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  • Ionospheric Currents Associated with Solar Flares: A Short Review 
    Roy, M (Astronomical Society of India, 1980-03)
    The enhanced radiation of the X-rays and the ultra-violets during a chromospheric flare can induce a qualitative change in the ionospheric current system. The observational results of this effect, popularly known as ...
  • Ionospheric disturbances associated with magnetic storms at Kodaikanal 
    Bhargava, B. N; Gopala Rao, U. V (Manager of Publications Civil Lines Delhi, 1959-04)
    F2 layer disturbance at Kodaikanal have been analysed for a study of the behaviour of the, critical frequency and the virtual height during geomagnetic storms. The disturbances have been classified for this purpose into ...
  • 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 ...
  • Ionospheric effects of the total solar eclipse of 24 October, 1995 over Ahmedabad 
    Chandra, H; Vyas, G. D; Sharma, S (Astronomical Society of India, 1998)
  • Ionospheric electron content and equivalent slab thickness in the equatorial region 
    Das Gupta, A; Basu, S; Bhar, J. N; Bhattacharyya, J. C (American Geophysical Union, 1975-02)
    The ionospheric total electron content and equivalent slab thickness in the equatorial region around 75° E have been studied. It is found that the slab thickness exhibits a strong latitudinal dependence with a maximum at ...
  • Ionospheric Indication of Short-time Solar Activity Variations 
    Bhattacharyya, J. C; Sunder, R. S (PID [Publications and Information Directorate], 1970)
    A series of Lyot filtergrams have been photometrically analysed and the variations in the plage intensity determined on a number of days. From simultaneous ionosonde records, correlation has been sought between the electron ...
  • Ionospheric storm of 4 - 6 December 1958 in the Indian equatorial region. 
    Sastri, J. H (The Council of Scientific and Industrial Research, 1980-06)
    The characteristics of the ionospheric storm of 4-6 Dec. 1958 in the Indian sector (60-85°B) are studied using published data from ten ionospheric stations distributed from high mid latitudes to dip equator. It is shown ...
  • Ionospheric storm of early November 1993 in the Indian equatorial region 
    Sastri, J. H; Jyoti, N; Somayajulu, V. V; Chandra, H; Devasia, C. V (The American Geophysical Union., 2000-08)
    An investigation is made of the response of equatorial ionosphere in the Indian (75°E) sector to the major magnetic storm of November 3, 1993, using data from the ionosonde and magnetometer networks spanning the region ...
  • Ionospheric total electron content and slab-thickness at low latitudes in Indian zone 
    Rastogi, R. G; Iyer, K. N; Sharma, R. P (Indian Academy of Sciences, 1977-06)
    Observations of Faraday rotation of beacon signals from low orbiting satellite BE-B recorded at one station near the dip equator (Kodaikanal, dip 3·4° N) and at another station near the peak of the equatorial anomaly ...
  • IPS observations of the solar wind at 327 MHz - A comparison with ULYSSES observations 
    Janardhan, P; Balasubramanian, V; Ananthakrishnan, S; Srivatsan, R (Astronomical Society of India, 1996)
    Extensive IPS observations at 327 MHz using the Ooty Radio Telescope (ORT) are presented. The observations spanning two and a half years starting in September 1992 covered two important periods during the Ulysses south ...
  • IPS survey at 327 MHz for detection of compact radio sources 
    Balasubramanian, V; Janardhan, P; Ananthakrishnan, S; Manoharan, P. K (Astronomical Society of India, 1993)
    In early 1992 a new feed was installed along the focal line of the 530 m long and 30 m wide parabolic cylinder reflector of the Ooty Radio Telescope (ORT). The new feed consisting of 1056 GaAsFET low noise amplifiers, one ...
  • iPTF13bvn: The First Evidence of a Binary Progenitor for a Type Ib Supernova 
    Bersten, M. C; Benvenuto, O. G; Folatelli, G; Nomoto, K; Kuncarayakti, H; Srivastav, Shubham; Anupama, G. C; Quimby, R; Sahu, D. K (IOP Publishing, 2014-10)
    The recent detection in archival Hubble Space Telescope images of an object at the location of supernova (SN) iPTF13bvn may represent the first direct evidence of the progenitor of a Type Ib SN. The object's photometry was ...
  • IR observations of Am stars 
    Shylaja, B. S; Ashok, N. M (Astronomical Society of India, 2002)
    The IR observations of chemically peculiar stars are carried out and compared with the previous data in IR and far IR from IRAS. The flux redistribution appears to be a common phenomenon in all the stars of this class. The ...
  • IR Spectroscopy of Nova-like Sources 
    Banerjee, D. P. K; Ashok, N. M (Astronomical Society of India, 2003)
    Near - IR spectroscopic and photometric observations of the eruptive variables V838 Mon and V445 Puppis in the J H K bands are reported. These objects erupted in nova-like explosions but evolved into rather unique and ...
  • IR-IMAC - A developmental approach 
    Vidhya, V; Kamath, U. S; Vidhya, R (Astronomical Society of India, 2004-03)
    IR-IMAC is a multi-utility software package developed to remotely control the Near-Infrared imager installed on the 2-metre Himalayan Chandra Telescope at Mt. Saraswati, Hanle. The core idea in the development of IR-IMAC ...
  • IRAS 05436-007 
    Maheswar, G; Bhatt, H. C (International Astronomical Union, 2004)
  • IRAS 17395-0841: A New Young Low Excitation Planetary Nebula 
    Vijapurkar, J; Drilling, J. S; Parthasarathy, M (American Astronomical Society, 1997-10)
    We report here the discovery of a new young low excitation planetary nebula IRAS 17395-0841.
  • IRAS observations of R Cor Bor stars 
    Kameswara Rao, N; Nandy, K (Royal Astronomical Society, 1986-09)
    The IRAS observations of R Cr B, SU Tau and V 348 Sgr indicate the existence of a cool dust component of temperature about 30 K in R Cr B and SU Tau and less than or equal to 100 K in V 348 Sgr, in addition to the hot dust. ...
  • Irradiation effects in close binaries in an electron scattering medium 
    Varghese, B. A; Srinivasa Rao, M (Springer, 2016-03)
    In a close binary system, the effects of irradiation are studied from an extended surface of the secondary component on the atmosphere of the primary. Primary and the secondary components are assumed to have equal radii ...
  • Irradiation effects in close binary stars 
    Srinivasa Rao, M; Varghese, B. A (Anita Publications, 2004-12)
    We studied the reflection effect in 2-dimensional geometry to see how the field will change if we calculate the reflected radiation by the transfer equation in a close binary system. The reflected radiation is calculated from ...

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