Universität zu Köln

Efimov, A. I., Lukanina, L. A., Chashei, I. V., Kolomiets, S. F., Bird, M. K. and Paetzold, M. (2018). Quasiperiodic Oscillations of the Sub-mHz Band in Near-Sun Plasma according to the Coherent Radio Occultation Data. Cosmic Res., 56 (1). S. 1 - 11. NEW YORK: MAIK NAUKA/INTERPERIODICA/SPRINGER. ISSN 1608-3075

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Abstract

In 2013 and 2015, investigations of the internal solar wind were carried out using the method of two-frequency radio sounding by signals from the Mars Express European spacecraft. The values of the S-and X-bands' frequency and the differential frequency were registered with a sampling rate of 1s at the American and European networks of ground-based tracking stations. The spatial distribution of the frequency fluctuation's level has been studied. It has been shown that the intensity of frequency fluctuation considerably decreases at high heliolatitudes. In some radio sounding sessions, quasiperiodic oscillations of sub-mHz band have been observed in the temporal spectra of frequency fluctuations; they are supposed to be associated with the density inhomogeneities, the sizes of which are close to the turbulence outer scale.

Item Type:	Journal Article
Creators:	Creators Email ORCID ORCID Put Code Efimov, A. I. UNSPECIFIED UNSPECIFIED UNSPECIFIED Lukanina, L. A. UNSPECIFIED UNSPECIFIED UNSPECIFIED Chashei, I. V. UNSPECIFIED UNSPECIFIED UNSPECIFIED Kolomiets, S. F. UNSPECIFIED UNSPECIFIED UNSPECIFIED Bird, M. K. UNSPECIFIED UNSPECIFIED UNSPECIFIED Paetzold, M. UNSPECIFIED UNSPECIFIED UNSPECIFIED
URN:	urn:nbn:de:hbz:38-204312
DOI:	10.1134/S0010952518010057
Journal or Publication Title:	Cosmic Res.
Volume:	56
Number:	1
Page Range:	S. 1 - 11
Date:	2018
Publisher:	MAIK NAUKA/INTERPERIODICA/SPRINGER
Place of Publication:	NEW YORK
ISSN:	1608-3075
Language:	English
Faculty:	Unspecified
Divisions:	Unspecified
Subjects:	no entry
Uncontrolled Keywords:	Keywords Language MARS-EXPRESS; FREQUENCY FLUCTUATIONS; SOUNDING EXPERIMENTS; CIRCUMSOLAR PLASMA; SPACECRAFT; SIGNALS; ROSETTA Multiple languages Engineering, Aerospace; Astronomy & Astrophysics Multiple languages
Refereed:	Yes
URI:	http://kups.ub.uni-koeln.de/id/eprint/20431