The Tanaka-Enome criterion and solar activity in October?November 2003 as observed by the Large Pulkovo Radio Telescope

2004 ◽  
Vol 42 (6) ◽  
pp. 561-570 ◽  
Author(s):  
T. P. Borisevich ◽  
G. N. Il?in ◽  
A. N. Korzhavin ◽  
N. G. Peterova ◽  
N. A. Topchilo ◽  
...  
Keyword(s):  
Solar Activity ◽  
Radio Telescope ◽  
Large Pulkovo Radio Telescope

scholarly journals 23rd Cycle of Solar Activity in the Light of 34 Years of Cracow Observations of Solar Radio Emission

1993 ◽  
Vol 137 ◽  
pp. 87-89
Author(s):  
Adam Michalec
Keyword(s):  
Solar Activity ◽  
Radio Emission ◽  
Radio Telescope ◽  
Solar Radio ◽  
Solar Radio Emission ◽  
23Rd Cycle

Systematic daily observations of solar radio emission were started at the Fort Skała Observatory on 1st October 1957. The observations were made at the frequency of 810 MHz first with a 5m radio telescope - and since 1964 with a 7m one; at present they comprise already almost 70 thousand hours of observations (Michalec 1991). During that period there were two longer interruptions in the observations: from 23 September 1963 to 2 February 1964 - due to transferring the radio telescope’s antenna from the top of the Fort to a new site, and from 6 November 1973 to 11 March 1974 - connected with the reconstruction of the receiver. Other, fortunately short, interruptions in the course of observations had no influence on the homogeneity of the series.

scholarly journals Solar observations by the large pulkovo radio telescope at 3.2-cm wavelength

1959 ◽  
Vol 9 ◽  
pp. 171-173
Author(s):  
V. Ikhsanova
Keyword(s):  
Radio Telescope ◽  
The Sun ◽  
Solar Observations ◽  
Large Pulkovo Radio Telescope

The observations of the sun by the large Pulkovo radio telescope [1] began in 1956 December. In accordance with the antenna dimensions, a fan-beam diagram about one minute of arc in width and one degree in height was expected (at λ = 3.2 cm).

A 1· 6 MHz Survey of the Galactic Background Radio Emission

1987 ◽  
Vol 40 (5) ◽  
pp. 705 ◽  
Author(s):  
GRA Ellis ◽  
M Mendillo
Keyword(s):  
Solar Activity ◽  
Radio Emission ◽  
Radio Telescope ◽  
Radiation Intensity ◽  
Beam Width ◽  
Solar Activity Minimum ◽  
Galactic Radio Emission ◽  
Galactic Radio ◽  
Galactic Background

Observations of the galactic radio emission at 1 �6 MHz have been made during the current solar activity minimum using a radio telescope with a beam width of 25�. The radiation intensity was mapped for six declinations between _12� and _72� and from 1000 to 0500 hours R.A.

Automated detection of Sun decametre radio bursts by the radio telescope URAN-3

2017 ◽  
Vol 2017 (45) ◽  
pp. 69-76
Author(s):  
V.V. Koshovyy ◽  
◽  
O.L. Ivantyshyn ◽  
A.A. Konovalenko ◽  
R.T. Nogach ◽  
...  
Keyword(s):  
Solar Activity ◽  
Radio Telescope ◽  
Automated Detection ◽  
Radio Bursts ◽  
Type Ii ◽  
Decameter Radio ◽  
Alternative Solutions ◽  
Automated Determination

The problem of the automated determination of the parameters of the sporadic decameter radio emission of the Sun with help of the radio-telescope URAN-3 taking into account its functions in the Ukrainian VLBI URAN structure is analyzed. An overview of alternative solutions of the problem is carried out. The technology of searching and detecting the radio bursts of type II and determination of such parameters as speed of drift in frequency sub bands, intensity, and duration and frequency width of bursts for a number of selected frequencies are considered. The effectiveness of the developed technology is confirmed by the results of long-term radioastronomical observations carried out at the URAN-3 radio telescope in 2011–2017. The formed on the basis of obtained and accumulated experimental data multiparameter relative database of solar activity is intended for further studies of the relation between the helio- and the geophysical phenomena for the purpose of developing forecasting models of geophysical manifestations of solar activity and evaluating the “geoefficiency” of active solar processes.

scholarly journals Solar Activity Dependence of Interplanetary Disturbances

1996 ◽  
Vol 154 ◽  
pp. 221-224
Author(s):  
P.K. Manoharan
Keyword(s):  
Solar Activity ◽  
Solar Cycle ◽  
Coronal Mass Ejection ◽  
Radio Telescope ◽  
Solar Maximum ◽  
Expected Value ◽  
Interplanetary Scintillation ◽  
Activity Dependence ◽  
Mass Ejection ◽  
Low Rate

AbstractInterplanetary scintillation measurements obtained inside 200 R⊙ using the Ooty Radio Telescope during August 1986 - April 1991 have been analysed to study the interplanetary disturbances (or events) and their occurrence rates at various phases of the solar cycle. The disturbances are identified by the increase in the level of scintillation compared with the expected value. In total, 735 events have been identified. The results show a rate of 0.49 events per day near solar maximum and a low rate of 0.16 events per day during minimum of activity. The results are compared with coronal mass ejection (CME) rates and transients rates obtained from the Doppler scintillation measurements.

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