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Browsing by Author "Deshpande, M. R"

Browsing by Author "Deshpande, M. R"

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  • An Astronomical Polarimeter 
    Deshpande, M. R; Joshi, U. C; Kulshrestha, A. K; Banshidar; Vadher, N. M; Mazumdar, H. S; Pradhan, S. N; Shah, C. R (Astronomical Society of India, 1985-06)
    A polarimeter for the study of astronomical objects has been developed and calibrated. Observations of several objects have been made. The polarimeter covers the spectral range from 3150 A to 8500 A in standard N, U, B, ...
  • A brief report on the Infrared Telescope at Gurushikhar, MT Abu 
    Deshpande, M. R (Astronomical Society of India, 1995)
  • Coordinated TeV gamma-ray and optical polarization study of BL Lac object Mkn 501 
    Joshi, U. C; Baliyan, K. S; Ganesh, S; Deshpande, M. R; Bhattacharyya, S; Kaul, R. K; Kaul, C. L; Bhat, C. L (Astronomical Society of India, 2000)
    Coordinated TeV gamma-ray and optical polarization observations of the BL Lac object Mkn 501, carried out during 1997 with the TACTIC imaging Cerenkov telescope of the BARC and the 1.2 m Gurushikhar optical/IR telescope ...
  • Daytime ionosphere scintillation associated with geomagnetic storms 
    Deshpande, M. R; Vats, H. O; Sethia, G; Murthy, B. S (Nature Publishing Group, 1977-08)
  • Daytime satellite radio scintillation and sporadic E near the magnetic equator 
    Rastogi, R. G; Deshpande, M. R; Murthy, B. S; Davies, K (American Geophysical Union, 1977-03)
    An investigation is conducted concerning the association between the daytime scintillations of ATS-6 signals received at Ootacamund and the ionograms at the nearby station Kodaikanal, India. The investigation shows that ...
  • Dramatic Changes in the Polarization of AR Pup 
    Raveendran, A. V; Deshpande, M. R; Kameswara Rao, N; Joshi, U. C; Kuleshrestha, A. K (Konkoly Observatory, 1985-04-25)
  • Effect of electrojet on the total electron content of the ionosphere over the Indian subcontinent 
    Deshpande, M. R; Rastogi, R. G; Vats, H. O; Sethia, G; Klobuchar, J. A; Jain, A. R; Subbarao, B. S; Patwari, V. M; Janve, A. V; Rai, R. K; Singh, M; Gurm, H. S; Murthy, B. S (Nature Publishing Group, 1977-06)
    The radio beacon method of measuring TEC along a chain of optimally spaced stations near the equatorial anomaly has been used to monitor continuously the latitudinal extent of the anomaly. Comparisons with the magnitude ...
  • The equatorial anomaly in ionospheric total electron content and the equatorial electrojet 
    Iyer, K. N; Deshpande, M. R; Rastogi, R. G (Indian Academy Science, 1976)
  • Equatorial irregularity belt and its movement during a magnetic storm 
    Vats, H. O; Chandra, H; Deshpande, M. R; Rastogi, R. G; Murthy, B. S; Janve, A. V; Rai, R. K; Singh, M; Gurm, H. S; Jain, A. R (Nature Publishing Group, 1978-03)
    GEOSTATIONARY satellites are able to monitor amplitude, phase, plane of polarisation (Faraday rotation) and group retardation of radio waves passing through the ionosphere with improved temporal resolution, although some ...
  • Evidence for nonthermal radiation from the nuclei of Seyfert galaxies 
    Deshpande, M. R; Joshi, U. C (Astronomical Society of India, 1993)
    We report the detection of nonthermal radiation from the nuclei of four Seyfert galaxies through polarization studies. Our investigations on four galaxies (NGC 3081, NGC 4388, NGC 3227 and NGC 2992) show evidence of ...
  • Imaging polarimetry of comet Austin 
    Joshi, U. C; Chauhan, J. S; Deshpande, M. R; Sen, A. K; Bhatnagar, A. K (Astronomical Society of India, 1993)
