IIA Institutional Repository

Browsing IIAP Publications by Title

Browsing IIAP Publications by Title

Sort by: Order: Results:

  • Clustering of low-mass stars around Herbig Be star IL Cep – evidence of ‘Rocket Effect’ using Gaia EDR3 ? 
    Arun, R; Mathew, B; Maheswar, G; Baug, Tapas; Kartha, S. S; Selvakumar, G; Manoj, P; Shridharan, B; Anusha, R; Narang, Mayank (Oxford University Press on behalf of the Royal Astronomical Society, 2021-10)
    We study the formation and the kinematic evolution of the early-type Herbig Be star IL Cep and its environment. The young star is a member of the Cep OB3 association, at a distance of 798 ± 9 pc, and has a ‘cavity’ ...
  • CME productivity associated with Solar Flare peak X-ray emission flux 
    Suryanarayana, G. S; Balakrishna, K. M (Elsevier B.V, 2018-05-01)
    It is often noticed that the occurrence rate of Coronal Mass Ejections (CMEs) increases with increase in flare duration where peak flux too increase. However, there is no complete association between the duration and peak ...
  • CMEs evolve in the interplanetary medium to double their predicted geo-effectiveness 
    Soni, Shirsh Lata; Maharana, Anwesha; Guerrero, Antonio; Mishra, Wageesh; Poedts, Stefaan; Thampi, Smitha (EDP Sciences, 2024-06)
    We explore the impact of interactions between coronal mass ejections (CMEs) – known as CME–CME interactions – on Earth using remote-sensing and in situ observations and estimate the amplification of the geo-effectiveness ...
  • The CMF as provenance of the stellar IMF? 
    Anathpindika, S (Elsevier B.V., 2011-12)
    In the present work we examined the hypothesis that, a core mass function (CMF), such as the one deduced for cores in the Orion molecular cloud (OMC), could possibly be the primogenitor of the stellar initial mass function ...
  • CN 1-1 - A bipolar type I planetary nebula 
    Bhatt, H. C (European Southern Observatory, 1989-04)
    Polarization measurements of Cn 1-1 are interpreted as due to scattering by nebular dust. It is suggested that the nebula has a bipolar morphology. This, together with the enhanced nitrogen abundance in the nebula, supports ...
  • CN 1-1 - A peculiar compact planetary nebula 
    Bhatt, H. C; Mallik, D. C. V (The European Southern Observatory, 1986-11)
    Cn 1-1 is an emission-line object that shows strong emission lines characteristic of high density planetary nebulae superposed on the stellar spectrum of an F5 III-IV star. The authors estimate the absolute luminosity of ...
  • CO in the IUE spectrum of Comet Bradfield (1979l) 
    Murty, P. S (D.Reidel Publishing Co.,, 1982-02)
    New identifications are reported of the fourth positive bands and Cameron bands of CO in the IUE satellite spectrum of Comet Bradfield (1979l). Although the predicted band intensities as well as the band identifications ...
  • CO outflow survey of 68 very low luminosity objects: a search for proto-brown-dwarf candidates 
    Kim, G; Lee, C.W; Maheswar, G; Kim, Mi-Ryang; Archana Soam; Saito, Masao; Kiyokane, Kazuhiro; Kim, Sungeun (IOP Publishing, 2019-02)
    We present the results of a systematic search for molecular outflows in 68 Very Low Luminosity Objects (VeLLOs) from single-dish observations in CO isotopologues, finding 16 VeLLOs that show clear outflow signatures in the ...
  • Coherent Curvature Radio Emission and Polarization from Pulsars 
    Gangadhara, R. T; Han, J. L; Wang, P. F (IOP Publishing, 2021-04-20)
    We have developed a collective plasma radio emission model for the radio pulsars based on the implications of the tangent model. The secondary pair (electron–positron) plasma particles get arranged into a phased array like ...
  • Coherent Plasma Processes and the Continuum Emission in Active Galactic Nuclei 
    Krishan, V; Wiita, P. J (Royal Astronomical Society, 1990-10)
    Stimulated Raman scattering processes appear to be able to produce the typical electromagnetic continuum of an active galactic nucleus (AGN). Seed photons beat through Raman forward-scattering to create Langmuir plasma ...
  • Coherent Radio Beacon Experiment (CRABEX) for tomographic imaging of the equatorial ionosphere in the Indian longitudes – Preliminary results 
    Thampi, S. V; Ravindran, S; Devasia, C. V; Sreelatha, P; Pant, T. K; Sridharan, R; Venkata Ratnam, D; Sarma, A. D; Raghava Reddi, C; Jessy Jose; Sastri, J. H (Elsevier, 2007-02)
    To investigate the equatorial ionospheric processes like the equatorial ionization anomaly (EIA), equatorial spread F (ESF) and their inter relationships, a network of ground based stations receiving the 150 and 400 MHz ...
  • Collective acceleration in solar flares 
    Barletta, W; Gershtein, S. S; Krishan, V; Reiser, M; Sessler, A. M; Xie, M (The Royal Swedish Academy of Sciences, 1994)
    Solar flare data are examined with an eye to seeing if they suggest collective acceleration of ions. That, in fact, seems to be the case. The collective acceleration mechanism of Gershtein is reviewed and the possibilities ...
  • Collision between dissimilar clouds: stability of the bow-shock, and the formation of pre-stellar cores 
    Anathpindika, S (Wiley Blackwell, 2010-07)
    We use smoothed particle hydrodynamics (SPH) to simulate a head-on collision between two physically dissimilar clouds, and investigate the dynamical stability of the post-collision bow-shock. The shock-front appears ...
  • Collisional redistribution effects on line polarization in spherical atmospheres 
    Nagendra, K. N (Blackwell Publishing, 1995-05)
    The polarization of resonance and subordinate lines formed in spherically symmetric media is studied. The effect of collisions is shown by taking a combination of partial redistribution mechanisms represented by the functions ...
  • Collisions of galaxies of different masses, forms and sizes 
    Namboodiri, P. M. S; Sastry, K. S; Narasimhan, K. S. V. S (Springer, 2001-03)
    We study the tidal effects of close collisions between two spherical galaxies of various mass and mass distributions by numerical simulations. The galaxies are represented by polytropes of indices n=4 and n=0 which denote ...
  • Colonial Astronomy as an element of Empire in British India 
    Kapoor, R. C; Orchiston, Wayne (University of Science and Technology of China, 2023-03)
    In this paper we outline the efforts made by the East India Company, the British colonial authorities, visiting astronomical expeditions and expatriate amateur astronomers to establish astronomical observatories in India ...
  • The colors of Am Stars 
    Shylaja, B. S; Babu, G. S. D (Astronomical Society of the Pacific, 1993-01)
    The energy distribution of the Am stars are affected by the line blanketing, which appears as a deviation in the behaviour of color indices with reference to the normal stars. In this paper we study the various color indices ...
  • The Colors of Am-Stars 
    Shylaja, B. S (Astronomical Society of the Pacific, 1993-01)
  • Colour photography of solar corona during the total solar eclipse of October 24, 1995 
    Gopalakrishna Reddy, M; Rama Rao, P. V. S; Krishna Rao, D. V (Indian Institute of Astrophysics, Bangalore, 1997)
    Very good color pictures of the solar corona of 24th October 1995 were taken by a team from Andra University, from Budge Budge, Calcutta. A total of 36 pictures recorded the various phases of the eclipse from the first to ...

Search DSpace


Browse

My Account