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

  • Optical observations of the bright long duration peculiar GRB 021004 afterglow 
    Pandey, S. B., ... et al. (2003)
    The CCD magnitudes in Hohnson B, V and Cousins R and I photometric passbands are determined for the bright long duration GRB 021004 afterglow from 2002 October 4 to 16 starting ~ 3 hours after the γ-ray burst. Light curves ...
  • CCD photometry of the Wolf Rayet galaxy Mink 
    Singh, M.; Sanwal, B. B.; Stalin, C. S. (2000)
    We present here the results from B and V photometric observations of the Wolf Rayet galaxy Mink which was observed through the 104 cm telescope of U. P. State Observatory using 1K × 1K CCD. The surface brightness profiles ...
  • Optical and near-infrared observations of the GRB020405 afterglow 
    Masetti, N,. ...et al. (including Pandey, S. B. & Sagar, R.) (2003)
    We report on photometric, spectroscopic and polarimetric monitoring of the optical and near-infrared (NIR) afterglow of GRB020405. Ground-based optical observations, performed with 8 different telescopes, started about 1 ...
  • UBVRI CCD photometry of the OB associations Bochum 1 and Bochum 6 
    Yadav, R. K. S.; Sagar, R. (2003)
    We report the first deep UBVRI CCD photometry of 2460 stars in the field of two poorly studied OB associations Bochum 1 and Bochum 6. We selected 15 and 14 probable members in Bochum 1 and Bochum 6 respectively using ...
  • Rapid optical variability in radio-quiet QSOs 
    Gopal-Krishna; Gupta, A. C.; Sagar, R.; Wiita, P. J.; Chaubey, U. S.; Stalin, C. S. (2000)
    We report results of the observations at the Vainu Bappu Observatory and the Uttar Pradesh State Observatory of eight radio-quiet quasi-stellar objects (RQQSOs) during 1996-99. This is a part of our ongoing programme to ...
  • A comparative study of intra-night optical micro-variability of high luminosity AGN classes 
    Stalin, C. S. (2003)
    This thesis explores mainly the problem of the radio loudness dichotomy in quasars. This is addressed by carrying out an extensive search for intra-night optical variability (INOV) in seven sets of optically luminous ...
  • Spectrophotometric observations of comet Hale Bopp (C/1995 O1) 
    Rautela, B. S.; Joshi, G. C.; Srivastava, J. B. (2000)
    Haser Model production rates of CN and C₂ in the coma of the comet Hale-Bopp (C/1995 O1) have been obtained. Molecular production rate, size of the nucleus and continuum flux at 484.0 nm have further been analyzed to get ...
  • Dynamics of limb flar and associated primary and secondary post flare loops 
    Uddin, W.; Joshi, B.; Chandra, R.; Joshi, A. (2003)
    In this paper we present the analysis of M 1.8 class (GOES SXR) limb flare and associated post flare loops of 2 May, 2001 which erupted on the west limb in NOAA 9433 (N15, W88). The flare started at around 00:32 UT from a ...
  • Studies of young stellar objects 
    Yadav, R. K. S. (2003)
    We present a detailed study of four young open star clusters and two OB associations using deep CCD UBVRI and 2MASS JHK measurements. Physical parameters of the clusters have been estimated using optical as well as near ...
  • FR Cnc - A young spotted star 
    Pandey, J. C. (2003)
    Optical photometric and spectroscopic studies of the star FR Cnc = BD + 16 1753 have been carried out during the years 2001-2002. The rapid changes in the shape of light curve can be attributed to the formation and ...
  • Open star clusters: Star formation and structure 
    Pandey, A. K. (2003)
    Observational evidences indicate that the formation of open star clusters has been efficient throughout the life of our Galaxy. As a consequence, we find open clusters with ages ranging from a few Myr to few Gyr. This makes ...
  • SN 2002ap, the Hypernova of Class Ic 
    Pandey, S. B.; Sahu, D. K.; Anupama, G. C.; Bhattacharya, D.; Sagar, R. (2003)
    The supernova SN2002ap was discovered in the outer regions of the nearby spiral M74 on January 29.4 UT. Early photometric and spectroscopic observations indicate the supernova belongs to the class of Ic hypernovae SN 1997ef ...
  • A ∼4.6 h quasi-periodic oscillation in the BL Lacertae PKS 2155-304? 
    Lachowicz, P.; Gupta, A. C.; Gaur, H.; Wiita, P. J. (2009)
    We report a possible detection of an ̴4.6-h quasi-periodic oscillation (QPO) in the 0.3–10 keV emission of the high-energy peaked blazar PKS 2155−304 from a 64 ks observation by the XMM-Newton EPIC/pn detector. We identify ...
  • Study of three homologous solar flares observed from active region NOAA 9033 on 12th June 2000 
    Verma, V. K.; Vats, H. O. (2003)
    In the paper, we present a study of three homologous Hα flares observed on 12th June 2000 in active region (AR) NOAA 9033. During the observation of AR NOAA 9033 on 12th June 2000, we observed 1st solar flare between ...
  • Wide field CCD photometry of the young open cluster NGC 663 
    Pandey, A. K.; Upadhyay, K.; Ogura, K.; Sagar, R. (2003)
    A deep and wide field CCD photometry of the young open cluster NGC 663 has been carried out. We report preliminary results of our investigations, specifically the determination of the cluster mass function which is found ...
  • Possible microlensing event in the direction of M31 
    Joshi, Y. C.; Pandey, A. K.; Narasimha, D.; Sagar, R. (2003)
    M 31 has been a promising target to search for microlensing events. Consequently a number of groups have started observations towards this galaxy, however, analyzing the observations in the large background of unresolved ...
  • CCD photometry of the unstudied galactic star clusters Be 10, Be 67 and To 5 
    Lata, S.; Mohan, V.; Pandey, A. K.; Sagar, R. (2004-07)
    We present the broad band Johnson UBV and Cousins RI CCD photometric observations for open clusters Be 10, Be 67 and To 5. So far no photometric study of these clusters in published. The colour-magnitude diagrams indicate ...
  • Spectrophotometry of the comet C/2002 V1 (NEAT) 
    Sanwal, B. B.; Kumar, B.; Singh, M. (2004-03)
    The 1.2-m Schmidt telescope at IIalcakala found a comet on November 6, 2002 during the Near Earth Asteroid Tracking (NEAT)and it was reported by S.II.Pravdo. At the time of discovery its magnitude was around 17.3. Several ...
  • ARIES imaging polarimeter 
    Rautela, B. S.; Joshi, G. C.; Pandey, J. C. (2004-09)
    An Imaging Polarimeter has been fabricated for use with liquid- N2 cooled CCD camera and is designed to suit 104-cm Sampurnanand telescope with an f/13 focus at Aryabhatta Research Institute of Observational ...
  • Mass function study of six open clusters Be 10, Be 67, to 5, Be 15, Be 71 and King 1 
    Lata, S. (2005-06)
    In the Present study, we have used the CCD data to determine the luminosity and mass function of six open clusters. Members of clusters are identified using photometric and statistical criteria. From these members, er have ...

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