IIA Institutional Repository

Browsing by Author "Verma, V. K"

Browsing by Author "Verma, V. K"

Sort by: Order: Results:

  • CCD Observations of the Total Solar Eclipse of October 24, 1995 
    Verma, V. K; Wahab Uddin; Gaur, V. P; Joshi, G. C; Bondal, K. R (Indian Institute of Astrophysics, Bangalore, 1997)
    The observations of the solar corona during the Total Solar Eclipse of October 24, 1995 were attempted in white light and in narrow band filters with peak wavelenghts centered at 5303 Armstrong (FeXIV) and at 6474 Armstrong ...
  • Double ribbon flare of 1981 October 19 
    Verma, V. K; Pande, M. C (Astronomical Society of India, 1983-03)
    Photographic observations with a 0.7 A passband H-alpha Halle filter and morphological description of the double ribbon flare which occured near Halle plage region 17926 on 1981 October 19 are described. Initially the flare ...
  • Eruption of twisted filament, associated flare and transient phenomena 
    Uddin, W; Verma, V. K (Astronomical Society of India, 1998)
    In this paper we present CCD observations between 14th to 20th Feb. 1994 and analysis of the giant twisted filament evolved in the active region NOAA 7671. The dynamic eruption of the filament accompanied by major flare ...
  • Estimation of Fried's Parameter From Specklegrams of Solar Features 
    Sridharan, R; Venkatakrishnan, P; Verma, V. K (Springer, 2002-12)
    A few methods of estimating Fried's parameter (r 0) from specklegrams of solar features are described. Some of these methods were used to estimate r 0 for the speckle data obtained from Kodaikanal Observatory (KO), Uttar ...
  • On the Activation of a Quiescent Prominence 
    Verma, V. K (Astronomical Society of India, 1983-06)
    During the observations of a quiescent prominence of 1981 November 27, the prominence got activated and mass transfer to another active centre took place with an average velocity of 32 km s/sup-1/ along a looped path. The ...
  • On the dependence of solar flare occurrence on sunspot polarity 
    Verma, V. K; Shelke, R. N (Astronomical Society of India, 1985-09)
    The possibility of predicting flare occurrence on the sun has been examined. It is noticed that the p-polarity dominant spot groups are more productive of flares than the f-polarity dominant spot groups. This high productivity ...
  • On the location of Solar Active Longitudes 
    Shelke, R. N; Verma, V. K (Astronomical Society of India, 1985-03)
    The longitudinal distributions of sudden ionospheric disturbances producing active regions with high flare activity and/or with at least one high energy flare particle event (PCA or GLE) have been examined. These active ...
  • On the periodicity of solar great hard X-ray bursts, energic solar radio bursts and sunspot data 
    Verma, V. K; Joshi, G. C (Indian Institute of Astrophysics, Bangalore, 1988)
    In the last solar maximum period (cycle 21) the 152-158 day periodicity was found in the occurrence rate of solar flares through solar gamma ray, microwave, soft X-ray, hard X-ray and H-alpha flares. In the present, brief ...
  • Possibility of occurrence of solar proton flares in relation to other phenomena 
    Uddin, W; Pande, M. C; Verma, V. K (Indian Institute of Astrophysics, Bangalore, 1988)
    In the present investigation we have studied the relation between solar proton flares and associated optical, radio and x-ray events. It is found that optical flares are usually associated with large optical flares in ...
  • Proposed 60-cm multichannel Solar Vacuum Telescope of UPSO, Naini Tal 
    Verma, V. K; Uddin, W; Gaur, V. P (Astronomical Society of India, 1998)
  • Solar observational programs and facilities at UPSO, Naini Tal 
    Gaur, V. P; Verma, V. K; Uddin, W (Astronomical Socity of India, 1998)
    We present here the overview of the solar facilities at the U.P. State Observatory, Naini Tal, which have been developed over years for the observations of solar activity phenomena. The various backend instruments and the ...
  • Study of Three Homologous Solar Flares Observed from Active Region NOAA 9033 on 12th June 2000 
    Verma, V. K; Vats, H. O (Astronomical Society of India, 2003)
    In the paper, we present a study of three homologous H 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 0135-0155 ...
  • Surge activities on November 26-28, 1990 
    Uddin, W; Verma, V. K (Astronomical Society of India, 2000)
    We report here a study of 8 solar surges observed in H? emission on the west solar limb (active region NOAA 6368) on 26, 27 and 28 November 1990. Three surges were observed on 26 November of durations 35, 86 and 40 min at ...
  • Surge prominence of 1981 November 19 
    Verma, V. K; Pande, M. C (Astronomical Society of India, 1982-09)
    Time-lapse photographic observations with 0.7 Armstrong passband H-alpha filter and the morphological behaviour of the surge prominence recorded on 1981 Novermber 19 have been described. The surge was recorded both in the ...
  • Time delay between H-alpha and soft x-ray emissions during solar flares 
    Verma, V. K; Pande, M. C (Astronomical Society of India, 1985-06)
    A statistical analysis of time delays between H-alpha and soft x-ray (SXR) emissions at onset and peak respectively during solar flares is presented. We find that at the onset of flares SXR emission starts simultaneously ...
  • Total solar eclipse observations of 24 October 1995 from Meja Khas, Allahabad 
    Verma, V. K; Uddin, W; Gaur, V. P; Joshi, G. C; Bondal, K. R; Pant, P (Astronomical Society of India, 1996)
    Monochromatic coronal images during the total solar eclipse of 24 October 1995 were successfully obtained in 6374 Amstrong [Fe X]line. The experiment carried out a Meja Khas, Allahabad during the eclipse and the preliminary ...
  • Twisted surge of 1981 December 25 
    Verma, V. K (Astronomical Society of India, 1983-03)
    Photographic observations and the morphological behaviour of the surge prominence of importance class 1 recorded with the 0.7 A passband H-alpha filter on 1981 December 25 have been described. The surge was recorded both ...

Search DSpace

Browse

My Account