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Browsing by Author "Prabhu, T. P"

Browsing by Author "Prabhu, T. P"

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  • The Early Spectrum of Nova Sagittarii 1977 
    Prabhu, T. P (Astronomical Society of India, 1977-09)
  • Embedded Clusters in Giant Extragalactic HII Regions.III.Extinction and Star Formation 
    Mayya, Y. D; Prabhu, T. P (American Astronomical Society, 1996-03)
    A study of star formation is carried out on 35 giant extragalactic H II regions (GEHRs) in seven galaxies using optical photometric data in BVR broad bands and in the emission line of Hα. Interstellar extinction, metallicity ...
  • Estimates of precipitable water vapour from GPS data over the Indian subcontinent 
    Jade, S; Vijayan, M. S. M; Gaur, V. K; Prabhu, T. P; Sahu, S. C (Elsevier, 2005-04)
    Water vapour plays a dominant role in the high-energy thermodynamics of the atmosphere, notably, the genesis of storm systems. However, its distribution is difficult to resolve by conventional means, since water vapour ...
  • Evidence of a Counterrotating Core in the Large Magellanic Cloud 
    Subramaniam, A; Prabhu, T. P (The American Astronomical Society, 2005-05)
    Stellar radial velocity data in the central region of the Large Magellanic Cloud (LMC) are used to estimate its radial velocity curve along various position angles (P.A.'s), including the line of nodes (LON). The central ...
  • Evolution of the optical spectrum of SN 1987a in the Large Magellanic Cloud 
    Ashoka, B. N; Anupama, G. C; Prabhu, T. P; Giridhar, S; Ghosh, K. K; Jain, S. K; Pati, A. K; Kameswara Rao, N (Indian Academy of Sciences, 1987-06)
    The evolution of the spectrum of SN 1987a is traced from 1987 February 26 to March 31. Based on the low-resolution spectroscopic data the authors identify the lines of H, He I, Na I, Fe II, Sc II, Ca II which are known to ...
  • The Evolution of the Peculiar Type Ia Supernova SN 2005hk over 400 Days 
    Sahu, D. K; Tanaka, M; Anupama, G. C; Kawabata, K. S; Maeda, K; Tominaga, N; Nomoto, K; Mazzali, P. A; Prabhu, T. P (The American Astronomical Society, 2008-06-10)
    UBVRI photometry and medium-resolution optical spectroscopy of the peculiar Type Ia supernova SN 2005hk are presented and analyzed, covering the premaximum phase to around 400 days after explosion. The supernova is found ...
  • Extragalactic star formation rate -- estimates at different wavelengths 
    Prabhu, T. P (Astronomical Society of India, 2012)
    The star formation rate (SFR) in galaxies is of prime importance in the study of formation and evolution of galaxies. Different methods have hence been evolved to estimate the current SFR in galaxies, using indicators at ...
  • Fine and ultrafine particles at a near–free tropospheric environment over the high-altitude station Hanle in the trans-Himalaya: new particle formation and size distribution 
    Krishna Moorthy, K; Sreekanth, V; Jai Prakash, C; Gogoi, M. M; Suresh Babu, S; Sobhan Kumar, K; Bagare, S. P; Bhatt, B. C; Gaur, V. K; Prabhu, T. P; Shantikumar, N. S (American Geophysical Union, 2011-10)
    Number-size distributions of ultrafine, fine, and accumulation mode aerosols in the size range 5–1300 nm have been measured regularly from the pristine, high-altitude (for 4520 m above mean sea level) station Hanle in the ...
  • Further spectroscopic observations of SN 1987A 
    Anupama, G. C; Prabhu, T. P; Ghosh, K. K; Ashoka, B. N; Giridhar, S (Elsevier, 1988)
    Spectroscopic observations of SN 1987a obtained during 1987 August 30 – September 8 from Vainu Bappu Observatory, Kavalur, are presented; the spectrum is compared and contrasted with the spectra recorded at earlier epochs. ...
  • Gain calibration of CCD systems at VBO 
    Prabhu, T. P; Mayya, Y. D; Anupama, G. C (Indian Academy of Sciences, 1992-03)
    The system gain of two CCD systems in regular use at the Vainu Bappu Observatory, Kavalur, is determined at a few gain settings. The procedure used for the determination of system gain and base-level noise is described in ...
