scholarly journals Rocket Measurements of the Galactic Background at 100 μ

1973 ◽  
Vol 52 ◽  
pp. 559-566 ◽  
Author(s):  
Judith L. Pipher
Keyword(s):  
Liquid Helium ◽  
Background Radiation ◽  
Background Intensity ◽  
Number Density ◽  
Diffuse Background ◽  
Average Number Density ◽  
Rocket Measurements ◽  
Galactic Longitude ◽  
Galactic Background

Measurements of the diffuse background radiation in the 85–115 μ band are presented, as observed from altitudes close to 190 km with a rocket-borne, liquid helium cooled telescope. Evidence is given for detection of the galactic background due to thermal grain emission at galactic latitudes of 5–35°, and at a galactic longitude of ~ 163°. At small latitudes, the background intensity is measured to be ~ 9 × 10–11 W cm–2 sr–1; the average number density of grains derived is consistent with the optically determined measure. The 100 μ data is compared with 20 μ data taken on the same flight, in order to draw some conclusions about the grain emissivity and temperature.

Survey of the galactic background radiation at 3.93 and 6.55 MHz

1974 ◽  
Vol 79 ◽  
pp. 777 ◽  
Author(s):  
Joseph K. Alexander ◽  
James C. Novaco
Keyword(s):  
Background Radiation ◽  
Galactic Background

scholarly journals Galactic Background Radiation in the 78 to 111 EV Band

1990 ◽  
Vol 139 ◽  
pp. 241-242
Author(s):  
W. T. Sanders ◽  
J. J. Bloch ◽  
B. C. Edwards ◽  
K. Jahoda ◽  
M. Juda ◽  
...  
Keyword(s):  
Proportional Counter ◽  
Count Rate ◽  
Background Radiation ◽  
Field Of View ◽  
Sounding Rocket ◽  
Full Width ◽  
Half Maximum ◽  
Maximum Field ◽  
Galactic Background

Galactic background radiation has been observed in the 78-111 eV Be band using 5000 Å beryllium filters in front of a thin-window proportional counter collimated to a 15° full width at half maximum field of view. Be band data have been analyzed from two sounding rocket flights (Bloch et al. 1986, Juda 1988) that viewed seventeen different directions distributed over the northern galactic hemisphere. In Figure 1 the pointing directions of the two flights are indicated on a map from McCammon et al. (1983) of the 130-188 eV B band count rate.

An Attempt to Measure the Far Infrared Spectrum of the Cosmic Background Radiation

1974 ◽  
Vol 52 (6) ◽  
pp. 554-561 ◽  
Author(s):  
H. P. Gush
Keyword(s):  
Infrared Spectrum ◽  
Liquid Helium ◽  
Background Radiation ◽  
Far Infrared ◽  
Cosmic Background Radiation ◽  
Black Brant ◽  
The Earth ◽  
Cosmic Background

A liquid helium cooled two-beam far infrared interferometer has been successfully flown in a Black Brant III B rocket. The detector was a germanium bolometer cooled to a temperature of 0.37 K by a liquid He3 refrigerator. The sensitive range was between approximately 5 and 50 cm−1. Satisfactory cosmic spectra were not obtained because of contamination by radiation from the earth.

scholarly journals The Effect of Inhibitory Neuron on the Evolution Model of Higher-Order Coupling Neural Oscillator Population

2014 ◽  
Vol 2014 ◽  
pp. 1-10 ◽  
Author(s):  
Yi Qi ◽  
Rubin Wang ◽  
Xianfa Jiao ◽  
Ying Du
Keyword(s):  
Coupling Strength ◽  
Neural Coding ◽  
Inhibitory Neuron ◽  
Higher Order ◽  
Inhibitory Neurons ◽  
Neural Oscillator ◽  
Number Density ◽  
External Stimulation ◽  
Average Number Density ◽  
Inhibitory Coupling

We proposed a higher-order coupling neural network model including the inhibitory neurons and examined the dynamical evolution of average number density and phase-neural coding under the spontaneous activity and external stimulating condition. The results indicated that increase of inhibitory coupling strength will cause decrease of average number density, whereas increase of excitatory coupling strength will cause increase of stable amplitude of average number density. Whether the neural oscillator population is able to enter the new synchronous oscillation or not is determined by excitatory and inhibitory coupling strength. In the presence of external stimulation, the evolution of the average number density is dependent upon the external stimulation and the coupling term in which the dominator will determine the final evolution.

Spectra and Absorption of Low Frequency Galactic Background Radiation

1976 ◽  
Vol 3 (1) ◽  
pp. 80-81
Author(s):  
H. V. Cane
Keyword(s):  
Background Radiation ◽  
Low Frequency ◽  
The Galaxy ◽  
Galactic Radio ◽  
Galactic Background

Surveys of the Galaxy at five frequencies in the range 2 to 20 MHz have been made using the Llanherne low frequency array (Ellis, 1972). The data has been assembled into maps covering the area 320° < £ < 30° and -25° < b < 22° and these are presented in rectangular galactic co-ordinates. Galactic radio spectra in various directions have been obtained, combining the new data with seven earlier galactic continuum surveys. The details of all the surveys used are given in Table I. A new 4.7 MHz map has been plotted from the profiles presented by Ellis and Hamilton (1966).

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