Ionospheric effects of transient celestial X-ray and gamma ray events

Kasturirangan, K. ; Rastogi, R. G. ; Chakravarty, S. C. ; Rao, U. R. ; Sharma, D. P. (1975) Ionospheric effects of transient celestial X-ray and gamma ray events Indian Journal of Radio and Space Physics, 4 . pp. 203-205. ISSN 0367-8393

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The ionospheric effects arising from the transient celestial events at X-ray and gamma-ray energies typical of flare stars and cosmic gamma-ray bursts are investigated. The VLF data recorded at Ahmedabad, corresponding to the 164 kHz transmission from Tashkent, are studied to see whether any observable effects are time-coincident with the meridional transit of the flare stars Cen X-4 and Cet X-2 at the time of the intensity maximum of their flare states. The VLF data are also examined with respect to the cosmic gamma-ray bursts detected by Vela, IMP-6 and OSO-7 satellites. Theoretical computations are carried out for the estimation of electron density enhancements, using available data on intensities and energy spectra for these events. The observational results are interpreted in terms of these theoretical calculations.

Item Type:Article
Source:Copyright of this article belongs to National Institute of Science Communication and Information Resources.
Keywords:Gamma Rays; Ionospheric Disturbances; Variable Stars; X Ray Stars; Energy Spectra; Ionospheric Electron Density; Novae; Particle Production; Very Low Frequencies
ID Code:73074
Deposited On:30 Nov 2011 04:05
Last Modified:05 Jul 2012 08:32

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