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Browsing IIAP Publications by Title

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  • Supernova 1987A and its Implications to Neutrino Physics 
    Murthy, M. V. N (Indian Institute of Astrophysics, 1988)
    We review the reported neutrino events from the supernova SN 1987A and present a critical analysis of these events for their implications on the mechanism of stellar collapse as well as for neutrino physics.
  • Supernova 1987A in LMC : Infrared Observations 
    Bhatt, H. C (Indian Institute of Astrophysics, 1988)
    Results obtained from infrared observations of SN 1987A have been summarized. The supernova developed near-infrared excesses with a characteristic temperature ~1250 k beginning around March 15, 1987. Infrared speckle ...
  • Supernova 1987A: Ten years after 
    Datta, B (Indian Academy of Sciences, 1997-11)
  • Supernova 1991T in NGC 4527 
    Sivaraman, K. R; Prabhu, T. P; Anupama, G. C; Schmeer, P; Smith, H; Royer, R; Lubcke, G; Villi, M; Cortini, G (Smithsonian Astrophysical Observatory, 1991-04)
  • Supernova 1993J in M81 - Photometry and Spectrophotometry 
    Prabhu, T. P (Indian Academy of Sciences, 1995)
  • Supernova 2012aw – a high-energy clone of archetypal Type IIP SN 1999em 
    Bose, Subhash; Kumar, Brijesh; Sutaria, F. K; Kumar, Brajesh; Roy, Rupak; Bhatt, V. K; Pandey, S. B; Chandola, H. C; Sagar, R; Misra, Kuntal; Chakraborti, Sayan (Oxford University Press, 2013-08-11)
    We present densely sampled UBVRI/griz photometric and low-resolution (6–10 Å) optical spectroscopic observations from 4 to 270 d after explosion of a newly discovered Type II SN 2012aw in a nearby (∼9.9 Mpc) galaxy M95. ...
  • Supernova Shock 
    Thejappa, G (Indian Institute of Astrophysics, 1988)
    A Violent shock is formed at the site of the collision of inner and outer cores of a collasping star and the supernova explosion is born. Here we briefly review the evolution of the shock from its birth until its death.
  • Supernova SN 1987A - Rotation rate of the central pulsar 
    Bhatt, H. C; Datta, B (Royal Astronomical Society, 1989-04)
    Using available observational data on supernova SN 1987A, firm quantitative lower limits on the rotation period of the central pulsar (assuming the pulsar luminosity to power the supernova light curve) are derived. It is ...
  • Supernova SN 2012dn: a spectroscopic clone of SN 2006gz 
    Chakradhari, N. K; Sahu, D. K; Srivastav, S; Anupama, G. C (Oxford University Press on behalf of the Royal Astronomical Society, 2014-09-11)
    We present optical and UV analysis of the luminous Type Ia supernova SN 2012dn covering the period from ∼−11 to +109 d with respect to the B-band maximum, which occurred on JD 245 6132.89 ± 0.19, with an apparent magnitude ...
  • Supernovae and the AP Phenomenon 
    Rajamohan, R; Pati, A. K (International Astronomical Union, 1980)
  • Supernovae and the AP phenomenon 
    Rajamohan, R; Pati, A. K (Indian Academy of Sciences, 1980-12)
    We put forward evidence that relates the phenomenon of the chemically peculiar stars of the upper main sequence to Supernovae explosions in young clusters. In the Upper Scorpius region we find that a supernova shell has ...
  • Supernovae in early-type galaxies 
    Kochhar, R. K (Kluwer Academic Publishers, 1989-07)
    It is argued that all SNI come from short-lived stars and do not occur in a typical, isolationist, gas-free early-type galaxy. SNI occur only in those galaxies which accrete gas and form stars. SN properties of E/SOs are, ...
  • Supernovae study: Context of the 4-m International Liquid Mirror Telescope 
    Kumar, B; Pandey, S. B; Pandey, Kanhaiya L; Anapuma, G. C; Surdej, J (Societe Royale des Sciences de Liege, 2018-04)
    The upcoming 4-m International Liquid Mirror Telescope (ILMT) facility will perform deep imaging (in single scan g 0 ∼22 mag) of a narrow strip of sky each clear night in the Time Delayed Integration mode. A cadence of ...
  • Supersolid and solitonic phases in one-dimensional extended Bose-Hubbard model 
    Mishra, T; Pai, R. V; Ramanan, S; Luthra, M. S; Das, B. P (The American Physical Society, 2009-10)
    We report our findings on quantum phase transitions in cold bosonic atoms in a one dimensional optical lattice using the finite size density matrix renormalization group method in the framework of the extended Bose-Hubbard ...
  • Supersonic cloud collision. I 
    Anathpindika, S (EDP Sciences, 2009-09)
    It has long been suggested that shocks might play an important role in altering the form of the interstellar medium (ISM). Shocks enhance gas density and sufficiently dense regions may become self gravitating. Potential ...
  • Supersonic cloud collision. II 
    Anathpindika, S (EDP Sciences, 2009-09)
    Aims. In this second paper of the sequel of two papers, we continue to investigate the problem of molecular cloud (MC) collision. The companion paper to this one considered highly supersonic cloud collisions and examined ...
  • Surface compositions of R coronae borealis stars and extreme helium stars - some connections 
    Kameswara Rao, N (Astronomical Society of the Pacific, 2005-09)
    Abundances of R Coronae Borealis stars (RCBs) and Extreme Helium stars (EHes) are discussed. Recent estimates of the s-process elements in hot extreme helium stars show enhancements of lighter s-process elements (Y, Zr) ...
  • Survey for Li-rich K giants 
    Bharat Kumar, Y; Reddy, B. E (Cambridge University Press, 2010-04)
    We present results from an ongoing survey of searching Li-rich K giants among low mass giants along the Red Giant Branch (RGB). A sample of 2500 stars with accurate astrometry have been selected from Hipparcos catalogue ...
  • Survey of Li-rich giants among Kepler and LAMOST fields: determination of Li-rich giants' evolutionary phase 
    Raghubar Singh; Reddy, B. E; Bharat Kumar, Y; Antia, H. M (IOP Publishing, 2019-06-10)
    In this Letter, we report the discovery of 24 new super Li-rich (A(Li) ≥ 3.2) giants of He-core burning phase at the red clump region. Results are based on a systematic search of a large sample of about 12,500 giants common ...
  • Survey of O VI absorption in the Large Magellanic Cloud 
    Pathak, A; Pradhan, A. C; Sujatha, N. V; Murthy, J (Wiley-Blackwell, 2011-04)
    We present a survey of interstellar O VI absorption in the Large Magellanic Cloud (LMC) towards 70 lines of sight based on Far Ultraviolet Spectroscopic Explorer (FUSE) observations. The survey covers O VI absorption in a ...

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