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Browsing Publications of Astronomical Society of India by Subject "Individual"

Browsing Publications of Astronomical Society of India by Subject "Individual"

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  • Lopsided spiral galaxies 
    Jog, C. J (Astronomical Society of India, 2000)
    The light distribution in disks of many spiral galaxies is non-axisymmetric or 'lopsided' with a spatial extent much larger along one half of a galaxy than the other, as in M101. Recent observations show that 30% of spiral ...
  • Orbital Evolution of the Binary X-ray Pulsar Her X-1 
    Bhatt, N; Paul, B; Koul, C. L (Astronomical Society of India, 2003)
    We report the discovery of a break in the orbital period evolution of Her X-1, coincident with a recent anomalous low state.
  • Production of sulphur dimers (S2) in Comet C/1996 B2 (Hyakutake) 
    Saxena, P. P; Singh, M; Bhatnagar, S (Astronomical Society of India, 2003)
    The reaction mechanism involving the association of two sulphur atoms through ethylene (C2H4), the latter acting as a catalyst to produce cometary sulphur dimers (S2) (Saxena & Misra, 1995), has been employed to compute ...
  • A study of the old galactic star cluster Berkeley 32 
    Richtler, T; Sagar, R (Astronomical Society of India, 2001)
    We present new CCD photometry of the distant old open star cluster Berkeley 32 in Johnson V and Cousins I passbands. A total of ~ 3200 stars have been observed in a field of about 13? x 13?. The colour-magnitude diagram ...
  • X-ray Spectroscopy of the HMXB Pulsar GX 301-2 with Chandra 
    Mukherjee, U; Paul, B (Astronomical Society of India, 2003)
    We present analysis of X-ray spectra of the accreting pulsar GX 301-2, from two observations with the Chandra X-ray observatory made during different phases of its orbital period. Analysis of the zeroth order ACIS spectra ...

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