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  • Evershed, John (Royal Astronomical Society, 1929-01)
  • Jain, K; Tripathy, S. C; Bhatnagar, A; Kumar, B (Astronomical Society of India, 2001)
    Using helioseismic data from SOI/MDI and GONG for the current solar cycle 23, from solar minimum to near maximum phase, we report here on the temporal variation of the rotation rate.
  • Kirov, B; Georgieva, K; Javaraiah, J (European Space Agency, 2003-09)
    It is generally accepted that the annual variation in the Earth's rotation rate is fully determined by large-scale seasonal changes in atmospheric circulation. We demonstrate that the oscillations of both the Earth's ...
  • Adithya, H. N; Kariyappa, R; Shinsuke, Imada; Kanya, Kusano; Zender, Joe; Dame, Luc; Gabriel, Giono; DeLuca, Edward; Weber, Mark (Springer, 2021-04)
    It is of great interest and importance to study the variabilities of solar EUV, UV and X-ray irradiance in heliophysics, in Earth’s climate, and space weather applications. A careful study is required to identify, track, ...
  • Cecatto, J. R; Subramanian, K. R; Sawant, H. S (Brazilian Physical Society, 1999-09)
    On 30th June 1989 high sensitivity-spectral resolution observations of solar radio bursts were carried out in the frequency range of 18 - 23 GHz. The burst observed at 17:46 UT was different from the 60 bursts observed so ...
  • Hemanth, P; Nagaraju, K; Ravindra, B; Ramesh, K. B (SPIE-The International Society for Optical Engineering, 2018-11)
    Chromospheric magnetic fields are of paramount importance in understanding the dynamics of energetic events in the solar atmosphere. At the Kodaikanal Solar Observatory, several polarimeters were developed in the past to ...
  • Basu, S; Christensen-Dalsgaard, J; Schou, J; Thompson, M. J; Tomczyk, S (Astronomical Society of India, 1996)
    We have used solar frequencies obtained form 1 year of observations with LOWL instrument to investigate the radial stratification of the Sun. Models which include the diffusion of helium and heavy elements below the solar ...
  • Krishan, V (Indian Institute of Astrophysics, Bangalore, 1988)
    In a two-dimensional incompressible fluid, the total energy as well as the total squared vorticity called enstrophy is conserved. It is found that the energy spectrum in two-dimensional hydrodynamic turbulence cascades to ...
  • Thiruvengadathan, A (Manager of Publications Civil Lines Delhi, 1955-08)
  • Mugundhan, V; Hariharan, K; Ramesh, R (Springer, 2017-11)
    We present an estimation of the electron density modulation index ( δN Nee ) for the first time using solar type IIIb radio burst observations. The mean value of δN Nee is calculated to be ≈ 0.006 ± 0.002 over the ...
  • Varma, Manoj; Padinhatteri, Sreejith; Sinha, Sakya; Tyagi, Anurag; Burse, Mahesh; Yadav, Reena; Kumar, Ghanshyam; Ramaprakash, Anamparambu; Tripathi, Durgesh; Sankarasubramanian, K; Nagaraju, K; Vadodariya, Koushal; Tadepalli, Srikar; Deogaonkar, Rushikesh; Olekar, Manjunath; Azaruddin, Mohamed; Unnikrishnan, Amrita (Springer, 2023-02)
    Aditya-L1 is India’s first observatory-class solar space mission to study the Sun from the Lagrange L1 point. The Solar Ultra-Violet Imaging Telescope (SUIT) is one of the payloads onboard Aditya-L1. SUIT is an off-axis ...
  • Niranjan, K; Thulasiraman, S; Reddy, Y. S (Indian Institute of Astrophysics, Bangalore, 1997)
    Solar UV B Flux measurements have been made at four discrete wavelengths of 290, 300, 310 and 320 nm during and around the solar eclipse day of 24th October 1995. The Diurnal variation of the UV flux has shown the recovery ...
  • Murthy, J; Rahna, P. T; Sutaria, F. K; Safonova, M; Gudennavar, S. B; Bubbly, S. G (Current Science Association, 2017-08)
    The Solar Ultraviolet Imaging Telescope (SUIT) is an instrument onboard the Aditya-L1 spacecraft, the first dedicated solar mission of the Indian Space Research Organization (ISRO), which will be put in a halo orbit at the ...
  • Ghosh, Avyarthana; Chatterjee, Subhamoy; Khan, Aafaque R; Tripathi, Durgesh; Ramaprakash, A. N; Banerjee, D; Chordia, P; Gandorfer, Achim; Krivova, N.A; Nandy, D; Rajarshi, Chaitanya; Solanki, S. K; Sriram, S (SPIE-The International Society for Optical Engineering, 2016-07)
    The Solar Ultraviolet Imaging Telescope (SUIT) is an instrument onboard the Aditya-L1 spacecraft, the first dedicated solar mission of the Indian Space Research Organization (ISRO), which will be put in a halo orbit at the ...
  • Varma, Manoj; Tyagi, Anurag; Joshi, Bhushan; Yadav, Reena; Chordia, Pravin; Kumar, Ghanshyam; Sinha, Sakya; Burse, Mahesh; Padinhatteri, Sreejith; Deogaonkar, Rushikesh; Ramaprakash, A. N; Ghosh, Avyarthana; Tripathi, Durgesh; Sarkar, Janmejoy; Sankarasubramanian, K; Nagaraju, K; Vadodariya, Koushal; Kesharwani, Ravi; Khan, Aafaque; Olekar, Manjunath; Azaruddin, Mohamed (Oxford University Press on behalf of the Royal Astronomical Society, 2023-01)
    The Solar Ultraviolet Imaging Telescope (SUIT) is one of the payloads onboard the Aditya-L1 mission. It will perform full disc imaging of the Sun in the near-ultraviolet (UV) wavelength range of 200–400 nm. This provides ...
  • Subbaraya, B. H (Astronomical Society of India, 1998)
    The ultraviolet part of the solar spectrum is unique. Sandwiched between the relatively stable visible radiation and the highly variable energetic radiation short of 1000Ǻ, the EUV and the X-rays, it exhibits a small but ...
  • Sivaraman, K. R; Gupta, S. S; Kariyappa, R; Aleem, P. S. M; Sundararaman, K (Astronomical Society of India, 1993)
    We have monitored the sun in the light of the CaII K line and obtained the disc integrated profiles for the years 1974-91. From these profiles we have estimated the variability of the sun as a star as seen in the various ...
  • Royds, T (Royal Astronomical Society, 1936-06-19)
  • Vats, H. O; Iyer, K. N; Oza, R. M; Mehta, M; Deshpande, M. R; Kojima, M (Astronomical Society of India, 1998)
    The interplanetary scintillation (IPS) observations can be used for the determination of structure and dynamics of the solar wind. The parameters of the plasma irregularities of the solar wind are usually derived by ...

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