Search Publications
Quasi-stationary solar wind in ray structures of the streamer belt
Eselevich, M. V.; Eselevich, V. G.
It is shown on the basis of analyzing the LASCO/SOHO data that the main quasi-stationary solar wind (SW), with a typical lifetime of up to 10 days, flows in the rays of the streamer belt. Depending on R, its velocity increases gradually from V≈3 km s−1 at R≈1.3 R⊙ to V≈170 km s−1 at R≈15 R⊙. We have dete…
Response of the radial stratification at the base of the convection zone to the activity cycle
Eff-Darwich, Antonio; Korzennik, Sylvain G.
We have analyzed the differences in the oscillation eigenfrequencies measured over more than two years of GONG observations (December 1995-April 1998) and SOI/MDI observations (May 1996-July 1998). We have inverted these data to look for signatures of the solar activity cycle on the stratification. A one-dimensional (radial) structure inversion co…
Quiet-time periods observed by EPHIN/SOHO during the minimum of the 22nd solar cycle
Sierks, Holger; Gómez-Herrero, Raúl; Müller-Mellin, Reinhold +4 more
An analysis of the hydrogen and helium isotopic composition from EPHIN data, during the quiet-time period from January 1 to June 1, 1996, is presented. An isotopic discrimination and background rejection have been applied and relationships between the abundances of 2H/1H, 3He/4He, and 4He/
The Magnetic Connectivity of Moss Regions
Kosovichev, A. G.; Hoeksema, J. T.; Scherrer, P. H. +2 more
A novel emission feature resembling moss was first identified in high-resolution TRACE Fe ix/x 171 Å images by Berger et al. (1999). The moss emission is characterized by dynamic arc-second scale, bright elements surrounding dark inclusions in images of solar active regions. Patches of moss elements, called moss regions, have a scale of 20-30 Mm. …
The Energy Supply to X-ray Bright Points
Culhane, J. L.; Harra, L. K.; Matthews, S. A. +1 more
X-ray bright points (XBPs) are usually assumed to be isolated structures in the solar atmosphere that are powered exclusively by magnetic reconnection. We analyse a large XBP that does not satisfy this assumption. The XBP is observed to be connected to an active region approximately 280 000 km away by a magnetic loop. We find that the soft X-ray i…