Astronomy and Astrophysics – Astronomy
Scientific paper
Mar 1975
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1975ijrsp...4...24m&link_type=abstract
Indian Journal of Radio and Space Physics, vol. 4, Mar. 1975, p. 24-28.
Astronomy and Astrophysics
Astronomy
H Alpha Line, Microwave Emission, Solar Radio Emission, Solar X-Rays, Sudden Ionospheric Disturbances, Data Correlation, Explorer 37 Satellite, Satellite Observation, Solar Flares, Spaceborne Astronomy
Scientific paper
The paper analyzes different types of X-ray bursts recorded by Explorer 37 in the bands 0.5-3, 1-8, and 8-20 A in relation to their morphological types and peak time attainment, along with their correlations with the microwave bursts of different morphological types, intensity-based classes of H-alpha flares, and different types of sudden ionospheric disturbances (SIDs). X-ray bursts are found to be mainly of three morphological types: impulsive, gradual rise and fall, and gradual rise and quick fall. Impulsive X-ray bursts are mostly associated with bright H-alpha flares as well as with different microwave bursts and SIDs. The peak of X-ray bursts at a shorter wavelength is attained earlier than that at a longer wavelength. A major conclusion is that the simultaneous presence of X-ray and centimeter bursts can only ascertain the subsequent occurrences of SIDs. The percentage correlation of X-ray bursts with SIDs in the presence of microwave bursts is about twice as great as that in the absence of microwave bursts
Das Gupta M. K.
Mitra R. K.
Sarkar Sanat K.
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