    Comet Austin (1989c) was observed during April and May 1990 when its phase was between 106 deg and 110 deg. No unusual activity in the form of jet is seen in the polarization map. Polarization is low near the nucleus and ...
  • Instrumentation of "Solar X-Ray Spectrometer" Low Energy Detector (SLD) - Proposed payload onboard Indian satellite 
    Vadher, N. M; Shah, A. B; Rajmal, J; Vats, H. O; Deshpande, M. R; Seetha, S; Murthy; Sharma, R. K; Umapathy (Astronomical Society of India, 2000)
    It is proposed to fly a high spectral and temporal resolution - "Solar X-Ray Spectrometer (SOXS)" onboard Indian satellite. The SOXS will provide the disk integrated flux in the energy range 2 keV-10 MeV. It is composed ...
  • Ionosphere scintillations associated with features of equatorial ionosphere 
    Chandra, H; Vats, H. O; Sethia, G; Deshpande, M. R; Rastogi, R. G; Sastri, J. H; Murthy, B. S (European Geophysical Society, 1979-09)
    Amplitude scintillations of radio beacons aboard the ATS-6 satellite on 40 MHz, 140 MHz and 360 MHz recorded during the ATS-6 phase II at an equatorial station Ootacamund (dip 4 deg N) and the ionograms at a nearby station ...
  • Ionospheric Effects During February 1980 Solar Eclipse 
    Chandra, H; Deshpande, M. R; Vyas, G. D; Sethia, G; Vats, H. O; Iyer, K. N (Astronomical Society of India, 1980-12)
    Highlights of the ionospheric effects of the total solar eclipse of February 16, 1980 detected by ground-based experiments in India are summarised. Decrease in electron density at various height in ionosphere upto the F2 ...
  • A near infrared polarimeter for astrophysical studies 
    Joshi, U. C; Manian, K. S. B; Chauhan, J. S; Shah, V; Chitre, A; Ganesh, S; Deshpande, M. R (Astronomical Society of India, 1997)
    A state-of the-art near infrared photo polarimeter was designed and developed at Physical Research Laboratory, Ahmedabad, India to undertake the study of star forming regions, symbiotic stars and AGB stars etc. The instrument ...
  • Observations of PSR 0950 + 08 at 103 MHz 
    Deshpande, M. R; Vats, Hari Om; Janardhan, P; Bobra, A. D (Astronomical Society of India, 1993)
    n this article we report the possible cause of an enormously large enhancement (burst) in the ratio flux of PSR 0950 + 08. The burst was observed by two radio telescopes at Rajkot and Thaltej separated by 20 km. Simple ...
  • On the nature of radiation from the nucleus of a CD galaxy A0779 
    Deshpande, M. R; Joshi, U. C (Astronomical Society of India, 1993)
    An attempt is made to detect synchrotron radiation from the nucleus of a CD galaxy A-0779 through polarization studies. We have detected a high degree of polarization (up to 9 percent in ultraviolet) with a bimodal ...
  • On the power and frequency of p-modes in sunspots 
    Kumar, B; Tripathy, S. C; Jain, R; Deshpande, M. R (Astronomical Society of India, 2000)
    A time series of GONG Dopplergrams has been used to measure the velocity fluctuations in the sunspot and quiet photosphere simultaneously. The power spectrum analysis shows that the power of the predominant p-mode is reduced ...
  • Parameters of interplanetary medium 
    Oza, R. M; Vats, H. O; Iyer, K. N; Deshpande, M. R (Astronomical Society of India, 1998)
  • Phase and field Measurements at VLF, LF and HF During the Solar Eclipse of February 16, 1980 -- Preliminary Results 
    Dixit, P. S; Rao, P. K; Bhonsle, R. V; Sethia, G; Deshpande, M. R; Chandra, H (Astronomical Society of India, 1980-12)
    Phase and field measurements at 16kHz (VLF) by monitoring GBR (Rugby, England) and at 10 MHz (HF) ATA (New Delhi) were carried out from Satellite Tracking and Ranging Station (Kavalur) during the solar eclipse of February ...

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