the predominant p-mode is reduced ...
  • GONG p-mode frequency changes with solar activity 
    Bhatnagar, A; Jain, K; Tripathy, S. C (Astronomical Society of India, 2000)
    In this paper, we present a correlation study of nine solar activity indices with p-mode frequency shifts obtained from the GONG data. It is found that the two are closely correlated and a linear relationship exits. Further, ...
  • A relation between frequency shift and the changes in activity indices 
    Jain, K; Tripathy, S. C; Kumar, B; Bhatnagar, A (Astronomical Society of India, 2000)
    We present a linear relation between the shift in p-mode frequencies and variation in two solar activity indices, namely the sunspot number and 10.7 cm radio flux. From this relation, an empirical model is constructed to ...
  • Magnetoacoustic gravity surface waves with flows 
    Satya Narayanan, A (Astronomical Society of India, 2000)
    The effect of uniform flows on the characteristics of magneto acoustic-gravity surface waves at a single interface when both the magnetic field and the propagation vector are parallel to each other is studied. The region ...

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