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Browsing IIAP Publications by Title

Browsing IIAP Publications by Title

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  • Preliminary results on the flux of TeV g-rays from crab system obtained with the PACT at Pachmarhi 
    Sripathi Acharya, B; Bhat, P. N; Chitnis, V. R; Majumdar, P; Rahman, M. A; Singh, B. B; Vishwanath, P. R (International Union of Pure and Applied Physics, 2003-07)
    We have observed the Crab system (Nebula and Pulsar) and the corresponding background regions during many clear nights in the years 1999-2002 ˇ using the atmospheric Cerenkov array at Pachmarhi, PACT. Preliminary results ...
  • Preparing for solar and heliospheric science with the SKAO: An Indian perspective 
    Oberoi, Divya; Bisoi, Susanta Kumar; Sasikumar Raja, K; Kansabanik, Devojyoti; Mohan, Atul; Mondal, Surajit; Sharma, Rohit (Indian Academy of Sciences, 2023-06)
    The Square Kilometre Array Observatory (SKAO) is perhaps the most ambitious radio telescope envisaged yet. It will enable unprecedented studies of the Sun, corona and heliosphere and help to answer many of the outstanding ...
  • Presence of LaO, Presence of LaO, ScO and VO molecular lines in sunspot umbral spectra 
    Sriramachandran, P; Bagare, S. P; Rajamanickam, N; Balachandra Kumar, K (Springer, 2008-11)
    High-resolution Fourier Transform Spectrometer sunspot umbral spectra of the National Solar Observatory/National Optical Astronomy Observatory at Kitt Peak were used to detect rotational lines from 19 electronic transition ...
  • Presence of red giant population in the foreground stellar substructure of the Small Magellanic Cloud 
    James, Dizna; Subramanian, S; Omkumar, Abinaya O; Mary, Adhya; Bekki, Kenji; Cioni, Maria-Rosa L; Grijs, Richard de; Youssouf, Dalal El; Kartha, Sreeja S; Niederhofer, Florian; Loon, Jacco Th. van (Oxford University Press on behalf of Royal Astronomical Society, 2021-12)
    The eastern region of the Small Magellanic Cloud (SMC) is found to have a foreground stellar substructure, which is identified as a distance bimodality (∼12 kpc apart) in the previous studies using red clump (RC) stars. ...
  • Present and Future Observing Trends in Atmospheric Magneto-seismology 
    Banerjee, D; Erdelyi, Robert; Oliver, Ramon; O'Shea, Eoghan (2007-11)
    With modern imaging and spectral instruments observing in the visible, EUV, X-ray and radio wavelengths, the detection of oscillations in the solar outer atmosphere has become a routine event. These oscillations are ...
  • Present status of the 4-m ILMT data reduction pipeline: application to space debris detection and characterization 
    Pradhan, B; Delchambre, L; Akhunov, T; Hickson, P; Bartczak, P; Kumar, B; Surdej, J (Societe Royale des Sciences de Liege, 2018-04)
    The 4-m International Liquid Mirror Telescope (ILMT) located at the ARIES Observatory (Devasthal, India) has been designed to scan at a latitude of +29◦ 22’ 26” a band of sky having a width of about half a degree in the ...
  • Present status of the theory of atomic electric dipole moments 
    Das, B. P (World Scientific, 1995)
    A general introduction to the theory of atomic electric dipole moments is followed by a brief review of the present status of the relativistic many-body calculations. The implications for particle physics of the combined ...
  • Present trends in stellar interferometry 
    Saha, S. K (2009)
    Long baseline interferometry in optical/IR band offer the possibilities for direct measurement of all the basic physical parameters for a large number of stars. Soon after the success of obtaining interferometric fringes ...
  • Preserving our scientific heritage 
    Birdie, C; Vagiswari, A; Indira Chowdhury (Current Science Association, 2008-05-10)
  • Pressure in the reversing layer 
    Evershed, John (Indian Institute of Astrophysics, Bangalore, 1909-08-24)
  • Pressure induced incommensurate to commensurate transition in K3Cu8S6 
    Raghu, M; Subramanyam, S. V; Chatterjee, S (Springer, 1989-03)
    To study the effect of hydrostatic pressure on the incommensurate lattice modulation at 153 K in K3Cu8S6, electrical resistivity measurements are done at 1.0 GPa, 1.5 GPa and 2.2 GPa. The sharp increase in resistance at ...
  • Pressure structure of solar coronal loops. III 
    Sreedharan, T. D; Sasidharan, K; Satya Narayanan, A; Krishan, V (Springer Netherlands, 1992-12)
    The theory of ideal magnetohydrodynamic turbulence in cylindrical geometry is used to study the steady-state structure of a coronal loop. The pressure profile is derived from MHD equations by representing the velocity and ...
  • Primary Mirror Active Control System Simulation of Prototype Segmented Mirror Telescope 
    Prasanna Deshmukh; Mishra, Deepta Sundar; Parihar, P. S; Vedashree (IEEE, 2017-01)
    The upcoming large astronomical telescopes are trending towards the Segmented Mirror Telescope (SMT) technology, initially developed at the W M Keck Observatory in Hawaii, where two largest SMTs in the world are in use. ...
  • Primordial black holes as heat sources for living systems with longest possible lifetimes 
    Sivaram, C; Arun, K; Kiren, O. V (Springer, 2014-06)
    Just forty years ago, Hawking wrote his famous paper on primordial black holes (PBH). There have been since innumerable discussions on the consequences of the existence of such exotic objects and ramifications of their ...
  • Primordial Flares, Flux Tubes, and Gamma-ray Bursts 
    Hiremath, K. M (International Astronomical Union, 2000)
    Given the prevailing physical conditions in the cosmic environment, the similarity of solar transients and cosmic gamma-ray bursts suggests that the most promising energy source for the latter may be primordial flares, ...
  • Primordial non-Gaussian signatures in CMB polarization 
    Vidhya, G; Pravabati, C; Yogendran, K. P; Park, C (IOP Publishing, 2015-02)
    We study the signatures of local type primordial non-Gaussianity, parametrized by fNL, of scalar perturbations in CMB polarization using the probability distribution functions, Minkowski Functionals and Betti numbers. We ...
  • Primordial planets predominantly of dark Matter 
    Sivaram, C; Arun, K; Kiren, O. V (Springer, 2019-05)
    Cosmic structure formation is thought to occur as a bottom-up scenario, i.e. the lightest objects would have formed first. It has been suggested that the earliest structures to form could have been primordial planets. Here ...
  • Primordial Rotation of the Universe, Hydrodynamics, Vortices and Angular Momenta of Celestial Objects 
    Sivaram, C; Arun, K (Bentham Open, 2012-03)
    The origin of rotation or spin of objects, from stars to galaxies, is still an unanswered question. Even though there are models which try to explain this, none of them can account for the initial impulse that gave rise ...
  • Principles of Invariance in Radiative Transfer 
    Peraiah, A (Kluwer Academic Publishers, 1999-01)
    We have reviewed the principle of invariance, its applications and its usefulness for obtaining the radiation field in semi-infinite and finite atmospheres. Various laws of scattering in dispersive media and the consequent ...
  • Probability density functions to represent magnetic fields at the solar surface 
    Sampoorna, M (Springer, 2010)
    Numerical simulations of magneto-convection and analysis of solar magnetogram data provide empirical probability density functions (PDFs) for the line-of-sight component of the magnetic field. In this paper, we theoretically ...

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