Results 271 to 280 of about 2,015,467 (303)
Some of the next articles are maybe not open access.
Continuum Radio Emission and Galactic Structure
Symposium - International Astronomical Union, 1974Recent studies of high latitude brightness have shown that in several regions a significant proportion of it is due to loop features. The largest of these are now thought to be local (within a few hundred parsecs) and perhaps to be due to supernova events.Aperture synthesis maps of 45 external spiral galaxies have shown large-scale continuum nonthermal
openaire +1 more source
Radio Continuum Emission by Spiral Arms
Publications of the Astronomical Society of the Pacific, 1960Fig. 1. The spiral pattern of the Galaxy according to B. Y. Mills ; it is defined by the observed steps in the distribution of radio brightness with longitude (see Figure 2). Directions of well-defined steps are indicated by the lines of sight radiating from the sun; less pronounced ones are shown as dashed lines.
openaire +1 more source
Radio Continuum Emission at 21 cm near Stephan's Quintet
Nature, 1972AN area about one degree square centred at α = 22 h 33.80 m, δ = 33° 41.0′ (1950) near Stephan's Quintet of galaxies has been observed with the Westerbork Synthesis Radio Telescope at 21.2 cm. The measurements consist of 12 h registrations at 40 interferometer spacings from 36 to 1,440 m in intervals of 36 m.
R J, Allen, J W, Hartsuiker
openaire +2 more sources
Radio Continuum Emission from Galaxies
1975The continuum radio emission detected from external galaxies is produced either by thermal process or by the synchrotron process with the latter dominating in most cases. For the synchrotron process the volume emissivity is given by $$ \varepsilon \left( \upsilon \right) = {\rm{n}}{\mkern 1mu} {{\rm{B}}^{\frac{{{\rm{1 + }}\gamma }}{2}}} {\upsilon ^{
openaire +1 more source
Radio Continuum Emission from Sculptor Galaxies
Publications of the Astronomical Society of Australia, 1986AbstractThe five major members of the Sculptor Group of galaxies and NGC 45 have been observed with the Molonglo observatory synthesis telescope. NGC 247 and NGC 300 were not detected and upper limits to their 843 MHz flux densities are given. Radio emission from NGC 7793 is discussed with particular attention to its morphology, radial dependence ...
openaire +1 more source
Radio Continuum and CO emission in spiral galaxies
2023We have studied the relationship between the Radio Continuum (RC) and CO emission for a set of galaxies selected from the BIMA SONG sample. By combining new 20 cm VLA B-array observations with BIMA maps it has been possible to investigate the behaviour of the RC/CO correlation at matched resolution down to an angular size of about 6''.
Paladino, Rosita +7 more
openaire +1 more source
Continuum Radio Emission from the Vicinity of Pulsars
Nature Physical Science, 1973Blandford et al.1 suggest the possibility of the existence of weak radio haloes around old pulsars. They attempt to explain the peculiar non-thermal shell source near PSR1919 + 21 (refs. 2–4) and suggest observations of the surroundings of pulsars to be carried out.
openaire +1 more source
Properties of the Radio Continuum Emission from Interacting Galaxies
Nature, 1973SEVERAL interacting galaxies have been observed recently in different programmes using the Westerbork Synthesis Radio Telescope at 21 cm wavelength (beamwidth 24 s × 24 s cosec δ). We give here a compilation of the data in order to examine the morphology, strength, and the frequency of occurrence of the radio emission from these interacting systems.
R. J. ALLEN +3 more
openaire +1 more source
Decimeter continuum radio emission from a post-flare loop
Solar Physics, 1986Radio observations offer an important means for providing estimates of magnetic fields in post-flare loops.
exaly +2 more sources
Splotless flares and the associted radio continuum emission
Solar physics, 1987.
Ruždjak, Vladimir, Vršnak, Bojan
openaire