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  • Kulijanishvili, V (Indian Institute of Astrophysics, 1997)
    Expedition of Abastumani Astrophysical Observatory jointly with Brazilian colleagues carried out two experiments at Nim Ka Thana. The first experiment was obtaining color picture of solar corona by means of 3 meter expedition ...
  • Jacob, W. S (Royal Astronomical Society, 1857-07)
  • Bose, D; Chitnis, V. R; Vishwanath, P. R; Majumdar, P; Rahman, M. A; Singh, B. B; Gupta, A. C; Acharya, B. S (Springer Netherlands, 2007-06)
    We report our observations on 4 AGNs viz, Mkn 421, Mkn 501, 1ES1426+428 and ON231 belonging to a sub-class called blazars. The observations were carried out using the Pachmarhi Array of Cherenkov Telescopes and span about ...
  • Jacob, W. S (Royal Astronomical Society, 1848-03)
  • Swarup, G; Sarkar, A (Astronomical Society of India, 2002-09)
    We describe observations and preliminary results of absorption by cold hydrogen gas (H I) associated with six radio galaxies and quasars (Table 1) which may provide valuable information about their host galaxies and ...
  • Fiala, Alan. D; Dunham, David. W; Dunham, Joan. B (Tata Institute of Fundamental Research, Bombay, 1980-06)
    Precise timings of Baily's beads activity were made from stations in India near the limits of the path of totality. The techniques and planned ues are outlined.
  • Ghosh, K. K; Apparao, K. M. V; Pukalenthi, S (The European Southern Observatory, 1999-01)
    From a survey of spectra of Bn/An stars, we have detected seven new Be stars: HR 1056 (A0Vn), 1544 (A1Vn), 2191 (A0Vnn), 2300 (B8Vn), 3134 (B9.5 Vn), 3878 (B0.5 IIIn) and 4552 (B9IIIpSi). H_alpha profiles of these stars ...
  • Vasundhara, R; Chakraborty, P; Rajamohan, R; Bhattacharyya, J. C; Som Sunder, G; Vivekananda Rao, P; Swaminathan, R; Lokanandham, B (Indian Academy of Sciences, 1995-02)
  • Bhatnagar, A; Jadhav, D. B; Jain, R. M; Shelke, R. N; Purohit, S. P (Astronomical Society of India, 1980-12)
    Observations using a multislit spectrograph at 5303A Fe XIV line were obtained during the 16 February, 1980 total solar eclipse, for velocity field determination in the solar coronal. A colour movie film of the flash ...
  • Jacob, W. S (Royal Astronomical Society, 1846-11)
  • Pradhan, A. C; Murthy, J; Pathak, A (IOP Publishing, 2011-12-10)
    We report the first observations of far-ultraviolet (FUV: 1000-1150 Å) diffuse radiation from the Small Magellanic Cloud (SMC) using observations from the Far-Ultraviolet Spectroscopic Explorer. The strength of FUV diffuse ...
  • Sagar, R (Astronomical Society of India, 2002)
    Broad band optical photometric observations of five Gamma-ray burst (GRB) afterglows (GRB 990123, GRB 991208, GRB 991216, GRB 000301c and GRB 000926) are taken from Nainital during 1999 and 2000. These in combination with ...
  • Evershed, John (Indian Institute of Astrophysics, Bangalore, 1910-06-22)
  • Kameswara Rao, N; Venugopal, V. R (Indian Academy of Sciences, 1985-06)
    The absolute magnitude M(v) of the hydrogen deficient binary Upsilon Sgr has been estimated as -4.8 + or - 1.0 from the distribution of the interstellar reddening, polarization, and interstellar lines of the surrounding ...
  • Gilra, D. P; Wesselius, P. R; Kameswara Rao, N (European Space Agency, 1980)
    IUE and ANS observations of the 'hot' companions of o Ceti є Aur, and  Pup are briefly discussed. Observations of HD 62001, the central star of the nebula VV 1-7 are also reported. The nebula VV 1-7 which is present on ...
  • Rouppe van der Voort, Luc H. M; Joshi, Jayant; Krikova, Kilian (EDP Sciences, 2024-03)
    Context. Magnetic reconnection in the deep solar atmosphere can give rise to enhanced emission in the Balmer hydrogen lines, a phenomenon known as Ellerman bombs (EBs). It is most common to observe EBs in the Hα and Hβ ...
  • Fleury, P (Astronomical Society of India, 2002)
    The CAT imaging telescope has been exploited since 1997 for the observation of Mrk-421 among other sources. After a brief review of the characteristics of the CAT telescope, the event reconstruction method will be described. ...
  • Bappu, M. K. V (1956-09)
  • Kaul, R. K; Bhat, C. L (Astronomical Society of India, 2002)
    The TACTIC imaging element has observed the extragalactic BL Lac object Mkn 421 for ~ 78h during Jan. - April 2001. Analysis of the overall data set, using the dynamic supercuts methodology, has revealed the presence of a ...
  • Le Gallou, R; Smith, D. A (Astronomical Society of India, 2002)
    Since CELESTE first began routine observations in November 1999 in the 50 GeV range Mrk 421 has been a prime target. Here we report the preliminary average integral flux measurement obtained with 31.5 hours of ON-source ...

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