  • Gamma-ray source observations with the HAGAR telescope system at Hanle in the Himalayas 
    Britto, R. J; Acharya, B. S; Chitnis, V. R; Cowsik, R; Dorji, N; Duhan, S. K; Gothe, K. S; Kamath, P. U; Mahesh, P. K; Nagesh, B. K; Naidu, A; Parmar, N. K; Prabhu, T. P; Rao, S. K; Saha, L; Saleem, F; Saxena, A. K; Sharma, S. K; Shukla, A; Singh, B. B; Srinivasan, R; Srinivasulu, G; Sudersanan, P. V; Tsewang, D; Upadhya, S. S; Vishwanath, P. R (Societe Francaise d’Astronomie et dAstrophysique, 2009-11)
    We have observed Crab nebula using the recently commissioned wavefront sampling high alti- tude (4270 m) array, HAGAR, at Hanle in the Ladakh region of the Himalayas. Regular source observations have begun with the ...
  • GMRT Observations of the 2006 outburst of the Nova RS Ophiuchi: First detection of emission at radio frequencies < 1.4 GHz 
    Kantharia, N. G; Anupama, G. C; Prabhu, T. P; Ramya, S; Bode, M. F; Eyres, S. P. S; O'Brien, T. J (University of Chicago Press, 2007-10)
    The first low radio frequency (<1.4 GHz) detection of the outburst of the recurrent nova RS Ophiuchi is presented in this Letter. Radio emission was detected at 0.61 GHz on day 20 with a flux density of 48 mJy and at 0.325 ...
  • GRB 021004: Optical Observations 
    Sahu, D. K; Bhatt, B. C; Anupama, G. C; Prabhu, T. P (NASA, 2002)
  • An H I shell-like structure associated with nova V458 Vulpeculae? 
    Nirupam Roy; Kantharia, N. G; Eyres, S. P. S; Anupama, G. C; Bode, M. F; Prabhu, T. P; O'Brien, T. J (Wiley-Blackwell, 2012-11)
    We report the radio detection of a shell-like H i structure in proximity to, and probably associated with, the nova V458 Vul. High spectral resolution observation with the Giant Metrewave Radio Telescope has made it possible ...
  • H-alpha variability in the quiescent spectrum of the recurrent nova T Coronae Borealis 
    Anupama, G. C; Prabhu, T. P (Blackwell Publishing, 1991-12)
    The emission lines in the quiescent spectrum of the recurrent nova T Coronae Borealis are variable. Optical spectra recorded during the years 1985-90 show one full cycle of high and low states. After removing the slow ...
  • H0 from ten well-measured time delay lenses 
    Rathna Kumar, S; Stalin, C. S; Prabhu, T. P (EDP Sciences, 2015-08)
    In this work, we present a homogeneous curve-shifting analysis using the difference-smoothing technique of the publicly available light curves of 24 gravitationally lensed quasars, for which time delays have been reported ...
  • High altitude (∼4520 m amsl) measurements of black carbon aerosols over Western trans-Himalayas: seasonal heterogeneity and source apportionment 
    Babu, S. S; Chaubey, Jai Prakash; Krishna Moorthy, K; Gogoi, M. M; Kompalli, S. K; Sreekanth, V; Bagare, S. P; Bhatt, B. C; Gaur, V. K; Prabhu, T. P; Shantikumar, N. S (American Geophysical Union, 2011-12)
    The first ever, year-round measurements of aerosol black carbon (BC) over the western part of trans- Himalayas are reported from Hanle (∼4520 m above mean sea level). The daily mean BC concentrations varied from as low as ...
  • High altitude gamma ray observatory at Hanle 
    Sripathi Acharya, B; Cowsik, R; Bhat, P. N; Chitnis, V. R; Vishwanath, P. R; Prabhu, T. P; Srinivasan, R (International Union of Pure and Applied Physics, 2003-07)
    We have carried out Monte Carlo simulations to study the nature of Cherenkov light pool generated by γ -ray and proton primaries for the altitude of Hanle(4515m amsl) in the Himalayas, the site of proposed HAGAR experiment. ...
  • Highly Reddened Type Ia Supernova SN 2004ab: Another Case of Anomalous Extinction 
    Chakradhari, N. K; Sahu, D. K; Anupama, G. C; Prabhu, T. P (Oxford University Press on behalf of the Royal Astronomical Society, 2018-02)
  • Himalayan Chandra telescope 
    Anupama, G. C; Prabhu, T. P (Indian Institute of Astrophysics, 2006-01)

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