Journal ArticleDOI
Observation of a Rapidly Pulsating Radio Source
TLDR
In this article, the first report of a curious class of astronomical radio sources, distinguished by their rapid and extremely regular pulsations, was made by Hewish et al. They are now understood to be rapidly rotating, magnetized neutron stars, or pulsars.Abstract:
Unusual signals from pulsating radio sources have been recorded at the Mullard Radio Astronomy Observatory The radiation seems to come from local objects within the galaxy, and may be associated with oscillations of white dwarf or neutron stars 1968 saw the first report of a curious class of astronomical radio sources, distinguished by their rapid and extremely regular pulsations Hewish et al associated them with unusually stable oscillations in compact stars They are now understood to be rapidly rotating, magnetized neutron stars, or pulsarsread more
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Dynamical Phase Transition in Neutron Stars
Rajendra Prasad,Ritam Mallick +1 more
TL;DR: In this paper, the authors studied the dynamical evolution of the shock front in a neutron star and found that as the shock wave propagates outwards, its intensity decreases with time, however the shock velocity peaks up and reaches a value close to that of light, indicating rapid phase transition in neutron star taking place on a timescale of some tens of microseconds.
Journal ArticleDOI
Black holes in gamma ray bursts and galactic nuclei
Remo Ruffini,Carlos R. Argüelles,Bernardo M. O. Fraga,Andrea Geralico,Hernando Quevedo,Jorge A. Rueda,Ivan Siutsou +6 more
TL;DR: In this paper, a unified approach based on a system of massive self-gravitating neutrinos in general Relativity was proposed to solve the problem of the existence of a Black Hole in the Center of our Galaxy.
Dissertation
Spherical symmetry and hydrostatic equilibrium in theories of gravity
TL;DR: In this article, an upper bound on the mass-radius ratio Mg/R for charged solutions in de Sitter space is derived, this bound implies hydrostatic equilibrium, and a conservation equation is obtained using an analogous method to obtaining the Tolman-Oppenheimer-Volkoff equation.
Journal ArticleDOI
Interstellar Scintillations of Pulsar Radiation
TL;DR: Time fluctuations in the intensity of pulsed radiation from CP 0834, CP 1133, AP 1237, and CP 1919 have been investigated and power spectra, modulation indices, frequency distributions, and decorrelation frequencies are consistent with scintillation theory.
Autonomous Spacecraft Navigation With Pulsars
TL;DR: In this article, the basic principle of spacecraft navigation using pulsars and report on the current development status of this novel technology is described and reported on the application in future astronautics.
References
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Journal ArticleDOI
Interplanetary Scintillation of Small Diameter Radio Sources
TL;DR: In this article, the authors used the black-body equations to calculate the increased radiation appropriate to the observed brightness increase in the star over a 1,000 A.u. band-width at 5,400 A.U.
Journal ArticleDOI
Normal modes of radial pulsation of stars at the end point of thermonuclear evolution
David W. Meltzer,Kip S. Thorne +1 more
Journal ArticleDOI
Energetic Particles from the Sun
C. E. Fichtel,F. B. Mcdonald +1 more
TL;DR: In this article, the authors discuss the association of solar cosmic rays with flare association, solar particle acceleration, recurrence and low energy solar particle events, and discuss the effects of solar particle particle acceleration.
Journal ArticleDOI
Possible magnetospheric phenomena associated with neutron stars
TL;DR: In this paper, it was shown that the importance of the early cooling by emission of neutrinos from the Urca process has been underestimated in the foregoing investigations, and the calculations of Miss Tsuruta indicate that a neutron star will rapidly cool to 3 or 4 × 106 °K, but that after 105 years its surface temperature will still be about 2 × 106°K.