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Browsing by Subject "Neutron Stars"

Browsing by Subject "Neutron Stars"

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  • Astrophysical consequences of neutron-antineutron oscillations 
    Krishan, V; Sivaram, C (Springer, 1982-10)
    Grand unified theories predict baryon number violating interactions and one of the implications of this is the possible existence of neutron-antineutron oscillations. The neutron-antineutron oscillations have been considered ...
  • Asymmetric lepton production in a universe with non-zero baryon number 
    Sivaram, C (Springer, 1982-03)
    Due to processes occurring during different stages of stellar evolution, a universe with a net baryon number develops an excess of neutrinos and positrons over antineutrinos of the same order as the observed relative ...
  • A classification scheme for pulsars 
    Kochhar, R. K (Nature Publishing Group, 1977-11)
    The implications of a pulsar classification scheme are discussed. Three types of pulsars are distinguished - Type S (S for single) from supernova explosions of single stars; type D (D for disrupted) from binaries disrupted ...
  • Diamagnetic screening of the magnetic field in accreting neutron stars 
    Konar, S; Choudhuri, A. R (Astronomical Society of India, 2002-09)
    A possible mechanism for screening of the surface magnetic field of an accreting neutron star, by the accreted material, is investigated. In particular, we investigate the nature of the evolution of the internal ...
  • Fast pulsars - Effects of spacetime curvature and rotation on the pulse characteristics 
    Kapoor, R. C; Datta, B (The American Astronomical Society, 1985-10)
    The effects of spacetime curvature and rotation on the pulse profile of fast pulsars are studied using a rotationally perturbed spherical metric and a representative choice of the equation of state for neutron star matter. ...
  • Frequency shifts and line broadening of radiation from rotating neutron stars 
    Kapoor, R. C; Datta, B (The Royal Astronomical Society, 1984-08)
    The frequency shifts and line broadening of radiation from the surface of rapidly rotating neutron stars are calculated using a rotationally perturbed interior spherical metric and a representative choice of the equation ...
  • IIA Newsletter, Vol.4, No.4, October 1989 
    Prabhu, T. P; Pati, A. K (Indian Institute of Astrophysics, 1989-10)
  • Limits on rotation-induced characteristics of radiation from stable rapidly rotating neutron stars 
    Datta, B; Kapoor, R. C (The American Astronomical Society, 1988-08)
    Results are presented of a study of frequency shifts in radiation from the surface of rapidly rotating neutron stars and rotation-induced spectral line broadening as a function of their mass. It is found that, despite large ...
  • Luminosities of Disk Accreting Non Magnetic Neutron Stars 
    Thampan, A. V (Indian Institute of Astrophysics, Bangalore, 1999)
  • Magnetic field induced metal-insulator transition in a one-dimensional chain: application to neutron star atmospheres 
    Chatterjee, S (Kluwer Academic Publishers, 1989-12)
    It is shown that, in the non-interacting limit, a one-dimensional metallic system has a transition to an insulating phase, in presence of external magnetic field H, if mu(B)H is greater than E(B), where mu(B) is the Bohr ...
  • The maximum mass of neutron stars 
    Srinivasan, G (Astronomical Society of India, 2002-09)
    The choice of a suitable topic for this talk posed a problem for me. Should I talk about some work I have done recently? Or, should I talk about something which is not yet resolved, but of great contemporary Significance? ...
  • A model for the millisecond pulsar PSR 1937 + 214 
    Kochhar, R. K; Sivaram, C (Springer, 1984-01)
    The authors suggest a model for the millisecond pulsar PSR 1937+214, according to which the immediate progenitor of the pulsar was a binary consisting of two neutron stars of unequal mass. The heavier neutron star was spun ...
  • The nature of the compact object in quiescent SXTs 
    Sutaria, F. K; Kolb, U. C; Kuulkers, E; Charles, P; Chaty, S (American Institute of Physics, 2008-10)
    We report on the observation of two quiescent stage Soft X-ray transients-the BH-SXT GS1124-68 and the NS-SXT J2123-058.
  • On the orientation of the pulsar space velocity vector relative to the spin axis 
    Kochhar, R. K (Nature Publishing Group, 1977-05)
    It is noted that the angle between the space velocity vector and the spin axis projected on the plane of the sky has a value close to zero deg for three pulsars, close to 90 deg for six others, and between zero and 90 deg ...
  • Phase transition to quarks in dense neutron matter - Effect of instanton interactions 
    Datta, B (Kluwer Academic Publishers, 1988-07)
    Instanton effects are found to affect non-trivially the neutron matter to quark matter phase transition density. The relevance of the results for neutron stars is pointed out.
  • Rotating neutron star structure - Implications of the millisecond pulsar PSR 1937 + 214 
    Ray, A; Datta, B (The American Astronomical Society, 1984-07)
    Rapidly rotating fluid objects of a given mass can remain stable only up to a critical angular speed, beyond which they may undergo instabilities leading to disruption. A semi-Newtonian condition of rotational stability ...
  • The sky was his limit! 
    Sivaram, C (Deccan Herald, 2010-10-19)
    October 18 was the birth centenary of the Physics Nobel Prize winner for 1983 S Chandrasekhar. The astrophysicist has come to be known for the Chandrasekhar limit, which concerns a class of stars called white dwarfs. The ...
  • Spectral evolution of LMXB GX 349+2 
    Agrawal, V; Sreekumar, P (Astronomical Society of India, 2002-09)
    Z sources are the brightest low-mass X-ray binaries (LMXB) believed to contain magnetized neutron stars. They trace a '2' shaped track in theil X-ray colour-colour diagram. It is thought that the accretion rate increases ...
  • Torsion Modified Plasma Screening in Astrophysics 
    Sivaram, C; de Andrade, L. C. G (World Scientific Publishing Company, 2000-06)
    The torsion modified Maxwell–Proca equations when applied to describe a plasma is shown to lead to a correction to the Debye screening length. For hot new born neutron stars the torsion correction is shown to be significant. ...
  • Upper mass limit for neutron star stability against black hole formation 
    Krishan, V; Kumar, N (D.Reidel Publishing Co.,, 1978-08)
    Starting from the exact general relativistic expression for the total energy of selfgravitating spherically distributed matter and using the minimum energy principle, we calculate the upper mass limit for a neutron star ...

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