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  • Evidence of asymmetry in Mira variable U Ori 
    Mondal, S (Astronomical Society of India, 2005-06)
    Near simultaneous, two high angular resolution observations by lunar occultation technique at the same wavelength (2.2mu m) but at different position angles (PA) result in two unique Uniform Disk (UD) angular diameters of ...
  • Evidence of expansion in the central region of NGC 2346 
    Banerjee, D. P. K; Anandarao, B. G; Desai, J. N; Jain, S. K; Mallik, D. C. V (International Astronomical Union, 1989)
  • Evidence of high-mass star formation through multiscale mass accretion in hub-filament-system clouds 
    Liu, Hong-Li; Tej, Anandmayee; Liu, Tie; Sanhueza, Patricio; Qin, Sheng-Li; He, Jinhua; Goldsmith, Paul F; Garay, Guido; Pan, Sirong; Morii, Kaho; Li, Shanghuo; Stutz, Amelia; Tatematsu, Ken’ichi; Xu, Feng-Wei; Bronfman, Leonardo; Saha, Anindya; Issac, Namitha; Baug, Tapas; Toth, L Viktor; Dewangan, Lokesh; Wang, Ke; Zhou, Jianwen; Lee, Chang Won; Yang, Dongting; Luo, Anxu; Shen, Xianjin; Zhang, Yong; Wu, Yue-Fang; Ren, Zhiyuan; Liu, Xun-Chuan; Archana Soam; Zhang, Siju; Luo, Qiu-Yi (Oxford University Press on behalf of Royal Astronomical Society, 2023-07)
    We present a statisticalstudy of a sample of 17 hub-filament-system (HFS) clouds of high-massstar formation using high-angular resolution (∼1–2 arcsec) ALMA 1.3 and 3 mm continuum data. The sample includes eight infrared ...
  • Evidence of Plasma Resonance Instability from Observations of Solar Decimetric Fine Structures 
    Fernandes, F. C. R; Sawant, H. S; Cecatto, J. R; Krishan, V; Karlicky, M; Rosa, R. R (Sociedade Brasileira de Física, 2003-03)
    The solar radio emissions in the decimetric frequency range (above 1000 MHz) are very rich in temporal and/or spectral fine structures. The Brazilian Solar Spectroscope (BSS) at INPE started operating in 1998. Since then, ...
  • Evidence of underdeveloped torus and broad-line region of weak emission line quasars based on their spectral energy distribution 
    Kumar, Ritish; Chand, Hum; Joshi, Ravi (Oxford University Press on behalf of Royal Astronomical Society, 2023-03)
    To unravel the dominant cause of the weak emission line in a subset of optically selected radio-quiet 'weak emission line quasars' (WLQs), we have investigated the possibility of an underdeveloped broad line region (BLR). ...
  • Evidence of V-band polarimetric separation of carbon stars at high galactic latitude 
    Goswami, A; Sreeja, S. K; Sen, A. K (IOP Publishing, 2010-10-10)
    Polarization is an important indicator of stellar evolution, especially for stars evolving from red giant stage to planetary nebulae. However, not much is known about the polarimetric properties of the carbon-enhanced ...
  • Evolution and period changes in binary stars 
    Abhyankar, K. D (Astronomical Society of India, 1981-06)
  • Evolution of a Peculiar Type Ibn Supernova SN 2019wep 
    Gangopadhyay, A; Misra, Kuntal; Hosseinzadeh, Griffin; Arcavi, Iair; Pellegrino, Craig; Wang, Xiaofeng; Andrew Howell, D; Burke, Jamison; Zhang, Jujia; Kawabata, Koji; Singh, Mridweeka; Dastidar, Raya; Hiramatsu, Daichi; McCully, Curtis; Mo, Jun; Chen, Zhihao; Xiang, Danfeng (American Astronomical Society, 2022-05-10)
    We present a high-cadence short term photometric and spectroscopic monitoring campaign of a type Ibn SN 2019wep, which is one of the rare SN Ibn after SNe 2010al and 2019uo to display signatures of flash ionization (He ii, ...
