Showing papers in "The Astrophysical Journal in 1969"
987Â citations
806Â citations
758Â citations
755Â citations
TL;DR: Two armed spiral galactic shock waves as triggering mechanism for gravitational collapse leading to star formation, considering gaseous disk motion using Schmidt model, were proposed in this article, where the authors used the Schmidt model for star formation.
Abstract: Two armed spiral galactic shock waves as triggering mechanism for gravitational collapse leading to star formation, considering gaseous disk motion using Schmidt model
610Â citations
TL;DR: Pulsar model with seat as rotating neutron star having dipolar magnetic field not parallel to rotation axis is presented in this article, where the magnetic field is not parallel with the rotation axis.
Abstract: Pulsar model with seat as rotating neutron star having dipolar magnetic field not parallel to rotation axis
526Â citations
524Â citations
492Â citations
TL;DR: Optically thin gas surrounding X ray source, plotting electron temperature and ionization equilibrium of hydrogen, He, carbon, nitrogen, oxygen and neon as mentioned in this paper, was used to calculate the equilibrium of electron temperature.
Abstract: Optically thin gas surrounding X ray source, plotting electron temperature and ionization equilibrium of hydrogen, He, carbon, nitrogen, oxygen and neon
440Â citations
TL;DR: Density wave theory of galactic spirals, discussing hydrogen distribution, young star distribution, stellar migration, magnetic field structure, density waves in stellar formation, etc as discussed by the authors, etc.
Abstract: Density wave theory of galactic spirals, discussing hydrogen distribution, young star distribution, stellar migration, magnetic field structure, density waves in stellar formation, etc
431Â citations
TL;DR: Ionization equilibrium and radiative cooling of high temperature low density plasma, noting cosmic gas cooling curve of line emission from oxygen ion transitions, were discussed in this paper, where the authors also showed that the line emission of oxygen ion transition can be seen as a sign of low-density plasma.
Abstract: Ionization equilibrium and radiative cooling of high temperature low density plasma, noting cosmic gas cooling curve of line emission from oxygen ion transitions
TL;DR: Stochastic and ergodic aspects of magnetic lines of force, discussing cosmic ray diffusion in interplanetary magnetic field are discussed in this article, where the authors also consider the effects of cosmic ray on the magnetic field.
Abstract: Stochastic and ergodic aspects of magnetic lines of force, discussing cosmic ray diffusion in interplanetary magnetic field
TL;DR: In this article, solar wind-induced torque calculated considering special and general relativistic effects, extending method to pulsar rotational model was presented. But the method was not suitable for the pulsar model.
Abstract: Solar wind-induced torque calculated considering special and general relativistic effects, extending method to pulsar rotational model
TL;DR: In this article, the intensity, spectrum and polarization of gyrosynchrotron radiation from magnetoactive plasma electrons distribution are analyzed. But the authors focus on magneto-active plasma electron distribution.
Abstract: Intensity, spectrum and polarization of gyrosynchrotron radiation from magnetoactive plasma electrons distribution
TL;DR: Group velocity of spiral density waves propagating in disk galaxies implying self-destruction, discussing possible replenishment sources as mentioned in this paper. But the authors did not consider the effects of the density wave on the galaxies.
Abstract: Group velocity of spiral density waves propagating in disk galaxies implying self destruction, discussing possible replenishment sources
TL;DR: In this article, the mass and radius relations for zero temperature spheres of chemical elements, using equation of state and numerical integration, were derived for zero-temperature spheres of the chemical elements.
Abstract: Mass and radius relations for zero temperature spheres of chemical elements, using equation of state and numerical integration
TL;DR: Infinitesimal bending oscillations and/or responses of thin rotating disks applied to thin disk galaxies are discussed in this article, discussing Magellanic Cloud passage near galactic center.
Abstract: Infinitesimal bending oscillations and/or responses of thin rotating disks applied to thin disk galaxies, discussing Magellanic Cloud passage near galactic center
TL;DR: Doubling principle providing rapid and accurate results for problem of diffuse reflection from plane parallel atmosphere as mentioned in this paper, where the doubling principle was used to solve the problem of diffusing reflection from parallel atmosphere.
Abstract: Doubling principle providing rapid and accurate results for problem of diffuse reflection from plane parallel atmosphere
TL;DR: Bolometric luminosity-red shift relations of Friedmann dust universes corrected for inhomogeneities, using locally inhomogeneous Swiss cheese models as discussed by the authors, were used to calculate the luminosity and red shift relations.
Abstract: Bolometric luminosity-red shift relations of Friedmann dust universes corrected for inhomogeneities, using locally inhomogeneous Swiss cheese models
TL;DR: Broadband photometry for circumstellar IR emission from cool stars, considering giant and carbon stars, was proposed in this paper, where the authors considered two types of stars, namely, the giant and the carbon stars.
Abstract: Broadband photometry for circumstellar IR emission from cool stars, considering giant and carbon stars
TL;DR: In this paper, the authors calculate molecular equilibrium of condensates and gaseous compounds in stellar atmospheres using O to C abundance ratios of stars with various O-to-C abundance ratios.
Abstract: Circumstellar grain compositions of stars with various O to C abundance ratios, calculating molecular equilibrium of condensates and gaseous compounds in stellar atmospheres