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Browsing IIAP Publications by Title

Browsing IIAP Publications by Title

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  • Tracking galaxy evolution through low-frequency radio continuum observations using SKA and citizen-science research using multi-wavelength data 
    Hota, A; Konar, C; Stalin, C. S; Vaddi, Sravani; Mohanty, Pradeepta K; Dabhade, Pratik; Arun, Sai; Bhoga, Dharmik; Rajoria, Megha; Sethi, Sagar (Indian Academy of Sciences, 2016-12)
    We present a brief review of progress in the understanding of general spiral and elliptical galaxies, through merger, star formation and AGN activities. With reference to case studies performed with the GMRT, we highlight ...
  • Tracking the evolution of Lithium in giants using asteroseismology: super-Li-rich stars are almost exclusively young red-clump stars 
    Raghubar Singh; Reddy, B. E; Campbell, S. W; Bharat Kumar, Y; Vrard, Mathieu (IOP Publishing, 2021-05-20)
    We report novel observational evidence on the evolutionary status of lithium-rich giant stars by combining asteroseismic and lithium abundance data. Comparing observations and models of the asteroseismic gravity-mode period ...
  • Transient 1/f noise 
    Sinha, S (The American Physical Society, 1996-05)
    We provide examples of transient (nonasymptotic) ``1/f noise,'' occurring over reasonably long time scales, in extended nonlinear systems modeling complex spatiotemporal phenomena. These studies contribute towards establishing ...
  • Transient activity in the loop prominence system of a flare active region 
    Bagare, S. P; Nagabhushana, B. S; Aleem, P. S. M (Astronomical Society of Indian, 1989-09)
    Solar limb observations of the activity in a loop prominence system associated with an active region were obtained on February 2, 1984. The activity was observed for a total duration of over seven hours of which the maximum ...
  • Transient composite electric field disturbances near dip equator associated with auroral substorms 
    Sastri, J. H; Ramesh, K. B; Rao, H. N. R (American Geophysical Union, 1992-07)
    Ionosonde data of Kodaikanal (Geog.Long. 77° 29′E, dip 3.0°N) and Huancayo (Geog.Long. 75°18′W, dip 2.0°N) are used to show the simultaneous occurrence of a transient disturbance in F region height of composite polarity ...
  • Transient response of the solar wind to changes in flow geometry 
    Hasan, S. S; Venkatakrishnan, P (D.Reidel Publishing Co.,, 1982-10)
    An initial stationary flow in a configuration diverging as r-squared is assumed, a state corresponding to the normal solar wind solution. The effect on the flow through a tube whose area A(r, t) diverges faster than ...
  • Transient Solution of Equations of Hydrodynamics in Gas Clouds 
    Peraiah, A (Indian Institute of Astrophysics, 1981)
    We have presented numerical results of transient phenomenon in incompressible fluids. This has been obtained by solving the equations of conservation of momentum, energy and mass in X and Y geometry. We have used the explict ...
  • Transit Light Curves for Exomoons: Analytical Formalism 
    Saha, Suman; Sengupta, S (American Astronomical Society, 2022-09-01)
    The photometric transit method has been the most effective method to detect and characterize exoplanets as several ground based as well as space based survey missions have discovered thousands of exoplanets using this ...
  • Transit of Venus on 2012 June 06: stray light estimation and restoration of Ca-K images of Twin Telescope from Kodaikanal Observatory 
    Prabhu, K; Rangarajan, K. E; Ravindra, B; Sankarasubramanian, K; Selvendran, R; Kumaravel, P (Astronomical Society of India, 2013-09)
    Observations of the transit of Venus were made from the Kodaikanal Observatory on 2012 June 06 in Ca-K wavelengths. Only half of the event was visible from India. We utilized this unique opportunity to compute the contribution ...
  • The Transit Timing and Atmosphere of Hot Jupiter HAT-P-37b 
    A-thano, Napaporn; Jiang, Ing-Guey; Awiphan, Supachai; Rattanamala, Ronnakrit; Su, Li-Hsin; Hengpiya, Torik; Sariya, Devesh P.; Yeh, Li-Chin; Shlyapnikov, A. A.; Gorbachev, Mark A.; Rublevski, Alexey N.; Mannaday, Vineet Kumar; Thakur, Parijat; Sahu, D. K; Mkrtichian, David; Griv, Evgeny (American Astronomical Society, 2022-02-01)
