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Browsing by Author "Kapoor, R. C"

Browsing by Author "Kapoor, R. C"

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  • The angular appearance of white holes 
    Narlikar, J. V; Kapoor, R. C (D. Reidel Publishing Company, 1978-01)
    It is shown that non-radial light rays emitted from the surface of a white hole can emerge from inside the Schwarzschild barrier. The upper limit on their impact parameter is calculated under the requirement that such rays ...
  • Are pulsars strange? 
    Kapoor, R. C; Shukre, C. S (Astronomical Society of India, 2001)
    Pulsar radio pulses are made up of the so called core and conal components. A remarkably precise relation for core component widths, found observationally, in effect specifies the size of the polar cap on pulsars. Inclusion ...
  • Are radio pulsars strange stars? 
    Kapoor, R. C; Shukre, C. S (EDP Sciences, 2001-08)
    A remarkably precise observational relation for pulse core component widths of radio pulsars is used to derive stringent limits on pulsar radii, strongly indicating that pulsars are strange stars rather than neutron stars. ...
  • Black Holes 
    Kapoor, R. C (Astronomical Society of India, 1976-03)
  • Black holes odyssey 
    Kapoor, R. C (The Hawk, 1979-07-01)
  • Blueshift and spectral features of the gravitational searchlight 
    Chitre, S. M; Narlikar, J. V; Kapoor, R. C (Plenum Publishing Corporation, 1975-10)
    It is shown that a photon emitted in the forward direction by a charged particle moving in an equatorial circular orbit centred on a highly collapsed mass M, the radius being slightly in excess of one and a half times the ...
  • Brahmanda- Ek Samkshipta Parichaya (In Hindi) 
    Kapoor, R. C (Indian Institute of Astrophysics, 2011-04)
  • Bright comets in 2013 
    Kapoor, R. C (2013)
  • Broad Band Photometry of the Solar Corona of 1983, June 11 
    Sivaraman, K. R; Singh, J; Kapoor, R. C; Kariyappa, R (Indian Institute of Astrophysics, Bangalore, 1985-11)
    The solar corona was photographed at an effective wavelength of 6300A during the total eclipse of 1983, June 11 at Indonesia. From the isophotes of the corona, the intensity distributions along the equator, poles, streamers ...
  • Central engine or locomotive 
    Kapoor, R. C (Astronomical Society of India, 1986-09)
    The astrophysical aspects of proposals of escape of supermassive blackholes from galactic nuclei and their implications in relation to quasars are discussed. We conclude that high velocity recoil of the central engine can ...
  • Chasing the Total Solar Eclipse 2019 
    Kapoor, R. C (NISCAIR-CSIR, India, 2019-09)
    A solar eclipse with a totality of a rather long duration took place on 2 July 2019. The path of totality started east of New Zealand in the southern Pacific Ocean and passed over parts of Chile and Argentina. The maximum ...
  • 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 ...
  • Comet McNaught (C/2009 R1): A view of a lifetime 
    Kapoor, R. C (The Hawk, 2010-06-12)
  • Comet tales from India: Donati's Comet of 1858 (C/1858 L1 Donati) 
    Kapoor, R. C (National Astronomical Research Institute of Thailand, 2021-03)
    On 02 June 1858 at the Observatory of Florence, Giambattista Donati (1826–1873) discovered a faint nebulous patch what was destined to become one of the most brilliant comets in history. Named after him, Donati’s Comet ...
  • Comet tales from India: the Great September Comet of 1882 (C/1882 R1) 
    Kapoor, R. C (National Astronomical Research Institute of Thailand, 2020-08)
    This paper brings together India-centric accounts of the Great Comet that appeared in 1882. It grew to be the most magnificent one seen since the Great Comet of 1843, and was observed from throughout the Indian Subcontinent. ...
  • The contribution of light bending and redshift to the pulse characteristics of a pulsar in the case of smaller neutron stars 
    Kapoor, R. C (The American Astronomical Society, 1991-09)
    The effect of light bending and redshift on pulsar beam characteristics is estimated using the weak form of the Kerr metric applicable to a slow-rotating neutron star. The beam is found to diverge by a factor of 2 or less ...
  • The day of the dark Sun 
    Kapoor, R. C (The Hawk, 1980-06-15)
  • Decollimation of a jet due to spacetime curvature 
    Kapoor, R. C (International Astronomical Union, 1986)
  • Deep impacting the Comet - 103P/Hartley 2 on Nov 4, 2010 
    Kapoor, R. C (The Hawk, 2010-09-17)
  • Did IBN SINA Observe The Transit of Venus 1032 AD? 
    Kapoor, R. C (Indian National Science Academy, 2013-09)
    The Persian polymath Ab ū AīIbn Sīnā (980-1037 AD), known to early Western sources as Avicenna, records in one of his works, Compendium of the Almagest that ‘I say that I saw Venus as a spot on the surface of the sun’. ...

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