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  • Simultaneous imaging in optical and near-IR bands 
    Vadher, N. M; Shah, A. B; Shroff, A. J; Joshi, U. C (Astronomical Society of India, 2000)
    It is very important to have simultaneous observations in optical and near IR bands to understand several astrophysical phenomena. One problem is to know the nature of the central engine in blazars, which are in general ...
  • Simultaneous infrared and H-alpha measurements of Be stars 
    Apparao, K. M. V; Tarafdar, S. P; Verma, R. P; Iyengar, K. V. K; Ghosh, K. K (Indian Academy of Sciences, 1993)
    The observed infrared excess in Be stars is usually interpreted as free-free and free-bound emission from a hot gas envelope around the Be star. This hot gas should also emit H-alpha line radiation. Earlier observations ...
  • Simultaneous longitudinal and transverse oscillations in an active-region filament 
    Pant, V; Mazumder, R; Yuan, Ding; Banerjee, D; Srivastava, A. K; Shen, Yuandeng (Springer, 2016-11)
    We report on the co-existence of longitudinal and transverse oscillations in an active-region filament. On March 15, 2013, an M1.1 class flare was observed in Active Region AR 11692. A coronal mass ejection (CME) was found ...
  • Simultaneous longitudinal and transverse oscillations in filament threads after a failed eruption 
    Mazumder, R; Pant, V; Manuel Luna; Banerjee, D (EDP Sciences, 2020-01)
    Context. Longitudinal and transverse oscillations are frequently observed in the solar prominences and/or filaments. These oscillations are excited by a large-scale shock wave, impulsive flares at one leg of the filament ...
  • Simultaneous longitudinal and transverse oscillations in filament threads after a failed eruption 
    Rakesh Mazumder; Vaibhav Pant; Manuel Luna; Dipankar Banerjee (EDP Sciences, 2019-11)
    Longitudinal and transverse oscillations are frequently observed in the solar prominences and / or filaments. These oscilla- tions are excited by a large-scale shock wave, impulsive flares at one leg of the filament ...
  • Simultaneous microwave observations of solar flares at 6 and 20 CM wavelengths using the VLA 
    Melozzi, M; Kundu, M. R; Shevgaonkar, R. K (Kluwer Academic Publishers, 1985-06)
    Using the Very Large Array, solar burst observations have been carried out simultaneously at 6 and 20 cm. Structural changes and preheating have been observed in the flaring regions on time scales of minutes to tens of ...
  • Simultaneous MITSuME g'RCIC monitoring of S5 0716+714 
    Stalin, C. S; Kawabata, K. S; Uemura, M; Yoshida, M; Kawai, N; Yanagisawa, K; Shimizu, Y; Kuroda, D; Nagayama, S; Toda, H (Blackwell Publishing, 2009-11)
    We present the results of our intra-night optical flux monitoring observations of S5 0716+714 done simultaneously in g',RC and IC filters. The observations were done using the Multicolor Imaging Telescopes for Survey and ...
  • Simultaneous near-sun observations of a moving type IV radio burst and the associated white-light coronal mass ejection 
    Hariharan, K; Ramesh, R; Kathiravan, C; Wang, T. J (Springer, 2016-05)
    We present rare contemporaneous low-frequency (< 100 MHz) imaging, spectral, and polarimetric observations of a moving type IV radio burst that had close spatio-temporal association with a white-light coronal mass ejection ...
  • Simultaneous Organisation of v, B - the Spicules 
    Krishan, V (International Astronomical Union, 1990)
  • Simultaneous Radio and Hα Observations of Be-Stars 
    Rengarajan, T. N; Tarafdar, S. P; Ghosh, K. K (European Southern Observatory, 1990-03)
    We have observed 18 Be stars in the radio continuum at 2cm wavelength with the VLA on 7th February 1987. We observed 12 of the stars the same night in the optical using an H alpha filter and the rest subsequently. No radio ...