  • Evolution of an astrophysicist 
    Narlikar, J. V (Astronomical Society of India, 1997)
  • The evolution of bulges of galaxies in minor fly-by interactions 
    Kumar, A; Mousumi Das; Kataria, Sandeep Kumar (Cambridge University Press, 2019-06)
    We investigate the minor interactions of two disk galaxies with mass ratio of 10:1 in fly-by encounters that do not lead to the merging of the galaxies. In our N-body simulations, we vary only the pericenter distances to ...
  • Evolution of coronal helicity in a twisted emerging active region 
    Ravindra, B; Longcope, D. W (Springer, 2010)
    Active-region magnetic fields are believed to be generated near the shear layer of the convection zone by dynamo processes. These magnetic fields are concentrated into fluxtubes, which rise, due to buoyancy, through the ...
  • Evolution of Currents of Opposite Signs in the Flare-productive Solar Active Region NOAA 10930 
    Ravindra, B; Venkatakrishnan, P; Tiwari, S. K; Bhattacharyya, R (IOP Publishing, 2011-10-10)
    Analysis of a time series of high spatial resolution vector magnetograms of the active region NOAA 10930 available from the Solar Optical Telescope SpectroPolarimeter on board Hinode revealed that there is a mixture of ...
  • Evolution of emission line activity in intermediate mass young stars 
    Manoj, P; Bhatt, H. C; Maheswar, G; Muneer, S (American Astronomical Society, 2006-12-10)
    We present optical spectra of 45 intermediate-mass Herbig Ae/Be stars. Together with the multiepoch spectroscopic and photometric data compiled for a large sample of these stars and ages estimated for individual stars by ...
  • Evolution of Hen 3-1357, the Stingray Nebula 
    Pena, Miriam; Parthasarathy, M; Ruiz-Escobedo, Francisco (Oxford University Press on behalf of Royal Astronomical Society, 2022-09)
    The spectroscopic evolution of Hen 3-1357, the Stingray Nebula, is presented by analysing data from 1990 to 2021. High-resolution data obtained in 2021 with South African Large Telescope High Resolution Spectrograph and ...
  • Evolution of Kelvin–Helmholtz Instability in the Fan-spine Topology 
    Mishra, S. K; Singh, Balveer; Srivastava, A. K; Kayshap, Pradeep; Dwivedi, B. N (IOP Publishing, 2021-12-10)
    We use multiwavelength imaging observations from the Atmospheric Imaging Assembly (AIA) on board the Solar Dynamics Observatory to study the evolution of the Kelvin–Helmholtz (K–H) instability in a fan-spine magnetic field ...
  • Evolution of latitude zonal structure of the large-scale magnetic field in solar cycles 
    Makarov, V. I; Sivaraman, K. R (Springer, 1989-03)
    The latitude zonal component of the large-scale solar magnetic field is analyzed using H-alpha charts for the 1905-1982 period, and the poleward migration of prominences is used to calculate the time of reversal of the ...
  • Evolution of Lithium Abundance in Pop I Giants 
    Mallik, S. G. V (International Astronomical Union, 2000)
    Recent observations of cool giants have shown that there exists a large range in their lithium abundances even for apparently similar stars. In order to explore whether this large spread could be interpreted in terms of ...
  • Evolution of lithium in low-mass giants: an observational perspective 
    Bharat Kumar, Yerra; Reddy, B. E (Indian Academy of Sciences, 2020-12)
    The overabundance of lithium in low-mass red giants has been a topic of interest for over four decades. Low-mass stars are expected to destroy lithium gradually throughout their lifetimes. Against this expectation, about ...
  • Evolution of low mass stars : AGB to PN 
    Parthasarathy, M (Astronomical Society of India, 1998)
  • Evolution of low-frequency quasi-periodic oscillations in GX 339-4 during its 2021 outburst using AstroSat data 
    Mondal, Santanu; Salgundi, Anirudh; Chatterjee, Debjit; Jana, Arghajit; Chang, H. K; Naik, Sachindra (Oxford University Press on behalf of Royal Astronomical Society, 2023-12)
    The black hole X-ray binary GX 339-4 showed an X-ray outburst during 2021. The AstroSat captured this outburst when the source entered into the intermediate flux state while the count rate was declining. The source showed ...

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