Polarization characteristics of the radio emission of the moon taking into account the averaging effect of a knife-edge directional pattern

1969 ◽  
Vol 12 (1) ◽  
pp. 1-4
Author(s):  
V. A. Alekseev ◽  
V. D. Krotikov
Keyword(s):  
Radio Emission ◽  
Directional Pattern ◽  
Knife Edge ◽  
The Moon ◽  
Polarization Characteristics

scholarly journals 79. Radio emission from the moon and the nature of its surface

1957 ◽  
Vol 4 ◽  
pp. 406-407 ◽  
Author(s):  
V. S. Troitzky ◽  
S. E. Khaikin
Keyword(s):  
Radio Emission ◽  
Attenuation Coefficient ◽  
Wave Length ◽  
Degree Of Polarization ◽  
Lunar Phase ◽  
Radio Waves ◽  
The Moon ◽  
Subsolar Point ◽  
Image Position ◽  
Academy Of Sciences

A theoretical study of the integral radio emission of the moon, measured at the wave-length of 3·2 cm. (Zelinskaja and Troitzky[1]; Kajdanovsky, Turusbekov and Khaikin[2]), was carried out at the Gorky radio astronomical station ‘Zimenky’ and at the Physical Institute of the Academy of Sciences of the U.S.S.R. The following expression for the average radio temperature of the entire lunar disk, as a function of the lunar phase, Ωt, was obtained (Troitzky, 1954) [3]: Here tan ξ = δ/(1 + δ) and δ = β/κ, where β is the attenuation coefficient of the thermal wave, κ the power attenuation coefficient of the radio wave. Further, Tm = 374°K. is the temperature of the subsolar point, Tn is the temperature at the lunar midnight, Θ = Tm – Tn and k0 is the reflexion coefficient of radio waves for vertical incidence (k0 ≈ 0–1). The numerical coefficients in equation (1) were obtained as a result of averaging the Fresnel reflexion coefficients over the whole disk. The degree of polarization of the total radio emission was calculated and was found to be about 4 %.

Radio emission and nature of the Moon

1963 ◽  
Vol 81 (12) ◽  
pp. 589-639 ◽  
Author(s):  
V.D. Krotikov ◽  
V.S. Troitskii
Keyword(s):  
Radio Emission ◽  
The Moon

scholarly journals Single Pulses and the Plasma-physical Processes of Pulsar Radio Emission

2017 ◽  
Vol 13 (S337) ◽  
pp. 73-78
Author(s):  
Joanna M. Rankin
Keyword(s):  
Radio Emission ◽  
Pulse Sequences ◽  
Single Pulse ◽  
Physical Processes ◽  
Pulsar Emission ◽  
Pulsar Radio ◽  
Cone Model ◽  
Chart Recorder ◽  
Polarization Characteristics ◽  
Pulsar Radio Emission

AbstractPulsars were discovered on the basis of their individual pulses, first by Jocelyn Bell and then by many others. This was chart-recorder science as computers were not yet in routine use. Single pulses carry direct information about the emission process as revealed in the detailed properties of their polarization characteristics. Early analyses of single pulses proved so dizzyingly complex that attention shifted to study of average profiles. This is turn led to models of pulsar emission beams—in particular the core/double-cone model—which now provides a foundation for understanding single-pulse sequences. We mention some of the 21stC single-pulse surveys and conclude with a brief discussion of our own recent analyses leading to the identification of the pulsar radio-emission mechanism of both slow and millsecond pulsars.

The Phase Dependence of Radio Emission of the Moon on 3·2 cm

1962 ◽  
Vol 14 ◽  
pp. 501-510
Author(s):  
K. M. Strezhneva ◽  
V. S. Troitsky
Keyword(s):  
Radio Emission ◽  
Penetration Depth ◽  
Effective Temperature ◽  
Thermal Wave ◽  
The Moon ◽  
Phase Dependence ◽  
Electric Wave ◽  
The Absolute ◽  
Absolute Measurements

The absolute measurements of the intensity of radio emission of the Moon, carried out with the aid of more advanced equipment and method of calibration, made it possible to reveal its variation with the phase, and yielded the value of the effective temperature for the centre of the disk practically equal toT1= 245° + 15·5° cos(Ωt−50°), the ratio of penetration depth of the electric wave to the thermal wave equal to 6·0, and δ/λ = 2·0.

Colour and Spectral Characteristics of the Lunar Surface

1962 ◽  
Vol 14 ◽  
pp. 399-407
Author(s):  
V. G. Teyfel
Keyword(s):  
Lunar Surface ◽  
Spectral Characteristics ◽  
Complete Information ◽  
Optical Characteristics ◽  
The Moon ◽  
External Layer ◽  
Differences Of Opinion ◽  
Polarization Characteristics ◽  
Basic Rocks ◽  
Broad Complex

In the broad complex of optical studies of the Moon, the most complete information which does not lead to differences of opinion is available only for the photometric characteristics of its surface. The colour and polarization characteristics of the Moon's surface have been studied in less detail; and as far as the question of the colour contrasts on the Moon's surface is concerned, no unanimity of opinion has existed until recently, since colorimetric observations conducted by various investigators have often produced contradictory results. At the same time, the question of the existence and magnitude of colour differences on the surface of the Moon is not an academic one. The colour of the lunar surface reveals just such characteristics of its physical state as do other optical characteristics—such as photometric and polarizing peculiarities which inform us about the microstructure of the surface layer of the Moon. The observed colour of the lunar formations characterizes also the external layer, which represents the result of protracted and continuous influences on the lunar surface of various external factors—such as meteorites, micrometeorites, cosmic rays, and ultraviolet, corpuscular and X-ray radiation of the Sun, etc. Differences in colour of lunar features, just as differences in the albedo, depend on the characteristics of the basic lunar rocks and not on the changes which these rocks have undergone in the course of time. Therefore, although the alteration of characteristics of the external layer of these rocks does not permit comparison of the external optical characteristics of the Moon's topography with terrestrial rocks with certainty, one can, by means of various photometric and colour data, draw a number of conclusions about the characteristics of emerging basic rocks found on its surface.

scholarly journals Radio emission from mini-magnetospheres on the Moon

2004 ◽  
Vol 31 (11) ◽  
pp. n/a-n/a ◽  
Author(s):  
Zdenka Kuncic ◽  
Iver H. Cairns
Keyword(s):  
Radio Emission ◽  
The Moon

The Radio Emission of the Moon on 4 mm

1962 ◽  
Vol 14 ◽  
pp. 511-518 ◽  
Author(s):  
A. G. Kislyakov
Keyword(s):  
Experimental Data ◽  
Radio Emission ◽  
Experimental Research ◽  
Homogeneous Model ◽  
The Moon ◽  
Radio Brightness ◽  
Phase Dependence ◽  
Absolute Value ◽  
The Absolute ◽  
Good Agreement

The aim of this communication is to present the results of an experimental research on the intensity of the radio emission of the Moon at 4 mm and to describe the method followed in observations and reductions. It was established that the radio brightness of the Moon,Tl, varies during the lunation according to the law:Tl= 230° + 73° cos (Ω0t-24°)K. The accuracy in measuring the absolute value of Moon's radio temperature is about ± 10%. The comparison between the phase dependence of the radio emission of the Moon at 4 mm and the data from observations of the radio temperature of the lunar disk on other wave lengths demonstrated that the homogeneous model of Moon's surface is in good agreement with the experimental data.

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