    We perform transit timing variation (TTV) and transmission spectroscopy analyses of the planet HAT-P-37b, which is a hot Jupiter orbiting a G-type star. Nine new transit light curves are obtained and analyzed together with ...
  • Transition probabilities and dissociation energy of astrophysical molecule CoH 
    Prithivikumaran, N; Fernandez Gomez, M; Lopez Gonzalez, J. J; Bagare, S. P; Rajamanickam, N (Springer, 2002)
    The Franck-Condon (FC) factors (transition probabilities) and r-centroids have been evaluated by the reliable numerical integration procedure for the bands of the A^3 φ_4 --> X^3 φ_4 system of astrophysical molecule CoH, ...
  • Transition probability parameters for certain band systems of astrophysical molecule GeO 
    Rajamanickam, N; Shanmugavel, R; Prithivikumaran, N; Palaniselvam, T; Bagare, S. P (Elsevier Science B.V., 2003-05)
    The transition probability parameters, Franck-Condon factors and /r-centroids, have been evaluated using the most reliable numerical integration procedure for the bands of E1Σ+, F1Σ+, /GΣ, HΠ, JΣ-X1Σ+ systems of astrophysical ...
  • Transition Probability Parameters for Certain Band Systems of the Astrophysical Molecule PO 
    Balachandra Kumar, K; Raja, V; Nagarajan, K; Bagare, S. P; Rajamanickam, N (Institute of Theoretical Physics and Astronomy of Vilnius University, 2002)
    The transition probability parameters, Franck-Condon factors and r-centroids have been evaluated by a new more reliable numerical integration procedure for the bands of the PO molecule in the ultraviolet region (1800--2900 ...
  • Transition probability parameters for the band systems G, H and I-B of astrophysical molecule PO 
    Rajamanickam, N; Balachandra Kumar, K; Shanmugavel, R; Sriramachandran, P; Nagarajan, K; Bagare, S. P (Springer, 2003-06)
    The transition probability parameters, Franck - Condon factors and r-centroids, have been evaluated by the more reliable numerical integration procedure for the bands of G, H and I-B systems of astrophysical molecule PO, ...
  • Transition properties of low-lying states in atomic indium 
    Sahoo, B. K; Das, B. P (American Physical Society, 2011-07)
  • Transition region counterpart of a moving magnetic feature 
    Lin, C. -H; Banerjee, D; O'Shea, E; Doyle, J. G (EDP Sciences, 2006-12)
    this which we seek to address in this work. Aims.In this work we aim to investigate the chromospheric and transition-region dynamics associated with a moving magnetic monopole by using spectral time-series and ...
  • Transition region small-scale dynamics as seen by SUMER on SOHO 
    Teriaca, L; Banerjee, D; Falchi, A; Doyle, J. G; Madjarska, M. S (EDP Sciences, 2004-12)
    High spectral, spatial and temporal resolution UV observations of the quiet Sun transition region show a highly structured and dynamical environment where transient supersonic flows are commonly observed. Strongly non-Gaussian ...
  • Transmission of acoustic wave energy across a magnetic flux sheath 
    Venkatakrishnan, P; Gokhale, M. H (Springer, 1977-10)
    The transmission of the energy of an acoustic wave incident on a magnetic flux sheath embedded in a homogeneous nonmagnetic plasma is analyzed for the case where finite current sheets are situated between the flux sheath ...
  • Transverse motions and wave heating of the solar atmosphere 
    Krishnakumar, V; Venkatakrishnan, P (Kluwer Academic Publishers, 1999-05)
    Periodic shaking or buffeting of magnetic flux tubes could generate magnetohydrodynamic waves which propagate along the flux tubes and dissipate energy in the chromosphere and/or corona. If we make an assumption that the ...
  • Transverse oscillations in a coronal loop triggered by a jet 
    Sarkar, S; Pant, V; Srivastava, A. K; Banerjee, D (Springer, 2016-11)
    We detect and analyse transverse oscillations in a coronal loop, lying at the south–east limb of the Sun as seen from the Atmospheric Imaging Assembly (AIA) onboard the Solar Dynamics Observatory (SDO). The jet is believed ...

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