  • Simultaneous solution of Kompaneets equation and radiative transfer equation in the photon energy range 1–125 keV 
    Peraiah, A; Srinivasa Rao, M; Varghese, B. A (Elsevier, 2011-03)
    Radiative transfer equation in plane parallel geometry and Kompaneets equation is solved simultaneously to obtain theoretical spectrum of 1–125 keV photon energy range. Diffuse radiation field are calculated using ...
  • Simultaneous Solution of Radiative Transfer Equation in the Comoving Frame and the Statistical Equilibrium Equation with Complete Redisribution 
    Peraiah, A (Indian Institute of Astrophysics, Bangalore, 1980)
    Complete redistribution with Voigt profile function has been employed in obtaining the simultaneous solution of line transfer and the statistical equilibrium equation for a non-LTE two level atom in an extended stellar ...
  • Simultaneous X-ray and Optical Observations of the T Tauri star TW Hya 
    Mallik, S. G. V; Brickhouse, N. S; Dupree, A. K (Springer, 2010)
    We report preliminary results obtained from a spectroscopy and photometry campaign of the T Tauri star TW Hya in February- March, 2007. A long HETG observation with CHANDRA and simultaneous optical observations around the ...
  • Simultaneous X-ray/UV Observations of Ultraluminous X-ray Source Holmberg II X-1 with Indian Space Mission Astrosat 
    Vinokurov, A; Atapin, K; Bordoloi, O. P; Sarkisyan, A; Kashyap, U; Chakraborty, M; Rahna, P. T; Kostenkov, A; Solovyeva, Y; Fabrika, S; Safonova, M; Gogoi, R; Sutaria, F. K; Murthy, J (Springer, 2022-09)
    We present the results of eight epochs of simultaneous UV and X-ray observations of the highly variable ultraluminous X-ray source (ULX) Holmberg II X-1 with AstroSat—Indian multiwavelength space satellite. During the ...
  • Singature of Dirac vs majorana of neutrinos from HECR 
    Balaji, K. R. S; Bhattacharjee, P; Mohanty, S; Nayak, S. N (Indian Academy of Sciences, 2000-08)
  • Single shot solar spectroscopic design aspects 
    Mathur, Harsh (Indian Institute of Astrophysics, 2019-06)
    High time-cadence Spectro-Polarimetry allows the feasibility of studying magnetic field evolution coupled with the plasma flows. Such a high cadence solar spectro-polarimetry if developed will allow one to study magnetic ...
  • A Single-Cell Photopolarimeter 
    Jain, S. K; Bhattacharyya, J. C (Indian Institute of Astrophysics, Bangalore, 1987-02)
    A simple, single-cell photopolarimeter has been developed for use at the cassegrain focus of the 102 cm Ritchey-Chretien reflector at Kavalur. The design and performance of the instrument are discussed
  • A Single-Channel Polarimeter 
    Jain, S. K; Bhattacharyya, J. C (International Astronomical Union, 1986)
    The authors have developed a single-channel photopolarimeter to measure polarization to ≡1%, with an accuracy of 0.1%. Laboratory tests show that the performance of the instrument matches the requirements.
  • Singlet and triplet differential cross sections for pp-->ppπ0 
    Deepak, P. N; Ramachandran, G (The American Physical Society, 2002-02)
    The singlet and triplet differential cross sections for pp-->ppπ0 have been estimated for the first time at 325, 350, 375, and 400 MeV using the results of the recent experimental measurements [Phys. Rev. C 63, 064002 ...
  • SiO maser survey of AGB stars in the North Galactic Cap 
    Ita, Y; Deguchi, S; Fujii, T; Kameya, O; Miyoshi, M; Nakada, Y; Nakashima, J; Parthasarathy, M (EDP Sciences, 2001-09)
    A SiO maser survey in the J=1-0, v=1 and 2 transitions has been made for IRAS sources in the North Galactic Cap b > 30o) with the Nobeyama 45 m radio telescope. The sources were selected on the basis of their IRAS 12/25-μm ...

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