Radio-Frequency Radiation from Tycho Brahe's Supernova (A.D. 1572)

  title={Radio-Frequency Radiation from Tycho Brahe's Supernova (A.D. 1572)},
  author={R. Hanbury Brown and Cyril Hazard},
SINCE the discovery of localized sources of extraterrestrial radio-frequency radiation in 19481, surveys have been carried out over the whole sky2,3, and the positions and intensities of about one hundred sources are now known. Although a few of these sources have been identified with extra-galactic nebulæ3–5 it is generally considered that the majority must lie within the Galaxy with a distribution, and perhaps a density, similar to that of the common visual stars6. However, it has not yet… 
Variation of the intensity of cosmic radiation during earth’s geological history and their possible influence on life’s evolution
It has been shown that both the Crab Nebula-s radio and optical emissions are caused by relativistic electrons that move in magnetic fields. As a consequence this nebula contains a great number of
Radio-astronomy, Radiometry and Infra-red Techniques
The year 1932 was one which had no great apparent significance for navigators, and yet it saw the commencement of two new lines of research which today, after an interval of more than a
Radio Sources and the Milky Way at 440 MC
The brighter radio sources and two regions of the Milky Way were surveyed at 440 mc with equipment mounted in the Naval Research Laboratory's 50-foot radio telescope. An attempt was made to keep the
Thermal X‐Ray Emission from Young Type Ia Supernova Remnants
In the years since the launch of Chandra and XMM-Newton, the increase in the quantity and quality of X-ray observations of supernova remnants (SNRs) has been spectacular. In many of the brightest
Three-dimensional numerical investigations of the morphology of Type Ia SNRs
We explore the morphology of Type Ia supernova remnants (SNRs) using threedimensional hydrodynamics modeling and an exponential density profile. Our model distinguishes ejecta from the interstellar
Radio-Astronomy and Navigation
  • C. M. Cade
  • Physics
    The Journal of the Royal Aeronautical Society
  • 1958
The difficulties of determining latitude and longitude under adverse weather conditions, when neither the Sun nor stars can be sighted, are well-known, and the advantages of a non-visual system of
A New Method to Estimate Light Echo Apparent Proper Motion Vectors
This thesis presents a new method to estimate the Apparent Proper Motion (APM) vector and its uncertainty for supernova light echoes (LEs) and tests its usefulness in practice on LEs due to two old
Thermal X-ray Emission From Young Type Ia Supernova Remnants
S'explora la relacio entre les supernoves de tipus Ia i l'emissio de raigs X termics que prove dels seus remanents de supernova, fent servir hidrodinamica unidimensional i calculs autoconsistents


XIII. Extra-galactic radio-frequency radiation
Summary It has been shown previously that radio-frequency radiation is being received on the earth from the extra-galactic nebula N.G.C. 224 (M. 31). This paper reports some initial attempts to
Radio-frequency Radiation from the Great Nebula in Andromeda (M.31).
THE experiments of Bolton and Stanley1, and of Ryle and Smith2,3, using a radio interferometer have shown that a significant part of the extra-terrestrial radio noise is associated with point sources
The Crab Nebula.
Variable Source of Radio Frequency Radiation in the Constellation of Cygnus
COSMIC or galactic noise was discovered by Jansky1 in 1931; but its exact origin has remained uncertain. It is generally supposed to originate from collisions in interstellar matter2; but there are