ARIES Insitutional Digital Repositary (ARIES-IDR): Recent submissions

  • CCD photometry of the galactic star clusters Be 15, Be 71 and King 1 
    Lata, S.; Mohan, V.; Sagar, R. (2004-12)
    We present U BV RI CCD photometry of three open star clusters Be 15, Be 71 and King 1 for the first time. Base on these data, optical colour- magnitude diagrams (CMDs) for the stars in the clusters down to V = 22 ...
  • Optical observations and multiband modelling of the 
    Misra, K.; Resmi, L.; Pandey, S. B.; Bhattacharya, D.; Sagar, R. (Optical observations and multiband modelling of the, 2005-12)
    We present the CCD Cousins R band photometric observations of the afterglow of GRB 041006. The multiband afterglow evolution is modelled using an underlying `hard' electron energy spectrum with a p₁ ~ 1.3. The burst appears ...
  • Unusual optical quiescence of the classical BL Lac object PKS 0735+178 on intranight time-scale 
    Goyal, A.; Krishna-Gopal; Anupama, G. C.; Sahu, D. K.; Sagar, R.; Britzen, S.; Karouzos, M.; Aller, M. F.; Aller, H. D. (2009)
    We present the result of our extensive intranight optical monitoring of the well-known low- energy peaked BL Lac (LBL) object PKS 0735+178. This long-term follow-up consists of R-band monitoring for a minimum duration ...
  • GRB 000301C with peculiar afterglow emission 
    Sagar, R.; Mohan, V.; Pandey, S. B.; Pandey, A. K.; Stalin, C. S.; Castro-Tirado, A. J. (2000)
    The CCD magnitude in Johnson V and Cousins R and I photometric passbands are determined for GRB 000301C afterglow starting ~ 1.5 day after the γ – ray burst. In fact we provide the earliest optical observations for this ...
  • Stellar contents of the galactic giant HII region NGC 3603 
    Pandey, A. K.; Ogura, K.; Sekiguchi, K. (2000)
    We present CCD UBVRI and Hа photometry for the starburst cluster associated with the galactic giant HII region NGC 3603. The mean reddening of the cluster members comes out to be (E(B-V)) = 1.48±0.21 (s.d.). The surface ...
  • Sky transparently over Naini Tal: a retrospective study 
    Brijesh, K.; Sagar, R.; Rautela, B. S.; Srivastava, J. B.; Srivastava, R. K. (2000)
    We present an analysis of the atmospheric extinction coefficients measured during 1964-1999 in broad-band photometric passbands at U.P. State Observatory, Naini Tal. The extinction properties are also studied from the ...
  • CN and C₂ in Hyakutake (C/1996 B2) 
    Rautela, B. S.; Joshi, G. C.; Srivastava, J. B. (1998)
    CN (∆v=0) and C₂ (∆v = +1,0, -1) emission fluxes at 388.3, 469.5, 516.5 and 553.8 nm respectively and continuum fluxes at 484.0 nm have been analysed to get the production rates of molecular species CN and C₂ and dust in ...
  • Analysis of the 9th November 1990 flare 
    Joshi, A.; Uddin, W. (2000)
    In this paper we present complete two-dimensional measurements of the observed brightness of the 9th November 1990 Hα flares, using a PDS microdensitometer scanner and image processing software MIDAS. The resulting isophotal ...
  • Periodic variation of the North-South asymmetry of solar activity phenomena 
    Verma, V. K. (2000)
    We report here a study of various solar activity phenomena occurring in both north and south hemispheres of the Sun during solar cycles 8-23. In the study we have used sunspot data for the period 1832-1976, flare index ...
  • CCD photometry of the Markarian galaxy Mrk 1043 
    Joshi, S. C.; Rautela, B. S.; Joshi, G. C.; Srivastava, J. B. (1998)
    CCD photometric observations of Mrk 1043 have been obtained in BVRI filters. The integrated magnitude and colours of the galaxy have been estimated. The B-V colour of the Mrk 1043 is much bluer than the average colour of ...
  • Prolonged intranight optical quiescence of the classical BL Lac object PKS 0735+178 
    Goyal, A.; Gopal-Krishna; Anupama, G. C.; Sahu, D. K.; Sagar, R.; Britzen, S.; Karazous, M.; Aller, M. F.; Aller, H. D. (2009)
    We report our extensive intranight optical monitoring of the well known low-energy peaked (LBL) BL Lac object PKS 0735+178. This long-term follow-up consists of R-band monitoring for a minimum duration of ∼ 4 hours, on 17 ...
  • Middle atmospheric thermal structure obtained from Rayleigh lidar and TIMED/SABER observations: A comparative study 
    Guharay, A.; Nath, D.; Pant, P.; Pande, B.; Russell III, J. M.; Pandey, K. (2009)
    A novel measurement of seasonal variability of the middle atmospheric thermal structure has been carried out by comparing ground-based lidar and space-based TIMED/ SABER observations from a low-latitude station, Gadanki ...
  • Retrieval of columnar aerosol size distributions from spectral attenuation measurements over Central Himalayas 
    Dumka, U. C.; Sagar, R.; Pant, P. (2009)
    Extensive measurements of spectral aerosol optical depths (AODs) were made at Manora Peak, Nainital (29.4°N, 79.5°E, ~1958 m above mean sea level) in the central Himalayas, using a ten channel multi-wavelength solar ...
  • Physics of the GRB 030328 afterglow and its environment 
    Maiorano, E., ... et al. (including Pandey, S. B.) (2006)
    To investigate the physical nature of the afterglow emission. We report on the photometric, spectroscopic and polarimetric observations of the optical afterglow of Gamma–Ray Burst (GRB) 030328 detected by HETE-2. ...
  • Wide-field CCD photometry around nine open clusters 
    Sharma, S.; Pandey, A. K.; Ogura, K.; Mito, H.; Tarusawa, K.; Sagar, R. (2006-10)
    In this paper we study the evolution of the core and corona of nine open clusters using the projected radial density profiles derived from homogeneous CCD photometric data obtained with the 105 cm Kiso Schmidt telescope. ...
  • First ground-based mesospheric measurements from central Himalayas 
    Guharay, A.; Taori, A.; Bhattacharjee, S.; Pant, P.; Pande, B.; Pandey, K. (2009)
    First ground-based mesospheric temperature measurements from a central Himalayan station of India, Nainital (29.4°N and 79.5°E) have been carried out during January 2007 with the help of OH and O₂ airglow monitoring during ...
  • Multi-wavelength observations of the GRB080319B afterglow and the modeling constraints 
    Pandey, S. B., ... et al. (2009)
    We present observations of the GRB 080319B afterglow at optical, mm, and radio frequencies between a few hours and 67 days after the burst. We attempt to understand the nature of this extraordinarily bright explosion based ...
  • Characteristics of aerosol spectral optical depths over Nainital-a high-altitude station in the Shivalik ranges of Central Himalayas 
    Dumka, U. C. (2008-02)
  • A study of the old galactic star cluster Berkeley 32 
    Richtler, T.; Sagar, R. (2001)
    We present a 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'х13'. The colour-magnitude diagram ...
  • Seeing and microthermal measurements near Devasthal top 
    Stalin, C. S.; Sagar, R.; Pant, P.; Mohan, V.; Kumar, B.; Joshi, Y. C.; Yadav, R. K. S.; Joshi, S.; Chandra, R.; Durgapal, A. K.; Uddin, W. (2001)
    Results of the seening measurements carried out near Devasthal top on 43 nights during March to April 1999 are presented. Open air seeing measurements were carried out with the mirror about 2 m above the ground. This, in ...

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