Appearance of Relativistically Expanding Radio Sources

  title={Appearance of Relativistically Expanding Radio Sources},
  author={Martin J. Rees},
  • M. Rees
  • Published 30 July 1966
  • Physics
  • Nature

Gravitational lenses as high-resolution telescopes

Star formation across cosmic time with radio surveys. The promise of the SKA

This lecture briefly reviews the major recent advances in radio astronomy made possible by ultra-deep surveys, reaching microJansky flux density levels. A giant step forward in many fields, including

Modélisation de l'émission des noyaux actifs de galaxie à l'ère Fermi

Les noyaux actifs de galaxie (NAG) sont les objets les plus energetiques de l'univers. Cette incroyable puissance provient de l'energie gravitationnel de matiere en rotation autour d'un trou noir

A Kinematic Model for Gamma Ray Bursts and Symmetric Jets

Gamma ray bursts (GRB) occur at random points in the sky at cosmological distances. The spectra evolve through X-ray, optical region to possibly radio frequency. Though there are some models, the

The classification of blazars

Blazars are believed to be radio galaxies with their jets oriented at relatively small angles with respect to our line of sight. However, their separation from radio galaxies as well as their

The elementary spike produced by a pure e$^+$e$^-$ pair-electromagnetic pulse from a Black Hole: The PEM Pulse

In the framework of the model that uses black holes endowed with electromagnetic structure (EMBH) as the energy source, we study how an elementary spike appears to the detectors. We consider the

Observations of X-ray counterparts to gamma-ray bursts in RXTE's All-Sky Monitor

In this thesis, I report on a system I desigied ad implemented to rapidly indentify and localize new transient X-ray sources bSsetved by the All-Sky Monitor (ASM) on the Rossi X-ray Timing Explorer

Simulations of Gamma-Ray Bursts from External Shocks: Time Variability and Spectral Correlations

We compute burst spectra and time structures arising from synchrotron and inverse Compton scattering by nonthermal electrons accelerated in shocks that form during the interaction between a thin

Impact of Relativistic Fireballs on External Matter: Numerical Models of Cosmological Gamma-Ray Bursts

We numerically model the interaction between an expanding fireball and a stationary external medium whose density is either homogeneous or varies with distance as a power law. The evolution is

The Average Radial Speed of Light From Near to Far Space Surrounding the Kerr–Newman Super-Gravitational Source

  • Ting-Hang Pei
  • Physics
    Frontiers in Astronomy and Space Sciences
  • 2022
The Kerr–Newman metric is used to discuss the average radial speed of light from near to far space surrounding the super-gravitational source like a black hole which can be observed by a




The spectra of two quasi-stellar radio sources, 3C 48 and 3C 273, have been studied in detail. We present as full conclusions as we can derive from the redshift, luminosity, emission-hne, and

Nature of quasi-stellar objects

Quasar properties from cosmological nature, discussing red shift, luminosity, radiation intensity, absorption features, distribution, chemical composition, etc

Quasi-Stellar Sources: Variation in the Radio Emission of 3C 273

Evidence is presented for the first time for large fractional variations in the radio emission of the quasi-stellar sources 3C 273, 3C 279, and 3C 345, all of which have flat radio spectra at

Spectrum of the Intensity Variations in 3C 273B

Study of several dijfferent model sources shows that the observed dependence of the intensity variations on frequency can best be explained by an increase of the electron density in a source region about 2 parsecs in diameter, consistent with the distance to 3C 273 determined from Hubble's law and the observed red shift.

New Limits to the Angular Sizes of Some Quasars

IN previous experiments at Jodrell Bank the angular sizes of discrete radio sources have been investigated by means of long baseline interferometers1,2. The highest resolving power used previously